- block:
    - name: Register with CheckMK Update Server
      shell: |
        cmk-update-agent register -H {{ instance_name | default(inventory_hostname) }} \
        --user {{ cmk_username }} \
        --secret {{ cmk_secret }}
      changed_when: false
      notify: remove agent
      tags: cmk_register

    - name: Check-In with server
      shell: |
        cmk-update-agent -v
      changed_when: false
      notify: remove agent
      tags: cmk_register
  rescue:
    - name: Gather facts of packages
      package_facts:
        manager: "auto"
      tags: cmk_register

    - name: Ensure check_mk_agent installed (again)
      package: 
        name: /tmp/check-mk-agent.rpm
        state: latest
        skip_gpg_check: true
      notify:
        - restart xinetd
        - ensure firewall open
      when: "'check-mk-agent' not in ansible_facts.packages"
      tags: cmk_register

    - name: Gather facts of packages (again)
      package_facts:
        manager: "auto"
      tags: cmk_register

    - name: Register with CheckMK Update Server (retry)
      shell: |
        cmk-update-agent register -H {{ instance_name | default(inventory_hostname) }} --user {{ cmk_username }} \
        --secret {{ cmk_secret }}
      changed_when: false
      when: "'check-mk-agent' in ansible_facts.packages"
      notify: remove agent
      tags: cmk_register

    - name: Check-In with server
      shell: |
        cmk-update-agent -v
      changed_when: false
      notify: remove agent
      tags: cmk_register