checkmk_deploy_agent/tasks/Linux.yml

---
- name: "{{ ansible_system }}: Get installed packages using native commands (RedHat)."
  become: true
  ansible.builtin.shell: rpm -qa --qf '%{NAME}\n'
  register: __checkmk_agent_rpm_packages
  changed_when: false
  when: ansible_os_family == "RedHat"
  no_log: true
  tags:
    - get-package-facts

- name: "{{ ansible_system }}: Get installed packages using native commands (Debian)."
  become: true
  ansible.builtin.shell: dpkg-query -W -f='${Package}\n'
  register: __checkmk_agent_deb_packages
  changed_when: false
  when: ansible_os_family == "Debian"
  no_log: true
  tags:
    - get-package-facts

- name: "{{ ansible_system }}: Create simple package list from RPM output."
  ansible.builtin.set_fact:
    __checkmk_agent_installed_packages: "{{ __checkmk_agent_rpm_packages.stdout_lines }}"
  when: ansible_os_family == "RedHat" and __checkmk_agent_rpm_packages is defined
  tags:
    - get-package-facts

- name: "{{ ansible_system }}: Create simple package list from DEB output."
  ansible.builtin.set_fact:
    __checkmk_agent_installed_packages: "{{ __checkmk_agent_deb_packages.stdout_lines }}"
  when: ansible_os_family == "Debian" and __checkmk_agent_deb_packages is defined
  tags:
    - get-package-facts

- name: "{{ ansible_system }}: Populate service facts."
  ansible.builtin.service_facts:

- name: "{{ ansible_system }}: Check if systemd version requires xinetd."
  become: true
  ansible.builtin.shell: |
    if command -v rpm >/dev/null 2>&1; then
      rpm -q systemd --qf '%{VERSION}\n' | head -n1
    elif command -v dpkg-query >/dev/null 2>&1; then
      dpkg-query -W -f='${Version}\n' systemd | cut -d- -f1
    else
      systemctl --version | head -n1 | awk '{print $2}'
    fi
  register: __checkmk_agent_systemd_version
  changed_when: false
  failed_when: false
  when: checkmk_agent_prep_legacy | bool
  tags:
    - check-systemd

- name: "{{ ansible_system }}: Run Legacy agent tasks."
  block:
    - name: "{{ ansible_system }}: Install xinetd"
      become: true
      ansible.builtin.package:
        name: xinetd
        state: present
      tags:
        - install-package
        - install-prerequisites

    - name: "{{ ansible_system }}: Enable xinetd"
      become: true
      ansible.builtin.service:
        name: xinetd
        state: started
        enabled: true
      tags:
        - enable-xinetd
  when: |
    checkmk_agent_prep_legacy | bool
    and __checkmk_agent_systemd_version is defined
    and __checkmk_agent_systemd_version.stdout is defined
    and __checkmk_agent_systemd_version.stdout | int < 220

- name: "{{ ansible_system }}: Download Vanilla agent."
  ansible.builtin.get_url:
    url: "{{ __checkmk_agent_agent.url.cre }}"
    validate_certs: "{{ checkmk_agent_server_validate_certs | bool }}"
    dest: "{{ __checkmk_agent_agent.file.cre }}"
    mode: '0640'
    timeout: "{{ checkmk_agent_download_timeout | default(omit) }}"
  when: checkmk_agent_edition | lower == "cre"
  register: __checkmk_agent_download_state
  retries: 3
  delay: 10
  until: "not __checkmk_agent_download_state.failed | bool"
  delegate_to: "{{ checkmk_agent_delegate_download }}"
  tags:
    - download-package

- name: "{{ ansible_os_family }}: Run OS Family specific tasks."
  ansible.builtin.include_tasks: "{{ ansible_os_family }}.yml"
  tags:
    - include-os-family-tasks

- name: "{{ ansible_system }}: Create host on server."
  checkmk.general.host:
    server_url: "{{ checkmk_agent_server_protocol }}://{{ checkmk_agent_server }}:{{ checkmk_agent_server_port }}/"
    site: "{{ checkmk_agent_site }}"
    validate_certs: "{{ checkmk_agent_server_validate_certs | bool }}"
    automation_user: "{{ checkmk_agent_user }}"
    automation_secret: "{{ __checkmk_agent_auth }}"
    folder: "{{ checkmk_agent_folder | default(omit) }}"
    name: "{{ checkmk_agent_host_name }}"
    attributes: "{{ checkmk_agent_host_attributes }}"
    state: "present"
  become: false
  register: __checkmk_agent_create_result
  failed_when: |
    (__checkmk_agent_create_result.failed == true) and
    ("The host is already part of the specified target folder" not in __checkmk_agent_create_result.msg)
  delegate_to: "{{ checkmk_agent_delegate_api_calls }}"
  when: checkmk_agent_add_host | bool
  notify: "Activate changes"

