├── .gitattributes ├── .github └── workflows │ └── super-linter.yml ├── .gitignore ├── LICENSE.md ├── README.md ├── assets ├── defaultNetwork.xml ├── k8s-install.sh ├── meta-data ├── user-data └── vmTemplate.xml ├── go.mod ├── go.sum ├── image-assets └── image-prep.sh ├── main.go └── pkg ├── cli └── cli.go ├── embedfiles └── util.go ├── libvirtconn └── util.go └── virtualmachine ├── util.go ├── vmAssets.go └── vmXml.go /.gitattributes: -------------------------------------------------------------------------------- 1 | *.qcow2 filter=lfs diff=lfs merge=lfs -text 2 | -------------------------------------------------------------------------------- /.github/workflows/super-linter.yml: -------------------------------------------------------------------------------- 1 | # This workflow executes several linters on changed files based on languages used in your code base whenever 2 | # you push a code or open a pull request. 3 | # 4 | # You can adjust the behavior by modifying this file. 5 | # For more information, see: 6 | # https://github.com/github/super-linter 7 | name: Lint Code Base 8 | 9 | on: 10 | push: 11 | branches-ignore: [ test ] 12 | pull_request: 13 | branches: [ "main" ] 14 | jobs: 15 | run-lint: 16 | runs-on: ubuntu-latest 17 | steps: 18 | - name: Checkout code 19 | uses: actions/checkout@v3 20 | with: 21 | # Full git history is needed to get a proper list of changed files within `super-linter` 22 | fetch-depth: 0 23 | 24 | - name: Lint Code Base 25 | uses: github/super-linter@v4 26 | env: 27 | VALIDATE_ALL_CODEBASE: true 28 | FILTER_REGEX_EXCLUDE: ".*md" 29 | DEFAULT_BRANCH: "main" 30 | GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} 31 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | *.iso 2 | pkg/embedfiles/assets 3 | mykube 4 | main -------------------------------------------------------------------------------- /LICENSE.md: -------------------------------------------------------------------------------- 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 | 635 | Copyright (C) 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 | Copyright (C) 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 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | ![MyKube Logo](https://user-images.githubusercontent.com/100173467/202854244-a0b4d1c7-27a5-45f0-a2cb-b93615993c11.png) 2 | 3 | 4 | 5 | 6 | 7 | # k8s-installer - One-click k8s single-node cluster installation on your own device. 8 | 9 |
10 | 11 | 12 | 13 |
14 | MyKube is a new easy-to-use open source tool for creating your own virtual machine with k8s installed only by one click. 15 | 16 | All the dependencies are included, which means there are **no** previous steps that need to be taken. 17 | 18 | ### How to Use 19 | 20 | ##### Prerequisites 21 | Install `Libvirt` 22 | For RPM OS: 23 | ``` 24 | $ sudo yum install qemu-kvm libvirt python3-libvirt libvirt-client bridge-utils 25 | ``` 26 | For DEB OS: 27 | ``` 28 | $ sudo apt install qemu-kvm libvirt-daemon-system libvirt-clients bridge-utils 29 | ``` 30 | 31 | Run the next commands for deploying k8s single-node cluster installation: 32 | 33 | 1. Go to _MyKube_ [releases](https://github.com/guyst16/mykube/releases/tag/v0.0.1-alpha) 34 | 2. Download & install the desired release package 35 | 3. Run the next command for creating the cluster: 36 | ``` 37 | $ sudo mykube create --domain 38 | ``` 39 | ![image](https://github.com/guyst16/mykube/assets/100173467/4ac2ebb4-ce5b-4305-bab1-c659abebfc5d) 40 | 41 | And you done. 42 | 43 | ### Need some help? 44 | 45 | Ask for help: 46 | ``` 47 | $ mykube --help 48 | ``` 49 | 50 | ### Destroy vm 51 | 52 | Run the next command: 53 | 54 | ``` 55 | $ sudo mykube delete --domain 56 | ``` 57 | 58 | ### Get connection details 59 | 60 | Run the command: 61 | 62 | ``` 63 | $ sudo mykube connect --domain 64 | ``` 65 | 66 | ## How to build? 67 | 1. Run git clone: 68 | ``` 69 | $ git clone https://github.com/guyst16/mykube.git 70 | $ cd mykube 71 | ``` 72 | 2. Run go generate: 73 | ``` 74 | $ go generate pkg/embedfiles/util.go 75 | ``` 76 | 3. Build: 77 | ``` 78 | $ go build 79 | ``` 80 | Done! Now you have a `mykube` binary file. 81 | 82 | ## So how does it work? 83 | The Mykube procedure for creating new working K8S cluster is very simple, here are the steps: 84 | 1. Necessary directories for mykube are getting created. 85 | 1. A customized OS image downloaded for the virtual machine which the k8s will run above it (if not already downloaded). 86 | 2. A new virtual machine get deployed using cloud-init for automatic k8s installation. 87 | 3. Done! 88 | 89 | #### (Compatibility) OS: 90 | 91 | - ✔️ ![Linux](https://img.shields.io/badge/Linux-FCC624?style=for-the-badge&logo=linux&logoColor=black) 92 | 93 | - ⏲️ ![Mac OS](https://img.shields.io/badge/mac%20os-000000?style=for-the-badge&logo=apple&logoColor=white) 94 | 95 | - ⏲️ ![Windows](https://img.shields.io/badge/Windows-0078D6?style=for-the-badge&logo=windows&logoColor=white) 96 | 97 | 98 | 99 | 100 | 101 | ## Feel free to open issues and suggestions 102 | 103 | -------------------------------------------------------------------------------- /assets/defaultNetwork.xml: -------------------------------------------------------------------------------- 1 | 2 | mykubevms 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | -------------------------------------------------------------------------------- /assets/k8s-install.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | 3 | #Install K8S cluster 4 | until sudo kubeadm init --pod-network-cidr=10.244.0.0/16 5 | do 6 | echo "Error while pulling images, try again..." 7 | done; 8 | 9 | until sudo kubectl --kubeconfig=/etc/kubernetes/admin.conf taint node mykube node-role.kubernetes.io/control-plane-; 10 | do 11 | echo "Try untaint node..." 12 | sleep 1 13 | done; 14 | 15 | until sudo kubectl --kubeconfig=/etc/kubernetes/admin.conf apply -f https://github.com/flannel-io/flannel/releases/latest/download/kube-flannel.yml; 16 | do 17 | echo "Try install flannel..." 