rolling_update: fix pre and post osd upgrade play

when using --limit osds, the play before and after osd upgrade are
skipped because we use `hosts: "{{ mon_group_name | default('mons') }}[0]"`
using `hosts: "{{ osds_group_name | default('osds') }}" with
`delegate_to` to the first monitor addresses this issue.

Signed-off-by: Guillaume Abrioux <gabrioux@redhat.com>
(cherry picked from commit fc9f87c45f)

infrastructure-playbooks/rolling_update.yml

@@ -405,7 +405,7 @@
 
 
 - name: set osd flags
-  hosts: "{{ mon_group_name | default('mons') }}[0]"
+  hosts: "{{ osd_group_name | default('osds') }}"
   tags: osds
   become: True
   gather_facts: false
@@ -416,46 +416,50 @@
         name: ceph-facts
         tasks_from: container_binary.yml
 
-    - name: get pool list
-      command: "{{ ceph_cmd }} --cluster {{ cluster }} osd pool ls detail -f json"
-      register: pool_list
+    - name: set osd flags, disable autoscaler and balancer
       run_once: true
-      changed_when: false
-      check_mode: false
+      delegate_to: "{{ groups[mon_group_name][0] }}"
+      block:
+        - name: get pool list
+          command: "{{ ceph_cmd }} --cluster {{ cluster }} osd pool ls detail -f json"
+          register: pool_list
+          changed_when: false
+          check_mode: false
 
-    - name: get balancer module status
-      command: "{{ ceph_cmd }} --cluster {{ cluster }} balancer status -f json"
-      register: balancer_status_update
-      changed_when: false
-      check_mode: false
+        - name: get balancer module status
+          command: "{{ ceph_cmd }} --cluster {{ cluster }} balancer status -f json"
+          register: balancer_status_update
+          run_once: true
+          changed_when: false
+          check_mode: false
 
-    - name: set_fact pools_pgautoscaler_mode
-      set_fact:
-        pools_pgautoscaler_mode: "{{ pools_pgautoscaler_mode | default([]) | union([{'name': item.pool_name, 'mode': item.pg_autoscale_mode}]) }}"
-      with_items: "{{ pool_list.stdout | default('{}') | from_json }}"
+        - name: set_fact pools_pgautoscaler_mode
+          set_fact:
+            pools_pgautoscaler_mode: "{{ pools_pgautoscaler_mode | default([]) | union([{'name': item.pool_name, 'mode': item.pg_autoscale_mode}]) }}"
+          with_items: "{{ pool_list.stdout | default('{}') | from_json }}"
 
-    - name: disable balancer
-      command: "{{ ceph_cmd }} --cluster {{ cluster }} balancer off"
-      changed_when: false
-      when: (balancer_status_update.stdout | from_json)['active'] | bool
+        - name: disable balancer
+          command: "{{ ceph_cmd }} --cluster {{ cluster }} balancer off"
+          changed_when: false
+          when: (balancer_status_update.stdout | from_json)['active'] | bool
 
-    - name: disable pg autoscale on pools
-      command: "{{ ceph_cmd }} --cluster {{ cluster }} osd pool set {{ item.name }} pg_autoscale_mode off"
-      with_items: "{{ pools_pgautoscaler_mode }}"
-      when:
-        - pools_pgautoscaler_mode is defined
-        - item.mode == 'on'
+        - name: disable pg autoscale on pools
+          command: "{{ ceph_cmd }} --cluster {{ cluster }} osd pool set {{ item.name }} pg_autoscale_mode off"
+          with_items: "{{ pools_pgautoscaler_mode }}"
+          when:
+            - pools_pgautoscaler_mode is defined
+            - item.mode == 'on'
 
-    - name: set osd flags
-      ceph_osd_flag:
-        name: "{{ item }}"
-        cluster: "{{ cluster }}"
-      environment:
-        CEPH_CONTAINER_IMAGE: "{{ ceph_docker_registry + '/' + ceph_docker_image + ':' + ceph_docker_image_tag if containerized_deployment | bool else None }}"
-        CEPH_CONTAINER_BINARY: "{{ container_binary }}"
-      with_items:
-        - noout
-        - nodeep-scrub
+        - name: set osd flags
+          ceph_osd_flag:
+            name: "{{ item }}"
+            cluster: "{{ cluster }}"
+          environment:
+            CEPH_CONTAINER_IMAGE: "{{ ceph_docker_registry + '/' + ceph_docker_image + ':' + ceph_docker_image_tag if containerized_deployment | bool else None }}"
+            CEPH_CONTAINER_BINARY: "{{ container_binary }}"
+          with_items:
+            - noout
+            - nodeep-scrub
 