# ============================================================
# HIER IST DIE ÄNDERUNG! Diese Zeile wurde geändert:
# VORHER: when: __checkmk_agent_create_result.changed | bool
# JETZT:  when: checkmk_agent_add_host | bool
# ============================================================
- name: "Ensure registration readyness."  # noqa no-handler
  when: checkmk_agent_add_host | bool
  block:
    - name: "Trigger activation of changes."
      ansible.builtin.meta: flush_handlers

- name: "{{ ansible_system }}: Check for Agent Updater Binary."
  ansible.builtin.stat:
    path: /usr/bin/cmk-update-agent
  register: __checkmk_agent_updater_binary

- name: "{{ ansible_system }}: Check for Agent Controller Binary."
  ansible.builtin.stat:
    path: /usr/bin/cmk-agent-ctl
  register: __checkmk_agent_controller_binary

- name: "{{ ansible_system }}: Override binary checks for unsupported architectures."
  ansible.builtin.set_fact:
    __checkmk_agent_updater_binary:
      stat:
        exists: false
    __checkmk_agent_controller_binary:
      stat:
        exists: false
  when: ansible_architecture not in ['x86_64', 'aarch64']

- name: "{{ ansible_system }}: Read Updater State."
  become: true
  ansible.builtin.command: cat /var/lib/check_mk_agent/cache/plugins_cmk-update-agent.cache
  register: __checkmk_agent_updater_state
  changed_when: false
  failed_when: |
    not __checkmk_agent_updater_state.rc == 0
    and not __checkmk_agent_updater_state.rc == 1

- name: "{{ ansible_system }}: Read Agent Controller State."
  become: true
  ansible.builtin.command: cat /var/lib/cmk-agent/registered_connections.json
  register: __checkmk_agent_registered_connections
  changed_when: false
  failed_when: |
    not __checkmk_agent_registered_connections.rc == 0
    and not __checkmk_agent_registered_connections.rc == 1

- name: "{{ ansible_system }}: Register Agent for automatic Updates using User Password."
  become: true
  ansible.builtin.shell: |
    cmk-update-agent register -H {{ checkmk_agent_host_name }} \
    -s {{ checkmk_agent_registration_server }} -i {{ checkmk_agent_registration_site }} -p {{ checkmk_agent_registration_server_protocol }} \
    -U {{ checkmk_agent_user }} -P {{ __checkmk_agent_auth | ansible.builtin.quote }}
  no_log: "{{ checkmk_agent_no_log | bool }}"
  register: __checkmk_agent_update_state
  when: |
    checkmk_agent_edition | lower != "cre"
    and __checkmk_agent_updater_binary.stat.exists | bool
    and checkmk_agent_update | bool
    and (checkmk_agent_pass is defined and checkmk_agent_pass | length)
    and (checkmk_agent_secret is not defined)
    and not (
      (checkmk_agent_registration_server + '/' + checkmk_agent_registration_site in __checkmk_agent_updater_state.stdout)
      and ('"error": null' in __checkmk_agent_updater_state.stdout)
    )
  changed_when: "'Successfully registered agent of host' in __checkmk_agent_update_state.stderr"

- name: "{{ ansible_system }}: Register Agent for automatic Updates using Automation Secret."
  become: true
  ansible.builtin.shell: |
    cmk-update-agent register -H {{ checkmk_agent_host_name }} \
    -s {{ checkmk_agent_registration_server }} -i {{ checkmk_agent_registration_site }} -p {{ checkmk_agent_registration_server_protocol }} \
    -U {{ checkmk_agent_user }} -S {{ __checkmk_agent_auth | ansible.builtin.quote }}
  no_log: "{{ checkmk_agent_no_log | bool }}"
  register: __checkmk_agent_update_state
  when: |
    checkmk_agent_edition | lower != "cre"
    and __checkmk_agent_updater_binary.stat.exists | bool
    and checkmk_agent_update | bool
    and (checkmk_agent_secret is defined and checkmk_agent_secret | length)
    and not (
      (checkmk_agent_registration_server + '/' + checkmk_agent_registration_site in __checkmk_agent_updater_state.stdout)
      and ('"error": null' in __checkmk_agent_updater_state.stdout)
    )
  changed_when: "'Successfully registered agent of host' in __checkmk_agent_update_state.stderr"

