Configurable instance_suffix

tasks/elasticsearch-parameters.yml

@@ -58,7 +58,8 @@
 #For directories we also use the {{inventory_hostname}}-{{ es_instance_name }} - this helps if we have a shared SAN.
 
 - name: set fact instance_suffix
-  set_fact: instance_suffix={{inventory_hostname}}-{{ es_instance_name }}
+  set_fact:
+    instance_suffix: "{{ es_instance_suffix | default([inventory_hostname, es_instance_name] | join('-')) }}"
 - name: set fact pid_dir
   set_fact: pid_dir={{ es_pid_dir }}/{{instance_suffix}}
 - name: set fact log_dir