18 | sleep 1 19 | done; 20 | 21 | until sudo kubectl --kubeconfig=/etc/kubernetes/admin.conf apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v2.7.0/aio/deploy/recommended.yaml; 22 | do 23 | echo "Try install K8S console..." 24 | sleep 1 25 | done; 26 | 27 | until [ -f /opt/cni/bin/flannel ]; 28 | do 29 | echo "Waiting for flannel bin creation..."; 30 | sleep 1; 31 | done 32 | sudo cp /opt/cni/bin/* /usr/libexec/cni/ 33 | sudo cp /usr/libexec/cni/* /opt/cni/bin/ 34 | 35 | sudo kubectl --kubeconfig=/etc/kubernetes/admin.conf patch svc kubernetes-dashboard -n kubernetes-dashboard --type='merge' -p '{"spec":{"type":"NodePort"}}' 36 | sudo kubectl --kubeconfig=/etc/kubernetes/admin.conf patch svc kubernetes-dashboard -n kubernetes-dashboard --type='json' -p='[{"op": "replace", "path": "/spec/ports/0/nodePort", "value": 31000}]' 37 | -------------------------------------------------------------------------------- /assets/meta-data: -------------------------------------------------------------------------------- 1 | instance-id: mykube 2 | local-hostname: mykube -------------------------------------------------------------------------------- /assets/user-data: -------------------------------------------------------------------------------- 1 | #cloud-config 2 | 3 | users: 4 | - name: sumit 5 | ssh_authorized_keys: 6 | - ssh-rsa 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 guy@guy-laptop 7 | sudo: ALL=(ALL) NOPASSWD:ALL 8 | groups: sudo 9 | shell: /bin/bash 10 | 11 | write_files: 12 | - encoding: base64 13 | content: | 14 | IyEvYmluL2Jhc2gKCiNJbnN0YWxsIEs4UyBjbHVzdGVyCnVudGlsIHN1ZG8ga3ViZWFkbSBpbml0 15 | IC0tcG9kLW5ldHdvcmstY2lkcj0xMC4yNDQuMC4wLzE2CmRvCiAgICBlY2hvICJFcnJvciB3aGls 16 | ZSBwdWxsaW5nIGltYWdlcywgdHJ5IGFnYWluLi4uIiAKZG9uZTsKCnVudGlsIHN1ZG8ga3ViZWN0 17 | bCAtLWt1YmVjb25maWc9L2V0Yy9rdWJlcm5ldGVzL2FkbWluLmNvbmYgdGFpbnQgbm9kZSBteWt1 18 | YmUgbm9kZS1yb2xlLmt1YmVybmV0ZXMuaW8vY29udHJvbC1wbGFuZS07CmRvCiAgICBlY2hvICJU 19 | cnkgdW50YWludCBub2RlLi4uIgogICAgc2xlZXAgMQpkb25lOwogCnVudGlsIHN1ZG8ga3ViZWN0 20 | bCAtLWt1YmVjb25maWc9L2V0Yy9rdWJlcm5ldGVzL2FkbWluLmNvbmYgYXBwbHkgLWYgaHR0cHM6 21 | Ly9naXRodWIuY29tL2ZsYW5uZWwtaW8vZmxhbm5lbC9yZWxlYXNlcy9sYXRlc3QvZG93bmxvYWQv 22 | a3ViZS1mbGFubmVsLnltbDsKZG8KICAgIGVjaG8gIlRyeSBpbnN0YWxsIGZsYW5uZWwuLi4iCiAg 23 | ICBzbGVlcCAxCmRvbmU7CiAKdW50aWwgc3VkbyBrdWJlY3RsIC0ta3ViZWNvbmZpZz0vZXRjL2t1 24 | YmVybmV0ZXMvYWRtaW4uY29uZiBhcHBseSAtZiBodHRwczovL3Jhdy5naXRodWJ1c2VyY29udGVu 25 | dC5jb20va3ViZXJuZXRlcy9kYXNoYm9hcmQvdjIuNy4wL2Fpby9kZXBsb3kvcmVjb21tZW5kZWQu 26 | eWFtbDsKZG8KICAgIGVjaG8gIlRyeSBpbnN0YWxsIEs4UyBjb25zb2xlLi4uIgogICAgc2xlZXAg 27 | MQpkb25lOwogCnVudGlsIFsgLWYgL29wdC9jbmkvYmluL2ZsYW5uZWwgXTsKZG8gCiAgICBlY2hv 28 | ICJXYWl0aW5nIGZvciBmbGFubmVsIGJpbiBjcmVhdGlvbi4uLiI7CiAgICBzbGVlcCAxOwpkb25l 29 | CnN1ZG8gY3AgL29wdC9jbmkvYmluLyogL3Vzci9saWJleGVjL2NuaS8Kc3VkbyBjcCAvdXNyL2xp 30 | YmV4ZWMvY25pLyogL29wdC9jbmkvYmluLwogCnN1ZG8ga3ViZWN0bCAtLWt1YmVjb25maWc9L2V0 31 | Yy9rdWJlcm5ldGVzL2FkbWluLmNvbmYgcGF0Y2ggc3ZjIGt1YmVybmV0ZXMtZGFzaGJvYXJkIC1u 32 | IGt1YmVybmV0ZXMtZGFzaGJvYXJkIC0tdHlwZT0nbWVyZ2UnIC1wICd7InNwZWMiOnsidHlwZSI6 33 | Ik5vZGVQb3J0In19JwpzdWRvIGt1YmVjdGwgLS1rdWJlY29uZmlnPS9ldGMva3ViZXJuZXRlcy9h 34 | ZG1pbi5jb25mIHBhdGNoIHN2YyBrdWJlcm5ldGVzLWRhc2hib2FyZCAtbiBrdWJlcm5ldGVzLWRh 35 | c2hib2FyZCAtLXR5cGU9J2pzb24nIC1wPSdbeyJvcCI6ICJyZXBsYWNlIiwgInBhdGgiOiAiL3Nw 36 | ZWMvcG9ydHMvMC9ub2RlUG9ydCIsICJ2YWx1ZSI6IDMxMDAwfV0nCg== 37 | path: /mnt/k8s-install.sh 38 | permissions: "0777" 39 | 40 | runcmd: 41 | - sudo /mnt/k8s-install.sh -------------------------------------------------------------------------------- /assets/vmTemplate.xml: -------------------------------------------------------------------------------- 1 | 2 | test 3 | 2097152 4 | 2097152 5 | 2 6 | 7 | hvm 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | -------------------------------------------------------------------------------- /go.mod: -------------------------------------------------------------------------------- 1 | module github.com/guyst16/mykube 2 | 3 | go 1.20 4 | 5 | require ( 6 | github.com/cheggaaa/pb v1.0.29 7 | github.com/digitalocean/go-libvirt v0.0.0-20221205150000-2939327a8519 8 | github.com/dustin/go-humanize v1.0.1 9 | github.com/kdomanski/iso9660 v0.4.0 10 | github.com/pkg/sftp v1.13.6 11 | golang.org/x/crypto v0.1.0 12 | gopkg.in/yaml.v3 v3.0.1 13 | ) 14 | 15 | require ( 16 | github.com/kr/fs v0.1.0 // indirect 17 | github.com/mattn/go-runewidth v0.0.4 // indirect 18 | golang.org/x/sys v0.1.0 // indirect 19 | ) 20 | 21 | require ( 22 | github.com/cpuguy83/go-md2man/v2 v2.0.2 // indirect 23 | github.com/russross/blackfriday/v2 v2.1.0 // indirect 24 | github.com/urfave/cli/v2 v2.25.7 25 | github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 // indirect 26 | ) 27 | -------------------------------------------------------------------------------- /go.sum: -------------------------------------------------------------------------------- 1 | github.com/cheggaaa/pb v1.0.29 h1:FckUN5ngEk2LpvuG0fw1GEFx6LtyY2pWI/Z2QgCnEYo= 2 | github.com/cheggaaa/pb v1.0.29/go.mod h1:W40334L7FMC5JKWldsTWbdGjLo0RxUKK73K+TuPxX30= 3 | github.com/cpuguy83/go-md2man/v2 v2.0.2 h1:p1EgwI/C7NhT0JmVkwCD2ZBK8j4aeHQX2pMHHBfMQ6w= 4 | github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o= 5 | github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= 6 | github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= 7 | github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= 8 | github.com/digitalocean/go-libvirt v0.0.0-20221205150000-2939327a8519 h1:OpkN/n40cmKenDQS+IOAeW9DLhYy4DADSeZnouCEV/E= 9 | github.com/digitalocean/go-libvirt v0.0.0-20221205150000-2939327a8519/go.mod h1:WyJJyfmJ0gWJvjV+ZH4DOgtOYZc1KOvYyBXWCLKxsUU= 