Merge pull request #2911 from edx/jibsheet/mongo_3-play-updates

Update mongo 3.0 play to use our two new roles

playbooks/edx-east/mongo_3_0.yml

@@ -16,6 +16,7 @@
   gather_facts: True
   roles:
     - aws
+    - enhanced_networking
     - mongo_3_0
     - munin_node
     - role: datadog

playbooks/roles/mongo_3_0/defaults/main.yml

@@ -51,6 +51,13 @@ MONGO_RS_CONFIG:
 # Storage engine options in 3.0: "mmapv1" or "wiredTiger" 
 MONGO_STORAGE_ENGINE: "mmapv1"
 
+# List of dictionaries as described in the mount_ebs role's default
+# for the volumes.
+# Useful if you want to store your mongo data and/or journal on separate
+# disks from the root volume.  By default, they will end up mongo_data_dir
+# on the root disk.
+MONGO_VOLUMES: []
+
 # WiredTiger takes a number of optional configuration settings
 # which can be defined as a yaml structure in your secure configuration.
 MONGO_STORAGE_ENGINE_OPTIONS: !!null

playbooks/roles/mongo_3_0/meta/main.yml

 ---
 dependencies:
   - common
+  - role: mount_ebs
+    volumes: "{{ MONGO_VOLUMES }}"