Add option to set node name as fqdn

Some software, that relies on corosync, checks nodes status by their
FQDN (with crmadmin -S). And ansible inventory_hostname may not match
with hosts FQDN. In this case you may set pacemaker_corosync_fqdn: true
and fqdn will be used in corosync config instead of inventory_hostname.

Author: Dmitriy Rabotjagov

README.md

@@ -7,4 +7,5 @@ Deploys corosync/pacemaker on Ubuntu 14.04
 
 - `pacemaker_corosync_group`: Ansible group name for corosync cluster (default: false, *mandatory*)
 - `pacemaker_corosync_ring_interface`: Interface to use for ring0 communications (default: false, *mandatory*)
+- `pacemaker_corosync_fqdn`: Whether use inventory_hostname or ansible_fqdn as node name for corosync (default: false)
 

defaults/main.yml

@@ -1,2 +1,3 @@
+pacemaker_corosync_fqdn: false
 pacemaker_corosync_group: false
 pacemaker_corosync_ring_interface: false

templates/corosync.conf.j2

@@ -30,7 +30,7 @@ nodelist {
 {% for node in groups[pacemaker_corosync_group]|sort %}
   node {
     ring0_addr: {{ hostvars[node]['ansible_' + pacemaker_corosync_ring_interface].ipv4.address }}
-    name: {{ node }}
+    name: {{ pacemaker_corosync_fqdn | bool | ternary(hostvars[node].ansible_fqdn, node) }}
     nodeid: {{ loop.index }}
   }
 {% endfor %}