Make sure the journal is owned by mongodb

We mount our journals from a second volume under mongo_data_dir which
means that they stay owned by root and mongo silently fails to start.

playbooks/roles/mongo/defaults/main.yml

@@ -9,6 +9,7 @@ pymongo_version: 2.7.2
 
 mongo_data_dir: "{{ COMMON_DATA_DIR }}/mongo"
 mongo_log_dir: "{{ COMMON_LOG_DIR }}/mongo"
+mongo_journal_dir: "{{ COMMON_DATA_DIR }}/mongo/mongodb/journal"
 mongo_user: mongodb
 
 MONGODB_APT_KEY: "http://docs.mongodb.org/10gen-gpg-key.asc"

playbooks/roles/mongo/tasks/main.yml

@@ -45,6 +45,7 @@
     - "{{ mongo_data_dir }}"
     - "{{ mongo_dbpath }}"
     - "{{ mongo_log_dir }}"
+    - "{{ mongo_journal_dir }}"
 
 - name: stop mongod service
   service: name=mongod state=stopped