[b/r] Create GaleraBackup CRs dynamically in backup role

Discover Galera instances from OpenStackControlPlane CR
(spec.galera.templates keys) and create GaleraBackup CRs for each
before triggering the backup jobs.

Adds galerabackup.yaml.j2 template and configurable storage class/size
defaults (cifmw_backup_restore_galera_storage_class,
cifmw_backup_restore_galera_storage_request,
cifmw_backup_restore_galera_transfer_storage_request).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: stuggi

docs/dev/backup-restore/role/cifmw_backup_restore/defaults/main.yml

@@ -28,6 +28,9 @@ cifmw_backup_restore_auto_ack: false
 
 # Backup
 cifmw_backup_restore_galera_backup_timeout: 10m
+cifmw_backup_restore_galera_storage_class: ""
+cifmw_backup_restore_galera_storage_request: 5Gi
+cifmw_backup_restore_galera_transfer_storage_request: 5Gi
 cifmw_backup_restore_oadp_backup_timeout: 30m
 cifmw_backup_restore_storage_location: velero-1
 cifmw_backup_restore_backup_ttl: 720h

docs/dev/backup-restore/role/cifmw_backup_restore/tasks/backup.yml

@@ -114,6 +114,42 @@
       - "Step 1: Trigger Galera Database Dumps"
       - "========================================"
 
+- name: Get Galera instance names from OpenStackControlPlane
+  ansible.builtin.shell: |
+    oc get openstackcontrolplane -n {{ cifmw_backup_restore_namespace }} \
+      -o jsonpath='{.items[0].spec.galera.templates}' | jq -r 'keys[]'
+  register: _galera_instance_names
+  changed_when: false
+
+- name: Set Galera instance list
+  ansible.builtin.set_fact:
+    _galera_instances: "{{ _galera_instance_names.stdout_lines if _galera_instance_names.stdout != '' else [] }}"
+
+- name: Get default StorageClass if not specified
+  ansible.builtin.shell: |
+    oc get storageclass -o jsonpath='{.items[?(@.metadata.annotations.storageclass\.kubernetes\.io/is-default-class=="true")].metadata.name}'
+  register: _default_storage_class
+  changed_when: false
+  when: cifmw_backup_restore_galera_storage_class == ""
+
+- name: Set Galera backup storage class
+  ansible.builtin.set_fact:
+    _galera_storage_class: "{{ cifmw_backup_restore_galera_storage_class if cifmw_backup_restore_galera_storage_class != '' else _default_storage_class.stdout }}"
+
+- name: Render GaleraBackup CRs
+  ansible.builtin.template:
+    src: galerabackup.yaml.j2
+    dest: "{{ _cifmw_backup_restore_rendered_dir.path }}/galerabackup-{{ item }}.yaml"
+  vars:
+    galera_instance_name: "{{ item }}"
+  loop: "{{ _galera_instances }}"
+
+- name: Create GaleraBackup CRs
+  ansible.builtin.shell: |
+    oc apply -f {{ _cifmw_backup_restore_rendered_dir.path }}/galerabackup-{{ item }}.yaml
+  loop: "{{ _galera_instances }}"
+  changed_when: true
+
 - name: Get list of GaleraBackup cronjobs
   ansible.builtin.shell: |
     oc get cronjob -n {{ cifmw_backup_restore_namespace }} -l app=galera -o jsonpath='{.items[*].metadata.name}'

docs/dev/backup-restore/role/cifmw_backup_restore/templates/galerabackup.yaml.j2

@@ -0,0 +1,13 @@
+apiVersion: mariadb.openstack.org/v1beta1
+kind: GaleraBackup
+metadata:
+  name: {{ galera_instance_name }}
+  namespace: {{ cifmw_backup_restore_namespace }}
+spec:
+  databaseInstance: {{ galera_instance_name }}
+{% if _galera_storage_class %}
+  storageClass: {{ _galera_storage_class }}
+{% endif %}
+  storageRequest: {{ cifmw_backup_restore_galera_storage_request }}
+  transferStorage:
+    storageRequest: {{ cifmw_backup_restore_galera_transfer_storage_request }}