nginx.yml

name: Nginx

on:
  workflow_dispatch:
  push:
  pull_request:
    branches:
      - main
    paths-ignore:
      - 'site/**'

permissions:
  contents: read

jobs:
  docker:
    name: Docker
    runs-on: ubuntu-20.04
    timeout-minutes: 30
    strategy:
      fail-fast: false
      matrix:
        ipFamily: [ipv4]
        deployment: [singleNode, multiNode]
    env:
      JOB_NAME: "docker-${{ matrix.deployment }}-${{ matrix.ipFamily }}"
      IP_FAMILY: ${{ matrix.ipFamily }}
    steps:
      - name: Check out code into the Go module directory
        uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9 # v3.5.3

      - name: Install kind
        run: sudo make install INSTALL_DIR=/usr/local/bin

      - name: Install kubectl
        run: |
          curl -LO https://dl.k8s.io/release/$(curl -sL https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl
          chmod +x ./kubectl
          sudo mv ./kubectl /usr/local/bin/kubectl

      - name: Enable ipv4 and ipv6 forwarding
        run: |
          sudo sysctl -w net.ipv6.conf.all.forwarding=1
          sudo sysctl -w net.ipv4.ip_forward=1

      - name: Create single node cluster
        if: ${{ matrix.deployment == 'singleNode' }}
        run: |
          cat <<EOF | /usr/local/bin/kind create cluster -v7 --wait 1m --retain --config=-
          kind: Cluster
          apiVersion: kind.x-k8s.io/v1alpha4
          networking:
            ipFamily: ${IP_FAMILY}
          EOF

      - name: Create multi node cluster
        if: ${{ matrix.deployment == 'multiNode' }}
        run: |
          cat <<EOF | /usr/local/bin/kind create cluster -v7 --wait 1m --retain --config=-
          kind: Cluster
          apiVersion: kind.x-k8s.io/v1alpha4
          networking:
            ipFamily: ${IP_FAMILY}
          nodes:
          - role: control-plane
          - role: worker
          - role: worker
          EOF

      - name: Get Cluster status
        run: |
          # wait network is ready
          kubectl wait --for=condition=ready pods --namespace=kube-system -l k8s-app=kube-dns
          kubectl get nodes -o wide
          kubectl get pods -A

      - name: Install Helm
        run: |
          curl -fsSL -o get_helm.sh https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3
          chmod 700 get_helm.sh
          ./get_helm.sh
  
      - name: Install and configure MetalLB
        run: |
          helm repo add metallb https://metallb.github.io/metallb
          helm install metallb metallb/metallb --namespace metallb-system --create-namespace
          kubectl wait --for=condition=Ready pods --all -n metallb-system
          kubectl get pods -A
          docker network inspect -f '{{.IPAM.Config}}' kind
          cat <<EOF | kubectl apply -f -
          apiVersion: metallb.io/v1beta1
          kind: IPAddressPool
          metadata:
            name: first-pool
            namespace: metallb-system
          spec:
            addresses:
            - 172.18.255.200-172.18.255.250
          EOF
          cat <<EOF | kubectl apply -f -
          apiVersion: metallb.io/v1beta1
          kind: L2Advertisement
          metadata:
            name: empty
            namespace: metallb-system
          EOF

      - name: Deploy nginx
        run: |
          kubectl create deployment nginx --image=nginx --replicas=3
          kubectl wait pod --all --for=condition=Ready -n default
          kubectl expose deployment nginx --port=80 --target-port=8000 --name=nginx --type=LoadBalancer
          kubectl get pods
          kubectl get services
          kubectl describe services nginx
          kubectl get services | grep nginx | awk '{ print $4 }'
          curl -m 5 $(kubectl get services | grep nginx | awk '{ print $4 }'):80

      - name: Export logs
        if: always()
        run: |
          mkdir -p /tmp/kind/logs
          /usr/local/bin/kind export logs /tmp/kind/logs
          sudo chown -R $USER:$USER /tmp/kind/logs

      - name: Upload logs
        if: always()
        uses: actions/upload-artifact@0b7f8abb1508181956e8e162db84b466c27e18ce # v3.1.2
        with:
          name: kind-logs-${{ env.JOB_NAME }}-${{ github.run_id }}
          path: /tmp/kind/logs

      - name: Delete cluster
        run: /usr/local/bin/kind delete cluster