Enable Mongo auth.

playbooks/roles/mongo_2_6/defaults/main.yml

@@ -31,6 +31,7 @@ MONGO_USERS:
 
 MONGO_CLUSTERED: false
 MONGO_BIND_IP: 127.0.0.1
+MONGO_AUTH: true
 
 MONGO_USE_SMALLFILES: true
 

playbooks/roles/mongo_2_6/templates/mongodb.conf.j2

@@ -38,9 +38,8 @@ replSet = {{ mongo_repl_set }}
 # Enables periodic logging of CPU utilization and I/O wait
 #cpu = true
 
-# Turn on/off security.  Off is currently the default
-#noauth = true
-#auth = true
+# Turn on/off security.  On is currently the default
+auth = {{ MONGO_AUTH | ternary("true", "false") }}
 
 # Verbose logging output.
 #verbose = true

playbooks/roles/mongo_3_0/defaults/main.yml

@@ -42,6 +42,7 @@ MONGO_USERS:
 MONGO_CLUSTERED: false
 MONGO_BIND_IP: 127.0.0.1
 MONGO_REPL_SET: "rs0"
+MONGO_AUTH: true
 
 # Cluster member configuration
 # Fed directly into mongodb_replica_set module

playbooks/roles/mongo_3_0/templates/mongod.conf.j2

@@ -34,6 +34,7 @@ replication:
   replSetName: {{ MONGO_REPL_SET }}
 
 security:
+  authorization: {{ MONGO_AUTH | ternary("enabled", "disabled") }}
   keyFile: {{ mongo_key_file }}
 
 {% endif %}