Technical task for Igor

The goals for this task are the following:

1. Set up a Github actions workflow in the https://github.com/verifa/ArgoCD-task Github repository which builds a new Docker Image and pushes it to GCP Artifact registry europe-north1-docker.pkg.dev/lauri-container-fundamentals/fleuri/testapp .

2. Fill in the kubernetes manifests for a deployment and service in the kubernetes folder for running the testapp on kubernetes.

3. Add instructions / a script / other automation for setting up a local kubernetes environment. Use minikube, kind or similar.

4. Deploy testapp and ArgoCD on the local k8s and have ArgoCD update the deployment when a new change is committed. Test the setup by committing an arbitrary code change to the testapp (for example, you could fix the timezone for get_time() function).

5. Demo your work to us when you are done!

6. Have fun! Don't be afraid to ask for help or clarifications, especially if something doesn't work as I planned.

Authenticating with GCP Artifact Repository

To use the provided registry and the image within it europe-north1-docker.pkg.dev/lauri-container-fundamentals/fleuri/testapp, the user has to authenticate to it using the already created Service Account's (artifact-repo-sa@lauri-container-fundamentals.iam.gserviceaccount.com) keyfile in the repo. Authenticate by running

cat artifact-repo-sa-key64.json | docker login -u _json_key_base64 --password-stdin https://europe-north1-docker.pkg.dev

or

cat artifact-repo-sa-key.json | docker login -u _json_key --password-stdin https://europe-north1-docker.pkg.dev

The Service Account has read and write permissions to the repo. If for some reason after successfully logging in you get an error message like

Error response from daemon: Head "https://europe-north1-docker.pkg.dev/v2/lauri-container-fundamentals/fleuri/testapp/manifests/latest": denied: Permission "artifactregistry.repositories.downloadArtifacts" denied on resource "projects/lauri-container-fundamentals/locations/europe-north1/repositories/fleuri" (or it may not exist)

try clearing your docker config by running rm $HOME/.docker/config.json.

Notes about testapp

Testapp is a simple webapp conjured up with flask. The environment is setup with direnv and it has python3 and pip along with the dependencies installed. If you wish to set your own dev environment, you can install the dependencies with pip install -r requirements.txt.

To run the application locally, you can either run flask run with optional flags or build and run the docker container. To access the application in the browser, run docker inspect <container name> | grep IPAddress. Navigate to http://<ip address>:5000/ .