mon: fix with_items being evaluated before when

Ansible evaluates the 'with_items' before the 'when' so if the inventory
does not have the group declared it'll fail. To fix this, we set an
empty array to make the with_items happy and then evaluate with the
'when'.

Signed-off-by: Sébastien Han <seb@redhat.com>

diff --git a/roles/ceph-mon/tasks/docker/fetch_configs.yml b/roles/ceph-mon/tasks/docker/fetch_configs.yml
index 5b8df68ff4ca5e69c556fa67daba29c33832a10e..a96f34c8873064a79f02b6faf4bf4b6242acbe16 100644 (file)
--- a/roles/ceph-mon/tasks/docker/fetch_configs.yml
+++ b/roles/ceph-mon/tasks/docker/fetch_configs.yml
@@ -13,7 +13,7 @@
 - name: add mgr keys to config and keys paths
   set_fact:
     tmp_ceph_mgr_keys: /etc/ceph/{{ cluster }}.mgr.{{ hostvars[item]['ansible_hostname'] }}.keyring
-  with_items: "{{ groups[mgr_group_name] }}"
+  with_items: "{{ groups.get(mgr_group_name, []) }}"
   register: tmp_ceph_mgr_keys_result
   when: "{{ groups.get(mgr_group_name, []) | length > 0 }}"