├── LICENSE ├── README.md ├── README_cn.md ├── install.sh └── uninstall.sh /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. Definitions. 8 | 9 | "License" shall mean the terms and conditions for use, reproduction, 10 | and distribution as defined by Sections 1 through 9 of this document. 11 | 12 | "Licensor" shall mean the copyright owner or entity authorized by 13 | the copyright owner that is granting the License. 14 | 15 | "Legal Entity" shall mean the union of the acting entity and all 16 | other entities that control, are controlled by, or are under common 17 | control with that entity. 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright [yyyy] [name of copyright owner] 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # setup-cri-dockerd 2 | 3 | The project is install/uninstall script of [cri-dockerd](https://github.com/Mirantis/cri-dockerd) 4 | 5 | It is very easy to switch from Docker Shim to CRI Dockerd and back, Pod does not restart 6 | 7 | - [English](https://github.com/klts-io/setup-cri-dockerd/blob/main/README.md) 8 | - [简体中文](https://github.com/klts-io/setup-cri-dockerd/blob/main/README_cn.md) 9 | 10 | ## Requirements 11 | 12 | Kubernetes installed using Kubeadm 13 | 14 | The related parameters are set in `/var/lib/kubelet/kubeadm-flags.env` as follows (`--network-plugin`, `--pod-infra-container-image`) 15 | 16 | ## Switch from Docker Shim to CRI Dockerd 17 | ``` bash 18 | wget -O install.sh https://raw.githubusercontent.com/klts-io/setup-cri-dockerd/main/install.sh 19 | chmod +x ./install.sh && ./install.sh 20 | ``` 21 | 22 | ## Back 23 | ``` bash 24 | wget -O uninstall.sh https://raw.githubusercontent.com/klts-io/setup-cri-dockerd/main/uninstall.sh 25 | chmod +x ./uninstall.sh && ./uninstall.sh 26 | ``` 27 | -------------------------------------------------------------------------------- /README_cn.md: -------------------------------------------------------------------------------- 1 | # setup-cri-dockerd 2 | 3 | 这个项目是 [cri-dockerd](https://github.com/Mirantis/cri-dockerd) 的安装卸载脚本 4 | 5 | 可以非常方便的从 Docker shim 切换到 CRI Dockerd 和回退, Pod 不会重启 6 | 7 | - [English](https://github.com/klts-io/setup-cri-dockerd/blob/main/README.md) 8 | - [简体中文](https://github.com/klts-io/setup-cri-dockerd/blob/main/README_cn.md) 9 | 10 | ## 要求 11 | 12 | 使用 Kubeadm 安装的 Kubernetes 13 | 14 | 相关参数都在 `/var/lib/kubelet/kubeadm-flags.env` 配置 如 (`--network-plugin`, `--pod-infra-container-image`) 15 | 16 | ## 从 Docker Shim 切换到 CRI Dockerd 17 | ``` bash 18 | wget -O install.sh https://raw.githubusercontent.com/klts-io/setup-cri-dockerd/main/install.sh 19 | chmod +x ./install.sh && ./install.sh 20 | ``` 21 | 22 | ## 回退 23 | ``` bash 24 | wget -O uninstall.sh https://raw.githubusercontent.com/klts-io/setup-cri-dockerd/main/uninstall.sh 25 | chmod +x ./uninstall.sh && ./uninstall.sh 26 | ``` 27 | -------------------------------------------------------------------------------- /install.sh: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env bash 2 | 3 | # Copyright 2022 The KTLS Authors. 4 | # 5 | # Licensed under the Apache License, Version 2.0 (the "License"); 6 | # you may not use this file except in compliance with the License. 7 | # You may obtain a copy of the License at 8 | # 9 | # http://www.apache.org/licenses/LICENSE-2.0 10 | # 11 | # Unless required by applicable law or agreed to in writing, software 12 | # distributed under the License is distributed on an "AS IS" BASIS, 13 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 | # See the License for the specific language governing permissions and 15 | # limitations under the License. 