Hello world deployment template

This repository aims to provide a easy to replicate baseline/template for other deployments on the Glaucus K3S infrastructure

How kubernetes files are handled?

Just place all the .yaml files on the .k3s folder all the deployment will execute the updates autmatically.

How code changes are handled?

On every commit a new push to dockerhub is executed, and the pods are rotated automatically.

Variable settings:

Key	Description
KUBECONFIG	K3S kubeconfig settings file encoded in base64
DOCKER_PASSWORD	DockerHub account password
DOCKER_USERNAME	DockerHub account username
DOCKER_IMAGE_TAG	DockerHub image tag (username not included)
K3S_NAMESPACE	K3S namespace to execute updates on
K3S_DEPLOYMENT	K3S deployment name

Secrets management

In order to be super quick, right now the management is being done by GitHub secrets + plain environment variables

In order to use a secret, use a placeholder value in the kubernetes YAML files and update the .github deployment to perform a sed replace.

Example secret:

| Key | Description | | FANCY_SECRET | Secret environment variable to be added at the deployment |

Kubernetes deployment env:

      containers:
        - name: k3sglaucushello
          image: nuriofernandez/k3sglaucushello:latest
          env:
            - name: SECRET
              value: "GITHUB_SECRET_FANCY_SECRET"

GitHub deploy sed:

      - name: Replace GITHUB_SECRET_ variables with actual GitHub Secrets
        run: |
          sed -i -E 's/GITHUB_SECRET_FANCY_SECRET/${{ secrets.FANCY_SECRET }}/g' .k3s/*.yaml

Usage and output:

fmt.Fprintf(w, "K3S on Glaucus! With CI/CD! Fancy! "+os.Getenv("SECRET"))