10 | github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY= 11 | github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto= 12 | github.com/fatih/color v1.9.0 h1:8xPHl4/q1VyqGIPif1F+1V3Y3lSmrq01EabUW3CoW5s= 13 | github.com/fatih/color v1.9.0/go.mod h1:eQcE1qtQxscV5RaZvpXrrb8Drkc3/DdQ+uUYCNjL+zU= 14 | github.com/kdomanski/iso9660 v0.4.0 h1:BPKKdcINz3m0MdjIMwS0wx1nofsOjxOq8TOr45WGHFg= 15 | github.com/kdomanski/iso9660 v0.4.0/go.mod h1:OxUSupHsO9ceI8lBLPJKWBTphLemjrCQY8LPXM7qSzU= 16 | github.com/kr/fs v0.1.0 h1:Jskdu9ieNAYnjxsi0LbQp1ulIKZV1LAFgK1tWhpZgl8= 17 | github.com/kr/fs v0.1.0/go.mod h1:FFnZGqtBN9Gxj7eW1uZ42v5BccTP0vu6NEaFoC2HwRg= 18 | github.com/mattn/go-colorable v0.1.4 h1:snbPLB8fVfU9iwbbo30TPtbLRzwWu6aJS6Xh4eaaviA= 19 | github.com/mattn/go-colorable v0.1.4/go.mod h1:U0ppj6V5qS13XJ6of8GYAs25YV2eR4EVcfRqFIhoBtE= 20 | github.com/mattn/go-isatty v0.0.8/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hdxcsrc5s= 21 | github.com/mattn/go-isatty v0.0.11 h1:FxPOTFNqGkuDUGi3H/qkUbQO4ZiBa2brKq5r0l8TGeM= 22 | github.com/mattn/go-isatty v0.0.11/go.mod h1:PhnuNfih5lzO57/f3n+odYbM4JtupLOxQOAqxQCu2WE= 23 | github.com/mattn/go-runewidth v0.0.4 h1:2BvfKmzob6Bmd4YsL0zygOqfdFnK7GR4QL06Do4/p7Y= 24 | github.com/mattn/go-runewidth v0.0.4/go.mod h1:LwmH8dsx7+W8Uxz3IHJYH5QSwggIsqBzpuz5H//U1FU= 25 | github.com/pkg/sftp v1.13.6 h1:JFZT4XbOU7l77xGSpOdW+pwIMqP044IyjXX6FGyEKFo= 26 | github.com/pkg/sftp v1.13.6/go.mod h1:tz1ryNURKu77RL+GuCzmoJYxQczL3wLNNpPWagdg4Qk= 27 | github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= 28 | github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= 29 | github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf35Ld67mk= 30 | github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM= 31 | github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME= 32 | github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw= 33 | github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo= 34 | github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg= 35 | github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU= 36 | github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4= 37 | github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk= 38 | github.com/urfave/cli/v2 v2.25.7 h1:VAzn5oq403l5pHjc4OhD54+XGO9cdKVL/7lDjF+iKUs= 39 | github.com/urfave/cli/v2 v2.25.7/go.mod h1:8qnjx1vcq5s2/wpsqoZFndg2CE5tNFyrTvS6SinrnYQ= 40 | github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 h1:bAn7/zixMGCfxrRTfdpNzjtPYqr8smhKouy9mxVdGPU= 41 | github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673/go.mod h1:N3UwUGtsrSj3ccvlPHLoLsHnpR27oXr4ZE984MbSER8= 42 | github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY= 43 | golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= 44 | golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc= 45 | golang.org/x/crypto v0.1.0 h1:MDRAIl0xIo9Io2xV565hzXHw3zVseKrJKodhohM5CjU= 46 | golang.org/x/crypto v0.1.0/go.mod h1:RecgLatLF4+eUMCP1PoPZQb+cVrJcOPbHkTkbkB9sbw= 47 | golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4= 48 | golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s= 49 | golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg= 50 | golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c= 51 | golang.org/x/net v0.1.0/go.mod h1:Cx3nUiGt4eDBEyega/BKRp+/AlGL8hYe7U9odMt2Cco= 52 | golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= 53 | golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= 54 | golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= 55 | golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= 56 | golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 57 | golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 58 | golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= 59 | golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= 60 | golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= 61 | golang.org/x/sys v0.1.0 h1:kunALQeHf1/185U1i0GOB/fy1IPRDDpuoOOqRReG57U= 62 | golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= 63 | golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo= 64 | golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8= 65 | golang.org/x/term v0.1.0 h1:g6Z6vPFA9dYBAF7DWcH6sCcOntplXsDKcliusYijMlw= 66 | golang.org/x/term v0.1.0/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8= 67 | golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= 68 | golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ= 69 | golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ= 70 | golang.org/x/text v0.4.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8= 71 | golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= 72 | golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo= 73 | golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc= 74 | golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= 75 | gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM= 76 | gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= 77 | gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= 78 | gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= 79 | gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= 80 | -------------------------------------------------------------------------------- /image-assets/image-prep.