adopt: fix rbd mirror adoption

The rbd mirroring is broken because cephadm doesn't bindmount /etc/ceph anymore.
It means the keyrings and ceph config file aren't available after the
migration.
The idea here is to remove the current rbd mirror peer and add it back
to the mon config store so we aren't bound to the /etc/ceph directory.

Closes: https://bugzilla.redhat.com/show_bug.cgi?id=1967440

Signed-off-by: Guillaume Abrioux <gabrioux@redhat.com>
(cherry picked from commit 9c794aa)

infrastructure-playbooks/cephadm-adopt.yml

@@ -329,6 +329,106 @@
       delegate_to: '{{ groups[mon_group_name][0] }}'
       when: ceph_docker_registry_auth | bool
 
+
+- name: store existing rbd mirror peers in monitor config store
+  hosts: "{{ rbdmirror_group_name|default('rbdmirrors') }}"
+  become: true
+  any_errors_fatal: true
+  gather_facts: true
+  tasks:
+    - name: store existing rbd mirror peers in monitor config store
+      when: ceph_rbd_mirror_configure | default(False) | bool
+      block:
+        - name: import ceph-defaults
+          import_role:
+            name: ceph-defaults
+
+        - name: import ceph-validate
+          import_role:
+            name: ceph-validate
+            tasks_from: check_rbdmirror.yml
+
+        - name: import container_binary
+          import_role:
+            name: ceph-facts
+            tasks_from: container_binary.yml
+
+        - name: set_fact rbd_cmd
+          set_fact:
+            rbd_cmd: "{{ container_binary + ' run --rm --net=host -v /etc/ceph:/etc/ceph:z -v /var/lib/ceph:/var/lib/ceph:z -v /var/run/ceph:/var/run/ceph:z --entrypoint=rbd ' + ceph_docker_registry + '/' + ceph_docker_image + ':' + ceph_docker_image_tag if containerized_deployment | bool else 'ceph' }} --cluster {{ cluster }} -n client.rbd-mirror.{{ ansible_facts['hostname'] }} -k /etc/ceph/{{ cluster }}.client.rbd-mirror.{{ ansible_facts['hostname'] }}.keyring"
+
+        - name: set_fact admin_rbd_cmd
+          set_fact:
+            admin_rbd_cmd: "{{ container_binary + ' run --rm --net=host -v /etc/ceph:/etc/ceph:z -v /var/lib/ceph:/var/lib/ceph:z -v /var/run/ceph:/var/run/ceph:z --entrypoint=rbd ' + ceph_docker_registry + '/' + ceph_docker_image + ':' + ceph_docker_image_tag if containerized_deployment | bool else 'ceph' }} --cluster {{ cluster }}"
+        - name: get mirror pool info
+          command: "{{ rbd_cmd }} mirror pool info {{ ceph_rbd_mirror_pool }} --format json"
+          register: mirror_pool_info
+          changed_when: false
+
+        - name: set_fact mirror_peer_found
+          set_fact:
+            mirror_peer_uuid: "{{ ((mirror_pool_info.stdout | from_json | default('{}'))['peers'] | selectattr('site_name', 'match', '^'+ceph_rbd_mirror_remote_cluster+'$') | map(attribute='uuid') | list) }}"
+
+        - name: remove current rbd mirror peer, add new peer into mon config store
+          when: mirror_peer_uuid | length > 0
+          block:
+            - name: get remote user keyring
+              slurp:
+                src: "/etc/ceph/{{ ceph_rbd_mirror_remote_cluster }}.{{ ceph_rbd_mirror_remote_user }}.keyring"
+              register: remote_user_keyring
+
+            - name: get quorum_status
+              command: "{{ cephadm_cmd }} shell --fsid {{ fsid }} -- ceph --cluster {{ cluster }} quorum_status --format json"
+              changed_when: false
+              delegate_to: "{{ groups[mon_group_name][0] }}"
+              register: quorum_status
+              run_once: true
+              environment:
+                CEPHADM_IMAGE: '{{ ceph_docker_registry }}/{{ ceph_docker_image }}:{{ ceph_docker_image_tag }}'
+
+            - name: set_fact mon_ip_list
+              set_fact:
+                mon_ip_list: "{{ mon_ip_list | default([]) | union([item['addr'].split(':')[0]]) }}"
+              loop: "{{ (quorum_status.stdout | from_json | default('{}'))['monmap']['mons'] }}"
+              run_once: true
+
+            - name: remove current mirror peer
+              command: "{{ admin_rbd_cmd }} mirror pool peer remove {{ ceph_rbd_mirror_pool }} {{ ((mirror_pool_info.stdout | from_json | default('{}'))['peers'] | selectattr('site_name', 'match', '^'+ceph_rbd_mirror_remote_cluster+'$') | map(attribute='uuid') | list)[0] }}"
+              delegate_to: "{{ groups.get(mon_group_name | default('mons'))[0] }}"
+              changed_when: false
+
+            - name: get remote user keyring secret
+              set_fact:
+                remote_user_keyring_secret: "{{ item.split('=', 1)[1] | trim }}"
+              with_items: "{{ (remote_user_keyring.content | b64decode).split('\n') }}"
+              when: "'key = ' in item"
+
+            - name: create a temporary file
+              tempfile:
+                path: /etc/ceph
+                state: file
+                suffix: _ceph-ansible
+              register: tmp_file
+              delegate_to: "{{ groups.get(mon_group_name | default('mons'))[0] }}"
+
+            - name: write secret to temporary file
+              copy:
+                dest: "{{ tmp_file.path }}"
+                content: "{{ remote_user_keyring_secret }}"
+              delegate_to: "{{ groups.get(mon_group_name | default('mons'))[0] }}"
+
+            - name: re-add mirror peer
+              command: "{{ admin_rbd_cmd }} mirror pool peer add {{ ceph_rbd_mirror_pool }} {{ ceph_rbd_mirror_remote_user }}@{{ ceph_rbd_mirror_remote_cluster }} --remote-mon-host {{ ','.join(mon_ip_list) }} --remote-key-file {{ tmp_file.path }}"
+              delegate_to: "{{ groups.get(mon_group_name | default('mons'))[0] }}"
+              changed_when: false
+
+            - name: rm temporary file
+              file:
+                path: "{{ tmp_file.path }}"
+                state: absent
+              delegate_to: "{{ groups.get(mon_group_name | default('mons'))[0] }}"
+
+
 - name: adopt ceph mon daemons
   hosts: "{{ mon_group_name|default('mons') }}"
   serial: 1