├── .gitignore ├── .ansible-lint ├── molecule └── default │ ├── collections.yml │ ├── host_vars │ ├── test-assets.yml │ ├── test-controller3.yml │ ├── test-worker2.yml │ ├── test-controller1.yml │ ├── test-controller2.yml │ └── test-worker1.yml │ ├── tasks │ └── taint_controller_nodes.yml │ ├── converge.yml │ ├── verify.yml │ ├── molecule.yml │ ├── prepare.yml │ └── group_vars │ └── all.yml ├── templates ├── etc │ ├── kubernetes │ │ └── controller │ │ │ └── kube-scheduler │ │ │ └── kube-scheduler.yaml.j2 │ └── systemd │ │ └── system │ │ ├── kube-apiserver.service.j2 │ │ ├── kube-scheduler.service.j2 │ │ └── kube-controller-manager.service.j2 └── rbac │ ├── kube-apiserver-to-kubelet_cluster_role_binding.yaml.j2 │ └── kube-apiserver-to-kubelet_cluster_role.yaml.j2 ├── .yamllint ├── meta └── main.yml ├── handlers └── main.yml ├── vars └── main.yml ├── .github └── workflows │ └── release.yml ├── tasks ├── authconfig │ ├── kube-scheduler.yml │ ├── kube-controller-manager.yml │ └── kube-admin-user.yml └── main.yml ├── defaults └── main.yml ├── README.md ├── CHANGELOG.md └── LICENSE /.gitignore: -------------------------------------------------------------------------------- 1 | *.swp 2 | *.retry 3 | .ansible 4 | .vscode 5 | -------------------------------------------------------------------------------- /.ansible-lint: -------------------------------------------------------------------------------- 1 | --- 2 | skip_list: 3 | - role-name 4 | - command-instead-of-shell 5 | -------------------------------------------------------------------------------- /molecule/default/collections.yml: -------------------------------------------------------------------------------- 1 | --- 2 | # Copyright (C) 2023 Robert Wimmer 3 | # SPDX-License-Identifier: GPL-3.0-or-later 4 | 5 | collections: 6 | - ansible.posix 7 | - kubernetes.core 8 | -------------------------------------------------------------------------------- /molecule/default/host_vars/test-assets.yml: -------------------------------------------------------------------------------- 1 | --- 2 | # Copyright (C) 2023 Robert Wimmer 3 | # SPDX-License-Identifier: GPL-3.0-or-later 4 | 5 | wireguard_address: "10.10.10.5/24" 6 | wireguard_port: 51820 7 | wireguard_persistent_keepalive: "30" 8 | wireguard_endpoint: "172.16.10.5" 9 | -------------------------------------------------------------------------------- /molecule/default/host_vars/test-controller3.yml: -------------------------------------------------------------------------------- 1 | --- 2 | # Copyright (C) 2023 Robert Wimmer 3 | # SPDX-License-Identifier: GPL-3.0-or-later 4 | 5 | wireguard_address: "10.10.10.30/24" 6 | wireguard_port: 51820 7 | wireguard_persistent_keepalive: "30" 8 | wireguard_endpoint: "172.16.10.30" 9 | -------------------------------------------------------------------------------- /molecule/default/host_vars/test-worker2.yml: -------------------------------------------------------------------------------- 1 | --- 2 | # Copyright (C) 2023 Robert Wimmer 3 | # SPDX-License-Identifier: GPL-3.0-or-later 4 | 5 | wireguard_address: "10.10.10.110/24" 6 | wireguard_port: 51820 7 | wireguard_persistent_keepalive: "30" 8 | wireguard_endpoint: "172.16.10.110" 9 | -------------------------------------------------------------------------------- /templates/etc/kubernetes/controller/kube-scheduler/kube-scheduler.yaml.j2: -------------------------------------------------------------------------------- 1 | #jinja2: trim_blocks:False 2 | apiVersion: kubescheduler.config.k8s.io/v1 3 | kind: KubeSchedulerConfiguration 4 | clientConnection: 5 | kubeconfig: "{{ k8s_scheduler_conf_dir }}/kubeconfig" 6 | leaderElection: 7 | leaderElect: true 8 | -------------------------------------------------------------------------------- /.yamllint: -------------------------------------------------------------------------------- 1 | --- 2 | extends: default 3 | 4 | rules: 5 | line-length: 6 | max: 300 7 | level: warning 8 | 9 | comments-indentation: disable 10 | comments: 11 | min-spaces-from-content: 1 12 | braces: 13 | min-spaces-inside: 0 14 | max-spaces-inside: 1 15 | octal-values: 16 | forbid-implicit-octal: true 17 | forbid-explicit-octal: true 18 | -------------------------------------------------------------------------------- /molecule/default/host_vars/test-controller1.yml: -------------------------------------------------------------------------------- 1 | --- 2 | # Copyright (C) 2023 Robert Wimmer 3 | # SPDX-License-Identifier: GPL-3.0-or-later 4 | 5 | wireguard_address: "10.10.10.10/24" 6 | wireguard_port: 51820 7 | wireguard_persistent_keepalive: "30" 8 | wireguard_endpoint: "172.16.10.10" 9 | 10 | k8s_ctl_api_endpoint_host: "127.0.0.1" 11 | k8s_ctl_api_endpoint_port: "16443" 12 | -------------------------------------------------------------------------------- /molecule/default/host_vars/test-controller2.yml: -------------------------------------------------------------------------------- 1 | --- 2 | # Copyright (C) 2023 Robert Wimmer 3 | # SPDX-License-Identifier: GPL-3.0-or-later 4 | 5 | wireguard_address: "10.10.10.20/24" 6 | wireguard_port: 51820 7 | wireguard_persistent_keepalive: "30" 8 | wireguard_endpoint: "172.16.10.20" 9 | 10 | k8s_ctl_api_endpoint_host: "127.0.0.1" 11 | k8s_ctl_api_endpoint_port: "16443" 12 | -------------------------------------------------------------------------------- /molecule/default/host_vars/test-worker1.yml: -------------------------------------------------------------------------------- 1 | --- 2 | # Copyright (C) 2023 Robert Wimmer 3 | # SPDX-License-Identifier: GPL-3.0-or-later 4 | 5 | wireguard_address: "10.10.10.100/24" 6 | wireguard_port: 51820 7 | wireguard_persistent_keepalive: "30" 8 | wireguard_endpoint: "172.16.10.100" 9 | 10 | ha_proxy_frontend_bind_address: "127.0.0.1" 11 | ha_proxy_frontend_port: "16443" 12 | 13 | k8s_ctl_api_endpoint_host: "127.0.0.1" 14 | -------------------------------------------------------------------------------- /templates/rbac/kube-apiserver-to-kubelet_cluster_role_binding.yaml.j2: -------------------------------------------------------------------------------- 1 | --- 2 | apiVersion: rbac.authorization.k8s.io/v1 3 | kind: ClusterRoleBinding 4 | metadata: 5 | name: system:kube-apiserver 6 | namespace: "" 7 | roleRef: 8 | apiGroup: rbac.authorization.k8s.io 9 | kind: ClusterRole 10 | name: system:kube-apiserver-to-kubelet 11 | subjects: 12 | - apiGroup: rbac.authorization.k8s.io 13 | kind: User 14 | name: {{ k8s_apiserver_csr_cn }} 15 | -------------------------------------------------------------------------------- /meta/main.yml: -------------------------------------------------------------------------------- 1 | --- 2 | galaxy_info: 3 | author: Robert Wimmer 4 | description: Installs the Kubernetes API server, scheduler and controller manager. 5 | license: GPLv3 6 | min_ansible_version: "2.15" 7 | role_name: kubernetes_controller 8 | namespace: githubixx 9 | platforms: 10 | - name: Ubuntu 11 | versions: 12 | - "jammy" 13 | - "noble" 14 | galaxy_tags: 15 | - kubernetes 16 | - scheduler 17 | - api 18 | - controller 19 | - ha 20 | -------------------------------------------------------------------------------- /handlers/main.yml: -------------------------------------------------------------------------------- 1 | --- 2 | - name: Reload systemd 3 | ansible.builtin.systemd: 4 | daemon_reload: true 5 | 6 | - name: Restart kube-apiserver 7 | ansible.builtin.service: 8 | name: kube-apiserver 9 | state: restarted 10 | 11 | - name: Restart kube-controller-manager 12 | ansible.builtin.service: 13 | name: kube-controller-manager 14 | state: restarted 15 | 16 | - name: Restart kube-scheduler 17 | ansible.builtin.service: 18 | name: kube-scheduler 19 | state: restarted 20 | -------------------------------------------------------------------------------- /templates/rbac/kube-apiserver-to-kubelet_cluster_role.yaml.j2: -------------------------------------------------------------------------------- 1 | --- 2 | apiVersion: rbac.authorization.k8s.io/v1 3 | kind: ClusterRole 4 | metadata: 5 | annotations: 6 | rbac.authorization.kubernetes.io/autoupdate: "true" 7 | labels: 8 | kubernetes.io/bootstrapping: rbac-defaults 9 | name: system:kube-apiserver-to-kubelet 10 | rules: 11 | - apiGroups: 12 | - "" 13 | resources: 14 | - nodes/proxy 15 | - nodes/stats 16 | - nodes/log 17 | - nodes/spec 18 | - nodes/metrics 19 | verbs: 20 | - "*" 21 | -------------------------------------------------------------------------------- /molecule/default/tasks/taint_controller_nodes.yml: -------------------------------------------------------------------------------- 1 | --- 2 | # Copyright (C) 2023 Robert Wimmer 3 | # SPDX-License-Identifier: GPL-3.0-or-later 4 | 5 | - name: Taint Kubernetes control plane nodes 6 | kubernetes.core.k8s_taint: 7 | state: present 8 | name: "{{ k8s_controller_node }}" 9 | taints: 10 | - effect: NoExecute 11 | key: "node-role.kubernetes.io/control-plane" 12 | - effect: NoSchedule 13 | key: "node-role.kubernetes.io/control-plane" 14 | loop: "{{ groups['k8s_controller'] }}" 15 | loop_control: 16 | loop_var: k8s_controller_node 17 | -------------------------------------------------------------------------------- /templates/etc/systemd/system/kube-apiserver.service.j2: -------------------------------------------------------------------------------- 1 | #jinja2: trim_blocks:False 2 | [Unit] 3 | Description=Kubernetes API Server 4 | Documentation=https://github.com/GoogleCloudPlatform/kubernetes 5 | Wants=network-online.target 6 | After=network-online.target 7 | 8 | [Service] 9 | ExecStart={{ k8s_ctl_bin_dir }}/kube-apiserver \ 10 | {%- for setting in k8s_apiserver_settings|sort %} 11 | --{{ setting }}={{ k8s_apiserver_settings[setting] }} {% if not loop.last %}\{% endif %} 12 | {%- endfor %} 13 | {%- for setting in k8s_ctl_service_options %} 14 | {{ setting }} 15 | {%- endfor %} 16 | 17 | [Install] 18 | WantedBy=multi-user.target 19 | -------------------------------------------------------------------------------- /molecule/default/converge.yml: -------------------------------------------------------------------------------- 1 | --- 2 | # Copyright (C) 2023 Robert Wimmer 3 | # SPDX-License-Identifier: GPL-3.0-or-later 4 | 5 | - name: Setup Kubernetes controller 6 | hosts: k8s_controller 7 | become: true 8 | gather_facts: true 9 | tasks: 10 | - name: Include kubernetes_controller role 11 | ansible.builtin.include_role: 12 | name: githubixx.kubernetes_controller 13 | 14 | # - name: Taint Kubernetes control plane nodes 15 | # hosts: k8s_assets 16 | # become: true 17 | # gather_facts: true 18 | # tasks: 19 | # - name: Control plane nodes should only run critical pods 20 | # ansible.builtin.include_tasks: 21 | # file: tasks/taint_controller_nodes.yml 22 | -------------------------------------------------------------------------------- /templates/etc/systemd/system/kube-scheduler.service.j2: -------------------------------------------------------------------------------- 1 | #jinja2: trim_blocks:False 2 | [Unit] 3 | Description=Kubernetes Scheduler 4 | Documentation=https://github.com/GoogleCloudPlatform/kubernetes 5 | Wants=network-online.target 6 | Wants=kube-apiserver.service 7 | After=network-online.target 8 | After=kube-apiserver.service 9 | 10 | [Service] 11 | ExecStartPre=/usr/bin/timeout 30 sh -c 'while ! ss -H -t -l -n sport = :{{ k8s_ctl_api_endpoint_port }} | grep -q "^LISTEN.*:{{ k8s_ctl_api_endpoint_port }}"; do sleep 1; done' 12 | ExecStart={{ k8s_ctl_bin_dir }}/kube-scheduler \ 13 | {%- for setting in k8s_scheduler_settings | sort %} 14 | --{{ setting }}={{ k8s_scheduler_settings[setting] }} {% if not loop.last %}\{% endif %} 15 | {%- endfor %} 16 | {%- for setting in k8s_ctl_service_options %} 17 | {{ setting }} 18 | {%- endfor %} 19 | 20 | [Install] 21 | WantedBy=multi-user.target 22 | -------------------------------------------------------------------------------- /templates/etc/systemd/system/kube-controller-manager.service.j2: -------------------------------------------------------------------------------- 1 | #jinja2: trim_blocks:False 2 | [Unit] 3 | Description=Kubernetes Controller Manager 4 | Documentation=https://github.com/GoogleCloudPlatform/kubernetes 5 | Wants=network-online.target 6 | Wants=kube-apiserver.service 7 | After=network-online.target 8 | After=kube-apiserver.service 9 | 10 | [Service] 11 | ExecStartPre=/usr/bin/timeout 30 sh -c 'while ! ss -H -t -l -n sport = :{{ k8s_ctl_api_endpoint_port }} | grep -q "^LISTEN.*:{{ k8s_ctl_api_endpoint_port }}"; do sleep 1; done' 12 | ExecStart={{ k8s_ctl_bin_dir }}/kube-controller-manager \ 13 | {%- for setting in k8s_controller_manager_settings|sort %} 14 | --{{ setting }}={{ k8s_controller_manager_settings[setting] }} {% if not loop.last %}\{% endif %} 15 | {%- endfor %} 16 | {%- for setting in k8s_ctl_service_options %} 17 | {{ setting }} 18 | {%- endfor %} 19 | 20 | [Install] 21 | WantedBy=multi-user.target 22 | -------------------------------------------------------------------------------- /vars/main.yml: -------------------------------------------------------------------------------- 1 | --- 2 | # Kubernetes control plane binaries to download. 3 | k8s_ctl_binaries: 4 | - kube-apiserver 5 | - kube-controller-manager 6 | - kube-scheduler 7 | - kubectl 8 | 9 | # Kubernetes certificates for: 10 | # kube-(apiserver|controller-manager|controller-manager-sa|scheduler) 11 | k8s_ctl_certificates: 12 | - ca-k8s-apiserver.pem 13 | - ca-k8s-apiserver-key.pem 14 | - cert-k8s-apiserver.pem 15 | - cert-k8s-apiserver-key.pem 16 | - cert-k8s-controller-manager-sa.pem 17 | - cert-k8s-controller-manager-sa-key.pem 18 | - cert-k8s-scheduler.pem 19 | - cert-k8s-scheduler-key.pem 20 | - cert-k8s-controller-manager.pem 21 | - cert-k8s-controller-manager-key.pem 22 | 23 | # The "etcd" certificates needed for the control plane components to be able 24 | # to connect to the "etcd" cluster. 25 | k8s_ctl_etcd_certificates: 26 | - ca-etcd.pem 27 | - ca-etcd-key.pem 28 | - cert-k8s-apiserver-etcd.pem 29 | - cert-k8s-apiserver-etcd-key.pem 30 | -------------------------------------------------------------------------------- /molecule/default/verify.yml: -------------------------------------------------------------------------------- 1 | --- 2 | # Copyright (C) 2023 Robert Wimmer 3 | # SPDX-License-Identifier: GPL-3.0-or-later 4 | 5 | - name: Verify setup 6 | hosts: test-assets 7 | tasks: 8 | - name: Fetch namespaces information 9 | kubernetes.core.k8s_info: 10 | api_version: v1 11 | kind: namespace 12 | kubeconfig: "{{ k8s_admin_conf_dir }}/admin.kubeconfig" 13 | register: k8s__namespaces_info 14 | 15 | - name: Print namespaces 16 | ansible.builtin.debug: 17 | var: "{{ k8s__namespaces_info | community.general.json_query(json_query) }}" 18 | vars: 19 | json_query: "length(resources)" 20 | when: ansible_verbosity > 1 21 | 22 | - name: Register namespaces count 23 | ansible.builtin.set_fact: 24 | k8s__namespaces_count: "{{ k8s__namespaces_info | community.general.json_query(json_query) }}" 25 | vars: 26 | json_query: "length(resources)" 27 | 28 | - name: There should be four namespaces 29 | ansible.builtin.assert: 30 | that: 31 | - k8s__namespaces_count|int == 4 32 | -------------------------------------------------------------------------------- /.github/workflows/release.yml: -------------------------------------------------------------------------------- 1 | --- 2 | # This workflow requires a GALAXY_API_KEY secret present in the GitHub 3 | # repository or organization. 4 | # 5 | # See: https://github.com/marketplace/actions/publish-ansible-role-to-galaxy 6 | # See: https://github.com/ansible/galaxy/issues/46 7 | 8 | name: Release 9 | on: 10 | push: 11 | tags: 12 | - '*' 13 | 14 | defaults: 15 | run: 16 | working-directory: 'githubixx.kubernetes_controller' 17 | 18 | jobs: 19 | release: 20 | name: Release 21 | runs-on: ubuntu-latest 22 | steps: 23 | - name: Check out the codebase. 24 | uses: actions/checkout@v2 25 | with: 26 | path: 'githubixx.kubernetes_controller' 27 | 28 | - name: Set up Python 3. 29 | uses: actions/setup-python@v2 30 | with: 31 | python-version: '3.x' 32 | 33 | - name: Install Ansible. 34 | run: pip3 install ansible-core 35 | 36 | - name: Trigger a new import on Galaxy. 