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | 3 | # Set SELinux in permissive mode (effectively disabling it) 4 | sudo setenforce 0 5 | sudo sed -i 's/^SELINUX=enforcing$/SELINUX=permissive/' /etc/selinux/config 6 | 7 | # This overwrites any existing configuration in /etc/yum.repos.d/kubernetes.repo 8 | cat < /etc/containerd/config.toml" 38 | sudo sed -i 's/SystemdCgroup = false/SystemdCgroup = true/' /etc/containerd/config.toml 39 | 40 | #Install docker engine 41 | sudo dnf -y install dnf-plugins-core 42 | sudo dnf config-manager --add-repo https://download.docker.com/linux/fedora/docker-ce.repo 43 | sudo dnf install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin 44 | sudo systemctl enable docker 45 | 46 | ################################################################################################# 47 | # TODO: Document about virt-customize the base image # 48 | # virt-customize --run /home/guy/Projects/mykube/image-assets/image-prep.sh -a Base-image.qcow2 # 49 | ################################################################################################# -------------------------------------------------------------------------------- /main.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import "github.com/guyst16/mykube/pkg/cli" 4 | 5 | func main() { 6 | cli.Cli() 7 | } 8 | -------------------------------------------------------------------------------- /pkg/cli/cli.go: -------------------------------------------------------------------------------- 1 | package cli 2 | 3 | import ( 4 | "crypto/sha256" 5 | "encoding/hex" 6 | "errors" 7 | "fmt" 8 | "io" 9 | "log" 10 | "net/http" 11 | "os" 12 | "strconv" 13 | "strings" 14 | "time" 15 | 16 | "github.com/cheggaaa/pb" 17 | "github.com/digitalocean/go-libvirt" 18 | "github.com/dustin/go-humanize" 19 | "github.com/guyst16/mykube/pkg/embedfiles" 20 | "github.com/guyst16/mykube/pkg/virtualmachine" 21 | "github.com/kdomanski/iso9660" 22 | "github.com/urfave/cli/v2" 23 | "golang.org/x/crypto/ssh" 24 | ) 25 | 26 | // Directories 27 | var ASSETS_MYKUBE_DIR = ".mykube" 28 | var ASSETS_MYKUBE_VM_DIR = "" 29 | var LIBVIRT_MYKUBE_DIR = "/var/lib/libvirt/images/mykube" 30 | var LIBVIRT_MYKUBE_UTIL_DIR = LIBVIRT_MYKUBE_DIR + "/" + "util" 31 | var DIRECTORIES_UTIL = [3]string{} 32 | 33 | // Utils 34 | // TODO: REPLACE BASE IMAGE URL AND EXTRACT TAR FILE 35 | // var LIBVIRT_MYKUBE_UTIL_BASE_IMAGE_URL = "https://github.com/guyst16/mykube/raw/Feat/Refactor_Golang/image-assets/Base-image.qcow2?download=" 36 | var LIBVIRT_MYKUBE_UTIL_BASE_IMAGE_URL = "https://drive.google.com/uc?export=download&confirm=t&id=1x727Dbkze9gAXH_E6m-UfQddhIuFt-63" 37 | var LIBVIRT_MYKUBE_UTIL_BASE_IMAGE_PATH = LIBVIRT_MYKUBE_UTIL_DIR + "/" + "Base-image.qcow2" 38 | var LIBVIRT_MYKUBE_VM_DIR = "" 39 | var LIBVIRT_MYKUBE_VM_BASE_IMAGE_PATH = "" 40 | var LIBVIRT_MYKUBE_VM_CLOUDCONFIG_PATH = "" 41 | var LIBVIRT_MYKUBE_VM_METADATA_PATH = "" 42 | var LIBVIRT_MYKUBE_UTIL_CLOUDCONFIG_ISO_PATH = LIBVIRT_MYKUBE_UTIL_DIR + "/" + "cidata.iso" 43 | 44 | // Validate 45 | var OS_IMAGE_SHA256SUM = "cafd46df34c9dacb981391e339e00ae582bdcd5d42441bd2708ab54cc5ee856e" 46 | var QEMU_GID = 107 47 | var QEMU_UID = 107 48 | 49 | // TODO: Handle all err inside the helpers functions 50 | func Cli() { 51 | var vmName string 52 | 53 | app := &cli.App{ 54 | Name: "mykube", 55 | Usage: "Manage single node K8S", 56 | Compiled: time.Now(), 57 | Authors: []*cli.Author{ 58 | { 59 | Name: "Guy Steinberger", 60 | Email: "guyst16@gmail.com", 61 | }, 62 | }, 63 | Commands: []*cli.Command{ 64 | { 65 | Name: "create", 66 | Usage: "Create a single node K8S", 67 | Flags: []cli.Flag{ 68 | &cli.StringFlag{ 69 | Name: "domain", 70 | Usage: "Name of the K8S cluster", 71 | Required: true, 72 | Destination: &vmName, 73 | }, 74 | }, 75 | Action: func(ctx *cli.Context) error { 76 | // Validate vm doesn't already exist 77 | _, err := GetVM(vmName) 78 | if err == nil { 79 | log.Fatalf("Virtual machine named %q already exists", vmName) 80 | } 81 | 82 | // Get home directory 83 | userHomeDir, err := os.UserHomeDir() 84 | if err != nil { 85 | log.Fatal(err) 86 | } 87 | 88 | ASSETS_MYKUBE_DIR_LOCAL := userHomeDir + "/" + ASSETS_MYKUBE_DIR 89 | DIRECTORIES_UTIL = [...]string{ASSETS_MYKUBE_DIR_LOCAL, LIBVIRT_MYKUBE_DIR, LIBVIRT_MYKUBE_UTIL_DIR} 90 | 91 | // Validate directories existence 92 | for _, dir := range DIRECTORIES_UTIL { 93 | _, dir_err := os.Stat(dir) 94 | if os.IsNotExist(dir_err) { 95 | err := os.Mkdir(dir, 0777) 96 | if err != nil { 97 | log.Fatal(err) 98 | } 99 | } 100 | } 101 | 102 | err = os.Chown(LIBVIRT_MYKUBE_DIR, QEMU_UID, QEMU_GID) 103 | if err != nil { 104 | log.Fatal(err) 105 | } 106 | 107 | err = ValidateOSImage(LIBVIRT_MYKUBE_UTIL_BASE_IMAGE_PATH, OS_IMAGE_SHA256SUM) 108 | if err != nil { 109 | // Download cloud base image 110 | log.Println("Download OS image (Base-image.qcow2) to /var/lib/libvirt/mykube/util directory") 111 | log.Println("This file being downloaded ONLY once - your next virtual machine creations will be faster!") 112 | DownloadFile(LIBVIRT_MYKUBE_UTIL_BASE_IMAGE_PATH, LIBVIRT_MYKUBE_UTIL_BASE_IMAGE_URL) 113 | } 114 | 115 | // Create Libvirt vm directory, assets vm directory and copy image 116 | ASSETS_MYKUBE_VM_DIR = ASSETS_MYKUBE_DIR_LOCAL + "/" + vmName 117 | LIBVIRT_MYKUBE_VM_DIR = LIBVIRT_MYKUBE_DIR + "/" + vmName 118 | LIBVIRT_MYKUBE_VM_CLOUDCONFIG_PATH = LIBVIRT_MYKUBE_VM_DIR + "/" + "user-data" 119 | LIBVIRT_MYKUBE_VM_METADATA_PATH = LIBVIRT_MYKUBE_VM_DIR + "/" + "meta-data" 120 | LIBVIRT_MYKUBE_VM_BASE_IMAGE_PATH = LIBVIRT_MYKUBE_VM_DIR + "/" + "Base-image.qcow2" 121 | err = os.Mkdir(LIBVIRT_MYKUBE_VM_DIR, 0777) 122 | if err != nil { 123 | log.Fatal(err) 124 | } 125 | err = os.Chown(LIBVIRT_MYKUBE_VM_DIR, QEMU_UID, QEMU_GID) 126 | if err != nil { 127 | log.Fatal(err) 128 | } 129 | err = CopyFile(LIBVIRT_MYKUBE_UTIL_BASE_IMAGE_PATH, LIBVIRT_MYKUBE_VM_BASE_IMAGE_PATH) 130 | if err != nil { 131 | log.Fatal(err) 132 | } 133 | err = os.Mkdir(ASSETS_MYKUBE_VM_DIR, 0744) 134 | if err != nil { 135 | log.Fatal(err) 136 | } 137 | 138 | // Generate ssh key pair inside vm directory 139 | err = virtualmachine.CreateVirtualmachineSSHKeyPair(ASSETS_MYKUBE_VM_DIR) 140 | if err != nil { 141 | log.Fatal(err) 142 | } 143 | 144 | // Create meta-data files and iso 145 | cloudConfigContent, _ := embedfiles.InnerReadFile("assets/user-data") 146 | metaDataContent, _ := embedfiles.InnerReadFile("assets/meta-data") 147 | 148 | vmPubKey, err := os.ReadFile(ASSETS_MYKUBE_VM_DIR + "/public_key.pem") 149 | if err != nil { 150 | log.Fatal(err) 151 | } 152 | 153 | cloudConfigContent = virtualmachine.InjectSSHKeyIntoUserDataYamlFile(cloudConfigContent, string(vmPubKey)) 154 | 155 | err = os.WriteFile(LIBVIRT_MYKUBE_VM_CLOUDCONFIG_PATH, cloudConfigContent, 0644) 156 | if err != nil { 157 | return err 158 | } 159 | 160 | err = os.WriteFile(LIBVIRT_MYKUBE_VM_METADATA_PATH, metaDataContent, 0644) 161 | if err != nil { 162 | return err 163 | } 164 | 165 | // Create cloud config ISO in VM directory 166 | cloudConfigFilesArr := []string{LIBVIRT_MYKUBE_VM_CLOUDCONFIG_PATH, LIBVIRT_MYKUBE_VM_METADATA_PATH} 167 | LIBVIRT_MYKUBE_VM_CLOUDCONFIG_ISO_PATH := LIBVIRT_MYKUBE_VM_DIR + "/" + strings.Split(LIBVIRT_MYKUBE_UTIL_CLOUDCONFIG_ISO_PATH, "/")[len(strings.Split(LIBVIRT_MYKUBE_UTIL_CLOUDCONFIG_ISO_PATH, "/"))-1] 168 | CreateISO(cloudConfigFilesArr, LIBVIRT_MYKUBE_VM_CLOUDCONFIG_ISO_PATH) 169 | 170 | // Create mykube virtual machine 171 | myVM := virtualmachine.NewVirtualmachine("os", LIBVIRT_MYKUBE_VM_BASE_IMAGE_PATH, LIBVIRT_MYKUBE_VM_CLOUDCONFIG_ISO_PATH, 1, 1, vmName) 172 | myVM.CreateVirtualmachine() 173 | 174 | // Start mykube virtual machine 175 | virtualmachine.StartVirtualMachine(vmName) 176 | 177 | log.Println("K8S virtual machine created") 178 | log.Println("Wait for the cluster to get created, could take 5-10 minutes...") 179 | 180 | // Wait for vm get ip 181 | vmIP := "" 182 | for vmIP == "" { 183 | vmIP, _ = virtualmachine.GetVirtualMachineIP(vmName) 184 | } 185 | 186 | log.Println("Wait for a connection") 187 | ConStatusMSG := 0 188 | 189 | var sshConnection *ssh.Client 190 | for { 191 | sshConnection, err = virtualmachine.GetVirtualMachineSSHConnection(vmName, ASSETS_MYKUBE_VM_DIR+"/private_key.pem") 192 | if err != nil { 193 | time.Sleep(2 * time.Second) 194 | continue 195 | } else { 196 | if ConStatusMSG == 0 { 197 | log.Println("Connection established") 198 | ConStatusMSG = 1 199 | } 200 | sess, err := sshConnection.NewSession() 201 | if err != nil { 202 | log.Fatalln("new session errored", err) 203 | } 204 | defer sess.Close() 205 | 206 | if ConStatusMSG == 1 { 207 | log.Println("Wait for cluster to get ready, could take a couple of minutes...") 208 | ConStatusMSG = 2 209 | } 210 | 211 | // running this command to get the sftp-server path, as it can vary from system to system 212 | newFilePath := "/tmp/admin.conf" 213 | _, err = sess.Output("sudo cp /etc/kubernetes/admin.conf " + newFilePath + " && sudo chmod 777 " + newFilePath) 214 | if err != nil { 215 | time.Sleep(10 * time.Second) 216 | continue 217 | } 218 | err = virtualmachine.CopyFileFromVirtualMachineToHost(sshConnection, newFilePath, ASSETS_MYKUBE_VM_DIR+"/kube.conf") 219 | if err != nil { 220 | log.Print("no kube conf") 221 | log.Print(err) 222 | time.Sleep(10 * time.Second) 223 | continue 224 | } 225 | break 226 | } 227 | } 228 | 229 | fmt.Println("Done!") 230 | fmt.Println("\nThe console pods will be up in 2-3 minutes") 231 | virtualmachine.GetConnectionDetails(vmName, ASSETS_MYKUBE_DIR) 232 | fmt.Println("Visit repo here: https://github.com/guyst16/mykube") 233 | 234 | return nil 235 | }, 236 | }, 237 | { 238 | Name: "delete", 239 | Usage: "delete a single node K8S", 240 | Flags: []cli.Flag{ 241 | &cli.StringFlag{ 242 | Name: "domain", 243 | Usage: "Name of the K8S cluster", 244 | Required: true, 245 | Destination: &vmName, 246 | }, 247 | }, 248 | Action: func(ctx *cli.Context) error { 249 | err := virtualmachine.DeleteVirtualMachine(vmName) 250 | if err != nil { 251 | log.Print(err.Error()) 252 | } 253 | 254 | LIBVIRT_MYKUBE_VM_DIR = LIBVIRT_MYKUBE_DIR + "/" + vmName 255 | // Get home directory 256 | userHomeDir, err := os.UserHomeDir() 257 | if err != nil { 258 | log.Fatal(err) 259 | } 260 | ASSETS_MYKUBE_DIR_LOCAL := userHomeDir + "/" + ASSETS_MYKUBE_DIR 261 | ASSETS_MYKUBE_VM_DIR = ASSETS_MYKUBE_DIR_LOCAL + "/" + vmName 262 | os.RemoveAll(LIBVIRT_MYKUBE_VM_DIR) 263 | os.RemoveAll(ASSETS_MYKUBE_VM_DIR) 264 | 265 | return nil 266 | }, 267 | }, 268 | { 269 | Name: "connect", 270 | Usage: "connect a single node K8S", 271 | Flags: []cli.Flag{ 272 | &cli.StringFlag{ 273 | Name: "domain", 274 | Usage: "Name of the K8S cluster", 275 | Required: true, 276 | Destination: &vmName, 277 | }, 278 | }, 279 | Action: func(ctx *cli.Context) error { 280 | err := virtualmachine.GetConnectionDetails(vmName, ASSETS_MYKUBE_DIR) 281 | if err != nil { 282 | log.Fatal("vm is not up and running") 283 | } 284 | return nil 285 | }, 286 | }, 287 | { 288 | Name: "list", 289 | Usage: "list all single nodes K8S", 290 | Action: func(ctx *cli.Context) error { 291 | virtualmachine.ListAllVirtualmachines() 292 | return nil 293 | }, 294 | }, 295 | }, 296 | } 297 | 298 | if err := app.Run(os.Args); err != nil { 299 | log.Fatal(err) 300 | } 301 | } 302 | 303 | // Progress bar type and functions 304 | type WriteCounter struct { 305 | Total uint64 306 | } 307 | 308 | func (wc *WriteCounter) Write(p []byte) (int, error) { 309 | n := len(p) 310 | wc.Total += uint64(n) 311 | wc.PrintProgress() 312 | return n, nil 313 | } 314 | 315 | func (wc WriteCounter) PrintProgress() { 316 | // Clear the line by using a character return to go back to the start and remove 317 | // the remaining characters by filling it with spaces 318 | fmt.Printf("\r%s", strings.Repeat(" ", 35)) 319 | 320 | // Return again and print current status of download 321 | // We use the humanize package to print the bytes in a meaningful way (e.g. 10 MB) 322 | fmt.Printf("\rDownloading... %s complete", humanize.Bytes(wc.Total)) 323 | } 324 | 325 | // Download files to specific destination 326 | func DownloadFile(filepath string, url string) (err error) { 327 | 328 | // Create the file 329 | out, err := os.Create(filepath) 330 | if err != nil { 331 | return err 332 | } 333 | defer out.Close() 334 | 335 | // Get the data 336 | resp, err := http.Get(url) 337 | if err != nil { 338 | return err 339 | } 340 | defer resp.Body.Close() 341 | 342 | // Get file size 343 | i, _ := strconv.Atoi(resp.Header.Get("Content-Length")) 344 | fileSize := int64(i) 345 | 346 | // create bar 347 | bar := pb.New(int(fileSize)).SetUnits(pb.U_BYTES).SetRefreshRate(time.Millisecond * 10) 348 | bar.ShowSpeed = true 349 | bar.Start() 350 | 351 | // create proxy reader 352 | reader := bar.NewProxyReader(resp.Body) 353 | 354 | // and copy from reader 355 | io.Copy(out, reader) 356 | bar.Finish() 357 | 358 | // Check server response 359 | if resp.StatusCode != http.StatusOK { 360 | return fmt.Errorf("bad status: %s", resp.Status) 361 | } 362 | 363 | // Writer the body to file 364 | _, err = io.Copy(out, resp.Body) 365 | if err != nil { 366 | return err 367 | } 368 | 369 | return nil 370 | } 371 | 372 | func CopyFile(src string, dest string) (err error) { 373 | bytesRead, err := os.ReadFile(src) 374 | 375 | if err != nil { 376 | return err 377 | } 378 | 379 | err = os.WriteFile(dest, bytesRead, 0644) 380 | 381 | if err != nil { 382 | return err 383 | } 384 | 385 | return err 386 | } 387 | 388 | // Create new cidata ISO file 389 | func CreateISO(filesListFullPath []string, outputISOPath string) { 390 | writer, err := iso9660.NewWriter() 391 | if err != nil { 392 | log.Fatalf("failed to create writer: %s", err) 393 | } 394 | defer writer.Cleanup() 395 | 396 | for _, element := range filesListFullPath { 397 | f, err := os.Open(element) 398 | if err != nil { 399 | log.Fatalf("failed to open file: %s", err) 400 | } 401 | defer f.Close() 402 | 403 | err = writer.AddFile(f, strings.Split(element, "/")[len(strings.Split(element, "/"))-1]) 404 | if err != nil { 405 | log.Fatalf("failed to add file: %s", err) 406 | } 407 | } 408 | 409 | outputFile, err := os.OpenFile(outputISOPath, os.O_WRONLY|os.O_TRUNC|os.O_CREATE, 0644) 410 | if err != nil { 411 | log.Fatalf("failed to create file: %s", err) 412 | } 413 | 414 | err = writer.WriteTo(outputFile, "cidata") 415 | if err != nil { 416 | log.Fatalf("failed to write ISO image: %s", err) 417 | } 418 | 419 | err = outputFile.Close() 420 | if err != nil { 421 | log.Fatalf("failed to close output file: %s", err) 422 | } 423 | } 424 | 425 | // Validate the given image file, else return an error 426 | func ValidateOSImage(filePath string, validSHA256sum string) (err error) { 427 | if _, err := os.Stat(filePath); errors.Is(err, os.ErrNotExist) { 428 | return err 429 | } 430 | 431 | f, err := os.Open(filePath) 432 | if err != nil { 433 | log.Fatal(err) 434 | } 435 | defer f.Close() 436 | 437 | h := sha256.New() 438 | if _, err := io.Copy(h, f); err != nil { 439 | log.Fatal(err) 440 | } 441 | 442 | imageSum := h.Sum(nil) 443 | 444 | if hex.EncodeToString(imageSum) != validSHA256sum { 445 | return errors.New("SHA256sum is not equal") 446 | } 447 | 448 | return nil 449 | } 450 | 451 | // Return vm details 452 | func GetVM(vmName string) (vm *libvirt.Domain, err error) { 453 | vm = virtualmachine.GetVirtualMachine(vmName) 454 | if vm.Name == "" { 455 | return nil, errors.New("virtual machine does not exist") 456 | } 457 | 458 | return vm, nil 459 | } 460 | -------------------------------------------------------------------------------- /pkg/embedfiles/util.go: -------------------------------------------------------------------------------- 1 | package embedfiles 2 | 3 | import ( 4 | "embed" 5 | ) 6 | 7 | //go:generate rm -rf ./assets 8 | //go:generate cp -r ../../assets ./assets 9 | //go:embed assets/* 10 | var assets embed.FS 11 | 12 | func InnerReadFile(filename string) ([]byte, error) { 13 | return assets.ReadFile(filename) 14 | } 15 | -------------------------------------------------------------------------------- /pkg/libvirtconn/util.go: -------------------------------------------------------------------------------- 1 | package libvirtconn 2 | 3 | import ( 4 | "log" 5 | 6 | "github.com/digitalocean/go-libvirt" 7 | "github.com/digitalocean/go-libvirt/socket/dialers" 8 | ) 9 | 10 | func ConnectLibvirtLocal() *libvirt.Libvirt { 11 | // Connect to Libvirt unix domain socket 12 | localSocket := dialers.NewLocal() 13 | libvirtconn := libvirt.NewWithDialer(localSocket) 14 | err := libvirtconn.Connect() 15 | if err != nil { 16 | log.Fatalf("Failed to dial libvirt socket: %v", err) 17 | } 18 | 19 | return libvirtconn 20 | } 21 | -------------------------------------------------------------------------------- /pkg/virtualmachine/util.go: -------------------------------------------------------------------------------- 1 | package virtualmachine 2 | 3 | import ( 4 | "errors" 5 | "fmt" 6 | "io" 7 | "log" 8 | "os" 9 | 10 | "github.com/digitalocean/go-libvirt" 11 | "github.com/guyst16/mykube/pkg/libvirtconn" 12 | "github.com/pkg/sftp" 13 | "golang.org/x/crypto/ssh" 14 | ) 15 | 16 | type Virtualmachine struct { 17 | os_name string 18 | os_path string 19 | cloudconfig_path string 20 | vcpu_amount int 21 | memory_amount int 22 | name string 23 | } 24 | 25 | var STATES = map[libvirt.ConnectListAllDomainsFlags]string{libvirt.ConnectListDomainsRunning: "Running", libvirt.ConnectListDomainsPaused: "Paused", libvirt.ConnectListDomainsShutoff: "Shutoff"} 26 | 27 | // Create virtual machine object 28 | func NewVirtualmachine(os_name string, os_path string, cloudconfig_path string, vcpu_amount int, memory_amount int, name string) *Virtualmachine { 29 | v := Virtualmachine{os_name: os_name, os_path: os_path, cloudconfig_path: cloudconfig_path, vcpu_amount: vcpu_amount, memory_amount: memory_amount, name: name} 30 | return &v 31 | } 32 | 33 | func GetVirtualMachine(vmName string) (dom *libvirt.Domain) { 34 | libvirtconn := libvirtconn.ConnectLibvirtLocal() 35 | vm, _ := libvirtconn.DomainLookupByName(vmName) 36 | return &vm 37 | } 38 | 39 | func ListAllVirtualmachines() { 40 | println("ID\tNAME\t\tUUID\t\t\t\t\tSTATE") 41 | println("-----------------------------------------------------------------------") 42 | libvirtconn := libvirtconn.ConnectLibvirtLocal() 43 | for state := range STATES { 44 | flags := state 45 | domains, _, _ := libvirtconn.ConnectListAllDomains(1, flags) 46 | for _, vm := range domains { 47 | fmt.Printf("%d\t%s\t%x\t%s\n", vm.ID, vm.Name, vm.UUID, STATES[state]) 48 | } 49 | } 50 | } 51 | 52 | func (vm Virtualmachine) CreateVirtualmachine() { 53 | vmXML := ModifyXML("assets/vmTemplate.xml", vm.name, vm.os_path, vm.cloudconfig_path) 54 | libvirtconn := libvirtconn.ConnectLibvirtLocal() 55 | vmXMLString := string(vmXML) 56 | _, err := libvirtconn.DomainDefineXML(vmXMLString) 57 | if err != nil { 58 | log.Fatal(err) 59 | } 60 | } 61 | 62 | // Start defined vm 63 | func StartVirtualMachine(vmName string) { 64 | libvirtconn := libvirtconn.ConnectLibvirtLocal() 65 | domain := GetVirtualMachine(vmName) 66 | if domain == nil { 67 | log.Fatal("Virtual machine not defined") 68 | } 69 | err := libvirtconn.DomainCreate(*domain) 70 | if err != nil { 71 | log.Fatal(err) 72 | } 73 | } 74 | 75 | // Delete defined vm 76 | func DeleteVirtualMachine(vmName string) (err error) { 77 | libvirtconn := libvirtconn.ConnectLibvirtLocal() 78 | domain := GetVirtualMachine(vmName) 79 | if domain == nil { 80 | return errors.New("vm undefined") 81 | } 82 | err = libvirtconn.DomainUndefine(*domain) 83 | if err != nil { 84 | return err 85 | } 86 | err = libvirtconn.DomainDestroy(*domain) 87 | if err != nil { 88 | return err 89 | } 90 | 91 | return nil 92 | } 93 | 94 | // Get virtual machine public IP 95 | func GetVirtualMachineIP(vmName string) (vmIPAddress string, err error) { 96 | libvirtconn := libvirtconn.ConnectLibvirtLocal() 97 | domain := GetVirtualMachine(vmName) 98 | domainIPAddress := "" 99 | if domain == nil { 100 | return domainIPAddress, errors.New("virtual machine not defined") 101 | } 102 | 103 | // Get list of the domain interfaces addresses 104 | intrefacesList, err := libvirtconn.DomainInterfaceAddresses(*domain, 0, 0) 105 | if err != nil { 106 | return domainIPAddress, err 107 | } 108 | 109 | if len(intrefacesList) == 0 { 110 | return domainIPAddress, errors.New("domain " + vmName + " doesn't have an IP address") 111 | } 112 | 113 | return intrefacesList[0].Addrs[0].Addr, nil 114 | } 115 | 116 | // Copy file from vm to host 117 | func CopyFileFromVirtualMachineToHost(sshClient *ssh.Client, remoteFilePath string, localFilePath string) (err error) { 118 | defer sshClient.Close() 119 | 120 | // Open an SFTP session on the remote machine 121 | sftpClient, err := sftp.NewClient(sshClient) 122 | if err != nil { 123 | fmt.Println("Failed to create SFTP client:", err) 124 | return 125 | } 126 | defer sftpClient.Close() 127 | 128 | // Check if the file exists 129 | _, err = sftpClient.Stat("/etc/kubernetes/admin.conf") 130 | if err != nil { 131 | return err 132 | } 133 | 134 | // Copy file to local 135 | // File exists, open the remote file 136 | remoteFile, err := sftpClient.Open(remoteFilePath) 137 | if err != nil { 138 | fmt.Println("Error opening remote file:", err) 139 | return 140 | } 141 | defer remoteFile.Close() 142 | 143 | // Create a local file to copy the contents to 144 | localFile, err := os.Create(localFilePath) 145 | if err != nil { 146 | fmt.Println("Error creating local file:", err) 147 | return 148 | } 149 | defer localFile.Close() 150 | 151 | // Copy the contents of the remote file to the local file 152 | _, err = io.Copy(localFile, remoteFile) 153 | if err != nil { 154 | fmt.Println("Error copying file:", err) 155 | return 156 | } 157 | 158 | return nil 159 | } 160 | 161 | // Get ssh client for a virtaul machine 162 | func GetVirtualMachineSSHConnection(vmName string, vmPubKeyPath string) (shhClient *ssh.Client, err error) { 163 | privateKey, err := LoadPrivateKeyFromFile(vmPubKeyPath) 164 | if err != nil { 165 | return nil, err 166 | } 167 | 168 | config := &ssh.ClientConfig{ 169 | User: "sumit", 170 | Auth: []ssh.AuthMethod{ 171 | ssh.PublicKeys(privateKey), 172 | }, 173 | HostKeyCallback: ssh.InsecureIgnoreHostKey(), 174 | } 175 | 176 | vmIP, err := GetVirtualMachineIP(vmName) 177 | if err != nil { 178 | return nil, err 179 | } 180 | 181 | sshClient, err := ssh.Dial("tcp", fmt.Sprintf("%s:%d", vmIP, 22), config) 182 | if err != nil { 183 | return nil, err 184 | } 185 | 186 | return sshClient, nil 187 | } 188 | 189 | func LoadPrivateKeyFromFile(filePath string) (ssh.Signer, error) { 190 | // Read the contents of the file 191 | fileContent, err := os.ReadFile(filePath) 192 | if err != nil { 193 | return nil, err 194 | } 195 | 196 | key, err := ssh.ParsePrivateKey(fileContent) 197 | if err != nil { 198 | return nil, err 199 | } 200 | 201 | return key, nil 202 | } 203 | 204 | // Print cluster connection details 205 | func GetConnectionDetails(vmName string, mykubeAssetsDir string) (err error) { 206 | // Validate virtual machine has an IP 207 | vmIP, err := GetVirtualMachineIP(vmName) 208 | if err != nil { 209 | return err 210 | } 211 | 212 | // Get home directory 213 | userHomeDir, err := os.UserHomeDir() 214 | if err != nil { 215 | log.Fatal(err) 216 | } 217 | ASSETS_MYKUBE_DIR := userHomeDir + "/" + mykubeAssetsDir 218 | ASSETS_MYKUBE_VM_DIR := ASSETS_MYKUBE_DIR + "/" + vmName 219 | 220 | fmt.Println("Virtual machine is up and running") 221 | fmt.Println("To connect the cluster please run:\n$ export KUBECONFIG=" + ASSETS_MYKUBE_VM_DIR + "/kube.conf") 222 | fmt.Println("Or use the console:\nhttps://" + vmIP + ":31000") 223 | fmt.Println("\nLogin to console by creating new cluster-admin token:") 224 | fmt.Println("$ kubectl create serviceaccount mykube-admin --namespace default") 225 | fmt.Println("$ kubectl create clusterrolebinding --clusterrole=cluster-admin --serviceaccount default:mykube-admin mykube-admin-rb") 226 | fmt.Println("$ kubectl create token mykube-admin --namespace default") 227 | fmt.Println("\nCopy token and paste in console") 228 | 229 | return nil 230 | } 231 | -------------------------------------------------------------------------------- /pkg/virtualmachine/vmAssets.go: -------------------------------------------------------------------------------- 1 | package virtualmachine 2 | 3 | import ( 4 | "crypto/rand" 5 | "crypto/rsa" 6 | "crypto/x509" 7 | "encoding/pem" 8 | "log" 9 | "os" 10 | "strings" 11 | 12 | "golang.org/x/crypto/ssh" 13 | "gopkg.in/yaml.v3" 14 | ) 15 | 16 | type User struct { 17 | Name string `yaml:"name"` 18 | SSHAuthorizedKeys []string `yaml:"ssh_authorized_keys"` 19 | Sudo string `yaml:"sudo"` 20 | Groups string `yaml:"groups"` 21 | Shell string `yaml:"shell"` 22 | } 23 | 24 | type CloudConfig struct { 25 | Users []User `yaml:"users"` 26 | WriteFiles []struct { 27 | Encoding string `yaml:"encoding"` 28 | Content string `yaml:"content"` 29 | Path string `yaml:"path"` 30 | Permission string `yaml:"permissions"` 31 | } `yaml:"write_files"` 32 | RunCmd []string `yaml:"runcmd"` 33 | } 34 | 35 | // Create ssh key for a virtual machine 36 | func CreateVirtualmachineSSHKeyPair(outputKeyPath string) (err error) { 37 | // Generate RSA key. 38 | key, err := rsa.GenerateKey(rand.Reader, 2048) 39 | if err != nil { 40 | return err 41 | } 42 | 43 | // Extract public component. 44 | // pub := key.Public() 45 | 46 | // Encode private key to PKCS#1 ASN.1 PEM. 47 | keyPEM := pem.EncodeToMemory( 48 | &pem.Block{ 49 | Type: "RSA PRIVATE KEY", 50 | Bytes: x509.MarshalPKCS1PrivateKey(key), 51 | }, 52 | ) 53 | 54 | sshPubKey, err := ssh.NewPublicKey(&key.PublicKey) 55 | if err != nil { 56 | return err 57 | } 58 | 59 | pubKeyBytes := ssh.MarshalAuthorizedKey(sshPubKey) 60 | 61 | err = writeKeyToFile(keyPEM, outputKeyPath+"/private_key.pem") 62 | if err != nil { 63 | return err 64 | } 65 | 66 | err = writeKeyToFile(pubKeyBytes, outputKeyPath+"/public_key.pem") 67 | if err != nil { 68 | return err 69 | } 70 | 71 | return nil 72 | } 73 | 74 | // writePemToFile writes keys to a file 75 | func writeKeyToFile(keyBytes []byte, saveFileTo string) error { 76 | err := os.WriteFile(saveFileTo, keyBytes, 0600) 77 | if err != nil { 78 | return err 79 | } 80 | 81 | return nil 82 | } 83 | 84 | func InjectSSHKeyIntoUserDataYamlFile(userDataYamlFile []byte, sshPubKey string) (newUserDataYamlFile []byte) { 85 | // Unmarshal YAML data into a struct 86 | var config CloudConfig 87 | err := yaml.Unmarshal(userDataYamlFile, &config) 88 | if err != nil { 89 | log.Fatalf("Error unmarshalling YAML: %v", err) 90 | } 91 | 92 | // Add a new SSH key to the first user's "ssh_authorized_keys" array 93 | config.Users[0].SSHAuthorizedKeys = append(config.Users[0].SSHAuthorizedKeys, strings.Replace(sshPubKey, "\n", "", -1)) 94 | 95 | // Marshal the modified struct back to YAML 96 | modifiedYAML, err := yaml.Marshal(&config) 97 | if err != nil { 98 | log.Fatalf("Error marshalling YAML: %v", err) 99 | } 100 | 101 | // Add #cloud-config at the start 102 | cloudConfigLine := []byte("#cloud-config\n\n") 103 | modifiedYAML = append(cloudConfigLine, modifiedYAML...) 104 | 105 | return modifiedYAML 106 | 107 | } 108 | -------------------------------------------------------------------------------- /pkg/virtualmachine/vmXml.go: -------------------------------------------------------------------------------- 1 | package virtualmachine 2 | 3 | import ( 4 | "encoding/xml" 5 | "log" 6 | "strings" 7 | 8 | "github.com/guyst16/mykube/pkg/embedfiles" 9 | ) 10 | 11 | type rawXML struct { 12 | Inner []byte `xml:",innerxml"` 13 | Attrs []xml.Attr `xml:",any,attr"` 14 | } 15 | 16 | type diskSubTag struct { 17 | Attrs []xml.Attr `xml:",any,attr"` 18 | } 19 | 20 | type source struct { 21 | File string `xml:"file,attr"` 22 | } 23 | 24 | type disk struct { 25 | Type string `xml:"type,attr"` 26 | Device string `xml:"device,attr"` 27 | Driver diskSubTag `xml:"driver"` 28 | Source source `xml:"source"` 29 | Target diskSubTag `xml:"target"` 30 | } 31 | 32 | type devices struct { 33 | Emulator rawXML `xml:"emulator"` 34 | Disk []disk `xml:"disk"` 35 | Interface rawXML `xml:"interface"` 36 | Serial rawXML `xml:"serial"` 37 | Console rawXML `xml:"console"` 38 | Channel rawXML `xml:"channel"` 39 | Graphics rawXML `xml:"graphics"` 40 | } 41 | 42 | type domain struct { 43 | Type string `xml:"type,attr"` 44 | Name string `xml:"name"` 45 | Memory rawXML `xml:"memory"` 46 | Vcpu rawXML `xml:"vcpu"` 47 | OS rawXML `xml:"os"` 48 | Features rawXML `xml:"features"` 49 | Cpu rawXML `xml:"cpu"` 50 | Clock rawXML `xml:"clock"` 51 | On_poweroff rawXML `xml:"on_poweroff"` 52 | On_reboot rawXML `xml:"on_reboot"` 53 | On_crash rawXML `xml:"on_crash"` 54 | PM rawXML `xml:"pm"` 55 | Devices devices `xml:"devices"` 56 | } 57 | 58 | func ModifyXML(assetFilePath string, vmName string, vmBaseImagePath string, vmCloudConfigIsoPath string) (output []byte) { 59 | data, err := embedfiles.InnerReadFile(assetFilePath) 60 | if err != nil { 61 | log.Fatal(err) 62 | } 63 | 64 | var domain domain 65 | if err := xml.Unmarshal(data, &domain); err != nil { 66 | log.Fatal(err) 67 | } 68 | 69 | // Modify vm values 70 | // Modify vm name 71 | domain.Name = vmName 72 | 73 | // Modify OS disk path and cloud config disk path 74 | for i := 0; i < len(domain.Devices.Disk); i++ { 75 | if strings.Contains(domain.Devices.Disk[i].Source.File, "Fedora") { 76 | domain.Devices.Disk[i].Source.File = vmBaseImagePath 77 | } else if strings.Contains(domain.Devices.Disk[i].Source.File, "cidata") { 78 | domain.Devices.Disk[i].Source.File = vmCloudConfigIsoPath 79 | } 80 | } 81 | 82 | modified, err := xml.MarshalIndent(&domain, "", " ") 83 | if err != nil { 84 | log.Fatal(err) 85 | } 86 | 87 | return modified 88 | } 89 | --------------------------------------------------------------------------------