public-cloud-k8s-versions-check.yml

# Retrieves a list of supported image versions for the cloud providers and
# creates a PR to update each relative JSON file:
# - Kind (Kubernetes in Docker): kind_versions.json
# - GKE (Google Kubernetes Engine): gke_versions.json
# - AKS (Azure Kubernetes Service): aks_versions.json
# - EKS (Amazon Elastic Kubernetes Service): eks_versions.json

name: public-cloud-k8s-versions-check
on:
  schedule:
    - cron: "30 0 * * *"
  workflow_dispatch:
    inputs:
      limit:
        description: 'Limit to the specified engines list (eks, aks, gke, kind)'
        required: false

permissions:
  contents: write
  pull-requests: write
  issues: read

defaults:
  run:
    shell: 'bash -Eeuo pipefail -x {0}'

env:
  # The minimal k8s version supported, k8s version smaller than this one will be removed from vendor
  MINIMAL_K8S: "1.23"

jobs:

  check-public-clouds-k8s-versions:
    runs-on: ubuntu-22.04
    steps:
      -
        name: Checkout code
        uses: actions/checkout@v4
      -
        # There is no command to get EKS k8s versions, we have to parse the documentation
        name: Get updated EKS versions
        run: |
          DOC_URL="https://raw.githubusercontent.com/awsdocs/amazon-eks-user-guide/master/doc_source/kubernetes-versions.md" #wokeignore:rule=master
          curl --silent "${DOC_URL}" | grep -E '^\+ `[0-9]\.[0-9]{2}`$' | sed -e 's/[\ +`]//g' | \
            awk -vv=$MINIMAL_K8S '$0>=v {print $0}' | \
            jq -Rn '[inputs]' | tee .github/eks_versions.json
        if: github.event.inputs.limit == null || github.event.inputs.limit == 'eks'
      -
        name: Azure Login
        uses: azure/login@v1.6.1
        with:
          creds: ${{ secrets.AZURE_CREDENTIALS }}
        if: github.event.inputs.limit == null || github.event.inputs.limit == 'aks'
      -
        name: Get updated AKS versions
        run: |
          az aks get-versions --location westeurope  \
            --query 'reverse(sort(values[? isPreview != `true`].patchVersions.keys(@)[]))' -o tsv | \
            sort -urk 1,1.5 | \
            awk -vv=$MINIMAL_K8S '$0>=v {print $0}' | \
            jq -Rn '[inputs]' | tee .github/aks_versions.json
        if: github.event.inputs.limit == null || github.event.inputs.limit == 'aks'
      -
        name: 'Auth GKE'
        uses: 'google-github-actions/auth@v2'
        with:
          credentials_json: '${{ secrets.GCP_SERVICE_ACCOUNT }}'
        if: github.event.inputs.limit == null || github.event.inputs.limit == 'gke'
      -
        name: Set up Cloud SDK for GKE
        uses: google-github-actions/setup-gcloud@v2
        with:
          project_id: ${{ secrets.GCP_PROJECT_ID }}
        if: github.event.inputs.limit == null || github.event.inputs.limit == 'gke'
      -
        name: Install YQ
        uses: frenck/action-setup-yq@v1
        if: github.event.inputs.limit == null || github.event.inputs.limit == 'gke'
      -
        name: Get updated GKE versions
        run: |
          # Get the valid major versions from all the channels, convert them
          # to json and write them to file.
          YQEXPR=".validMasterVersions" #wokeignore:rule=master
          gcloud container get-server-config --zone europe-west3-a --quiet | \
            yq e ${YQEXPR} - | \
            cut -d'.' -f '1-2' | \
            uniq | \
            sed 's/\([[:digit:]]\+\.[[:digit:]]\+\)/"\1"/' | \
            yq '.[] | select( . >= strenv(MINIMAL_K8S) )' | \
            jq -Rn '[inputs]' | tee .github/gke_versions.json
        if: github.event.inputs.limit == null || github.event.inputs.limit == 'gke'
      -
        name: Get updated kind node version
        run : |
          # Get the latest valid kind node version, convert them to json
          # and write them to a file, starting from the MINIMAL_K8S
          for baseversion in $(seq $MINIMAL_K8S 0.01 99); do
            URL="https://registry.hub.docker.com/v2/repositories/kindest/node/tags?name=${baseversion}&ordering=last_updated"
            v=$(curl -SsL "${URL}" | jq -rc '.results[].name' | sort -Vr | head -n1)
            if [[ -z "${v}" ]] || [[ "${v}" =~ "alpha" ]]; then
               break
            fi
            echo "${v}"
          done | jq -Rs 'split("\n") | map(select(length>0)) | sort | reverse' | tee .github/kind_versions.json
        if: github.event.inputs.limit == null || github.event.inputs.limit == 'kind'
      -
        name: Create Pull Request if versions have been updated
        uses: peter-evans/create-pull-request@v6
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          title: "feat: Public Cloud K8S versions update"
          body: "Update the versions used to test the operator on public cloud providers"
          branch: "k8s-cloud-versions-update"
          author: "public-cloud-k8s-versions-check <public-cloud-k8s-versions-check@users.noreply.github.com>"
          add-paths: ".github/"
          commit-message: "feat: Updated public cloud k8s tested versions"
          signoff: true