37 | run: >- 38 | ansible-galaxy role import --token ${{ secrets.GALAXY_API_KEY }} -vvvvvvvv --role-name=$(echo ${{ github.repository }} | cut -d/ -f2 | sed 's/ansible-role-//' | sed 's/-/_/') $(echo ${{ github.repository }} | cut -d/ -f1) $(echo ${{ github.repository }} | cut -d/ -f2) 39 | -------------------------------------------------------------------------------- /molecule/default/molecule.yml: -------------------------------------------------------------------------------- 1 | --- 2 | # Copyright (C) 2023 Robert Wimmer 3 | # SPDX-License-Identifier: GPL-3.0-or-later 4 | 5 | dependency: 6 | name: galaxy 7 | 8 | driver: 9 | name: vagrant 10 | provider: 11 | name: libvirt 12 | type: libvirt 13 | 14 | platforms: 15 | - name: test-assets 16 | box: alvistack/ubuntu-24.04 17 | memory: 2048 18 | cpus: 2 19 | groups: 20 | - vpn 21 | - k8s_assets 22 | - k8s 23 | interfaces: 24 | - auto_config: true 25 | network_name: private_network 26 | type: static 27 | ip: 172.16.10.5 28 | - name: test-controller1 29 | box: alvistack/ubuntu-22.04 30 | memory: 2048 31 | cpus: 2 32 | groups: 33 | - vpn 34 | - ubuntu22 35 | - k8s_controller 36 | - k8s_worker 37 | - k8s_etcd 38 | - k8s 39 | interfaces: 40 | - auto_config: true 41 | network_name: private_network 42 | type: static 43 | ip: 172.16.10.10 44 | - name: test-controller2 45 | box: alvistack/ubuntu-22.04 46 | memory: 2048 47 | cpus: 2 48 | groups: 49 | - vpn 50 | - ubuntu22 51 | - k8s_controller 52 | - k8s_worker 53 | - k8s_etcd 54 | - k8s 55 | interfaces: 56 | - auto_config: true 57 | network_name: private_network 58 | type: static 59 | ip: 172.16.10.20 60 | - name: test-controller3 61 | box: alvistack/ubuntu-24.04 62 | memory: 2048 63 | cpus: 2 64 | groups: 65 | - vpn 66 | - ubuntu24 67 | - k8s_controller 68 | - k8s_worker 69 | - k8s_etcd 70 | - k8s 71 | interfaces: 72 | - auto_config: true 73 | network_name: private_network 74 | type: static 75 | ip: 172.16.10.30 76 | - name: test-worker1 77 | box: alvistack/ubuntu-22.04 78 | memory: 2048 79 | cpus: 2 80 | groups: 81 | - vpn 82 | - ubuntu22 83 | - k8s_worker 84 | - k8s 85 | interfaces: 86 | - auto_config: true 87 | network_name: private_network 88 | type: static 89 | ip: 172.16.10.100 90 | - name: test-worker2 91 | box: alvistack/ubuntu-24.04 92 | memory: 2048 93 | cpus: 2 94 | groups: 95 | - vpn 96 | - ubuntu24 97 | - k8s_worker 98 | - k8s 99 | interfaces: 100 | - auto_config: true 101 | network_name: private_network 102 | type: static 103 | ip: 172.16.10.110 104 | 105 | provisioner: 106 | name: ansible 107 | connection_options: 108 | ansible_ssh_user: vagrant 109 | ansible_become: true 110 | log: true 111 | lint: yamllint . && flake8 112 | 113 | scenario: 114 | name: default 115 | test_sequence: 116 | - prepare 117 | - converge 118 | 119 | verifier: 120 | name: ansible 121 | enabled: true 122 | -------------------------------------------------------------------------------- /molecule/default/prepare.yml: -------------------------------------------------------------------------------- 1 | --- 2 | # Copyright (C) 2023 Robert Wimmer 3 | # SPDX-License-Identifier: GPL-3.0-or-later 4 | 5 | - name: Update cache 6 | hosts: k8s 7 | remote_user: vagrant 8 | become: true 9 | gather_facts: true 10 | tasks: 11 | - name: Update APT package cache 12 | ansible.builtin.apt: 13 | update_cache: true 14 | cache_valid_time: 3600 15 | 16 | - name: Harden hosts 17 | hosts: all 18 | remote_user: vagrant 19 | become: true 20 | gather_facts: true 21 | tasks: 22 | - name: Setup harden_linux role 23 | ansible.builtin.include_role: 24 | name: githubixx.harden_linux 25 | 26 | - name: Setup Wireguard VPN 27 | hosts: vpn 28 | remote_user: vagrant 29 | become: true 30 | gather_facts: true 31 | tasks: 32 | - name: Setup wireguard role 33 | ansible.builtin.include_role: 34 | name: githubixx.ansible_role_wireguard 35 | 36 | - name: Setup cfssl 37 | hosts: k8s_assets 38 | become: true 39 | gather_facts: false 40 | tasks: 41 | - name: Install cfssl 42 | ansible.builtin.include_role: 43 | name: githubixx.cfssl 44 | 45 | - name: Setup Kubernetes certificates 46 | hosts: k8s_assets 47 | gather_facts: false 48 | tasks: 49 | - name: Generate etcd and K8s TLS certificates 50 | ansible.builtin.include_role: 51 | name: githubixx.kubernetes_ca 52 | 53 | - name: Copy certificate files from assets to local host 54 | ansible.posix.synchronize: 55 | mode: pull 56 | src: "{{ k8s_ctl_ca_conf_directory }}" 57 | dest: "/tmp" 58 | 59 | - name: Setup etcd 60 | hosts: k8s_etcd 61 | remote_user: vagrant 62 | become: true 63 | gather_facts: true 64 | tasks: 65 | - name: Include etcd role 66 | ansible.builtin.include_role: 67 | name: githubixx.etcd 68 | 69 | - name: Setup Kubernetes client tooling 70 | hosts: k8s_assets 71 | become: true 72 | gather_facts: true 73 | tasks: 74 | - name: Install kubectl 75 | ansible.builtin.include_role: 76 | name: githubixx.kubectl 77 | 78 | - name: Install support packages 79 | ansible.builtin.package: 80 | name: "{{ packages }}" 81 | state: present 82 | vars: 83 | packages: 84 | - conntrack 85 | - python3-pip 86 | 87 | - name: Install kubernetes Python package 88 | ansible.builtin.package: 89 | name: python3-kubernetes 90 | state: present 91 | 92 | - name: Setup HAProxy 93 | hosts: ubuntu22 94 | remote_user: vagrant 95 | become: true 96 | gather_facts: true 97 | tasks: 98 | - name: Setup haproxy role 99 | ansible.builtin.include_role: 100 | name: githubixx.haproxy 101 | 102 | - name: Install CNI plugins and runc 103 | hosts: k8s 104 | remote_user: vagrant 105 | become: true 106 | gather_facts: true 107 | tasks: 108 | - name: Include runc role 109 | ansible.builtin.include_role: 110 | name: githubixx.runc 111 | 112 | - name: Include CNI role 113 | ansible.builtin.include_role: 114 | name: githubixx.cni 115 | -------------------------------------------------------------------------------- /tasks/authconfig/kube-scheduler.yml: -------------------------------------------------------------------------------- 1 | --- 2 | - name: Register checksum of kube-scheduler original kubeconfig 3 | ansible.builtin.stat: 4 | path: "{{ k8s_scheduler_conf_dir }}/kubeconfig" 5 | register: k8s_ctl__scheduler_kubeconfig_orig_stat 6 | 7 | - name: Generate kubeconfig for kube-scheduler (set-cluster) 8 | ansible.builtin.shell: > 9 | set -o errexit; \ 10 | kubectl config set-cluster {{ k8s_config_cluster_name }} \ 11 | --certificate-authority={{ k8s_ctl_pki_dir }}/ca-k8s-apiserver.pem \ 12 | --embed-certs=true \ 13 | --server=https://{{ k8s_ctl_api_endpoint_host }}:{{ k8s_ctl_api_endpoint_port }} \ 14 | --kubeconfig={{ k8s_scheduler_conf_dir }}/kubeconfig 15 | args: 16 | executable: /bin/bash 17 | register: k8s_ctl__set_cluster_out 18 | changed_when: false 19 | failed_when: k8s_ctl__set_cluster_out.rc != 0 20 | 21 | - name: Generate kubeconfig for kube-scheduler (set-cluster) - DEBUG OUTPUT 22 | ansible.builtin.debug: 23 | msg: "COMMAND:{{ k8s_ctl__set_cluster_out.cmd }} | OUTPUT: {{ k8s_ctl__set_cluster_out.stdout }}" 24 | verbosity: 2 25 | 26 | - name: Generate kubeconfig for kube-scheduler (set-credentials) 27 | ansible.builtin.shell: > 28 | set -o errexit; \ 29 | kubectl config set-credentials system:kube-scheduler \ 30 | --client-certificate={{ k8s_ctl_pki_dir }}/cert-k8s-scheduler.pem \ 31 | --client-key={{ k8s_ctl_pki_dir }}/cert-k8s-scheduler-key.pem \ 32 | --embed-certs=true \ 33 | --kubeconfig={{ k8s_scheduler_conf_dir }}/kubeconfig 34 | args: 35 | executable: /bin/bash 36 | register: k8s_ctl__set_credentials_out 37 | changed_when: false 38 | failed_when: k8s_ctl__set_credentials_out.rc != 0 39 | 40 | - name: Generate kubeconfig for kube-scheduler (set-credentials) - DEBUG OUTPUT 41 | ansible.builtin.debug: 42 | msg: "COMMAND:{{ k8s_ctl__set_credentials_out.cmd }} | OUTPUT: {{ k8s_ctl__set_credentials_out.stdout }}" 43 | verbosity: 2 44 | 45 | - name: Generate kubeconfig for kube-scheduler (set-context) 46 | ansible.builtin.shell: > 47 | set -o errexit; \ 48 | kubectl config set-context default \ 49 | --cluster={{ k8s_config_cluster_name }} \ 50 | --user=system:kube-scheduler \ 51 | --kubeconfig={{ k8s_scheduler_conf_dir }}/kubeconfig 52 | args: 53 | executable: /bin/bash 54 | register: k8s_ctl__set_context_out 55 | changed_when: false 56 | failed_when: k8s_ctl__set_context_out.rc != 0 57 | 58 | - name: Generate kubeconfig for kube-scheduler (set-context) - DEBUG OUTPUT 59 | ansible.builtin.debug: 60 | msg: "COMMAND:{{ k8s_ctl__set_context_out.cmd }} | OUTPUT: {{ k8s_ctl__set_context_out.stdout }}" 61 | verbosity: 2 62 | 63 | - name: Generate kubeconfig for kube-scheduler (use-context) 64 | ansible.builtin.shell: > 65 | set -o errexit; \ 66 | kubectl config use-context default \ 67 | --kubeconfig={{ k8s_scheduler_conf_dir }}/kubeconfig 68 | args: 69 | executable: /bin/bash 70 | register: k8s_ctl__use_context_out 71 | changed_when: false 72 | failed_when: k8s_ctl__use_context_out.rc != 0 73 | 74 | - name: Generate kubeconfig for kube-scheduler (use-context) - DEBUG OUTPUT 75 | ansible.builtin.debug: 76 | msg: "COMMAND:{{ k8s_ctl__use_context_out.cmd }} | OUTPUT: {{ k8s_ctl__use_context_out.stdout }}" 77 | verbosity: 2 78 | 79 | - name: Set file permissions 80 | ansible.builtin.file: 81 | path: "{{ k8s_scheduler_conf_dir }}/kubeconfig" 82 | owner: "root" 83 | group: "{{ k8s_run_as_group }}" 84 | mode: "0640" 85 | modification_time: "preserve" 86 | access_time: "preserve" 87 | 88 | - name: Register checksum of kube-scheduler current kubeconfig 89 | ansible.builtin.stat: 90 | path: "{{ k8s_scheduler_conf_dir }}/kubeconfig" 91 | register: k8s_ctl__scheduler_kubeconfig_current_stat 92 | 93 | - name: Check if kubeconfig file changed 94 | when: 95 | - k8s_ctl__scheduler_kubeconfig_orig_stat.stat.checksum is defined 96 | - k8s_ctl__scheduler_kubeconfig_orig_stat.stat.checksum != k8s_ctl__scheduler_kubeconfig_current_stat.stat.checksum 97 | ansible.builtin.debug: 98 | msg: "kubeconfig file changed" 99 | changed_when: 100 | - k8s_ctl__scheduler_kubeconfig_orig_stat.stat.checksum != k8s_ctl__scheduler_kubeconfig_current_stat.stat.checksum 101 | notify: 102 | - Restart kube-scheduler 103 | -------------------------------------------------------------------------------- /tasks/authconfig/kube-controller-manager.yml: -------------------------------------------------------------------------------- 1 | --- 2 | - name: Register checksum of kube-controller-manager original kubeconfig 3 | ansible.builtin.stat: 4 | path: "{{ k8s_controller_manager_conf_dir }}/kubeconfig" 5 | register: k8s_ctl__controller_manager_kubeconfig_orig_stat 6 | 7 | - name: Generate kubeconfig for kube-controller-manager (set-cluster) 8 | ansible.builtin.shell: > 9 | set -o errexit; \ 10 | kubectl config set-cluster {{ k8s_config_cluster_name }} \ 11 | --certificate-authority={{ k8s_ctl_pki_dir }}/ca-k8s-apiserver.pem \ 12 | --embed-certs=true \ 13 | --server=https://{{ k8s_ctl_api_endpoint_host }}:{{ k8s_ctl_api_endpoint_port }} \ 14 | --kubeconfig={{ k8s_controller_manager_conf_dir }}/kubeconfig 15 | args: 16 | executable: /bin/bash 17 | register: k8s_ctl__set_cluster_out 18 | changed_when: false 19 | failed_when: k8s_ctl__set_cluster_out.rc != 0 20 | 21 | - name: Generate kubeconfig for kube-controller-manager (set-cluster) - DEBUG OUTPUT 22 | ansible.builtin.debug: 23 | msg: "COMMAND:{{ k8s_ctl__set_cluster_out.cmd }} | OUTPUT: {{ k8s_ctl__set_cluster_out.stdout }}" 24 | verbosity: 2 25 | 26 | - name: Generate kubeconfig for kube-controller-manager (set-credentials) 27 | ansible.builtin.shell: > 28 | set -o errexit; \ 29 | kubectl config set-credentials system:kube-controller-manager \ 30 | --client-certificate={{ k8s_ctl_pki_dir }}/cert-k8s-controller-manager.pem \ 31 | --client-key={{ k8s_ctl_pki_dir }}/cert-k8s-controller-manager-key.pem \ 32 | --embed-certs=true \ 33 | --kubeconfig={{ k8s_controller_manager_conf_dir }}/kubeconfig 34 | args: 35 | executable: /bin/bash 36 | register: k8s_ctl__set_credentials_out 37 | changed_when: false 38 | failed_when: k8s_ctl__set_credentials_out.rc != 0 39 | 40 | - name: Generate kubeconfig for kube-controller-manager (set-credentials) - DEBUG OUTPUT 41 | ansible.builtin.debug: 42 | msg: "COMMAND:{{ k8s_ctl__set_credentials_out.cmd }} | OUTPUT: {{ k8s_ctl__set_credentials_out.stdout }}" 43 | verbosity: 2 44 | 45 | - name: Generate kubeconfig for kube-controller-manager (set-context) 46 | ansible.builtin.shell: > 47 | set -o errexit; \ 48 | kubectl config set-context default \ 49 | --cluster={{ k8s_config_cluster_name }} \ 50 | --user=system:kube-controller-manager \ 51 | --kubeconfig={{ k8s_controller_manager_conf_dir }}/kubeconfig 52 | args: 53 | executable: /bin/bash 54 | register: k8s_ctl__set_context_out 55 | changed_when: false 56 | failed_when: k8s_ctl__set_context_out.rc != 0 57 | 58 | - name: Generate kubeconfig for kube-controller-manager (set-context) - DEBUG OUTPUT 59 | ansible.builtin.debug: 60 | msg: "COMMAND:{{ k8s_ctl__set_context_out.cmd }} | OUTPUT: {{ k8s_ctl__set_context_out.stdout }}" 61 | verbosity: 2 62 | 63 | - name: Generate kubeconfig for kube-controller-manager (use-context) 64 | ansible.builtin.shell: > 65 | set -o errexit; \ 66 | kubectl config use-context default \ 67 | --kubeconfig={{ k8s_controller_manager_conf_dir }}/kubeconfig 68 | args: 69 | executable: /bin/bash 70 | register: k8s_ctl__use_context_out 71 | changed_when: false 72 | failed_when: k8s_ctl__use_context_out.rc != 0 73 | 74 | - name: Generate kubeconfig for kube-controller-manager (use-context) - DEBUG OUTPUT 75 | ansible.builtin.debug: 76 | msg: "COMMAND:{{ k8s_ctl__use_context_out.cmd }} | OUTPUT: {{ k8s_ctl__use_context_out.stdout }}" 77 | verbosity: 2 78 | 79 | - name: Set file permissions 80 | ansible.builtin.file: 81 | path: "{{ k8s_controller_manager_conf_dir }}/kubeconfig" 82 | owner: "root" 83 | group: "{{ k8s_run_as_group }}" 84 | mode: "0640" 85 | modification_time: "preserve" 86 | access_time: "preserve" 87 | 88 | - name: Register checksum of kube-controller-manager current kubeconfig 89 | ansible.builtin.stat: 90 | path: "{{ k8s_controller_manager_conf_dir }}/kubeconfig" 91 | register: k8s_ctl__controller_manager_kubeconfig_current_stat 92 | 93 | - name: Check if kubeconfig file changed 94 | when: 95 | - k8s_ctl__controller_manager_kubeconfig_orig_stat.stat.checksum is defined 96 | - k8s_ctl__controller_manager_kubeconfig_orig_stat.stat.checksum != k8s_ctl__controller_manager_kubeconfig_current_stat.stat.checksum 97 | ansible.builtin.debug: 98 | msg: "kubeconfig file changed" 99 | changed_when: 100 | - k8s_ctl__controller_manager_kubeconfig_orig_stat.stat.checksum != k8s_ctl__controller_manager_kubeconfig_current_stat.stat.checksum 101 | notify: 102 | - Restart kube-controller-manager 103 | -------------------------------------------------------------------------------- /tasks/authconfig/kube-admin-user.yml: -------------------------------------------------------------------------------- 1 | --- 2 | - name: Create directory to store admin.kubeconfig file 3 | ansible.builtin.file: 4 | path: "{{ k8s_admin_conf_dir }}" 5 | state: directory 6 | mode: "{{ k8s_admin_conf_dir_perm }}" 7 | owner: "{{ k8s_admin_conf_owner }}" 8 | group: "{{ k8s_admin_conf_group }}" 9 | 10 | - name: Register checksum original admin.kubeconfig 11 | ansible.builtin.stat: 12 | path: "{{ k8s_admin_conf_dir }}/admin.kubeconfig" 13 | register: k8s_ctl__admin_kubeconfig_orig_stat 14 | run_once: true 15 | delegate_to: "{{ k8s_ctl_delegate_to }}" 16 | 17 | - name: Generate a kubeconfig file for the admin user (set-cluster) 18 | ansible.builtin.shell: > 19 | set -o errexit; \ 20 | kubectl config set-cluster {{ k8s_config_cluster_name }} \ 21 | --certificate-authority={{ k8s_ctl_ca_conf_directory }}/ca-k8s-apiserver.pem \ 22 | --embed-certs=true \ 23 | --server=https://{{ k8s_admin_api_endpoint_host }}:{{ k8s_admin_api_endpoint_port }} \ 24 | --kubeconfig={{ k8s_admin_conf_dir }}/admin.kubeconfig 25 | args: 26 | executable: /bin/bash 27 | register: k8s_ctl__set_cluster_out 28 | changed_when: false 29 | failed_when: k8s_ctl__set_cluster_out.rc != 0 30 | run_once: true 31 | delegate_to: "{{ k8s_ctl_delegate_to }}" 32 | 33 | - name: Generate kubeconfig for the admin user (set-cluster) - DEBUG OUTPUT 34 | ansible.builtin.debug: 35 | msg: "COMMAND:{{ k8s_ctl__set_cluster_out.cmd }} | OUTPUT: {{ k8s_ctl__set_cluster_out.stdout }}" 36 | verbosity: 2 37 | run_once: true 38 | delegate_to: "{{ k8s_ctl_delegate_to }}" 39 | 40 | - name: Generate a kubeconfig file for the admin user (set-credentials) 41 | ansible.builtin.shell: > 42 | set -o errexit; \ 43 | kubectl config set-credentials admin \ 44 | --client-certificate={{ k8s_ctl_ca_conf_directory }}/cert-admin.pem \ 45 | --client-key={{ k8s_ctl_ca_conf_directory }}/cert-admin-key.pem \ 46 | --embed-certs=true \ 47 | --kubeconfig={{ k8s_admin_conf_dir }}/admin.kubeconfig 48 | args: 49 | executable: /bin/bash 50 | register: k8s_ctl__set_credentials_out 51 | changed_when: false 52 | failed_when: k8s_ctl__set_credentials_out.rc != 0 53 | run_once: true 54 | delegate_to: "{{ k8s_ctl_delegate_to }}" 55 | 56 | - name: Generate kubeconfig for the admin user (set-credentials) - DEBUG OUTPUT 57 | ansible.builtin.debug: 58 | msg: "COMMAND:{{ k8s_ctl__set_credentials_out.cmd }} | OUTPUT: {{ k8s_ctl__set_credentials_out.stdout }}" 59 | verbosity: 2 60 | run_once: true 61 | delegate_to: "{{ k8s_ctl_delegate_to }}" 62 | 63 | - name: Generate a kubeconfig file for the admin user (set-context) 64 | ansible.builtin.shell: > 65 | set -o errexit; \ 66 | kubectl config set-context default \ 67 | --cluster={{ k8s_config_cluster_name }} \ 68 | --user=admin \ 69 | --kubeconfig={{ k8s_admin_conf_dir }}/admin.kubeconfig 70 | args: 71 | executable: /bin/bash 72 | register: k8s_ctl__set_context_out 73 | changed_when: false 74 | failed_when: k8s_ctl__set_context_out.rc != 0 75 | run_once: true 76 | delegate_to: "{{ k8s_ctl_delegate_to }}" 77 | 78 | - name: Generate kubeconfig for the admin user (set-context) - DEBUG OUTPUT 79 | ansible.builtin.debug: 80 | msg: "COMMAND:{{ k8s_ctl__set_context_out.cmd }} | OUTPUT: {{ k8s_ctl__set_context_out.stdout }}" 81 | verbosity: 2 82 | run_once: true 83 | delegate_to: "{{ k8s_ctl_delegate_to }}" 84 | 85 | - name: Set use-context 86 | ansible.builtin.shell: > 87 | kubectl config use-context default \ 88 | --kubeconfig={{ k8s_admin_conf_dir }}/admin.kubeconfig 89 | args: 90 | executable: /bin/bash 91 | register: k8s_ctl__use_context_out 92 | changed_when: false 93 | failed_when: k8s_ctl__use_context_out.rc != 0 94 | run_once: true 95 | delegate_to: "{{ k8s_ctl_delegate_to }}" 96 | 97 | - name: Generate kubeconfig for the admin user (use-context) - DEBUG OUTPUT 98 | ansible.builtin.debug: 99 | msg: "COMMAND:{{ k8s_ctl__use_context_out.cmd }} | OUTPUT: {{ k8s_ctl__use_context_out.stdout }}" 100 | verbosity: 2 101 | 102 | - name: Set file permissions 103 | ansible.builtin.file: 104 | path: "{{ k8s_admin_conf_dir }}/admin.kubeconfig" 105 | owner: "{{ k8s_admin_conf_owner }}" 106 | group: "{{ k8s_admin_conf_group }}" 107 | mode: "0640" 108 | modification_time: "preserve" 109 | access_time: "preserve" 110 | run_once: true 111 | delegate_to: "{{ k8s_ctl_delegate_to }}" 112 | 113 | - name: Register checksum of current admin.kubeconfig 114 | ansible.builtin.stat: 115 | path: "{{ k8s_admin_conf_dir }}/admin.kubeconfig" 116 | register: k8s_ctl__admin_kubeconfig_current_stat 117 | run_once: true 118 | delegate_to: "{{ k8s_ctl_delegate_to }}" 119 | 120 | - name: Check if admin.kubeconfig file changed 121 | when: 122 | - k8s_ctl__admin_kubeconfig_orig_stat.stat.checksum is defined 123 | - k8s_ctl__admin_kubeconfig_orig_stat.stat.checksum != k8s_ctl__admin_kubeconfig_current_stat.stat.checksum 124 | ansible.builtin.debug: 125 | msg: "admin.kubeconfig file changed" 126 | changed_when: 127 | - k8s_ctl__admin_kubeconfig_orig_stat.stat.checksum != k8s_ctl__admin_kubeconfig_current_stat.stat.checksum 128 | run_once: true 129 | delegate_to: "{{ k8s_ctl_delegate_to }}" 130 | -------------------------------------------------------------------------------- /molecule/default/group_vars/all.yml: -------------------------------------------------------------------------------- 1 | --- 2 | # Copyright (C) 2023 Robert Wimmer 3 | # SPDX-License-Identifier: GPL-3.0-or-later 4 | 5 | # Use "systemd-timesyncd" for time services. It's available by default. 6 | harden_linux_ntp: "systemd-timesyncd" 7 | 8 | # Password for user "root" and "vagrant" is "vagrant" in both cases. As 9 | # "vagrant" user is available in every Vagrant Ubuntu Box just use it. 10 | harden_linux_root_password: "$6$rounds=656000$mysecretsalt$fpyQ9hMON6iKKuM0Rz10WZKNJR4OkQTVfBmd4SPrJPsU9XmgQGRtogcUnFB5FLRIitswuQFr6Tr8Mos9l7Ojm0" 11 | harden_linux_deploy_user: "vagrant" 12 | harden_linux_deploy_user_password: "$6$rounds=656000$mysecretsalt$fpyQ9hMON6iKKuM0Rz10WZKNJR4OkQTVfBmd4SPrJPsU9XmgQGRtogcUnFB5FLRIitswuQFr6Tr8Mos9l7Ojm0" 13 | harden_linux_deploy_user_home: "/home/vagrant" 14 | harden_linux_deploy_user_uid: "1000" 15 | harden_linux_deploy_user_shell: "/bin/bash" 16 | 17 | # Enable IP forwarding for IPv4 and IPv6 18 | harden_linux_sysctl_settings_user: 19 | "net.ipv4.ip_forward": 1 20 | "net.ipv6.conf.default.forwarding": 1 21 | "net.ipv6.conf.all.forwarding": 1 22 | 23 | # Let SSHd listen on port 22, allow password authentication and allow "root" 24 | # login. The last two settings are not recommended for production use but for 25 | # this test deployment it's okay as it makes debugging easier and faster. 26 | harden_linux_sshd_settings_user: 27 | "^Port ": "Port 22" 28 | "^PasswordAuthentication": "PasswordAuthentication yes" 29 | "^PermitRootLogin": "PermitRootLogin yes" 30 | 31 | # Open a few ports for ssh, Wireguard, HTTP, HTTPS and SMTP. 32 | harden_linux_ufw_rules: 33 | - rule: "allow" 34 | to_port: "22" 35 | protocol: "tcp" 36 | - rule: "allow" 37 | to_port: "51820" 38 | protocol: "udp" 39 | - rule: "allow" 40 | to_port: "80" 41 | protocol: "tcp" 42 | - rule: "allow" 43 | to_port: "443" 44 | protocol: "tcp" 45 | - rule: "allow" 46 | to_port: "25" 47 | protocol: "tcp" 48 | 49 | # Allow all traffic from the following networks. 50 | harden_linux_ufw_allow_networks: 51 | - "10.0.0.0/8" 52 | - "172.16.0.0/12" 53 | - "192.168.0.0/16" 54 | 55 | # Enable logging for UFW. 56 | harden_linux_ufw_logging: 'on' 57 | 58 | # Set the default forward policy to "ACCEPT". 59 | harden_linux_ufw_defaults_user: 60 | "^DEFAULT_FORWARD_POLICY": 'DEFAULT_FORWARD_POLICY="ACCEPT"' 61 | 62 | # Don't block SSH logins from the following networks even login attempts fail 63 | # for a few times. 64 | harden_linux_sshguard_whitelist: 65 | - "127.0.0.0/8" 66 | - "::1/128" 67 | - "10.0.0.0/8" 68 | - "172.16.0.0/12" 69 | - "192.168.0.0/16" 70 | 71 | # Directory where the etcd certificates are stored on the Ansible controller 72 | # host. Certificate files for etcd will be copied from this directory to 73 | # the etcd nodes. 74 | etcd_ca_conf_directory: "{{ k8s_ca_conf_directory }}" 75 | # Directory where the etcd certificates are stored on the etcd hosts. 76 | etcd_conf_dir: "/etc/etcd" 77 | # Interface where the etcd service is listening on. 78 | etcd_interface: "{{ k8s_interface }}" 79 | # A few additional settings for etcd. 80 | etcd_settings_user: 81 | "heartbeat-interval": "250" 82 | "election-timeout": "2500" 83 | # Host names and IP addresses in the etcd certificates. 84 | etcd_cert_hosts: 85 | - localhost 86 | - 127.0.0.1 87 | - 172.16.10.10 88 | - 172.16.10.20 89 | - 172.16.10.30 90 | - 10.10.10.10 91 | - 10.10.10.20 92 | - 10.10.10.30 93 | - test-controller1 94 | - test-controller2 95 | - test-controller3 96 | 97 | # Directory where the Kubernetes certificates are stored on the Ansible 98 | # controller host. 99 | k8s_ca_conf_directory: "/tmp/k8s-ca" 100 | # Permissions for the Kubernetes CA directory. 101 | k8s_ca_conf_directory_perm: "0700" 102 | # Permissions for the Kubernetes CA files. 103 | k8s_ca_file_perm: "0600" 104 | # Owner of the Kubernetes CA files. 105 | k8s_ca_certificate_owner: "vagrant" 106 | # Group of the Kubernetes CA files. 107 | k8s_ca_certificate_group: "vagrant" 108 | 109 | # Interface where the Kubernetes control plane services are listening on. 110 | k8s_interface: "wg0" 111 | # Interface where the etcd daemons listening on. 112 | k8s_ctl_etcd_interface: "{{ etcd_interface }}" 113 | 114 | # Delegate tasks like creating the Kubernetes CA certificates to the following 115 | # host. This host also communicates with the "kube-apiserver" if required 116 | # for certain tasks. 117 | k8s_ctl_delegate_to: "test-assets" 118 | 119 | # Directory where the Kubernetes certificates are stored on the Ansible 120 | # controller host and where the Ansible can find them to be copied to the 121 | # Kubernetes control plane nodes. 122 | k8s_ctl_ca_conf_directory: "{{ k8s_ca_conf_directory }}" 123 | 124 | # The name of the Kubernetes cluster. 125 | k8s_config_cluster_name: "k8s" 126 | 127 | # Directory where "admin.kubeconfig" (the credentials file) for the "admin" 128 | # user is stored 129 | k8s_admin_conf_dir: "{{ '~/k8s/configs' | expanduser }}" 130 | # Permissions for the directory specified in "k8s_admin_conf_dir" 131 | k8s_admin_conf_dir_perm: "0700" 132 | # Owner of the directory specified in "k8s_admin_conf_dir" and for 133 | # "admin.kubeconfig" stored in this directory. 134 | k8s_admin_conf_owner: "root" 135 | # Group of the directory specified in "k8s_admin_conf_dir" and for 136 | # "admin.kubeconfig" stored in this directory. 137 | k8s_admin_conf_group: "root" 138 | 139 | # Run Kubernetes control plane services as the following user. 140 | k8s_run_as_user: "k8s" 141 | # Run Kubernetes control plane services as the following group. 142 | k8s_run_as_group: "k8s" 143 | 144 | # Key used for encrypting secrets (encryption at-rest) by the 145 | # "kube-apiserver". 146 | k8s_encryption_config_key: "Y29uZmlndXJhdGlvbjIyCg==" 147 | 148 | # Additional settings for the "kube-apiserver". 149 | k8s_apiserver_settings_user: 150 | "enable-aggregator-routing": "true" 151 | 152 | # Directory for the "runc" binaries 153 | runc_bin_directory: "/usr/local/sbin" 154 | 155 | # Common name for "etcd" certificate authority certificates. 156 | ca_etcd_csr_cn: "etcd" 157 | ca_etcd_csr_key_algo: "ecdsa" 158 | ca_etcd_csr_key_size: "384" 159 | 160 | # Common name for "kube-apiserver" certificate authority certificate. 161 | ca_k8s_apiserver_csr_cn: "kubernetes" 162 | ca_k8s_apiserver_csr_key_algo: "ecdsa" 163 | ca_k8s_apiserver_csr_key_size: "384" 164 | 165 | # Common names for "etcd" server, peer and client certificates. 166 | etcd_server_csr_cn: "etcd-server" 167 | etcd_server_csr_key_algo: "ecdsa" 168 | etcd_server_csr_key_size: "384" 169 | 170 | etcd_peer_csr_cn: "etcd-peer" 171 | etcd_peer_csr_key_algo: "ecdsa" 172 | etcd_peer_csr_key_size: "384" 173 | 174 | etcd_client_csr_cn_prefix: "etcd-client" 175 | etcd_client_csr_key_algo: "ecdsa" 176 | etcd_client_csr_key_size: "384" 177 | 178 | # Common names for kube-apiserver, admin and kube-controller-manager certificates. 179 | k8s_apiserver_csr_cn: "k8s-apiserver" 180 | k8s_apiserver_csr_key_algo: "ecdsa" 181 | k8s_apiserver_csr_key_size: "384" 182 | 183 | k8s_admin_csr_cn: "k8s-admin" 184 | k8s_admin_csr_key_algo: "ecdsa" 185 | k8s_admin_csr_key_size: "384" 186 | 187 | k8s_worker_csr_key_algo: "ecdsa" 188 | k8s_worker_csr_key_size: "384" 189 | 190 | k8s_controller_manager_csr_key_algo: "ecdsa" 191 | k8s_controller_manager_csr_key_size: "384" 192 | 193 | k8s_scheduler_csr_key_algo: "ecdsa" 194 | k8s_scheduler_csr_key_size: "384" 195 | 196 | k8s_controller_manager_sa_csr_cn: "k8s-service-accounts" 197 | k8s_controller_manager_sa_csr_key_algo: "ecdsa" 198 | k8s_controller_manager_sa_csr_key_size: "384" 199 | 200 | k8s_kube_proxy_csr_key_algo: "ecdsa" 201 | k8s_kube_proxy_csr_key_size: "384" 202 | -------------------------------------------------------------------------------- /tasks/main.yml: -------------------------------------------------------------------------------- 1 | --- 2 | - name: Create group that runs K8s Control Plane processes 3 | when: 4 | - k8s_run_as_group != "root" 5 | ansible.builtin.group: 6 | name: "{{ k8s_run_as_group }}" 7 | state: present 8 | system: "{{ k8s_run_as_group_system }}" 9 | gid: "{{ k8s_run_as_group_gid | default(omit) }}" 10 | tags: 11 | - k8s-controller 12 | - k8s-controller-base 13 | 14 | - name: Create user that runs K8s Control Plane processes 15 | when: 16 | - k8s_run_as_user != "root" 17 | ansible.builtin.user: 18 | name: "{{ k8s_run_as_user }}" 19 | state: present 20 | shell: "{{ k8s_run_as_user_shell }}" 21 | system: "{{ k8s_run_as_user_system | bool }}" 22 | create_home: "{{ k8s_run_as_user_home is defined and k8s_run_as_user_system != true }}" 23 | home: "{{ k8s_run_as_user_home | default(omit) }}" 24 | uid: "{{ k8s_run_as_user_uid | default(omit) }}" 25 | group: "{{ k8s_run_as_group }}" 26 | tags: 27 | - k8s-controller 28 | - k8s-controller-base 29 | 30 | - name: Create base directory for K8s services log files 31 | ansible.builtin.file: 32 | path: "{{ k8s_ctl_log_base_dir }}" 33 | state: directory 34 | mode: "{{ k8s_ctl_log_base_dir_mode }}" 35 | owner: "{{ k8s_run_as_user }}" 36 | group: "{{ k8s_run_as_group }}" 37 | tags: 38 | - k8s-controller 39 | - k8s-controller-base 40 | 41 | - name: Create directory to store kube-apiserver audit logs 42 | ansible.builtin.file: 43 | path: "{{ k8s_apiserver_audit_log_dir }}" 44 | state: directory 45 | mode: "0750" 46 | owner: "{{ k8s_run_as_user }}" 47 | group: "{{ k8s_run_as_group }}" 48 | tags: 49 | - k8s-controller 50 | - k8s-controller-base 51 | 52 | - name: Create directory for K8s control plane binaries 53 | ansible.builtin.file: 54 | path: "{{ k8s_ctl_bin_dir }}" 55 | state: directory 56 | mode: "0755" 57 | owner: "root" 58 | group: "root" 59 | tags: 60 | - k8s-controller 61 | - k8s-controller-base 62 | 63 | - name: Create control plane configuration base directory 64 | ansible.builtin.file: 65 | path: "{{ k8s_ctl_conf_dir }}" 66 | state: directory 67 | mode: "0750" 68 | owner: "root" 69 | group: "{{ k8s_run_as_group }}" 70 | tags: 71 | - k8s-controller 72 | - k8s-controller-base 73 | 74 | - name: Create PKI directory 75 | ansible.builtin.file: 76 | path: "{{ k8s_ctl_pki_dir }}" 77 | state: directory 78 | mode: "0750" 79 | owner: "root" 80 | group: "{{ k8s_run_as_group }}" 81 | tags: 82 | - k8s-controller 83 | - k8s-controller-base 84 | 85 | - name: Create kube-apiserver config directory 86 | ansible.builtin.file: 87 | path: "{{ k8s_apiserver_conf_dir }}" 88 | state: directory 89 | mode: "0750" 90 | owner: "root" 91 | group: "{{ k8s_run_as_group }}" 92 | tags: 93 | - k8s-controller 94 | - k8s-controller-base 95 | 96 | - name: Create kube-controller-manager config directory 97 | ansible.builtin.file: 98 | path: "{{ k8s_controller_manager_conf_dir }}" 99 | state: directory 100 | mode: "0750" 101 | owner: "root" 102 | group: "{{ k8s_run_as_group }}" 103 | tags: 104 | - k8s-controller 105 | - k8s-controller-base 106 | 107 | - name: Create kube-scheduler config directory 108 | ansible.builtin.file: 109 | path: "{{ k8s_scheduler_conf_dir }}" 110 | state: directory 111 | mode: "0750" 112 | owner: "root" 113 | group: "{{ k8s_run_as_group }}" 114 | tags: 115 | - k8s-controller 116 | - k8s-controller-base 117 | 118 | - name: Create kube-scheduler.yaml 119 | ansible.builtin.template: 120 | src: "templates/etc/kubernetes/controller/kube-scheduler/kube-scheduler.yaml.j2" 121 | dest: "{{ k8s_scheduler_conf_dir }}/kube-scheduler.yaml" 122 | mode: "0440" 123 | owner: "root" 124 | group: "{{ k8s_run_as_group }}" 125 | tags: 126 | - k8s-controller 127 | - k8s-controller-base 128 | 129 | - name: Copy etcd certificates 130 | ansible.builtin.copy: 131 | src: "{{ k8s_ctl_ca_conf_directory }}/{{ item }}" 132 | dest: "{{ k8s_ctl_pki_dir }}/{{ item }}" 133 | mode: "0440" 134 | owner: "root" 135 | group: "{{ k8s_run_as_group }}" 136 | with_items: 137 | - "{{ k8s_ctl_etcd_certificates }}" 138 | tags: 139 | - k8s-controller 140 | - k8s-controller-base 141 | 142 | - name: Copy Kubernetes certificates 143 | ansible.builtin.copy: 144 | src: "{{ k8s_ctl_ca_conf_directory }}/{{ item }}" 145 | dest: "{{ k8s_ctl_pki_dir }}/{{ item }}" 146 | mode: "0440" 147 | owner: "root" 148 | group: "{{ k8s_run_as_group }}" 149 | with_items: 150 | - "{{ k8s_ctl_certificates }}" 151 | tags: 152 | - k8s-controller 153 | - k8s-controller-base 154 | 155 | - name: Downloading official Kubernetes binaries 156 | ansible.builtin.get_url: 157 | url: "https://dl.k8s.io/v{{ k8s_ctl_release }}/bin/linux/amd64/{{ item }}" 158 | checksum: "sha512:https://dl.k8s.io/v{{ k8s_ctl_release }}/bin/linux/amd64/{{ item }}.sha512" 159 | dest: "{{ k8s_ctl_bin_dir }}" 160 | owner: "root" 161 | group: "root" 162 | mode: "0755" 163 | with_items: 164 | - "{{ k8s_ctl_binaries }}" 165 | notify: 166 | - Restart kube-apiserver 167 | - Restart kube-controller-manager 168 | - Restart kube-scheduler 169 | tags: 170 | - k8s-controller 171 | 172 | - name: Create kube-scheduler kubeconfig 173 | ansible.builtin.include_tasks: 174 | file: "authconfig/kube-scheduler.yml" 175 | tags: 176 | - k8s-controller 177 | - k8s-controller-auth-config-scheduler 178 | 179 | - name: Create kube-controller-manager kubeconfig 180 | ansible.builtin.include_tasks: 181 | file: "authconfig/kube-controller-manager.yml" 182 | tags: 183 | - k8s-controller 184 | - k8s-controller-auth-config-controller-manager 185 | 186 | - name: Create admin user kubeconfig 187 | ansible.builtin.include_tasks: 188 | file: "authconfig/kube-admin-user.yml" 189 | tags: 190 | - k8s-controller 191 | - k8s-controller-auth-config-admin-user 192 | 193 | - name: Create encryption-config.yaml 194 | ansible.builtin.copy: 195 | content: "{{ k8s_apiserver_encryption_provider_config }}" 196 | dest: "{{ k8s_apiserver_conf_dir }}/encryption-config.yaml" 197 | mode: "0660" 198 | owner: "root" 199 | group: "{{ k8s_run_as_group }}" 200 | tags: 201 | - k8s-controller 202 | - k8s-controller-base 203 | 204 | - name: Combine k8s_apiserver_settings and k8s_apiserver_settings_user (if defined) 205 | ansible.builtin.set_fact: 206 | k8s_apiserver_settings: "{{ k8s_apiserver_settings | combine(k8s_apiserver_settings_user | default({})) | combine({'etcd-servers': k8s_ctl__etcd_servers}) }}" 207 | vars: 208 | k8s_ctl__etcd_servers: "{% for host in groups['k8s_etcd'] %}https://{{ hostvars[host]['ansible_' + k8s_ctl_etcd_interface].ipv4.address }}:{{ k8s_ctl_etcd_client_port }}{% if not loop.last %},{% endif %}{% endfor %}" 209 | tags: 210 | - k8s-controller 211 | 212 | - name: Create systemd unit file for kube-apiserver 213 | ansible.builtin.template: 214 | src: etc/systemd/system/kube-apiserver.service.j2 215 | dest: /etc/systemd/system/kube-apiserver.service 216 | owner: root 217 | group: root 218 | mode: "0644" 219 | notify: 220 | - Reload systemd 221 | - Restart kube-apiserver 222 | tags: 223 | - k8s-controller 224 | 225 | - name: Enable and start kube-apiserver 226 | ansible.builtin.service: 227 | name: kube-apiserver 228 | enabled: true 229 | state: started 230 | tags: 231 | - k8s-controller 232 | 233 | - name: Combine k8s_controller_manager_settings and k8s_controller_manager_settings_user (if defined) 234 | ansible.builtin.set_fact: 235 | k8s_controller_manager_settings: "{{ k8s_controller_manager_settings | combine(k8s_controller_manager_settings_user | default({})) }}" 236 | tags: 237 | - k8s-controller 238 | 239 | - name: Create systemd unit file for kube-controller-manager 240 | ansible.builtin.template: 241 | src: etc/systemd/system/kube-controller-manager.service.j2 242 | dest: /etc/systemd/system/kube-controller-manager.service 243 | owner: root 244 | group: root 245 | mode: "0644" 246 | notify: 247 | - Reload systemd 248 | - Restart kube-controller-manager 249 | tags: 250 | - k8s-controller 251 | 252 | - name: Enable and start kube-controller-manager 253 | ansible.builtin.service: 254 | name: kube-controller-manager 255 | enabled: true 256 | state: started 257 | tags: 258 | - k8s-controller 259 | 260 | - name: Combine k8s_scheduler_settings and k8s_scheduler_settings_user (if defined) 261 | ansible.builtin.set_fact: 262 | k8s_scheduler_settings: "{{ k8s_scheduler_settings | combine(k8s_scheduler_settings_user | default({})) }}" 263 | tags: 264 | - k8s-controller 265 | 266 | - name: Create systemd unit file for kube-scheduler 267 | ansible.builtin.template: 268 | src: etc/systemd/system/kube-scheduler.service.j2 269 | dest: /etc/systemd/system/kube-scheduler.service 270 | owner: root 271 | group: root 272 | mode: "0644" 273 | notify: 274 | - Reload systemd 275 | - Restart kube-scheduler 276 | tags: 277 | - k8s-controller 278 | 279 | - name: Enable and start kube-scheduler 280 | ansible.builtin.service: 281 | name: kube-scheduler 282 | enabled: true 283 | state: started 284 | tags: 285 | - k8s-controller 286 | 287 | - name: Flush handlers 288 | ansible.builtin.meta: flush_handlers 289 | 290 | - name: Wait 300 seconds for kube-apiserver to become ready 291 | ansible.builtin.wait_for: 292 | host: "{{ k8s_ctl_api_endpoint_host }}" 293 | port: "{{ k8s_ctl_api_endpoint_port }}" 294 | delay: 5 295 | tags: 296 | - k8s-controller 297 | 298 | - name: Apply kube-apiserver-to-kubelet ClusterRole and ClusterRoleBinding 299 | tags: 300 | - k8s-controller 301 | block: 302 | - name: Create temporary directory 303 | ansible.builtin.tempfile: 304 | state: directory 305 | register: k8s_ctl__tmp_dir 306 | delegate_to: "{{ k8s_ctl_delegate_to }}" 307 | changed_when: false 308 | 309 | - name: Change temporary directory permissions 310 | ansible.builtin.file: 311 | path: "{{ k8s_ctl__tmp_dir.path }}" 312 | state: directory 313 | mode: "0755" 314 | run_once: true 315 | delegate_to: "{{ k8s_ctl_delegate_to }}" 316 | changed_when: false 317 | 318 | - name: Copy kube-apiserver-to-kubelet ClusterRole 319 | ansible.builtin.template: 320 | src: "rbac/kube-apiserver-to-kubelet_cluster_role.yaml.j2" 321 | dest: "{{ k8s_ctl__tmp_dir.path }}/kube-apiserver-to-kubelet_cluster_role.yaml" 322 | mode: "0644" 323 | run_once: true 324 | delegate_to: "{{ k8s_ctl_delegate_to }}" 325 | changed_when: false 326 | 327 | - name: Copy kube-apiserver-to-kubelet ClusterRoleBinding 328 | ansible.builtin.template: 329 | src: "rbac/kube-apiserver-to-kubelet_cluster_role_binding.yaml.j2" 330 | dest: "{{ k8s_ctl__tmp_dir.path }}/kube-apiserver-to-kubelet_cluster_role_binding.yaml" 331 | mode: "0644" 332 | run_once: true 333 | delegate_to: "{{ k8s_ctl_delegate_to }}" 334 | changed_when: false 335 | 336 | - name: Apply kube-apiserver-to-kubelet ClusterRole 337 | kubernetes.core.k8s: 338 | state: present 339 | src: "{{ k8s_ctl__tmp_dir.path }}/kube-apiserver-to-kubelet_cluster_role.yaml" 340 | kubeconfig: "{{ k8s_admin_conf_dir }}/admin.kubeconfig" 341 | run_once: true 342 | delegate_to: "{{ k8s_ctl_delegate_to }}" 343 | changed_when: false 344 | 345 | - name: Apply kube-apiserver-to-kubelet ClusterRoleBinding 346 | kubernetes.core.k8s: 347 | state: present 348 | src: "{{ k8s_ctl__tmp_dir.path }}/kube-apiserver-to-kubelet_cluster_role_binding.yaml" 349 | kubeconfig: "{{ k8s_admin_conf_dir }}/admin.kubeconfig" 350 | run_once: true 351 | delegate_to: "{{ k8s_ctl_delegate_to }}" 352 | changed_when: false 353 | 354 | always: 355 | - name: Remove temporary files 356 | ansible.builtin.file: 357 | path: "{{ k8s_ctl__tmp_dir.path }}" 358 | state: absent 359 | run_once: true 360 | delegate_to: "{{ k8s_ctl_delegate_to }}" 361 | changed_when: false 362 | -------------------------------------------------------------------------------- /defaults/main.yml: -------------------------------------------------------------------------------- 1 | --- 2 | # The base directory for Kubernetes configuration and certificate files for 3 | # everything control plane related. After the playbook is done this directory 4 | # contains various sub-folders. 5 | k8s_ctl_conf_dir: "/etc/kubernetes/controller" 6 | 7 | # All certificate files (Private Key Infrastructure related) specified in 8 | # "k8s_ctl_certificates" and "k8s_ctl_etcd_certificates" (see "vars/main.yml") 9 | # will be stored here. Owner of this new directory will be "root". Group will 10 | # be the group specified in "k8s_run_as_group"`. The files in this directory 11 | # will be owned by "root" and group as specified in "k8s_run_as_group"`. File 12 | # permissions will be "0640". 13 | k8s_ctl_pki_dir: "{{ k8s_ctl_conf_dir }}/pki" 14 | 15 | # The directory to store the Kubernetes binaries (see "k8s_ctl_binaries" 16 | # variable in "vars/main.yml"). Owner and group of this new directory 17 | # will be "root" in both cases. Permissions for this directory will be "0755". 18 | # 19 | # NOTE: The default directory "/usr/local/bin" normally already exists on every 20 | # Linux installation with the owner, group and permissions mentioned above. If 21 | # your current settings are different consider a different directory. But make sure 22 | # that the new directory is included in your "$PATH" variable value. 23 | k8s_ctl_bin_dir: "/usr/local/bin" 24 | 25 | # The Kubernetes release. 26 | k8s_ctl_release: "1.33.6" 27 | 28 | # The interface on which the Kubernetes services should listen on. As all cluster 29 | # communication should use a VPN interface the interface name is 30 | # normally "wg0" (WireGuard),"peervpn0" (PeerVPN) or "tap0". 31 | # 32 | # The network interface on which the Kubernetes control plane services should 33 | # listen on. That is: 34 | # 35 | # - kube-apiserver 36 | # - kube-scheduler 37 | # - kube-controller-manager 38 | # 39 | k8s_interface: "eth0" 40 | 41 | # Run Kubernetes control plane service (kube-apiserver, kube-scheduler, 42 | # kube-controller-manager) as this user. 43 | # 44 | # If you want to use a "secure-port" < 1024 for "kube-apiserver" you most 45 | # probably need to run "kube-apiserver" as user "root" (not recommended). 46 | # 47 | # If the user specified in "k8s_run_as_user" does not exist then the role 48 | # will create it. Only if the user already exists the role will not create it 49 | # but it will adjust it's UID/GID and shell if specified (see settings below). 50 | # So make sure that UID, GID and shell matches the existing user if you don't 51 | # want that that user will be changed. 52 | # 53 | # Additionally if "k8s_run_as_user" is "root" then this role wont touch the user 54 | # at all. 55 | k8s_run_as_user: "k8s" 56 | 57 | # UID of user specified in "k8s_run_as_user". If not specified the next available 58 | # UID from "/etc/login.defs" will be taken (see "SYS_UID_MAX" setting in that file). 59 | # k8s_run_as_user_uid: "999" 60 | 61 | # Shell for specified user in "k8s_run_as_user". For increased security keep 62 | # the default. 63 | k8s_run_as_user_shell: "/bin/false" 64 | 65 | # Specifies if the user specified in "k8s_run_as_user" will be a system user (default) 66 | # or not. If "true" the "k8s_run_as_user_home" setting will be ignored. In general 67 | # it makes sense to keep the default as there should be no need to login as 68 | # the user that runs kube-apiserver, kube-scheduler or kube-controller-manager. 69 | k8s_run_as_user_system: true 70 | 71 | # Home directory of user specified in "k8s_run_as_user". Will be ignored if 72 | # "k8s_run_as_user_system" is set to "true". In this case no home directory will 73 | # be created. Normally not needed. 74 | # k8s_run_as_user_home: "/home/k8s" 75 | 76 | # Run Kubernetes daemons (kube-apiserver, kube-scheduler, kube-controller-manager) 77 | # as this group. 78 | # 79 | # Note: If the group specified in "k8s_run_as_group" does not exist then the role 80 | # will create it. Only if the group already exists the role will not create it 81 | # but will adjust GID if specified in "k8s_run_as_group_gid" (see setting below). 82 | k8s_run_as_group: "k8s" 83 | 84 | # GID of group specified in "k8s_run_as_group". If not specified the next available 85 | # GID from "/etc/login.defs" will be take (see "SYS_GID_MAX" setting in that file). 86 | # k8s_run_as_group_gid: "999" 87 | 88 | # Specifies if the group specified in "k8s_run_as_group" will be a system group (default) 89 | # or not. 90 | k8s_run_as_group_system: true 91 | 92 | # By default all tasks that needs to communicate with the Kubernetes 93 | # cluster are executed on local host (127.0.0.1). But if that one 94 | # doesn't have direct connection to the K8s cluster or should be executed 95 | # elsewhere this variable can be changed accordingly. 96 | k8s_ctl_delegate_to: "127.0.0.1" 97 | 98 | # The IP address or hostname of the Kubernetes API endpoint. This variable 99 | # is used by "kube-scheduler" and "kube-controller-manager" to connect 100 | # to the "kube-apiserver" (Kubernetes API server). 101 | # 102 | # By default the first host in the Ansible group "k8s_controller" is 103 | # specified here. NOTE: This setting is not fault tolerant! That means 104 | # if the first host in the Ansible group "k8s_controller" is down 105 | # the worker node and its workload continue working but the worker 106 | # node doesn't receive any updates from Kubernetes API server. 107 | # 108 | # If you have a loadbalancer that distributes traffic between all 109 | # Kubernetes API servers it should be specified here (either its IP 110 | # address or the DNS name). But you need to make sure that the IP 111 | # address or the DNS name you want to use here is included in the 112 | # Kubernetes API server TLS certificate (see "k8s_apiserver_cert_hosts" 113 | # variable of https://github.com/githubixx/ansible-role-kubernetes-ca 114 | # role). If it's not specified you'll get certificate errors in the 115 | # logs of the services mentioned above. 116 | k8s_ctl_api_endpoint_host: "{{ hostvars[groups['k8s_controller'] | first]['ansible_' + hostvars[groups['k8s_controller'] | first]['k8s_interface']].ipv4.address }}" 117 | 118 | # As above just for the port. It specifies on which port the 119 | # Kubernetes API servers are listening. Again if there is a loadbalancer 120 | # in place that distributes the requests to the Kubernetes API servers 121 | # put the port of the loadbalancer here. 122 | k8s_ctl_api_endpoint_port: "6443" 123 | 124 | # Normally "kube-apiserver", "kube-controller-manager" and "kube-scheduler" log 125 | # to "journald". But there are exceptions like the audit log. For this kind of 126 | # log files this directory will be used as a base path. The owner and group 127 | # of this directory will be the one specified in "k8s_run_as_user" and "k8s_run_as_group" 128 | # as these services run as this user and need permissions to create log files 129 | # in this directory. 130 | k8s_ctl_log_base_dir: "/var/log/kubernetes" 131 | 132 | # Permissions for directory specified in "k8s_ctl_log_base_dir" 133 | k8s_ctl_log_base_dir_mode: "0770" 134 | 135 | # The port the control plane components should connect to etcd cluster 136 | k8s_ctl_etcd_client_port: "2379" 137 | 138 | # The interface the etcd cluster is listening on 139 | k8s_ctl_etcd_interface: "eth0" 140 | 141 | # The location of the directory where the Kubernetes certificates are stored. 142 | # These certificates were generated by the "kubernetes_ca" Ansible role if you 143 | # haven't used a different method to generate these certificates. So this 144 | # directory is located on the Ansible controller host. That's normally the 145 | # host where "ansible-playbook" gets executed. "k8s_ca_conf_directory" is used 146 | # by the "kubernetes_ca" Ansible role to store the certificates. So it's 147 | # assumed that this variable is already set. 148 | k8s_ctl_ca_conf_directory: "{{ k8s_ca_conf_directory }}" 149 | 150 | # Directory where "admin.kubeconfig" (the credentials file) for the "admin" user 151 | # is stored. By default this directory (and it's "kubeconfig" file) will 152 | # be stored on the host specified in "k8s_ctl_delegate_to". By default this 153 | # is "127.0.0.1". So if you run "ansible-playbook" locally e.g. the directory 154 | # and file will be created there. 155 | # 156 | # By default the value of this variable will expand to the user's local $HOME 157 | # plus "/k8s/certs". That means if the user's $HOME directory is e.g. 158 | # "/home/da_user" then "k8s_admin_conf_dir" will have a value of 159 | # "/home/da_user/k8s/certs". 160 | k8s_admin_conf_dir: "{{ '~/k8s/configs' | expanduser }}" 161 | 162 | # Permissions for the directory specified in "k8s_admin_conf_dir" 163 | k8s_admin_conf_dir_perm: "0700" 164 | 165 | # Owner of the directory specified in "k8s_admin_conf_dir" and for 166 | # "admin.kubeconfig" stored in this directory. 167 | k8s_admin_conf_owner: "root" 168 | 169 | # Group of the directory specified in "k8s_admin_conf_dir" and for 170 | # "admin.kubeconfig" stored in this directory. 171 | k8s_admin_conf_group: "root" 172 | 173 | # Host where the "admin" user connects to administer the K8s cluster. 174 | # This setting is written into "admin.kubeconfig". This allows to use 175 | # a different host/loadbalancer as the K8s services which might use an internal 176 | # loadbalancer while the "admin" user connects to a different host/loadbalancer 177 | # that distributes traffic to the "kube-apiserver" e.g. 178 | # 179 | # Besides that basically the same comments as for "k8s_ctl_api_endpoint_host" 180 | # variable apply. 181 | k8s_admin_api_endpoint_host: "{{ hostvars[groups['k8s_controller'] | first]['ansible_' + hostvars[groups['k8s_controller'] | first]['k8s_interface']].ipv4.address }}" 182 | 183 | # As above just for the port. 184 | k8s_admin_api_endpoint_port: "6443" 185 | 186 | # Directory to store "kube-apiserver" audit logs (if enabled). The owner and 187 | # group of this directory will be the one specified in "k8s_run_as_user" 188 | # and "k8s_run_as_group". 189 | k8s_apiserver_audit_log_dir: "{{ k8s_ctl_log_base_dir }}/kube-apiserver" 190 | 191 | # The directory to store "kube-apiserver" configuration. 