 - name: upgrade ceph osds cluster
   vars:
@@ -543,7 +547,7 @@
 
 
 - name: complete osd upgrade
-  hosts: "{{ mon_group_name|default('mons') }}[0]"
+  hosts: "{{ osd_group_name | default('osds') }}"
   tags: osds
   become: True
   gather_facts: false
@@ -554,51 +558,55 @@
         name: ceph-facts
         tasks_from: container_binary.yml
 
-    - name: re-enable pg autoscale on pools
-      command: "{{ ceph_cmd }} --cluster {{ cluster }} osd pool set {{ item.name }} pg_autoscale_mode on"
-      with_items: "{{ pools_pgautoscaler_mode }}"
-      when:
-        - pools_pgautoscaler_mode is defined
-        - item.mode == 'on'
+    - name: unset osd flags, re-enable pg autoscaler and balancer
+      run_once: true
+      delegate_to: "{{ groups[mon_group_name][0] }}"
+      block:
+        - name: re-enable pg autoscale on pools
+          command: "{{ ceph_cmd }} --cluster {{ cluster }} osd pool set {{ item.name }} pg_autoscale_mode on"
+          with_items: "{{ pools_pgautoscaler_mode }}"
+          when:
+            - pools_pgautoscaler_mode is defined
+            - item.mode == 'on'
 
-    - name: unset osd flags
-      ceph_osd_flag:
-        name: "{{ item }}"
-        cluster: "{{ cluster }}"
-        state: absent
-      environment:
-        CEPH_CONTAINER_IMAGE: "{{ ceph_docker_registry + '/' + ceph_docker_image + ':' + ceph_docker_image_tag if containerized_deployment | bool else None }}"
-        CEPH_CONTAINER_BINARY: "{{ container_binary }}"
-      with_items:
-        - noout
-        - nodeep-scrub
+        - name: unset osd flags
+          ceph_osd_flag:
+            name: "{{ item }}"
+            cluster: "{{ cluster }}"
+            state: absent
+          environment:
+            CEPH_CONTAINER_IMAGE: "{{ ceph_docker_registry + '/' + ceph_docker_image + ':' + ceph_docker_image_tag if containerized_deployment | bool else None }}"
+            CEPH_CONTAINER_BINARY: "{{ container_binary }}"
+          with_items:
+            - noout
+            - nodeep-scrub
 
-    - name: re-enable balancer
-      command: "{{ ceph_cmd }} --cluster {{ cluster }} balancer on"
-      changed_when: false
-      when: (balancer_status_update.stdout | from_json)['active'] | bool
+        - name: re-enable balancer
+          command: "{{ ceph_cmd }} --cluster {{ cluster }} balancer on"
+          changed_when: false
+          when: (balancer_status_update.stdout | from_json)['active'] | bool
 
-    - name: set_fact container_exec_cmd_osd
-      set_fact:
-        container_exec_cmd_update_osd: "{{ container_binary }} exec ceph-mon-{{ ansible_facts['hostname'] }}"
-      when: containerized_deployment | bool
+        - name: set_fact container_exec_cmd_osd
+          set_fact:
+            container_exec_cmd_update_osd: "{{ container_binary }} exec ceph-mon-{{ hostvars[groups[mon_group_name][0]]['ansible_facts']['hostname'] }}"
+          when: containerized_deployment | bool
 
-    - name: get osd versions
-      command: "{{ container_exec_cmd_update_osd|default('') }} ceph --cluster {{ cluster }} versions"
-      register: ceph_versions
-      changed_when: false
+        - name: get osd versions
+          command: "{{ container_exec_cmd_update_osd|default('') }} ceph --cluster {{ cluster }} versions"
+          register: ceph_versions
+          changed_when: false
 
-    - name: set_fact ceph_versions_osd
-      set_fact:
-        ceph_versions_osd: "{{ (ceph_versions.stdout|from_json).osd }}"
+        - name: set_fact ceph_versions_osd
+          set_fact:
+            ceph_versions_osd: "{{ (ceph_versions.stdout|from_json).osd }}"
 
-    # length == 1 means there is a single osds versions entry
-    # thus all the osds are running the same version
-    - name: complete osds upgrade
-      command: "{{ container_exec_cmd_update_osd|default('') }} ceph --cluster {{ cluster }} osd require-osd-release nautilus"
-      when:
-        - (ceph_versions.get('stdout', '{}')|from_json).get('osd', {}) | length == 1
-        - ceph_versions_osd | string is search("ceph version 14")
+        # length == 1 means there is a single osds versions entry
+        # thus all the osds are running the same version
+        - name: complete osds upgrade
+          command: "{{ container_exec_cmd_update_osd|default('') }} ceph --cluster {{ cluster }} osd require-osd-release nautilus"
+          when:
+            - (ceph_versions.get('stdout', '{}')|from_json).get('osd', {}) | length == 1
+            - ceph_versions_osd | string is search("ceph version 14")
 
 
 - name: upgrade ceph mdss cluster, deactivate all rank > 0