update: use flags noout and nodeep-scrub only

1. set noout and nodeep-scrub flags,
2. upgrade each OSD node, one by one, wait for active+clean pgs
3. after all osd nodes are upgraded, unset flags

Signed-off-by: Guillaume Abrioux <gabrioux@redhat.com>
Co-authored-by: Rachana Patel <racpatel@redhat.com>
(cherry picked from commit 548db78b95)

infrastructure-playbooks/rolling_update.yml

@@ -326,6 +326,19 @@
         - containerized_deployment
 
 
+- name: set osd flags
+  hosts: "{{ mon_group_name | default('mons') }}[0]"
+  become: True
+  roles:
+    - ceph-defaults
+    - ceph-facts
+  post_tasks:
+    - name: set osd flags
+      command: "{{ docker_exec_cmd | default('') }} ceph --cluster {{ cluster }} osd set {{ item }}"
+      with_items:
+        - noout
+        - nodeep-scrub
+
 - name: upgrade ceph osds cluster
 
   vars:
@@ -419,7 +432,7 @@
 - name: unset osd flags
 
   hosts:
-    - "{{ mon_group_name|default('mons') }}"
+    - "{{ mon_group_name | default('mons') }}[0]"
 
   become: True
 
@@ -435,11 +448,10 @@
         - containerized_deployment
 
     - name: unset osd flags
-      command: "{{ docker_exec_cmd_update_osd|default('') }} ceph osd unset {{ item }} --cluster {{ cluster }}"
+      command: "{{ docker_exec_cmd_update_osd | default('') }} ceph osd unset {{ item }} --cluster {{ cluster }}"
       with_items:
         - noout
-        - norebalance
-      delegate_to: "{{ groups[mon_group_name][0] }}"
+        - nodeep-scrub
 
     - name: get osd versions
       command: "{{ docker_exec_cmd_update_osd|default('') }} ceph --cluster {{ cluster }} versions"