192 | k8s_apiserver_conf_dir: "{{ k8s_ctl_conf_dir }}/kube-apiserver" 193 | 194 | # "kube-apiserver" daemon settings (can be overridden or additional added by defining 195 | # "k8s_apiserver_settings_user") 196 | k8s_apiserver_settings: 197 | "advertise-address": "{{ hostvars[inventory_hostname]['ansible_' + k8s_interface].ipv4.address }}" 198 | "bind-address": "{{ hostvars[inventory_hostname]['ansible_' + k8s_interface].ipv4.address }}" 199 | "secure-port": "6443" 200 | "enable-admission-plugins": "{{ k8s_apiserver_admission_plugins | join(',') }}" 201 | "allow-privileged": "true" 202 | "authorization-mode": "Node,RBAC" 203 | "audit-log-maxage": "30" 204 | "audit-log-maxbackup": "3" 205 | "audit-log-maxsize": "100" 206 | "audit-log-path": "{{ k8s_apiserver_audit_log_dir }}/audit.log" 207 | "event-ttl": "1h" 208 | "kubelet-preferred-address-types": "InternalIP,Hostname,ExternalIP" # "--kubelet-preferred-address-types" defaults to: 209 | # "Hostname,InternalDNS,InternalIP,ExternalDNS,ExternalIP" 210 | # Needs to be changed to make "kubectl logs" and "kubectl exec" work. 211 | "runtime-config": "api/all=true" 212 | "service-cluster-ip-range": "10.32.0.0/16" 213 | "service-node-port-range": "30000-32767" 214 | "client-ca-file": "{{ k8s_ctl_pki_dir }}/ca-k8s-apiserver.pem" 215 | "etcd-cafile": "{{ k8s_ctl_pki_dir }}/ca-etcd.pem" 216 | "etcd-certfile": "{{ k8s_ctl_pki_dir }}/cert-k8s-apiserver-etcd.pem" 217 | "etcd-keyfile": "{{ k8s_ctl_pki_dir }}/cert-k8s-apiserver-etcd-key.pem" 218 | "encryption-provider-config": "{{ k8s_apiserver_conf_dir }}/encryption-config.yaml" 219 | "encryption-provider-config-automatic-reload": "true" 220 | "kubelet-certificate-authority": "{{ k8s_ctl_pki_dir }}/ca-k8s-apiserver.pem" 221 | "kubelet-client-certificate": "{{ k8s_ctl_pki_dir }}/cert-k8s-apiserver.pem" 222 | "kubelet-client-key": "{{ k8s_ctl_pki_dir }}/cert-k8s-apiserver-key.pem" 223 | "service-account-key-file": "{{ k8s_ctl_pki_dir }}/cert-k8s-controller-manager-sa.pem" 224 | "service-account-signing-key-file": "{{ k8s_ctl_pki_dir }}/cert-k8s-controller-manager-sa-key.pem" 225 | "service-account-issuer": "https://{{ groups.k8s_controller | first }}:6443" 226 | "tls-cert-file": "{{ k8s_ctl_pki_dir }}/cert-k8s-apiserver.pem" 227 | "tls-private-key-file": "{{ k8s_ctl_pki_dir }}/cert-k8s-apiserver-key.pem" 228 | 229 | # kube-apiserver admission plugins used in "k8s_apiserver_settings" variable 230 | # for "enable-admission-plugins" key. 231 | k8s_apiserver_admission_plugins: 232 | - NodeRestriction 233 | - NamespaceLifecycle 234 | - LimitRanger 235 | - ServiceAccount 236 | - TaintNodesByCondition 237 | - Priority 238 | - DefaultTolerationSeconds 239 | - DefaultStorageClass 240 | - PersistentVolumeClaimResize 241 | - MutatingAdmissionWebhook 242 | - ValidatingAdmissionWebhook 243 | - ResourceQuota 244 | - PodSecurity 245 | - StorageObjectInUseProtection 246 | - RuntimeClass 247 | - CertificateApproval 248 | - CertificateSigning 249 | - ClusterTrustBundleAttest 250 | - CertificateSubjectRestriction 251 | - DefaultIngressClass 252 | 253 | # This is the content of "encryption-config.yaml". Used by "kube-apiserver" 254 | # (see "encryption-provider-config" option in "k8s_apiserver_settings"). 255 | # "kube-apiserver" will use this configuration to encrypt data before storing 256 | # it in etcd (encrypt data at-rest). 257 | # 258 | # The configuration below is a usable example but might not fit your needs. 259 | # So please review carefully! E.g. you might want to replace "aescbc" provider 260 | # with a different one like "secretbox". As you can see this configuration only 261 | # encrypts "secrets" at-rest. But it's also possible to encrypt other K8s 262 | # resources. NOTE: "identity" provider doesn't encrypt anything! That means 263 | # plain text. In the configuration below it's used as fallback. 264 | # 265 | # If you keep the default defined below please make sure to specify the 266 | # variable "k8s_encryption_config_key" somewhere (e.g. "group_vars/all.yml" or 267 | # even better use "ansible-vault" to store these kind of secrets). 268 | # This needs to be a base64 encoded value. To create such a value on Linux 269 | # run the following command: 270 | # 271 | # head -c 32 /dev/urandom | base64 272 | # 273 | # For a detailed description please visit: 274 | # https://kubernetes.io/docs/tasks/administer-cluster/encrypt-data/ 275 | # 276 | # How to rotate the encryption key or to implement encryption at-rest in 277 | # an existing K8s cluster please visit: 278 | # https://kubernetes.io/docs/tasks/administer-cluster/encrypt-data/#rotating-a-decryption-key 279 | k8s_apiserver_encryption_provider_config: | 280 | --- 281 | kind: EncryptionConfiguration 282 | apiVersion: apiserver.config.k8s.io/v1 283 | resources: 284 | - resources: 285 | - secrets 286 | providers: 287 | - aescbc: 288 | keys: 289 | - name: key1 290 | secret: {{ k8s_encryption_config_key }} 291 | - identity: {} 292 | 293 | # The directory to store controller manager configuration. 294 | k8s_controller_manager_conf_dir: "{{ k8s_ctl_conf_dir }}/kube-controller-manager" 295 | 296 | # K8s controller manager settings (can be overridden or additional added by defining 297 | # "k8s_controller_manager_settings_user") 298 | k8s_controller_manager_settings: 299 | "bind-address": "{{ hostvars[inventory_hostname]['ansible_' + k8s_interface].ipv4.address }}" 300 | "secure-port": "10257" 301 | "cluster-cidr": "10.200.0.0/16" 302 | "allocate-node-cidrs": "true" 303 | "cluster-name": "kubernetes" 304 | "authentication-kubeconfig": "{{ k8s_controller_manager_conf_dir }}/kubeconfig" 305 | "authorization-kubeconfig": "{{ k8s_controller_manager_conf_dir }}/kubeconfig" 306 | "kubeconfig": "{{ k8s_controller_manager_conf_dir }}/kubeconfig" 307 | "leader-elect": "true" 308 | "service-cluster-ip-range": "10.32.0.0/16" 309 | "cluster-signing-cert-file": "{{ k8s_ctl_pki_dir }}/cert-k8s-apiserver.pem" 310 | "cluster-signing-key-file": "{{ k8s_ctl_pki_dir }}/cert-k8s-apiserver-key.pem" 311 | "root-ca-file": "{{ k8s_ctl_pki_dir }}/ca-k8s-apiserver.pem" 312 | "requestheader-client-ca-file": "{{ k8s_ctl_pki_dir }}/ca-k8s-apiserver.pem" 313 | "service-account-private-key-file": "{{ k8s_ctl_pki_dir }}/cert-k8s-controller-manager-sa-key.pem" 314 | "use-service-account-credentials": "true" 315 | "client-ca-file": "{{ k8s_ctl_pki_dir }}/cert-k8s-apiserver.pem" 316 | "tls-cert-file": "{{ k8s_ctl_pki_dir }}/cert-k8s-controller-manager.pem" 317 | "tls-private-key-file": "{{ k8s_ctl_pki_dir }}/cert-k8s-controller-manager-key.pem" 318 | 319 | # The directory to store scheduler configuration. 320 | k8s_scheduler_conf_dir: "{{ k8s_ctl_conf_dir }}/kube-scheduler" 321 | 322 | # kube-scheduler settings 323 | k8s_scheduler_settings: 324 | "bind-address": "{{ hostvars[inventory_hostname]['ansible_' + k8s_interface].ipv4.address }}" 325 | "config": "{{ k8s_scheduler_conf_dir }}/kube-scheduler.yaml" 326 | "authentication-kubeconfig": "{{ k8s_scheduler_conf_dir }}/kubeconfig" 327 | "authorization-kubeconfig": "{{ k8s_scheduler_conf_dir }}/kubeconfig" 328 | "requestheader-client-ca-file": "{{ k8s_ctl_pki_dir }}/ca-k8s-apiserver.pem" 329 | "client-ca-file": "{{ k8s_ctl_pki_dir }}/cert-k8s-apiserver.pem" 330 | "tls-cert-file": "{{ k8s_ctl_pki_dir }}/cert-k8s-scheduler.pem" 331 | "tls-private-key-file": "{{ k8s_ctl_pki_dir }}/cert-k8s-scheduler-key.pem" 332 | 333 | # These sandbox security/sandbox related settings will be used for 334 | # "kube-apiserver", "kube-scheduler" and "kube-controller-manager" 335 | # systemd units. These options will be placed in the "[Service]" section. 336 | # The default settings should be just fine for increased security of the 337 | # mentioned services. So it makes sense to keep them if possible. 338 | # 339 | # For more information see: 340 | # https://www.freedesktop.org/software/systemd/man/systemd.service.html#Options 341 | # 342 | # The options below "RestartSec=5" are mostly security/sandbox related settings 343 | # and limit the exposure of the system towards the unit's processes. You can add 344 | # or remove options as needed of course. For more information see: 345 | # https://www.freedesktop.org/software/systemd/man/systemd.exec.html 346 | k8s_ctl_service_options: 347 | - User={{ k8s_run_as_user }} 348 | - Group={{ k8s_run_as_group }} 349 | - Restart=on-failure 350 | - RestartSec=5 351 | - NoNewPrivileges=true 352 | - ProtectHome=true 353 | - PrivateTmp=true 354 | - PrivateUsers=true 355 | - ProtectSystem=full 356 | - ProtectClock=true 357 | - ProtectKernelModules=true 358 | - ProtectKernelTunables=true 359 | - ProtectKernelLogs=true 360 | - ProtectControlGroups=true 361 | - ProtectHostname=true 362 | - ProtectControlGroups=true 363 | - RestrictNamespaces=true 364 | - RestrictRealtime=true 365 | - RestrictSUIDSGID=true 366 | - CapabilityBoundingSet=~CAP_SYS_PTRACE 367 | - CapabilityBoundingSet=~CAP_KILL 368 | - CapabilityBoundingSet=~CAP_MKNOD 369 | - CapabilityBoundingSet=~CAP_SYS_CHROOT 370 | - CapabilityBoundingSet=~CAP_SYS_ADMIN 371 | - CapabilityBoundingSet=~CAP_SETUID 372 | - CapabilityBoundingSet=~CAP_SETGID 373 | - CapabilityBoundingSet=~CAP_SETPCAP 374 | - CapabilityBoundingSet=~CAP_CHOWN 375 | - SystemCallFilter=@system-service 376 | - ReadWritePaths=-/usr/libexec/kubernetes 377 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # ansible-role-kubernetes-controller 2 | 3 | This role is used in [Kubernetes the not so hard way with Ansible - Control plane](https://www.tauceti.blog/post/kubernetes-the-not-so-hard-way-with-ansible-control-plane/). It installs the Kubernetes API server, scheduler and controller manager. For more information about this role please have a look at [Kubernetes the not so hard way with Ansible - Control plane](https://www.tauceti.blog/post/kubernetes-the-not-so-hard-way-with-ansible-control-plane/). 4 | 5 | ## Versions 6 | 7 | I tag every release and try to stay with [semantic versioning](http://semver.org). If you want to use the role I recommend to checkout the latest tag. The master branch is basically development while the tags mark stable releases. But in general I try to keep master in good shape too. A tag `28.0.0+1.33.6` means this is release `28.0.0` of this role and it's meant to be used with Kubernetes version `1.33.6` (but should work with any K8s 1.33.x release of course). If the role itself changes `X.Y.Z` before `+` will increase. If the Kubernetes version changes `X.Y.Z` after `+` will increase too. This allows to tag bugfixes and new major versions of the role while it's still developed for a specific Kubernetes release. That's especially useful for Kubernetes major releases with breaking changes. 8 | 9 | ## Requirements 10 | 11 | This role requires that you already created some certificates for Kubernetes API server (see [Kubernetes the not so hard way with Ansible - Certificate authority (CA)](https://www.tauceti.blog/post/kubernetes-the-not-so-hard-way-with-ansible-certificate-authority/)). The role copies the certificates from `k8s_ctl_ca_conf_directory` (which is by default the same as `k8s_ca_conf_directory` used by `githubixx.kubernetes_ca` role) to the destination host. 12 | 13 | Your hosts on which you want to install Kubernetes should be able to communicate with each other of course. To add an additional layer of security you can setup a fully meshed VPN with WireGuard e.g. (see [Kubernetes the not so hard way with Ansible - WireGuard](https://www.tauceti.blog/post/kubernetes-the-not-so-hard-way-with-ansible-wireguard/)). This encrypts every communication between the Kubernetes nodes if the Kubernetes processes use the WireGuard interface. Using WireGuard actually makes it also easily possible to have a Kubernetes cluster that is distributed in various data centers e.g. 14 | 15 | And of course an [etcd](https://etcd.io/) cluster (see [Kubernetes the not so hard way with Ansible - etcd cluster](https://www.tauceti.blog/post/kubernetes-the-not-so-hard-way-with-ansible-etcd/)) to store the state of the Kubernetes cluster. 16 | 17 | ## Supported OS 18 | 19 | - Ubuntu 22.04 (Jammy Jellyfish) 20 | - Ubuntu 24.04 (Noble Numbat) (recommended) 21 | 22 | ## Changelog 23 | 24 | **Change history:** 25 | 26 | See full [CHANGELOG.md](https://github.com/githubixx/ansible-role-kubernetes-controller/blob/master/CHANGELOG.md) 27 | 28 | **Recent changes:** 29 | 30 | ## 28.0.0+1.33.6 31 | 32 | - **UPDATE** 33 | - update `k8s_ctl_release` to `1.33.6` 34 | 35 | ## 27.1.1+1.32.9 36 | 37 | - **UPDATE** 38 | - update `README.md` 39 | 40 | ## 27.1.0+1.32.9 41 | 42 | - **UPDATE** 43 | - update `k8s_ctl_release` to `1.32.9` 44 | 45 | - **OTHER CHANGES** 46 | - fix for Ansible 2.19 in `kube-apiserver.service.j2`: remove `cluster_hosts()` macro and adjust `combine k8s_apiserver_settings and k8s_apiserver_settings_user` task accordingly 47 | - `defaults/main.yml`: `k8s_ctl_api_endpoint_host`/`k8s_admin_api_endpoint_host` - simplify the complex default variables for endpoint hosts to avoid nested template construction 48 | 49 | - **MOLECULE** 50 | - install `python3-kubernetes` package instead `kubernetes` Pip in `prepare.yml` 51 | 52 | ## 27.0.0+1.32.8 53 | 54 | - **BREAKING** 55 | - Removed Ubuntu 20.04 because reached end of life 56 | - Introduce `k8s_apiserver_admission_plugins` variable. Previously in `k8s_apiserver_settings` variable the values of `enable-admission-plugins` key was a string with list of admission plugins separated by commas. To make that string more readable `k8s_apiserver_admission_plugins` variable was introduced which is now a list of admissions plugins that is consumed by `enable-admission-plugins`. If you didn't changed `k8s_apiserver_admission_plugins` variable or used your own settings nothing changed for you. 57 | 58 | - **UPDATE** 59 | - update `k8s_ctl_release` to `1.32.8` 60 | 61 | - **MOLECULE** 62 | - Removed Ubuntu 20.04 because reached end of life 63 | - Fix `ansible-lint` issues 64 | 65 | ## Installation 66 | 67 | - Directly download from Github (Change into Ansible roles directory before cloning. You can figure out the role path by using `ansible-config dump | grep DEFAULT_ROLES_PATH` command): 68 | `git clone https://github.com/githubixx/ansible-role-kubernetes-controller.git githubixx.kubernetes_controller` 69 | 70 | - Via `ansible-galaxy` command and download directly from Ansible Galaxy: 71 | `ansible-galaxy install role githubixx.kubernetes_controller` 72 | 73 | - Create a `requirements.yml` file with the following content (this will download the role from Github) and install with 74 | `ansible-galaxy role install -r requirements.yml` (change `version` if needed): 75 | 76 | ```yaml 77 | --- 78 | roles: 79 | - name: githubixx.kubernetes_controller 80 | src: https://github.com/githubixx/ansible-role-kubernetes-controller.git 81 | version: 28.0.0+1.33.6 82 | ``` 83 | 84 | ## Role (default) variables 85 | 86 | ```yaml 87 | # The base directory for Kubernetes configuration and certificate files for 88 | # everything control plane related. After the playbook is done this directory 89 | # contains various sub-folders. 90 | k8s_ctl_conf_dir: "/etc/kubernetes/controller" 91 | 92 | # All certificate files (Private Key Infrastructure related) specified in 93 | # "k8s_ctl_certificates" and "k8s_ctl_etcd_certificates" (see "vars/main.yml") 94 | # will be stored here. Owner of this new directory will be "root". Group will 95 | # be the group specified in "k8s_run_as_group"`. The files in this directory 96 | # will be owned by "root" and group as specified in "k8s_run_as_group"`. File 97 | # permissions will be "0640". 98 | k8s_ctl_pki_dir: "{{ k8s_ctl_conf_dir }}/pki" 99 | 100 | # The directory to store the Kubernetes binaries (see "k8s_ctl_binaries" 101 | # variable in "vars/main.yml"). Owner and group of this new directory 102 | # will be "root" in both cases. Permissions for this directory will be "0755". 103 | # 104 | # NOTE: The default directory "/usr/local/bin" normally already exists on every 105 | # Linux installation with the owner, group and permissions mentioned above. If 106 | # your current settings are different consider a different directory. But make sure 107 | # that the new directory is included in your "$PATH" variable value. 108 | k8s_ctl_bin_dir: "/usr/local/bin" 109 | 110 | # The Kubernetes release. 111 | k8s_ctl_release: "1.33.6" 112 | 113 | # The interface on which the Kubernetes services should listen on. As all cluster 114 | # communication should use a VPN interface the interface name is 115 | # normally "wg0" (WireGuard),"peervpn0" (PeerVPN) or "tap0". 116 | # 117 | # The network interface on which the Kubernetes control plane services should 118 | # listen on. That is: 119 | # 120 | # - kube-apiserver 121 | # - kube-scheduler 122 | # - kube-controller-manager 123 | # 124 | k8s_interface: "eth0" 125 | 126 | # Run Kubernetes control plane service (kube-apiserver, kube-scheduler, 127 | # kube-controller-manager) as this user. 128 | # 129 | # If you want to use a "secure-port" < 1024 for "kube-apiserver" you most 130 | # probably need to run "kube-apiserver" as user "root" (not recommended). 131 | # 132 | # If the user specified in "k8s_run_as_user" does not exist then the role 133 | # will create it. Only if the user already exists the role will not create it 134 | # but it will adjust it's UID/GID and shell if specified (see settings below). 135 | # So make sure that UID, GID and shell matches the existing user if you don't 136 | # want that that user will be changed. 