---
- name: CEPH | Private IP des ersten Managers ermitteln
  ansible.builtin.set_fact:
    ceph_bootstrap_ip: "{{ hostvars[inventory_hostname]['ansible_' + private_interface]['ipv4']['address'] }}"
  when: inventory_hostname == groups['managers'][0]

- name: CEPH | Cluster auf dem ersten Manager initialisieren (Bootstrap)
  ansible.builtin.command:
    cmd: "cephadm bootstrap --mon-ip {{ ceph_bootstrap_ip }}"
    creates: /etc/ceph/ceph.conf
  when: inventory_hostname == groups['managers'][0]

- name: CEPH | Öffentlichen SSH-Schlüssel von cephadm abrufen
  ansible.builtin.command: "cephadm shell -- ceph cephadm get-pub-key"
  register: cephadm_pub_key
  changed_when: false
  delegate_to: "{{ groups['managers'][0] }}"
  run_once: true

- name: CEPH | Öffentlichen Schlüssel von cephadm auf allen Knoten für root verteilen
  ansible.posix.authorized_key:
    user: root
    key: "{{ hostvars[groups['managers'][0]]['cephadm_pub_key'].stdout }}"
    state: present
    key_options: 'no-port-forwarding,no-X11-forwarding,no-agent-forwarding,no-pty'

- name: CEPH | Andere Knoten zum Ceph-Cluster hinzufügen
  ansible.builtin.command:
    cmd: "ceph orch host add {{ item }} {{ hostvars[item]['ansible_' + private_interface]['ipv4']['address'] }}"
  loop: "{{ groups['all'] }}"
  delegate_to: "{{ groups['managers'][0] }}"
  run_once: true

- name: CEPH | Prüfen, ob bereits OSDs (Speichergeräte) vorhanden sind
  ansible.builtin.command: "ceph osd ls"
  register: existing_osds
  changed_when: false
  failed_when: false
  delegate_to: "{{ groups['managers'][0] }}"
  run_once: true

- name: CEPH | Spezifische Festplatte ({{ ceph_osd_device }}) auf jedem Knoten als OSD hinzufügen
  ansible.builtin.command: "ceph orch daemon add osd {{ item }}:{{ ceph_osd_device }}"
  loop: "{{ groups['all'] }}"
  delegate_to: "{{ groups['managers'][0] }}"
  run_once: true
  when: existing_osds.stdout | length == 0

- name: CEPH | Prüfen, ob CephFS bereits existiert
  ansible.builtin.command: "ceph fs ls -f json"
  register: cephfs_list
  changed_when: false
  delegate_to: "{{ groups['managers'][0] }}"
  run_once: true

- name: CEPH | CephFS Pools und Dateisystem erstellen, falls nicht vorhanden
  block:
    - name: Metadaten-Pool für CephFS erstellen
      ansible.builtin.command: "ceph osd pool create {{ cephfs_name }}_metadata"
    - name: Daten-Pool für CephFS erstellen
      ansible.builtin.command: "ceph osd pool create {{ cephfs_name }}_data"
    - name: CephFS-Dateisystem erstellen
      ansible.builtin.command: "ceph fs new {{ cephfs_name }} {{ cephfs_name }}_metadata {{ cephfs_name }}_data"
  when: cephfs_list.stdout | from_json | length == 0
  delegate_to: "{{ groups['managers'][0] }}"
  run_once: true

- name: CEPH | Metadaten-Server (MDS) für CephFS starten
  ansible.builtin.command: "ceph orch apply mds {{ cephfs_name }} --placement=2"
  delegate_to: "{{ groups['managers'][0] }}"
  run_once: true
  when: cephfs_list.stdout | from_json | length == 0

- name: CEPH | Ceph Admin-Schlüssel für das Mounten abrufen
  ansible.builtin.command: "ceph auth get-key client.admin"
  register: ceph_admin_key
  changed_when: false
  delegate_to: "{{ groups['managers'][0] }}"
  run_once: true

- name: CEPH | Mount-Punkt für CephFS erstellen
  ansible.builtin.file:
    path: /mnt/cephfs
    state: directory
    mode: '0755'

- name: CEPH | CephFS auf allen Knoten mounten (und in /etc/fstab eintragen)
  ansible.posix.mount:
    path: /mnt/cephfs
    src: "{{ hostvars[groups['managers'][0]]['ceph_bootstrap_ip'] }}:/"
    fstype: ceph
    opts: "name=admin,secret={{ ceph_admin_key.stdout }}"
    state: mounted