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DevOps Workshop

Walkthought environment

  • Run kubectl --namespace argocd get secrets argocd-initial-admin-secret --template={{.data.password}} | base64 --decode command and copy ArgoCD admin password
  • Click on icon Web preview on the top right of Cloud Shell. Click on Change port and put port number 31001 to access to ArgoCD
  • Login with user admin and password from above command
  • You will see 2 application with dev and prd environments running but it won't run. Try to check for status and error.
  • Go to https://github.com/[GITHUBUSER]?tab=repositories to see ncd24-gitops and ncd24-fastapi repositories
  • ncd24-fastapi repository is where your application code and CI/CD here
  • ncd24-gitops repository is GitOps repository for ArgoCD

Check CI/CD on GitHub Actions

  • Go to https://github.com/[GITHUBUSER]/ncd24-fastapi/actions or go to your ncd24-fastapi repository and click on Actions tab
  • You will see workflow feat: first initial is automatically run when first pushing the code and it should finished now.
    • Click on workflow to see workflow jobs
    • setup job is for prepare and setup environment variables
    • build-push job is to build container image and push to GitHub container registry. You can see your container image here https://github.com/[GITHUBUSER]/ncd24-fastapi/pkgs/container/ncd24-fastapi or go to https://github.com/[GITHUBUSER] first and click on Packages tab then ncd24-fastapi package
    • git-commit job is to update and commit newly build container image into helm-values/ncd24-fastapi-dev.yaml in ncd24-gitops repository
  • Go check ncd24-gitops repository. And go check helm-values/ncd24-fastapi-dev.yaml file to see tag is changing
  • Go back to ArgoCD again to see the status of the application in dev environment. It should healthy now.
    • Put curl http://localhost:31002 in Cloud Shell to see return output from fastapi application
    • You can try curl http://localhost:31002/health and curl http://localhost:31002/chain to test other fastapi endpoint

Production deployment

Tagging version

  • Go to https://github.com/[GITHUBUSER]/ncd24-fastapi/actions or go to your ncd24-fastapi repository and click on Actions tab
  • Click on 2. Production tagging workflow
  • Click on Run workflow button on the right and click Run workflow
  • GitHub Actions will run tagging workflow that has only tag-and-release job
    • tag-and-release job is going to copy and tag container image first. You can see tag in https://github.com/[GITHUBUSER]/ncd24-fastapi/pkgs/container/ncd24-fastapi or click on Packages on the main repository page
    • tag-and-release job then is going to create release. You can see from https://github.com/[GITHUBUSER]/ncd24-fastapi/releases or click on Releases on the main repository page

Deploy on production

  • Go to https://github.com/[GITHUBUSER]/ncd24-fastapi/actions or go to your ncd24-fastapi repository and click on Actions tab
  • Click on 3. Production deployment workflow
  • Click on Run workflow button on the right
    • Automatically pick the latest tag version: checked
    • Click Run workflow
  • GitHub Actions will run the following jobs
    • setup job is for prepare and setup environment variables
    • git-commit job is to update and commit newly build container image into helm-values/ncd24-fastapi-prd.yaml in ncd24-gitops repository
  • Go check ncd24-gitops repository. And go check helm-values/ncd24-fastapi-prd.yaml file to see tag is changing
  • Go back to ArgoCD again to see the status of the application in dev environment. It should healthy now.
  • If it is not healthy, you can try click on REFRESH then SYNC button to enforce sync.
    • Put curl http://localhost:31003 in Cloud Shell to see return output from fastapi application
    • You can try curl http://localhost:31003/health and curl http://localhost:31003/chain to test other fastapi endpoint

Update source code

Change hello world message

  • Edit ~/ncd24-fastapi/main.py on @app.get("/") path
    • Change return {"Hello": "World"} to return {"Hello": "World!"}

Commit with Git GUI Editor

  • Click on Source Control icon on the left of Cloud Shell Editor
  • You will see many git repositories
  • Go to Source Control and click on + icon next to your ncd24-fastapi git repository. You will see the file will move to Changes to Staged Changes
    • It will be the same as git add command
  • Put the commit message in ncd24-fastapi git repository and click on Commit or ctrl+enter on Windows or command+enter on MacOS
    • It will be the same as git commit command
  • Click on ... icon next to ncd24-fastapi git repository and click on Push
    • It will be the same as git push command

Check deployment status and deploy to production

  • Go to https://github.com/[GITHUBUSER]/ncd24-fastapi/actions or go to your ncd24-fastapi repository and click on Actions tab
  • You will see new workflow from your committed
    • Click on workflow to see workflow jobs
  • Go check ncd24-gitops repository. And go check helm-values/ncd24-fastapi-dev.yaml file to see tag is changing again
  • Go back to ArgoCD again to see the status of the application in dev environment. If it is not update, you can try click on REFRESH then SYNC button to enforce sync.
    • Put curl http://localhost:31002 in Cloud Shell to see your new return output from fastapi application
  • Try to deploy to production

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