137 | # 138 | # Additionally if "k8s_run_as_user" is "root" then this role wont touch the user 139 | # at all. 140 | k8s_run_as_user: "k8s" 141 | 142 | # UID of user specified in "k8s_run_as_user". If not specified the next available 143 | # UID from "/etc/login.defs" will be taken (see "SYS_UID_MAX" setting in that file). 144 | # k8s_run_as_user_uid: "999" 145 | 146 | # Shell for specified user in "k8s_run_as_user". For increased security keep 147 | # the default. 148 | k8s_run_as_user_shell: "/bin/false" 149 | 150 | # Specifies if the user specified in "k8s_run_as_user" will be a system user (default) 151 | # or not. If "true" the "k8s_run_as_user_home" setting will be ignored. In general 152 | # it makes sense to keep the default as there should be no need to login as 153 | # the user that runs kube-apiserver, kube-scheduler or kube-controller-manager. 154 | k8s_run_as_user_system: true 155 | 156 | # Home directory of user specified in "k8s_run_as_user". Will be ignored if 157 | # "k8s_run_as_user_system" is set to "true". In this case no home directory will 158 | # be created. Normally not needed. 159 | # k8s_run_as_user_home: "/home/k8s" 160 | 161 | # Run Kubernetes daemons (kube-apiserver, kube-scheduler, kube-controller-manager) 162 | # as this group. 163 | # 164 | # Note: If the group specified in "k8s_run_as_group" does not exist then the role 165 | # will create it. Only if the group already exists the role will not create it 166 | # but will adjust GID if specified in "k8s_run_as_group_gid" (see setting below). 167 | k8s_run_as_group: "k8s" 168 | 169 | # GID of group specified in "k8s_run_as_group". If not specified the next available 170 | # GID from "/etc/login.defs" will be take (see "SYS_GID_MAX" setting in that file). 171 | # k8s_run_as_group_gid: "999" 172 | 173 | # Specifies if the group specified in "k8s_run_as_group" will be a system group (default) 174 | # or not. 175 | k8s_run_as_group_system: true 176 | 177 | # By default all tasks that needs to communicate with the Kubernetes 178 | # cluster are executed on local host (127.0.0.1). But if that one 179 | # doesn't have direct connection to the K8s cluster or should be executed 180 | # elsewhere this variable can be changed accordingly. 181 | k8s_ctl_delegate_to: "127.0.0.1" 182 | 183 | # The IP address or hostname of the Kubernetes API endpoint. This variable 184 | # is used by "kube-scheduler" and "kube-controller-manager" to connect 185 | # to the "kube-apiserver" (Kubernetes API server). 186 | # 187 | # By default the first host in the Ansible group "k8s_controller" is 188 | # specified here. NOTE: This setting is not fault tolerant! That means 189 | # if the first host in the Ansible group "k8s_controller" is down 190 | # the worker node and its workload continue working but the worker 191 | # node doesn't receive any updates from Kubernetes API server. 192 | # 193 | # If you have a loadbalancer that distributes traffic between all 194 | # Kubernetes API servers it should be specified here (either its IP 195 | # address or the DNS name). But you need to make sure that the IP 196 | # address or the DNS name you want to use here is included in the 197 | # Kubernetes API server TLS certificate (see "k8s_apiserver_cert_hosts" 198 | # variable of https://github.com/githubixx/ansible-role-kubernetes-ca 199 | # role). If it's not specified you'll get certificate errors in the 200 | # logs of the services mentioned above. 201 | k8s_ctl_api_endpoint_host: "{% set controller_host = groups['k8s_controller'][0] %}{{ hostvars[controller_host]['ansible_' + hostvars[controller_host]['k8s_interface']].ipv4.address }}" 202 | 203 | # As above just for the port. It specifies on which port the 204 | # Kubernetes API servers are listening. Again if there is a loadbalancer 205 | # in place that distributes the requests to the Kubernetes API servers 206 | # put the port of the loadbalancer here. 207 | k8s_ctl_api_endpoint_port: "6443" 208 | 209 | # Normally "kube-apiserver", "kube-controller-manager" and "kube-scheduler" log 210 | # to "journald". But there are exceptions like the audit log. For this kind of 211 | # log files this directory will be used as a base path. The owner and group 212 | # of this directory will be the one specified in "k8s_run_as_user" and "k8s_run_as_group" 213 | # as these services run as this user and need permissions to create log files 214 | # in this directory. 215 | k8s_ctl_log_base_dir: "/var/log/kubernetes" 216 | 217 | # Permissions for directory specified in "k8s_ctl_log_base_dir" 218 | k8s_ctl_log_base_dir_mode: "0770" 219 | 220 | # The port the control plane components should connect to etcd cluster 221 | k8s_ctl_etcd_client_port: "2379" 222 | 223 | # The interface the etcd cluster is listening on 224 | k8s_ctl_etcd_interface: "eth0" 225 | 226 | # The location of the directory where the Kubernetes certificates are stored. 227 | # These certificates were generated by the "kubernetes_ca" Ansible role if you 228 | # haven't used a different method to generate these certificates. So this 229 | # directory is located on the Ansible controller host. That's normally the 230 | # host where "ansible-playbook" gets executed. "k8s_ca_conf_directory" is used 231 | # by the "kubernetes_ca" Ansible role to store the certificates. So it's 232 | # assumed that this variable is already set. 233 | k8s_ctl_ca_conf_directory: "{{ k8s_ca_conf_directory }}" 234 | 235 | # Directory where "admin.kubeconfig" (the credentials file) for the "admin" user 236 | # is stored. By default this directory (and it's "kubeconfig" file) will 237 | # be stored on the host specified in "k8s_ctl_delegate_to". By default this 238 | # is "127.0.0.1". So if you run "ansible-playbook" locally e.g. the directory 239 | # and file will be created there. 240 | # 241 | # By default the value of this variable will expand to the user's local $HOME 242 | # plus "/k8s/certs". That means if the user's $HOME directory is e.g. 243 | # "/home/da_user" then "k8s_admin_conf_dir" will have a value of 244 | # "/home/da_user/k8s/certs". 245 | k8s_admin_conf_dir: "{{ '~/k8s/configs' | expanduser }}" 246 | 247 | # Permissions for the directory specified in "k8s_admin_conf_dir" 248 | k8s_admin_conf_dir_perm: "0700" 249 | 250 | # Owner of the directory specified in "k8s_admin_conf_dir" and for 251 | # "admin.kubeconfig" stored in this directory. 252 | k8s_admin_conf_owner: "root" 253 | 254 | # Group of the directory specified in "k8s_admin_conf_dir" and for 255 | # "admin.kubeconfig" stored in this directory. 256 | k8s_admin_conf_group: "root" 257 | 258 | # Host where the "admin" user connects to administer the K8s cluster. 259 | # This setting is written into "admin.kubeconfig". This allows to use 260 | # a different host/loadbalancer as the K8s services which might use an internal 261 | # loadbalancer while the "admin" user connects to a different host/loadbalancer 262 | # that distributes traffic to the "kube-apiserver" e.g. 263 | # 264 | # Besides that basically the same comments as for "k8s_ctl_api_endpoint_host" 265 | # variable apply. 266 | k8s_admin_api_endpoint_host: "{% set controller_host = groups['k8s_controller'][0] %}{{ hostvars[controller_host]['ansible_' + hostvars[controller_host]['k8s_interface']].ipv4.address }}" 267 | 268 | # As above just for the port. 269 | k8s_admin_api_endpoint_port: "6443" 270 | 271 | # Directory to store "kube-apiserver" audit logs (if enabled). The owner and 272 | # group of this directory will be the one specified in "k8s_run_as_user" 273 | # and "k8s_run_as_group". 274 | k8s_apiserver_audit_log_dir: "{{ k8s_ctl_log_base_dir }}/kube-apiserver" 275 | 276 | # The directory to store "kube-apiserver" configuration. 277 | k8s_apiserver_conf_dir: "{{ k8s_ctl_conf_dir }}/kube-apiserver" 278 | 279 | # "kube-apiserver" daemon settings (can be overridden or additional added by defining 280 | # "k8s_apiserver_settings_user") 281 | k8s_apiserver_settings: 282 | "advertise-address": "{{ hostvars[inventory_hostname]['ansible_' + k8s_interface].ipv4.address }}" 283 | "bind-address": "{{ hostvars[inventory_hostname]['ansible_' + k8s_interface].ipv4.address }}" 284 | "secure-port": "6443" 285 | "enable-admission-plugins": "{{ k8s_apiserver_admission_plugins | join(',') }}" 286 | "allow-privileged": "true" 287 | "authorization-mode": "Node,RBAC" 288 | "audit-log-maxage": "30" 289 | "audit-log-maxbackup": "3" 290 | "audit-log-maxsize": "100" 291 | "audit-log-path": "{{ k8s_apiserver_audit_log_dir }}/audit.log" 292 | "event-ttl": "1h" 293 | "kubelet-preferred-address-types": "InternalIP,Hostname,ExternalIP" # "--kubelet-preferred-address-types" defaults to: 294 | # "Hostname,InternalDNS,InternalIP,ExternalDNS,ExternalIP" 295 | # Needs to be changed to make "kubectl logs" and "kubectl exec" work. 296 | "runtime-config": "api/all=true" 297 | "service-cluster-ip-range": "10.32.0.0/16" 298 | "service-node-port-range": "30000-32767" 299 | "client-ca-file": "{{ k8s_ctl_pki_dir }}/ca-k8s-apiserver.pem" 300 | "etcd-cafile": "{{ k8s_ctl_pki_dir }}/ca-etcd.pem" 301 | "etcd-certfile": "{{ k8s_ctl_pki_dir }}/cert-k8s-apiserver-etcd.pem" 302 | "etcd-keyfile": "{{ k8s_ctl_pki_dir }}/cert-k8s-apiserver-etcd-key.pem" 303 | "encryption-provider-config": "{{ k8s_apiserver_conf_dir }}/encryption-config.yaml" 304 | "encryption-provider-config-automatic-reload": "true" 305 | "kubelet-certificate-authority": "{{ k8s_ctl_pki_dir }}/ca-k8s-apiserver.pem" 306 | "kubelet-client-certificate": "{{ k8s_ctl_pki_dir }}/cert-k8s-apiserver.pem" 307 | "kubelet-client-key": "{{ k8s_ctl_pki_dir }}/cert-k8s-apiserver-key.pem" 308 | "service-account-key-file": "{{ k8s_ctl_pki_dir }}/cert-k8s-controller-manager-sa.pem" 309 | "service-account-signing-key-file": "{{ k8s_ctl_pki_dir }}/cert-k8s-controller-manager-sa-key.pem" 310 | "service-account-issuer": "https://{{ groups.k8s_controller | first }}:6443" 311 | "tls-cert-file": "{{ k8s_ctl_pki_dir }}/cert-k8s-apiserver.pem" 312 | "tls-private-key-file": "{{ k8s_ctl_pki_dir }}/cert-k8s-apiserver-key.pem" 313 | 314 | # kube-apiserver admission plugins used in "k8s_apiserver_settings" variable 315 | # for "enable-admission-plugins" key. 316 | k8s_apiserver_admission_plugins: 317 | - NodeRestriction 318 | - NamespaceLifecycle 319 | - LimitRanger 320 | - ServiceAccount 321 | - TaintNodesByCondition 322 | - Priority 323 | - DefaultTolerationSeconds 324 | - DefaultStorageClass 325 | - PersistentVolumeClaimResize 326 | - MutatingAdmissionWebhook 327 | - ValidatingAdmissionWebhook 328 | - ResourceQuota 329 | - PodSecurity 330 | - StorageObjectInUseProtection 331 | - RuntimeClass 332 | - CertificateApproval 333 | - CertificateSigning 334 | - ClusterTrustBundleAttest 335 | - CertificateSubjectRestriction 336 | - DefaultIngressClass 337 | 338 | # This is the content of "encryption-config.yaml". Used by "kube-apiserver" 339 | # (see "encryption-provider-config" option in "k8s_apiserver_settings"). 340 | # "kube-apiserver" will use this configuration to encrypt data before storing 341 | # it in etcd (encrypt data at-rest). 342 | # 343 | # The configuration below is a usable example but might not fit your needs. 344 | # So please review carefully! E.g. you might want to replace "aescbc" provider 345 | # with a different one like "secretbox". As you can see this configuration only 346 | # encrypts "secrets" at-rest. But it's also possible to encrypt other K8s 347 | # resources. NOTE: "identity" provider doesn't encrypt anything! That means 348 | # plain text. In the configuration below it's used as fallback. 349 | # 350 | # If you keep the default defined below please make sure to specify the 351 | # variable "k8s_encryption_config_key" somewhere (e.g. "group_vars/all.yml" or 352 | # even better use "ansible-vault" to store these kind of secrets). 353 | # This needs to be a base64 encoded value. To create such a value on Linux 354 | # run the following command: 355 | # 356 | # head -c 32 /dev/urandom | base64 357 | # 358 | # For a detailed description please visit: 359 | # https://kubernetes.io/docs/tasks/administer-cluster/encrypt-data/ 360 | # 361 | # How to rotate the encryption key or to implement encryption at-rest in 362 | # an existing K8s cluster please visit: 363 | # https://kubernetes.io/docs/tasks/administer-cluster/encrypt-data/#rotating-a-decryption-key 364 | k8s_apiserver_encryption_provider_config: | 365 | --- 366 | kind: EncryptionConfiguration 367 | apiVersion: apiserver.config.k8s.io/v1 368 | resources: 369 | - resources: 370 | - secrets 371 | providers: 372 | - aescbc: 373 | keys: 374 | - name: key1 375 | secret: {{ k8s_encryption_config_key }} 376 | - identity: {} 377 | 378 | # The directory to store controller manager configuration. 379 | k8s_controller_manager_conf_dir: "{{ k8s_ctl_conf_dir }}/kube-controller-manager" 380 | 381 | # K8s controller manager settings (can be overridden or additional added by defining 382 | # "k8s_controller_manager_settings_user") 383 | k8s_controller_manager_settings: 384 | "bind-address": "{{ hostvars[inventory_hostname]['ansible_' + k8s_interface].ipv4.address }}" 385 | "secure-port": "10257" 386 | "cluster-cidr": "10.200.0.0/16" 387 | "allocate-node-cidrs": "true" 388 | "cluster-name": "kubernetes" 389 | "authentication-kubeconfig": "{{ k8s_controller_manager_conf_dir }}/kubeconfig" 390 | "authorization-kubeconfig": "{{ k8s_controller_manager_conf_dir }}/kubeconfig" 391 | "kubeconfig": "{{ k8s_controller_manager_conf_dir }}/kubeconfig" 392 | "leader-elect": "true" 393 | "service-cluster-ip-range": "10.32.0.0/16" 394 | "cluster-signing-cert-file": "{{ k8s_ctl_pki_dir }}/cert-k8s-apiserver.pem" 395 | "cluster-signing-key-file": "{{ k8s_ctl_pki_dir }}/cert-k8s-apiserver-key.pem" 396 | "root-ca-file": "{{ k8s_ctl_pki_dir }}/ca-k8s-apiserver.pem" 397 | "requestheader-client-ca-file": "{{ k8s_ctl_pki_dir }}/ca-k8s-apiserver.pem" 398 | "service-account-private-key-file": "{{ k8s_ctl_pki_dir }}/cert-k8s-controller-manager-sa-key.pem" 399 | "use-service-account-credentials": "true" 400 | "client-ca-file": "{{ k8s_ctl_pki_dir }}/cert-k8s-apiserver.pem" 401 | "tls-cert-file": "{{ k8s_ctl_pki_dir }}/cert-k8s-controller-manager.pem" 402 | "tls-private-key-file": "{{ k8s_ctl_pki_dir }}/cert-k8s-controller-manager-key.pem" 403 | 404 | # The directory to store scheduler configuration. 405 | k8s_scheduler_conf_dir: "{{ k8s_ctl_conf_dir }}/kube-scheduler" 406 | 407 | # kube-scheduler settings 408 | k8s_scheduler_settings: 409 | "bind-address": "{{ hostvars[inventory_hostname]['ansible_' + k8s_interface].ipv4.address }}" 410 | "config": "{{ k8s_scheduler_conf_dir }}/kube-scheduler.yaml" 411 | "authentication-kubeconfig": "{{ k8s_scheduler_conf_dir }}/kubeconfig" 412 | "authorization-kubeconfig": "{{ k8s_scheduler_conf_dir }}/kubeconfig" 413 | "requestheader-client-ca-file": "{{ k8s_ctl_pki_dir }}/ca-k8s-apiserver.pem" 414 | "client-ca-file": "{{ k8s_ctl_pki_dir }}/cert-k8s-apiserver.pem" 415 | "tls-cert-file": "{{ k8s_ctl_pki_dir }}/cert-k8s-scheduler.pem" 416 | "tls-private-key-file": "{{ k8s_ctl_pki_dir }}/cert-k8s-scheduler-key.pem" 417 | 418 | # These sandbox security/sandbox related settings will be used for 419 | # "kube-apiserver", "kube-scheduler" and "kube-controller-manager" 420 | # systemd units. These options will be placed in the "[Service]" section. 421 | # The default settings should be just fine for increased security of the 422 | # mentioned services. So it makes sense to keep them if possible. 423 | # 424 | # For more information see: 425 | # https://www.freedesktop.org/software/systemd/man/systemd.service.html#Options 426 | # 427 | # The options below "RestartSec=5" are mostly security/sandbox related settings 428 | # and limit the exposure of the system towards the unit's processes. You can add 429 | # or remove options as needed of course. For more information see: 430 | # https://www.freedesktop.org/software/systemd/man/systemd.exec.html 431 | k8s_ctl_service_options: 432 | - User={{ k8s_run_as_user }} 433 | - Group={{ k8s_run_as_group }} 434 | - Restart=on-failure 435 | - RestartSec=5 436 | - NoNewPrivileges=true 437 | - ProtectHome=true 438 | - PrivateTmp=true 439 | - PrivateUsers=true 440 | - ProtectSystem=full 441 | - ProtectClock=true 442 | - ProtectKernelModules=true 443 | - ProtectKernelTunables=true 444 | - ProtectKernelLogs=true 445 | - ProtectControlGroups=true 446 | - ProtectHostname=true 447 | - ProtectControlGroups=true 448 | - RestrictNamespaces=true 449 | - RestrictRealtime=true 450 | - RestrictSUIDSGID=true 451 | - CapabilityBoundingSet=~CAP_SYS_PTRACE 452 | - CapabilityBoundingSet=~CAP_KILL 453 | - CapabilityBoundingSet=~CAP_MKNOD 454 | - CapabilityBoundingSet=~CAP_SYS_CHROOT 455 | - CapabilityBoundingSet=~CAP_SYS_ADMIN 456 | - CapabilityBoundingSet=~CAP_SETUID 457 | - CapabilityBoundingSet=~CAP_SETGID 458 | - CapabilityBoundingSet=~CAP_SETPCAP 459 | - CapabilityBoundingSet=~CAP_CHOWN 460 | - SystemCallFilter=@system-service 461 | - ReadWritePaths=-/usr/libexec/kubernetes 462 | ``` 463 | 464 | The kube-apiserver settings defined in `k8s_apiserver_settings` can be overridden by defining a variable called `k8s_apiserver_settings_user`. You can also add additional settings by using this variable. E.g. to override `audit-log-maxage` and `audit-log-maxbackup` default values and add `watch-cache` add the following settings to `group_vars/k8s.yml`: 465 | 466 | ```yaml 467 | k8s_apiserver_settings_user: 468 | "audit-log-maxage": "40" 469 | "audit-log-maxbackup": "4" 470 | "watch-cache": "false" 471 | ``` 472 | 473 | The same is true for the `kube-controller-manager` by adding entries to `k8s_controller_manager_settings_user` variable. For `kube-scheduler` add entries to `k8s_scheduler_settings_user` variable to override/add settings in `k8s_scheduler_settings` dictionary. 