16 | 17 | set -o errexit 18 | set -o nounset 19 | set -o pipefail 20 | 21 | ARCH=$(arch) 22 | if [[ "${ARCH}" =~ "x86_64" ]]; then 23 | ARCH="amd64" 24 | elif [[ "${ARCH}" =~ "aarch64" ]]; then 25 | ARCH="arm64" 26 | else 27 | echo "${ARCH} is not supported" 28 | exit 1 29 | fi 30 | 31 | VERSION=${VERSION:-v0.2.0} 32 | FORCE=${FORCE:-n} 33 | 34 | BIN_URL="https://github.com/Mirantis/cri-dockerd/releases/download/${VERSION}/cri-dockerd-${VERSION}-linux-${ARCH}.tar.gz" 35 | CRI_SOCK="unix:///var/run/cri-dockerd.sock" 36 | KUBEADM_FLAGS_ENV="/var/lib/kubelet/kubeadm-flags.env" 37 | 38 | SERVICE_NAME="cri-docker.service" 39 | SERVICE_PATH="/etc/systemd/system/${SERVICE_NAME}" 40 | TAR_NAME="cri-dockerd.tar.gz" 41 | TAR_PATH="${TMPDIR:-/tmp/}/install-cri-dockerd" 42 | BIN_NAME="cri-dockerd" 43 | BIN_PATH="/usr/local/bin" 44 | OLD_FLAGS=$(cat "${KUBEADM_FLAGS_ENV}") 45 | 46 | function check_container_runtime_of_kubelet() { 47 | if [[ "${OLD_FLAGS}" =~ "--container-runtime=remote" ]]; then 48 | echo cat "${KUBEADM_FLAGS_ENV}" 49 | cat "${KUBEADM_FLAGS_ENV}" 50 | echo "The container runtime is already set to remote" 51 | echo "Please check the container runtime of kubelet" 52 | exit 1 53 | fi 54 | } 55 | 56 | function install_cri_dockerd() { 57 | if [[ ! -s "${BIN_PATH}/${BIN_NAME}" ]]; then 58 | echo "Installing cri-dockerd" 59 | if [[ ! -s "${TAR_PATH}/${TAR_NAME}" ]]; then 60 | echo "Downloading binary of cri-dockerd" 61 | mkdir -p "${TAR_PATH}" && wget -O "${TAR_PATH}/${TAR_NAME}" "${BIN_URL}" 62 | fi 63 | tar -xzvf "${TAR_PATH}/${TAR_NAME}" -C "${BIN_PATH}" "${BIN_NAME}" && chmod +x "${BIN_PATH}/${BIN_NAME}" 64 | echo "Binary of cri-dockerd is installed" 65 | else 66 | echo "Binary of cri-dockerd already installed" 67 | fi 68 | 69 | echo "${BIN_PATH}/${BIN_NAME}" --version 70 | "${BIN_PATH}/${BIN_NAME}" --version || { 71 | echo "Failed to install cri-dockerd" 72 | exit 1 73 | } 74 | } 75 | 76 | function start_cri_dockerd() { 77 | source "${KUBEADM_FLAGS_ENV}" 78 | cat <"${SERVICE_PATH}" 79 | [Unit] 80 | Description=CRI Interface for Docker Application Container Engine 81 | Documentation=https://docs.mirantis.com 82 | After=network-online.target firewalld.service docker.service 83 | Wants=network-online.target 84 | 85 | [Service] 86 | Type=notify 87 | ExecStart=/usr/local/bin/cri-dockerd --cri-dockerd-root-directory=/var/lib/dockershim --cni-conf-dir=/etc/cni/net.d --cni-bin-dir=/opt/cni/bin --container-runtime-endpoint ${CRI_SOCK} ${KUBELET_KUBEADM_ARGS} 88 | ExecReload=/bin/kill -s HUP \$MAINPID 89 | TimeoutSec=0 90 | RestartSec=2 91 | Restart=always 92 | 93 | StartLimitBurst=3 94 | 95 | StartLimitInterval=60s 96 | 97 | LimitNOFILE=infinity 98 | LimitNPROC=infinity 99 | LimitCORE=infinity 100 | 101 | TasksMax=infinity 102 | Delegate=yes 103 | KillMode=process 104 | 105 | [Install] 106 | WantedBy=multi-user.target 107 | EOF 108 | 109 | systemctl daemon-reload 110 | systemctl enable "${SERVICE_NAME}" 111 | systemctl restart "${SERVICE_NAME}" 112 | systemctl status --no-pager "${SERVICE_NAME}" || { 113 | echo "Failed to start cri-dockerd" 114 | exit 1 115 | } 116 | 117 | echo "crictl --runtime-endpoint "${CRI_SOCK}" ps" 118 | crictl --runtime-endpoint "${CRI_SOCK}" ps 119 | } 120 | 121 | function configure_kubelet() { 122 | NEW_FLAGS=$(echo "${OLD_FLAGS%\"*} --container-runtime=remote --container-runtime-endpoint=${CRI_SOCK}\"") 123 | 124 | case "${FORCE}" in 125 | [yY][eE][sS] | [yY]) 126 | : # Skip 