ceph-facts: only get fsid when monitor are present

When running the rolling_update playbook with an inventory without
monitor nodes defined (like external scenario) then we can't retrieve
the cluster fsid from the running monitor.
In this scenario we have to pass this information manually (group_vars
or host_vars).

Closes: https://bugzilla.redhat.com/show_bug.cgi?id=1877426

Signed-off-by: Dimitri Savineau <dsavinea@redhat.com>
(cherry picked from commit f63022dfec)

infrastructure-playbooks/rolling_update.yml

@@ -861,25 +861,33 @@
       command: "{{ container_binary }} exec ceph-mon-{{ hostvars[groups[mon_group_name][0]]['ansible_hostname'] }} ceph --cluster {{ cluster }} osd require-osd-release octopus"
       delegate_to: "{{ groups[mon_group_name][0] }}"
       run_once: True
-      when: containerized_deployment | bool
+      when:
+        - containerized_deployment | bool
+        - groups.get(mon_group_name, []) | length > 0
 
     - name: non container | disallow pre-octopus OSDs and enable all new octopus-only functionality
       command: "ceph --cluster {{ cluster }} osd require-osd-release octopus"
       delegate_to: "{{ groups[mon_group_name][0] }}"
       run_once: True
-      when: not containerized_deployment | bool
+      when:
+        - not containerized_deployment | bool
+        - groups.get(mon_group_name, []) | length > 0
 
     - name: container | enable msgr2 protocol
       command: "{{ container_binary }} exec ceph-mon-{{ hostvars[groups[mon_group_name][0]]['ansible_hostname'] }} ceph --cluster {{ cluster }} mon enable-msgr2"
       delegate_to: "{{ groups[mon_group_name][0] }}"
       run_once: True
-      when: containerized_deployment | bool
+      when:
+        - containerized_deployment | bool
+        - groups.get(mon_group_name, []) | length > 0
 
     - name: non container | enable msgr2 protocol
       command: "ceph --cluster {{ cluster }} mon enable-msgr2"
       delegate_to: "{{ groups[mon_group_name][0] }}"
       run_once: True
-      when: not containerized_deployment | bool
+      when:
+        - not containerized_deployment | bool
+        - groups.get(mon_group_name, []) | length > 0
 
     - import_role:
         name: ceph-handler

roles/ceph-facts/tasks/facts.yml

@@ -137,12 +137,16 @@
   register: rolling_update_fsid
   delegate_to: "{{ mon_host | default(groups[mon_group_name][0]) }}"
   until: rolling_update_fsid is succeeded
-  when: rolling_update | bool
+  when:
+    - rolling_update | bool
+    - groups.get(mon_group_name, []) | length > 0
 
 - name: set_fact fsid
   set_fact:
     fsid: "{{ (rolling_update_fsid.stdout | from_json).fsid }}"
-  when: rolling_update | bool
+  when:
+    - rolling_update | bool
+    - groups.get(mon_group_name, []) | length > 0
 
 - name: set_fact ceph_current_status (convert to json)
   set_fact:

tox-external_clients.ini

@@ -64,4 +64,18 @@ commands=
 
   bash -c "CEPH_STABLE_RELEASE={env:CEPH_STABLE_RELEASE:octopus} py.test --reruns 5 --reruns-delay 1 -n 8 --durations=0 --sudo -v --connection=ansible --ansible-inventory={changedir}/inventory/external_clients-hosts --ssh-config={changedir}/vagrant_ssh_config {toxinidir}/tests/functional/tests/test_install.py::TestCephConf"
 
+  ansible-playbook -vv -i {changedir}/inventory/external_clients-hosts {toxinidir}/infrastructure-playbooks/rolling_update.yml --extra-vars "\
+      ireallymeanit=yes \
+      fetch_directory={env:FETCH_DIRECTORY:{changedir}/fetch} \
+      fsid=40358a87-ab6e-4bdc-83db-1d909147861c \
+      ceph_stable_release={env:CEPH_STABLE_RELEASE:octopus} \
+      external_cluster_mon_ips=192.168.31.10,192.168.31.11,192.168.31.12 \
+      generate_fsid=false \
+      ceph_docker_registry_auth=True \
+      ceph_docker_registry_username={env:DOCKER_HUB_USERNAME} \
+      ceph_docker_registry_password={env:DOCKER_HUB_PASSWORD} \
+  "
+
+  bash -c "CEPH_STABLE_RELEASE={env:CEPH_STABLE_RELEASE:octopus} py.test --reruns 5 --reruns-delay 1 -n 8 --durations=0 --sudo -v --connection=ansible --ansible-inventory={changedir}/inventory/external_clients-hosts --ssh-config={changedir}/vagrant_ssh_config {toxinidir}/tests/functional/tests/test_install.py::TestCephConf"
+
   vagrant destroy --force