474 | 475 | ## Example Playbook 476 | 477 | ```yaml 478 | - hosts: k8s_controller 479 | roles: 480 | - githubixx.kubernetes_controller 481 | ``` 482 | 483 | ## Testing 484 | 485 | This role has a small test setup that is created using [Molecule](https://github.com/ansible-community/molecule), libvirt (vagrant-libvirt) and QEMU/KVM. Please see my blog post [Testing Ansible roles with Molecule, libvirt (vagrant-libvirt) and QEMU/KVM](https://www.tauceti.blog/posts/testing-ansible-roles-with-molecule-libvirt-vagrant-qemu-kvm/) how to setup. The Molecule test configuration is in [molecule/default](https://github.com/githubixx/ansible-role-kubernetes-controller/tree/master/molecule/default). 486 | 487 | Afterwards Molecule can be executed: 488 | 489 | ```bash 490 | molecule converge 491 | ``` 492 | 493 | This will setup a few virtual machines (VM) with supported Ubuntu OS and installs an Kubernetes cluster but without the worker nodes (so no nodes with `kube-proxy` and `kubelet` installed). A small verification step is also included: 494 | 495 | ```bash 496 | molecule verify 497 | ``` 498 | 499 | To clean up run 500 | 501 | ```bash 502 | molecule destroy 503 | ``` 504 | 505 | ## License 506 | 507 | GNU GENERAL PUBLIC LICENSE Version 3 508 | 509 | ## Author Information 510 | 511 | [http://www.tauceti.blog](http://www.tauceti.blog) 512 | -------------------------------------------------------------------------------- /CHANGELOG.md: -------------------------------------------------------------------------------- 1 | # Changelog 2 | 3 | ## 28.0.0+1.33.6 4 | 5 | - **UPDATE** 6 | - update `k8s_ctl_release` to `1.33.6` 7 | - `meta/main.yml`: set `min_ansible_version` to `2.15` 8 | 9 | - **MOLECULE** 10 | - replace Ubuntu 20.04 with 24.04 11 | 12 | ## 27.1.1+1.32.9 13 | 14 | - **UPDATE** 15 | - update `README.md' 16 | 17 | ## 27.1.0+1.32.9 18 | 19 | - **UPDATE** 20 | - update `k8s_ctl_release` to `1.32.9` 21 | 22 | - **OTHER CHANGES** 23 | - fix for Ansible 2.19 in `kube-apiserver.service.j2`: remove `cluster_hosts()` macro and adjust `combine k8s_apiserver_settings and k8s_apiserver_settings_user` task accordingly 24 | - `defaults/main.yml`: `k8s_ctl_api_endpoint_host`/`k8s_admin_api_endpoint_host` - simplify the complex default variables for endpoint hosts to avoid nested template construction 25 | 26 | - **MOLECULE** 27 | - install `python3-kubernetes` package instead `kubernetes` Pip in `prepare.yml` 28 | 29 | ## 27.0.0+1.32.8 30 | 31 | - **BREAKING** 32 | - Removed Ubuntu 20.04 because reached end of life 33 | - Introduce `k8s_apiserver_admission_plugins` variable. Previously in `k8s_apiserver_settings` variable the values of `enable-admission-plugins` key was a string with list of admission plugins separated by commas. To make that string more readable `k8s_apiserver_admission_plugins` variable was introduced which is now a list of admissions plugins that is consumed by `enable-admission-plugins`. If you didn't changed `k8s_apiserver_admission_plugins` variable or used your own settings nothing changed for you. 34 | 35 | - **UPDATE** 36 | - update `k8s_ctl_release` to `1.32.8` 37 | 38 | - **MOLECULE** 39 | - Removed Ubuntu 20.04 because reached end of life 40 | - Fix `ansible-lint` issues 41 | 42 | ## 26.0.2+1.31.11 43 | 44 | - **UPDATE** 45 | - update `k8s_ctl_release` to `1.31.11` 46 | 47 | ## 26.0.1+1.31.5 48 | 49 | - **OTHER CHANGES** 50 | - add flags `client-ca-file`, `tls-cert-file` and `tls-private-key-file` to `k8s_controller_manager_settings` (contribution by @hajowieland). Fixes [#69](https://github.com/githubixx/ansible-role-kubernetes-controller/issues/69) 51 | - add flags `client-ca-file`, `tls-cert-file` and `tls-private-key-file` to `k8s_scheduler_settings` 52 | 53 | ## 26.0.0+1.31.5 54 | 55 | - **UPDATE** 56 | - update `k8s_ctl_release` to `1.31.5` 57 | 58 | ## 25.0.1+1.30.9 59 | 60 | - **UPDATE** 61 | - update `k8s_ctl_release` to `1.30.9` 62 | 63 | - **OTHER CHANGES** 64 | - update `.gitignore` 65 | - fix `ansible-lint` issues 66 | 67 | ## 25.0.0+1.30.5 68 | 69 | - **UPDATE** 70 | - update `k8s_ctl_release` to `1.30.5` 71 | 72 | - **OTHER CHANGES** 73 | - support Ubuntu 24.04 74 | - update `.yamllint` 75 | 76 | ## 24.0.2+1.29.9 77 | 78 | - **OTHER CHANGES** 79 | - fix download URLs for Kubernetes binaries (see: [Download Kubernetes - Binaries](https://kubernetes.io/releases/download/#binaries) 80 | 81 | ## 24.0.1+1.29.9 82 | 83 | - **UPDATE** 84 | - update `k8s_ctl_release` to `1.29.9` 85 | 86 | ## 24.0.0+1.29.4 87 | 88 | - **UPDATE** 89 | - update `k8s_ctl_release` to `1.29.4` 90 | 91 | ## 24.0.0+1.29.3 92 | 93 | - **UPDATE** 94 | - update `k8s_ctl_release` to `1.29.3` 95 | - Molecule: use `alvistack` instead of `generic` Vagrant boxes 96 | 97 | ## 23.1.2+1.28.8 98 | 99 | - **UPDATE** 100 | - update `k8s_ctl_release` to `1.28.8` 101 | 102 | ## 23.1.1+1.28.5 103 | 104 | - **BUGFIX** 105 | - ClusterRoleBinding `system:kube-apiserver` needs to honor `k8s_apiserver_csr_cn` value for as username 106 | - Because of the previous change move `files/kube-apiserver-to-kubelet_cluster_role.yaml -> templates/rbac/kube-apiserver-to-kubelet_cluster_role.yaml.j2` and `files/kube-apiserver-to-kubelet_cluster_role_binding.yaml -> templates/rbac/kube-apiserver-to-kubelet_cluster_role_binding.yaml.j2` as both files became a Jinja2 template. 107 | 108 | ## 23.1.0+1.28.5 109 | 110 | - **MOLECULE** 111 | - Change to Ubuntu 22.04 for test-assets VM 112 | - Adjust common names for certificates / change algo to ecdsa and algo size 113 | 114 | - **OTHER CHANGES** 115 | - Fix permissions for temporary directory 116 | - Adjust Github action because of Ansible Galaxy changes 117 | 118 | ## 23.0.0+1.28.5 119 | 120 | - **UPDATE** 121 | - Update `k8s_ctl_release` to `1.28.5` 122 | 123 | - **BREAKING** 124 | - Extend `enable-admission-plugins` in `k8s_apiserver_settings` by: `PodSecurity,Priority,StorageObjectInUseProtection,RuntimeClass,CertificateApproval,CertificateSigning,ClusterTrustBundleAttest,CertificateSubjectRestriction,DefaultIngressClass`. These are enabled by default if this flag is not specified (see [Admission Controllers Reference](https://kubernetes.io/docs/reference/access-authn-authz/admission-controllers/) for more information). 125 | 126 | - **MOLECULE** 127 | - Change IP addresses 128 | 129 | ## 22.0.0+1.27.8 130 | 131 | - **PLEASE READ CAREFULLY** 132 | This release contains quite a few potential breaking changes! So review carefully before rolling out the new version of this role! A bigger part of the whole changes are related to increase security. While most of the new variables and defaults should be just fine and should just work out of the box side effects might occur. 133 | 134 | All the newly introduced or changed variables have detailed comments in [README](https://github.com/githubixx/ansible-role-kubernetes-controller/blob/master/README.md). So please read them carefully! 135 | 136 | This refactoring was needed to make it possible to have `githubixx.kubernetes_controller` and `githubixx.kubernetes_worker` deployed on the same host e.g. They were some intersections between the two roles that had to be fixed. 137 | 138 | **Please remove** `/var/lib/kubernetes/admin.kubeconfig` on the K8s controller nodes (if you didn't change the default directory for this file). Older versions of this role created this file. It's no longer needed. It contains the `kubeconfig` (so basically the credentials file) for the `admin` user. This is a very powerful user (actually the user with the most permissions). So use with care and store the file in a secure place! `admin.kubeconfig` should only be used at the very beginning to create a new user with less permissions. 139 | 140 | - **UPDATE** 141 | - update `k8s_ctl_release` to `1.27.8` 142 | 143 | - **BREAKING** 144 | - Rename variable `k8s_conf_dir` to `k8s_ctl_conf_dir`. Additionally the default value changed from `/usr/lib/kubernetes` to `/etc/kubernetes/controller`. 145 | - Introduce variable `k8s_admin_conf_dir`. Currently it only stores `admin.kubeconfig` which is basically the credentials file of the `admin` "user". Formerly this file was stored in the directory specified in the (now removed) `k8s_config_directory` variable. The default value of `k8s_admin_conf_dir` is the same as the removed `k8s_config_directory`. Additionally to set permissions for `k8s_admin_conf_dir` the following variables were introduced: `k8s_admin_conf_dir_perm`, `k8s_admin_conf_owner` and `k8s_admin_conf_group`. 146 | - Introduce variable `k8s_ctl_pki_dir`. All certificate files specified in `k8s_ctl_certificates` and `k8s_ctl_etcd_certificates` (see `vars/main.yml`) will be stored here. Related to this: Certificate related settings in `k8s_apiserver_settings` used `k8s_conf_dir` before and now use `k8s_ctl_pki_dir`. That's `client-ca-file`, `etcd-cafile`, `etcd-certfile`, `etcd-keyfile`, `kubelet-certificate-authority`, `kubelet-client-certificate`, `kubelet-client-key`, `service-account-key-file`, `service-account-signing-key-file`, `tls-cert-file` and `tls-private-key-file`. For `k8s_controller_manager_settings` that's: `cluster-signing-cert-file`, `cluster-signing-key-file`, `root-ca-file`, `requestheader-client-ca-file` and `service-account-private-key-file`. And for `k8s_scheduler_settings` that's: `requestheader-client-ca-file`. 147 | - Rename variable `k8s_bin_dir` to `k8s_ctl_bin_dir`. 148 | - Rename variable `k8s_release` to `k8s_ctl_release`. 149 | - The default value for `k8s_interface` changed from `tap0` to `eth0`. 150 | - Rename variable `k8s_controller_binaries` to `k8s_ctl_binaries`. Additionally this variable is no longer defined in `defaults/main.yml` but in `vars/main.yml`. Since this list is fixed anyways it makes no sense to allow to modify this list. 151 | - Rename variable `k8s_certificates` to `k8s_ctl_certificates`. 152 | - Rename variable `etcd_certificates` to `k8s_ctl_etcd_certificates`. Additionally this variable is no longer defined in `defaults/main.yml` but in `vars/main.yml`. Since this list is fixed anyways it makes no sense to allow to modify this list. 153 | - Rename variable `etcd_client_port` to `k8s_ctl_etcd_client_port`. 154 | - Rename variable `etcd_interface` to `k8s_ctl_etcd_interface`. Additionally the default value changed from `tap0` to `eth0`. 155 | - Use `k8s_ctl_etcd_interface` variable instead of `k8s_interface` for `--etcd-servers` option in `templates/etc/systemd/system/kube-apiserver.service.j2`. Normally `etcd` and `kube-apiserver` listen on the same interface. But if someone specified `k8s_ctl_etcd_interface` (formerly `etcd_interface` in the context of this role) it was basically ignored as the value of `k8s_interface` was used instead. That's fixed now. 156 | - Rename variable `k8s_controller_delegate_to` to `k8s_ctl_delegate_to`. 157 | - Introduce `k8s_apiserver_conf_dir` variable. `encryption-config.yaml` is now located in `k8s_apiserver_conf_dir`. 158 | - Change default value of `k8s_controller_manager_conf_dir` to `"{{ k8s_ctl_conf_dir }}/kube-controller-manager"`. 159 | - Change default value of `k8s_scheduler_conf_dir` to `"{{ k8s_ctl_conf_dir }}/kube-scheduler"`. 160 | - Rename `kube-controller-manager.kubeconfig` to `kubeconfig`. This affects `k8s_controller_manager_settings` and the following settings: `authentication-kubeconfig`, `authorization-kubeconfig` and `kubeconfig`. 161 | - Rename `kube-scheduler.kubeconfig` to `kubeconfig`. This affects `k8s_scheduler_settings` and the following settings: `authentication-kubeconfig"` and `authorization-kubeconfig`. 162 | - Added new option `encryption-provider-config-automatic-reload: "true"` to `k8s_apiserver_settings`. In case the file specified in `encryption-provider-config` changes `kube-apiserver` will automatically reload that file. This is handy if one wants to change the encryption provider (also see new variable `k8s_apiserver_encryption_provider_config`) 163 | - Introduce `k8s_ctl_service_options` variable. As mentioned above already previously `kube-apiserver`, `kube-controller-manager` and `kube-scheduler` were running as user `root`. Now these services will run as `k8s_run_as_user` and `k8s_run_as_group`. Additionally `systemd` allows to limit the exposure of the system towards the unit's processes. Basically all settings below `RestartSec=5` are related to increase security and limit what the process allowed to do. So these settings reduce the attack surface quite a bit already. They're not perfect but a starting point. If you want the previous behavior just remove all settings besides `Restart` and `RestartSec`. But that also means that they'll run again as `root` user. 164 | - The following variables are no longer used and can be removed: `k8s_encryption_config_directory`, `k8s_encryption_config_owner`, `k8s_encryption_config_group`, `k8s_encryption_config_directory_perm` and `k8s_encryption_config_file_perm`. Previously these values were needed to specify permissions on the Ansible controller for this file/directory. Since this file is now generated directly on the K8s controller nodes they're no longer needed. That also means you can remove `encryption-config.yaml` from Ansible controller node (like your workstation e.g.) 165 | - The variable `k8s_config_directory` is gone. It's no longer in use. After the upgrade to this release you can delete this directory (if you accept the new default!) and it's content (make a backup esp. of `admin.kubeconfig` file - just in case!) 166 | - Rename `k8s_ca_conf_directory` to `k8s_ctl_ca_conf_directory` 167 | 168 | - **FEATURE** 169 | - Introduce `k8s_run_as_user` variable. Previously all control plane services like `kube-apiserver`, `kube-scheduler` and `kube-controller-manager` run as user `root`. Security-wise that's not optimal. There is just no need to run them as `root` as long they use a listening port > `1024` which they do by default. In this version all these services will run as the user specified with `k8s_run_as_user` which is `k8s` by default. Related to this variable are the new variables `k8s_run_as_user_shell`, `k8s_run_as_user_system`, `k8s_run_as_group` and `k8s_run_as_group_system`. See [README](https://github.com/githubixx/ansible-role-kubernetes-controller/blob/master/README.md) for further information about this variables. The defaults should be just fine even for upgrading from a previous version of this role. 170 | - Introduce `k8s_ctl_api_endpoint_host` and `k8s_ctl_api_endpoint_port` variables. Previously `kube-scheduler` and `kube-controller-manager` where configured to connect to the first host in the Ansible `k8s_controller` group and communicate with the `kube-apiserver` that was running there. This was hard-coded and couldn't be changed. If that host was down the K8s worker nodes didn't receive any updates. Now one can install and use a load balancer like `haproxy` e.g. that distributes requests between all `kube-apiserver`'s and takes a `kube-apiserver` out of rotation if that one is down (also see my Ansible [haproxy role](https://github.com/githubixx/ansible-role-haproxy) for that use case). The default is still to use the first host/kube-apiserver in the Ansible `k8s_controller` group. So behavior-wise nothing changed basically. 171 | - Introduce `k8s_admin_api_endpoint_host` and `k8s_admin_api_endpoint_port` variables. For these two variables the same is basically true as for `k8s_ctl_api_endpoint_host` and `k8s_ctl_api_endpoint_port` variables above. But these settings are meant to be used by the `admin` user that this role creates by default. These settings are written into `admin.kubeconfig`. So it's possible to configure another host/load balancer for the `admin` user as for the K8s control plane services mentioned in the previous paragraph. 