improve check mode support, allow for agent config yaml, restart service if config changed (#388)

  ignore_errors: true

- name: Set k3s installed version

  when: k3s_version_output.rc == 0

  when: not ansible_check_mode and k3s_version_output.rc == 0

  ansible.builtin.set_fact:

    installed_k3s_version: "{{ k3s_version_output.stdout_lines[0].split(' ')[2] }}"

#   - we couldn't get k3s installed version in the first task of this role

#   - the installed version of K3s on the nodes is older than the requested version in ansible vars

- name: Download artifact only if needed

  when: airgap_dir is undefined and ( k3s_version_output.rc != 0 or installed_k3s_version is version(k3s_version, '<') )

  when: not ansible_check_mode and airgap_dir is undefined and ( k3s_version_output.rc != 0 or installed_k3s_version is version(k3s_version, '<') )

  block:

    - name: Download K3s install script

      ansible.builtin.get_url:

        INSTALL_K3S_EXEC: "agent"

      changed_when: true

- name: Setup optional config file

  when: agent_config_yaml is defined

  block:

    - name: Make config directory

      ansible.builtin.file:

        path: "/etc/rancher/k3s"

        mode: "0755"

        state: directory

    - name: Copy config values

      ansible.builtin.copy:

        content: "{{ agent_config_yaml }}"

        dest: "/etc/rancher/k3s/config.yaml"

        mode: "0644"

      register: _agent_config_result

- name: Get the token from the first server

  ansible.builtin.set_fact:

    token: "{{ hostvars[groups[server_group][0]].token }}"

  ansible.builtin.systemd:

    name: k3s-agent

    daemon_reload: "{{ true if k3s_agent_service.changed else false }}"

    state: "{{ 'restarted' if k3s_agent_service.changed else 'started' }}"

    state: "{{ 'restarted' if (k3s_agent_service.changed or _agent_config_result.changed) else 'started' }}"

    enabled: true

  ignore_errors: true

- name: Set k3s installed version

  when: k3s_version_output.rc == 0

  when: not ansible_check_mode and k3s_version_output.rc == 0

  ansible.builtin.set_fact:

    installed_k3s_version: "{{ k3s_version_output.stdout_lines[0].split(' ')[2] }}"

#   - we couldn't get k3s installed version in the first task of this role

#   - the installed version of K3s on the nodes is older than the requested version in ansible vars

- name: Download artifact only if needed

  when: airgap_dir is undefined and ( k3s_version_output.rc != 0 or installed_k3s_version is version(k3s_version, '<') )

  when: not ansible_check_mode and airgap_dir is undefined and ( k3s_version_output.rc != 0 or installed_k3s_version is version(k3s_version, '<') )

  block:

    - name: Download K3s install script

      ansible.builtin.get_url:

        content: "{{ server_config_yaml }}"

        dest: "/etc/rancher/k3s/config.yaml"

        mode: "0644"

      register: _server_config_result

- name: Init first server node

  when: inventory_hostname == groups[server_group][0]

      when:

        - ansible_facts.services['k3s.service'] is defined

        - ansible_facts.services['k3s.service'].state == 'running'

        - service_file_single.changed or service_file_ha.changed

        - service_file_single.changed or service_file_ha.changed or _server_config_result.changed

      ansible.builtin.systemd:

        name: k3s

        daemon_reload: true

      when:

        - ansible_facts.services['k3s.service'] is defined

        - ansible_facts.services['k3s.service'].state == 'running'

        - service_file_ha.changed or service_file_external_db.changed

        - service_file_ha.changed or service_file_external_db.changed or _server_config_result.changed

      ansible.builtin.systemd:

        name: k3s

        daemon_reload: true

        enabled: true

    - name: Verify that all server nodes joined

      when: (groups[server_group] | length) > 1

      when: not ansible_check_mode and (groups[server_group] | length) > 1

      ansible.builtin.command:

        cmd: >

          k3s kubectl get nodes -l "node-role.kubernetes.io/control-plane=true" -o=jsonpath="{.items[*].metadata.name}"