127 | ;; 128 | *) 129 | 130 | echo "============== The original kubeadm-flags.env ==============" 131 | echo cat "${KUBEADM_FLAGS_ENV}" 132 | cat "${KUBEADM_FLAGS_ENV}" 133 | echo "================ Configure kubelet =========================" 134 | echo "cp ${KUBEADM_FLAGS_ENV} ${KUBEADM_FLAGS_ENV}.bak" 135 | echo "cat < ${KUBEADM_FLAGS_ENV}" 136 | echo "${NEW_FLAGS}" 137 | echo "EOF" 138 | echo "systemctl daemon-reload" 139 | echo "systemctl restart kubelet" 140 | echo "============================================================" 141 | echo "Please double check the configuration of kubelet" 142 | echo "Next will execute the that command" 143 | echo "If you don't need this prompt process, please run:" 144 | echo " FORCE=y $0" 145 | echo "============================================================" 146 | 147 | read -r -p "Are you sure? [y/n] " response 148 | case "$response" in 149 | [yY][eE][sS] | [yY]) 150 | : # Skip 151 | ;; 152 | *) 153 | echo "You no enter 'y', so abort install now" 154 | echo "but the cri-dockerd is installed and running" 155 | echo "if need is uninstall the cri-dockerd please run:" 156 | echo " systemctl stop ${SERVICE_NAME}" 157 | echo " systemctl disable ${SERVICE_NAME}" 158 | echo " rm ${SERVICE_PATH}" 159 | echo " rm ${BIN_PATH}/${BIN_NAME}" 160 | exit 1 161 | ;; 162 | esac 163 | ;; 164 | esac 165 | 166 | cp "${KUBEADM_FLAGS_ENV}" "${KUBEADM_FLAGS_ENV}.bak" 167 | cat <${KUBEADM_FLAGS_ENV} 168 | ${NEW_FLAGS} 169 | EOF 170 | systemctl daemon-reload 171 | systemctl restart kubelet 172 | } 173 | 174 | function main() { 175 | check_container_runtime_of_kubelet 176 | install_cri_dockerd 177 | start_cri_dockerd 178 | configure_kubelet 179 | } 180 | 181 | main 182 | -------------------------------------------------------------------------------- /uninstall.sh: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env bash 2 | 3 | # Copyright 2022 The KTLS Authors. 4 | # 5 | # Licensed under the Apache License, Version 2.0 (the "License"); 6 | # you may not use this file except in compliance with the License. 7 | # You may obtain a copy of the License at 8 | # 9 | # http://www.apache.org/licenses/LICENSE-2.0 10 | # 11 | # Unless required by applicable law or agreed to in writing, software 12 | # distributed under the License is distributed on an "AS IS" BASIS, 13 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 | # See the License for the specific language governing permissions and 15 | # limitations under the License. 16 | 17 | set -o errexit 18 | set -o nounset 19 | set -o pipefail 20 | 21 | KUBEADM_FLAGS_ENV="/var/lib/kubelet/kubeadm-flags.env" 22 | SERVICE_PATH="/etc/systemd/system/cri-docker.service" 23 | 24 | if [[ ! -f "${KUBEADM_FLAGS_ENV}.bak" ]]; then 25 | echo "Backing up ${KUBEADM_FLAGS_ENV} is not found" 26 | echo 1 27 | fi 28 | 29 | if [[ ! -f "${SERVICE_PATH}" ]]; then 30 | echo "Service ${SERVICE_PATH} is not found" 31 | echo 1 32 | fi 33 | 34 | function back_configure_kubelet() { 35 | echo "Restoring ${KUBEADM_FLAGS_ENV}" 36 | cp "${KUBEADM_FLAGS_ENV}.bak" "${KUBEADM_FLAGS_ENV}" 37 | systemctl daemon-reload 38 | systemctl restart kubelet 39 | } 40 | 41 | function uninstall_cri_dockerd() { 42 | echo "Uninstalling cri-dockerd" 43 | systemctl disable cri-docker.service 44 | systemctl stop cri-docker.service 45 | rm -f "${SERVICE_PATH}" 46 | } 47 | 48 | function main() { 49 | back_configure_kubelet 50 | uninstall_cri_dockerd 51 | } 52 | 53 | main 54 | --------------------------------------------------------------------------------