172 | - Introduce `k8s_ctl_log_base_dir` and `k8s_ctl_log_base_dir_mode`. Normally `kube-apiserver`, `kube-controller-manager` and `kube-scheduler` log to `journald`. But there are exceptions like the audit log. For this kind of log files this directory will be used as a base path. 173 | - Introduce `k8s_apiserver_audit_log_dir`. Directory to store kube-apiserver audit logs. 174 | - Introduce `k8s_apiserver_encryption_provider_config` variable. Previously the content of this file was hard-coded. Now it's exposed via this variable. The content of that variable and the previously hard-coded value are the same. So if you keep the default when upgrading everything stays the same in that regards. **NOTE**: Changing this configuration and deploy the changes can potentially cause quite some problems! Make sure to read [Encrypting Confidential Data at Rest](https://kubernetes.io/docs/tasks/administer-cluster/encrypt-data/) and esp. [Rotating a decryption key](https://kubernetes.io/docs/tasks/administer-cluster/encrypt-data/#rotating-a-decryption-key)! 175 | - Add task to generate `kubeconfig` for `admin` user (previously this was a separate [playbook](https://github.com/githubixx/ansible-kubernetes-playbooks/tree/v15.0.0_r1.27.5/kubeauthconfig)). 176 | - Add task to generate `kubeconfig` for `kube-controller-manager` service (previously this was a separate [playbook](https://github.com/githubixx/ansible-kubernetes-playbooks/tree/v15.0.0_r1.27.5/kubeauthconfig)). 177 | - Add task to generate `kubeconfig` for `kube-scheduler` service (previously this was a separate [playbook](https://github.com/githubixx/ansible-kubernetes-playbooks/tree/v15.0.0_r1.27.5/kubeauthconfig)). 178 | - When downloading the Kubernetes binaries the task checks the SHA512 checksum 179 | - Make `kube-scheduler` and `kube-controller-manager` wait until `kube-apiserver` has started and is listening on a port 180 | 181 | - **OTHER CHANGES** 182 | - Extend `k8s_ctl_certificates` (formerly `k8s_certificates`) list by `cert-k8s-scheduler` and `cert-k8s-controller-manager` files. This was needed as the `kubeconfig` files are now generated on the K8s controller nodes and no longer on the Ansible controller host. Previously it was needed to prepare these files upfront before installing this role. That's no longer needed. Also see **FEATURES** list above. 183 | - Use `kubernetes.core.*` modules instead of `kubectl` binary 184 | - Fix some `ansible-lint` issues 185 | 186 | - **MOLECULE** 187 | - Updated all files to reflect the changes introduces with this version 188 | - Tasks for creating `kubeconfig` for `kube-controller-manager`, `kube-scheduler`, `admin` user and `encryption configuration` are no longer needed as they're now part of `kubernetes_controller` role 189 | - Add `haproxy` to Ubuntu 22 hosts to test new `k8s_ctl_api_endpoint_host` and `k8s_ctl_api_endpoint_port` settings 190 | - Add tasks to install [ansible-role-cni](https://github.com/githubixx/ansible-role-cni) and [ansible-role-runc](https://github.com/githubixx/ansible-role-runc) 191 | - Use `kubernetes.core.k8s_info` module instead of calling `kubectl` binary 192 | 193 | ## 21.1.3+1.27.5 194 | 195 | - rename `githubixx.harden-linux` to `githubixx.harden_linux` 196 | 197 | ## 21.1.2+1.27.5 198 | 199 | - rename `githubixx.kubernetes-ca` to `githubixx.kubernetes_ca` 200 | 201 | ## 21.1.1+1.27.5 202 | 203 | - `molecule/default/molecule.yml`: use Ubuntu 20.04 instead of 22.04 for `test-assets` for now because of certificate problems with Python `urllib` module 204 | 205 | ## 21.1.0+1.27.5 206 | 207 | - add support for Ubuntu 22.04 208 | 209 | ## 21.0.0+1.27.5 210 | 211 | - **BREAKING**: `meta/main.yml`: change role_name from `kubernetes-controller` to `kubernetes_controller`. This is a requirement since quite some time for Ansible Galaxy. But the requirement was introduced after this role already existed for quite some time. So please update the name of the role in your playbook accordingly! 212 | - update `k8s_release` to `1.27.5` 213 | - `meta/main.yml`: remove Ubuntu 18.04 as supported OS (reached EOL) 214 | 215 | ## 20.0.1+1.26.8 216 | 217 | - update `k8s_release` to `1.26.8` 218 | - `kube-apiserver` needs to have network-online.target ready 219 | - `kube-controller-manager` needs to have network-online.target ready 220 | - `kube-scheduler` needs to have network-online.target ready 221 | 222 | ## 20.0.0+1.26.4 223 | 224 | - update `k8s_release` to `1.26.4` 225 | - add Molecule test 226 | - add Github workflow 227 | 228 | ## 19.2.0+1.25.9 229 | 230 | - update `k8s_release` to `1.25.9` 231 | - `kube-apiserver`: remove `--apiserver-count` flag. It has been deprecated and will be removed in a future K8s release. 232 | - `templates/var/lib/kube-scheduler/kube-scheduler.yaml.j2`: `KubeSchedulerConfiguration v1beta2` is deprecated in Kubernetes v1.25, will be removed in v1.26 233 | 234 | ## 19.1.0+1.25.5 235 | 236 | - Introduce `k8s_controller_delegate_to` variable. By default it's set to `127.0.0.1` and reflects the same value as before. 237 | 238 | ## 19.0.0+1.25.5 239 | 240 | - update `k8s_release` to `1.25.5` 241 | 242 | ## 18.0.1+1.24.9 243 | 244 | - update `k8s_release` to `1.24.9` 245 | 246 | ## 18.0.0+1.24.4 247 | 248 | - update `k8s_release` to `1.24.4` 249 | 250 | ## 17.1.0+1.23.10 251 | 252 | - update `k8s_release` to `1.23.10` 253 | 254 | ## 17.0.0+1.23.3 255 | 256 | - update `k8s_release` to `1.23.3` 257 | - add parameter `authentication-kubeconfig`, `authorization-kubeconfig` and `requestheader-client-ca-file` to `k8s_scheduler_settings` (see [K8s Deprecations 1.23](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.23.md#deprecation)) 258 | - remove `healthzBindAddress` and `metricsBindAddress` from `kube-scheduler.yaml.j2` (deprecated) 259 | - this role now requires Ansible >= 2.9 260 | 261 | ## 16.1.0+1.22.6 262 | 263 | - update `k8s_release` to `1.22.6` 264 | - use `kubescheduler.config.k8s.io/v1beta2` in `templates/var/lib/kube-scheduler/kube-scheduler.yaml.j2` (`v1beta1` will be removed in Kubernetes v1.23 - see [Remove scheduler policy config and cc v1beta1](https://github.com/kubernetes/enhancements/issues/2901) 265 | 266 | ## 16.0.0+1.22.5 267 | 268 | - update `k8s_release` to `1.22.5` 269 | - add parameter `authentication-kubeconfig`, `authorization-kubeconfig` and `requestheader-client-ca-file` to `k8s_controller_manager_settings` (see [K8s Deprecations 1.22](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.22.md#deprecation)) 270 | - removed `kubelet-https: "true"` from `k8s_apiserver_settings` as no longer supported by `kube-apiserver` (see: [Mark --kubelet-https deprecated](https://github.com/kubernetes/kubernetes/pull/91630)) 271 | 272 | ## 15.0.1+1.21.8 273 | 274 | - update `k8s_release` to `1.21.8` 275 | 276 | ## 15.0.0+1.21.4 277 | 278 | - update `k8s_release` to `1.21.4` 279 | - remove Ubuntu 16.04 support 280 | 281 | ## 14.1.0+1.20.10 282 | 283 | - update `k8s_release` to `1.20.10` 284 | 285 | ## 14.0.0+1.20.8 286 | 287 | - update `k8s_release` to `1.20.8` 288 | 289 | ## 13.1.0+1.19.12 290 | 291 | - update `k8s_release` to `1.19.12` 292 | 293 | ## 13.0.0+1.19.4 294 | 295 | - update 'k8s_release' to `1.19.4` 296 | - `KubeSchedulerConfiguration` graduates to Beta (see [Scheduler Configuration](https://kubernetes.io/docs/reference/scheduling/config)). Upgrade `kubescheduler.config.k8s.io/v1alpha2` to `kubescheduler.config.k8s.io/v1beta1` 297 | 298 | ## 12.2.0+1.18.12 299 | 300 | - update `k8s_release` to `1.18.12` 301 | 302 | ## 12.1.0+1.18.6 303 | 304 | - update `k8s_release` to `1.18.6` 305 | - added `"allocate-node-cidrs": "true"` to`k8s_controller_manager_settings` otherwise `cluster-cidr` setting won't be used by `kube-controller-manager` 306 | - creating ClusterRole's and ClusterRoleBindings is now delegated to `127.0.0.1` (localhost) instead of picking the first Kubernetes controller node for that task 307 | 308 | ## 12.0.1+1.18.5 309 | 310 | - added Ubuntu 20.04 (Focal Fossa) as supported platform 311 | 312 | ## 12.0.0+1.18.5 313 | 314 | - update `k8s_release` to `1.18.5` 315 | - renamed `cert-etcd.pem/cert-etcd-key.pem` to `cert-k8s-apiserver-etcd.pem/cert-k8s-apiserver-etcd-key.pem`. This was also adjusted in `etcd_certificates` list. The changed name makes it more obvious that this is a client certificate for `kube-apiserver` used to connect to a TLS secured `etcd` cluster. In fact `kube-apiserver` is just a client to `etcd` as all clients. In my [ansible-role-kubernetes-ca](https://github.com/githubixx/ansible-role-kubernetes-ca) this was also changed accordingly (see `etcd_additional_clients` list). [ansible-role-kubernetes-ca](https://github.com/githubixx/ansible-role-kubernetes-ca) is now able to generate client certificates for other services like Traefik or Cilium which are often used in a Kubernetes cluster. So the already existing `etcd` cluster for Kubernetes (esp. for `kube-apiserver`) can be reused for other components. 316 | - replaced `cluster-signing-cert-file": "{{k8s_conf_dir}}/ca-k8s-apiserver.pem` with `cluster-signing-cert-file": "{{k8s_conf_dir}}/cert-k8s-apiserver.pem` in `k8s_controller_manager_settings` 317 | - removed deprecated `port` setting in `k8s_controller_manager_settings` which was replaced by `secure-port` setting (default value `10257`) 318 | - removed `k8s_apiserver_secure_port` as it makes no sense. The value `6443` can be set in `k8s_apiserver_settings` (`"secure-port": "6443"`) as it is not used elsewhere 319 | - `kubescheduler.config.k8s.io/v1alpha1` changed to `kubescheduler.config.k8s.io/v1alpha2` in `kube-scheduler.yaml.j2` (see: [CHANGELOG](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.18.md#kube-scheduler-1)) 320 | 321 | ## 11.0.0+1.17.4 322 | 323 | - update `k8s_release` to `1.17.4` 324 | - `rbac.authorization.k8s.io/v1beta1` changed to `rbac.authorization.k8s.io/v1` 325 | - update `runtime-config` (needs boolean expression now) 326 | 327 | ## 10.1.1+1.16.8 328 | 329 | - update `k8s_release` to `1.16.8` 330 | 331 | ## Remove old tags 332 | 333 | - The following tags are removed as they're not compatible with Ansible Galaxy and I guess nobody uses them anymore: 334 | 335 | ```bash 336 | r2.0.0_v1.9.0 337 | r2.0.1_v1.9.0 338 | r2.0.2_v1.9.1 339 | r3.0.0_v1.9.1 340 | r3.0.0_v1.9.3 341 | r3.0.0_v1.9.8 342 | r4.0.1_v1.10.4 343 | r4.0.2_v1.10.4 344 | r4.0.3_v1.10.4 345 | r4.0.4_v1.10.8 346 | r5.0.1_v1.12.3 347 | v1.0.0_r1.5.1 348 | v1.0.0_v1.8.0 349 | v1.0.0_v1.8.2 350 | v1.1.0_v1.8.4 351 | v1.1.1_v1.8.4 352 | v1.1.2_v1.8.4 353 | v1.2.0_v1.8.4 354 | ``` 355 | 356 | ## 10.1.0+1.16.3 357 | 358 | - strengthen file permissions for certificate files and other config files 359 | 360 | ## 10.0.0+1.16.3 361 | 362 | - update `k8s_release` to `1.16.3` 363 | - remove deprecated `enable-swagger-ui` option from `kube-apiserver` 364 | 365 | ## 9.0.0+1.15.6 366 | 367 | - update `k8s_release` to `1.15.6` 368 | 369 | ## 9.0.0+1.15.3 370 | 371 | - update `k8s_release` to `1.15.3` 372 | 373 | ## 8.0.1+1.14.6 374 | 375 | - update `k8s_release` to `1.14.6` 376 | 377 | ## 8.0.0+1.14.2 378 | 379 | - update `k8s_release` to `1.14.2` 380 | - add all admissions plugins to `enable-admission-plugins` option that are enabled by default in K8s 1.14 381 | - remove `Initializers` admission plugin (no longer available in 1.14) 382 | 383 | ## 7.0.0+1.13.5 384 | 385 | - update `k8s_release` to `1.13.5` 386 | - introduce `bind-address` flag and bind on VPN IP by default 387 | - introduce `port` flag for kube-controller-manager and set value to 0 to disable unsecure port 388 | 389 | ## 6.0.0+1.13.2 390 | 391 | - update `k8s_release` to `1.13.2` 392 | - kube-apiserver: `--experimental-encryption-provider-config` flag is deprecated and replaced in favor of `--encryption-provider-config` 393 | - kube-apiserver: the configuration file referenced by `--encryption-provider-config` now uses `kind: EncryptionConfiguration` and `apiVersion: apiserver.config.k8s.io/v1`. Support for `kind: EncryptionConfig` and `apiVersion: v1` is deprecated and will be removed in a future release. See [kubeencryptionconfig](https://github.com/githubixx/ansible-kubernetes-playbooks/tree/master/kubeencryptionconfig) and [Kubernetes the not so hard way with Ansible - Certificate authority](https://www.tauceti.blog/post/kubernetes-the-not-so-hard-way-with-ansible-certificate-authority/) (search for `kubeencryptionconfig.yml`). To avoid deprecation warnings it makes sense to create a new `encryption-config.yaml` before running this role to update `kube-apiserver`. 394 | - use correct semantic versioning as described in [semver](https://semver.org). Needed for Ansible Galaxy importer as it now insists on using semantic versioning. 395 | - make Ansible linter happy 396 | 397 | ## r5.0.1_v1.12.3 398 | 399 | - update `k8s_release` to `1.12.3` 400 | - kube-apiserver: added `Priority` admission plugin 401 | - kube-scheduler: deprecated group version changed from `componentconfig/v1alpha1` to `kubescheduler.config.k8s.io/v1alpha1` 402 | - kube-controller-manager: replace deprecated `--address` setting with `--bind-address` 403 | 404 | ## r5.0.0_v1.11.3 405 | 406 | - update `k8s_release` to `1.11.3` 407 | 408 | ## r4.0.4_v1.10.8 409 | 410 | - update `k8s_release` to `1.10.8` 411 | 412 | ## r4.0.3_v1.10.4 413 | 414 | - support Ubuntu 18.04 415 | 416 | ## r4.0.2_v1.10.4 417 | 418 | - wait for kube-apiserver on port 8080 no longer needed (fixes [#11](https://github.com/githubixx/ansible-role-kubernetes-controller/issues/11)) 419 | 420 | ## r4.0.0_v1.10.4 421 | 422 | - update `k8s_release` to `1.10.4` 423 | - removed deprecated kube-apiserver parameter `insecure-bind-address` (see: [#59018](https://github.com/kubernetes/kubernetes/pull/59018)) 424 | - added variable `k8s_apiserver_secure_port: 6443` 425 | - added parameter `secure-port` to `k8s_apiserver_settings` parameter list 426 | - added `kube-controller-manager-ca` certificate files to `k8s_certificates` list 427 | - added variable `k8s_controller_manager_conf_dir` / added kubeconfig for kube-controller-manager 428 | - added variable `k8s_scheduler_conf_dir` / added kubeconfig for kube-scheduler / settings for kube-scheduler now in `templates/var/lib/kube-scheduler/kube-scheduler.yaml.j2` 429 | - added kubeconfig for `admin` user (located by default in `k8s_conf_dir`). This `admin.kubeconfig` will be needed for `kubectl` 430 | - new `service-account-key-file` value for kube-apiserver 431 | - changes in `k8s_controller_manager_settings`: removed `master` parameter, added `kubeconfig`, new value for `service-account-private-key-file`, new parameter `use-service-account-credentials` 432 | 433 | ## r3.0.0_v1.9.8 434 | 435 | - update `k8s_release` to `1.9.8` 436 | 437 | ## r3.0.0_v1.9.3 438 | 439 | - update `k8s_release` to `1.9.3` 440 | 441 | ## r3.0.0_v1.9.1 442 | 443 | - move advertise-address,bind-address,insecure-bind-address out of kube-apiserver.service.j2 template 444 | - move address,master settings out of kube-controller-manager.service.j2 template / fix variable bug in `k8s_apiserver_settings` 445 | - move address,master settings out of kube-scheduler.service.j2 template 446 | - fix: use `k8s_etcd` hosts group instead of `k8s_controller` group to generate etcd server list 447 | - we need to wait for kube-apiserver port 8080 to become ready before running kubectl tasks 448 | 449 | ## r2.0.2_v1.9.1 450 | 451 | - update to Kubernetes v1.9.1 452 | 453 | ## r2.0.1_v1.9.0 454 | 455 | - removed duplicate key cluster-signing-cert-file from `k8s_controller_manager_settings` dictionary 456 | 457 | ## r2.0.0_v1.9.0 458 | 459 | - introduce flexible parameter settings for API server via `k8s_apiserver_settings/k8s_apiserver_settings_user` 460 | - introduce flexible parameter settings for controller manager via `k8s_controller_manager_settings/k8s_controller_manager_settings_user` 461 | - introduce flexible parameter settings for kube-scheduler via `k8s_scheduler_settings/k8s_scheduler_settings_user` 462 | - change defaults for `k8s_ca_conf_directory` and `k8s_config_directory` variables 463 | - update to Kubernetes v1.9.0 464 | 465 | No changelog for releases < r2.0.0_v1.9.0 (see commit history if needed) 466 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 599 | 600 | 16. Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | {one line to give the program's name and a brief idea of what it does.} 635 | Copyright (C) {year} {name of author} 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | {project} Copyright (C) {year} {fullname} 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | --------------------------------------------------------------------------------