Add HA Server test (#491)

          docker stop server-node && docker rm -f server-node

          docker stop agent-node && docker rm -f agent-node

          docker network rm k3s-ansible

  test-ha:

    runs-on: ubuntu-latest

    # K3s requires privileged containers to run inside Docker and access to cgrougs.

    env:

      SERVERS: server-node1 server-node2 server-node3

    steps:

      - name: Checkout codebase

        uses: actions/checkout@v6

      - name: Set up Python 3.13.

        uses: actions/setup-python@v4

        with:

          python-version: '3.13.x'

      - name: Install Ansible and dependencies

        run: |

          pip install ansible

          ansible-galaxy collection install -r collections/requirements.yml

      - name: Verify Inventory

        run: ansible-inventory -i tests/ha.yml --list

      - name: Create Docker Network

        run: docker network create k3s-ha-ansible

      - name: Start Docker containers

        run: |

          for SERVER in $SERVERS; do

            docker run -d --name $SERVER \

              --privileged \

              --volume=/sys/fs/cgroup:/sys/fs/cgroup:rw \

              --volume=/lib/modules:/lib/modules:ro \

              --cgroupns=host \

              --network=k3s-ha-ansible \

              geerlingguy/docker-debian12-ansible:latest

          done

      - name: Run Playbook

        env:

          ANSIBLE_FORCE_COLOR: '1'

        run: ansible-playbook playbooks/site.yml -i tests/ha.yml

      - name: Verify K3s is running on servers

        run: docker exec server-node1 k3s kubectl get nodes | grep Ready | wc -l | grep 3

      - name: Modify the k3s_version in inventory for upgrade

        run: |

          sed -i 's/k3s_version: v1.33.4+k3s1/k3s_version: v1.34.1+k3s1/' tests/ha.yml

      - name: Run Upgrade Playbook

        run: ansible-playbook playbooks/upgrade.yml -i tests/ha.yml

      - name: Verify K3s upgraded on all servers

        run: |

          sleep 5 && docker exec server-node1 k3s kubectl get nodes

          for SERVER in $SERVERS; do

            docker exec $SERVER k3s --version | grep v1.34.

          done

      - name: Remove K3s from server nodes

        run: ansible-playbook playbooks/reset.yml -i tests/ha.yml

      - name: Stop and remove Docker containers

        run: |

          for SERVER in $SERVERS; do

            docker stop $SERVER && docker rm -f $SERVER

          done

          docker network rm k3s-ha-ansible

 No newline at end of file

---

k3s_cluster:

  children:

    server:

      hosts:

        server-node1:

        server-node2:

        server-node3:

  vars:

    ansible_connection: docker

    ansible_user: root

    ansible_become: true

    k3s_version: v1.33.4+k3s1

    token: "secretha"

    api_endpoint: "server-node1"

    extra_server_args: "--snapshotter=native"