Merge "Ensure the role works when run in serial"

handlers/main.yml

@@ -81,6 +81,7 @@
   delegate_to: "{{ item }}"
   when:
     - hostvars[item]['galera_cluster_ready'] is defined
+    - hostvars[item]['galera_deployed'] | default(false) | bool
   with_items:
     - "{{ ansible_play_hosts }}"
   run_once: true

tasks/galera_install.yml

@@ -91,3 +91,7 @@
     section: galera
     option: deployed
     value: true
+
+- name: Set the galera existing cluster fact
+  set_fact:
+    galera_deployed: true