- name: "{{ ansible_system }}: Register Agent for TLS directly."
  become: true
  ansible.builtin.shell: |
    cmk-agent-ctl register -H {{ checkmk_agent_host_name }} \
    -s {{ checkmk_agent_registration_server }} -i {{ checkmk_agent_registration_site }} \
    -U {{ checkmk_agent_user }} -P {{ __checkmk_agent_auth }} --trust-cert
  no_log: "{{ checkmk_agent_no_log | bool }}"
  register: __checkmk_agent_tls_state
  retries: 3
  delay: 5
  until: __checkmk_agent_tls_state.rc == 0
  failed_when: false
  when: |
    __checkmk_agent_controller_binary.stat.exists | bool
    and checkmk_agent_tls | bool
  changed_when: "'Registration complete' in __checkmk_agent_tls_state.stdout"

- name: "{{ ansible_system }}: Log registration failure details."
  ansible.builtin.debug:
    msg: |
      ========================================
      REGISTRATION FAILED AFTER 3 RETRIES
      ========================================
      Host: {{ checkmk_agent_host_name }}
      Server: {{ checkmk_agent_registration_server }}
      Site: {{ checkmk_agent_registration_site }}
      
      Return Code: {{ __checkmk_agent_tls_state.rc | default('N/A') }}
      
      STDOUT:
      {{ __checkmk_agent_tls_state.stdout | default('No output') }}
      
      STDERR:
      {{ __checkmk_agent_tls_state.stderr | default('No errors') }}
      
      Possible causes:
      - Agent receiver service not running on monitoring server
      - Network connectivity issues (firewall, routing)
      - Authentication failed (check username/password)
      - Host not created in CheckMK yet
      - TLS certificate issues
      - Timing issue (agent controller not fully started)
      
      Troubleshooting steps:
      1. Check agent receiver logs on monitoring server
      2. Verify host exists in CheckMK: Setup -> Hosts
      3. Test connection: curl -k https://{{ checkmk_agent_registration_server }}:8000/{{ checkmk_agent_registration_site }}/agent-receiver/register_existing
      4. Check cmk-agent-ctl status on this host
      ========================================
  when: |
    __checkmk_agent_tls_state is defined
    and __checkmk_agent_tls_state.rc is defined
    and __checkmk_agent_tls_state.rc != 0

- name: "{{ ansible_system }}: Create temporary proxy-register file."
  become: true
  ansible.builtin.copy:
    dest: "{{ __checkmk_agent_host_tmp_dir }}/checkmk-import"
    mode: u=r,g=,o=
    owner: cmk-agent
    group: cmk-agent
    content: "{{ __checkmk_agent_proxy_registration_state.stdout }}"
  no_log: "{{ checkmk_agent_no_log | bool }}"
  when: |
    __checkmk_agent_controller_binary.stat.exists | bool
    and checkmk_agent_tls | bool
    and checkmk_agent_delegate_registration | bool
    and (__checkmk_agent_auth is defined and __checkmk_agent_auth | length)
    and not checkmk_agent_registration_server + '/' + checkmk_agent_registration_site in __checkmk_agent_registered_connections.stdout
    and __checkmk_agent_proxy_registration_state is defined

- name: "{{ ansible_system }}: Import proxy-register file."
  become: true
  ansible.builtin.command: "cmk-agent-ctl import {{ __checkmk_agent_host_tmp_dir }}/checkmk-import"
  no_log: "{{ checkmk_agent_no_log | bool }}"
  register: __checkmk_agent_import_result
  when: |
    __checkmk_agent_controller_binary.stat.exists | bool
    and checkmk_agent_tls | bool
    and checkmk_agent_delegate_registration | bool
    and (__checkmk_agent_auth is defined and __checkmk_agent_auth | length)
    and not checkmk_agent_registration_server + '/' + checkmk_agent_registration_site in __checkmk_agent_registered_connections.stdout
    and __checkmk_agent_proxy_registration_state is defined
  changed_when: __checkmk_agent_import_result.rc == 0

- name: "{{ ansible_system }}: Clean-up proxy-register temporary file."
  become: true
  ansible.builtin.file:
    path: "{{ __checkmk_agent_host_tmp_dir }}/checkmk-import"
    state: absent
  no_log: "{{ checkmk_agent_no_log | bool }}"
  when: |
    __checkmk_agent_controller_binary.stat.exists | bool
    and checkmk_agent_tls | bool
    and checkmk_agent_delegate_registration | bool
    and (__checkmk_agent_auth is defined and __checkmk_agent_auth | length)
    and not checkmk_agent_registration_server + '/' + checkmk_agent_registration_site in __checkmk_agent_registered_connections.stdout
    and __checkmk_agent_proxy_registration_state is defined

- name: "{{ ansible_system }}: Verify Checkmk Agent Port is open."
  ansible.builtin.wait_for:
    port: "{{ checkmk_agent_port }}"
    timeout: 60
  when: checkmk_agent_mode == 'pull'

- name: "{{ ansible_system }}: Initial push of data for push agent"  # noqa no-changed-when
  become: true
  ansible.builtin.command: cmk-agent-ctl push
  when: checkmk_agent_mode == 'push'