Use the mongo path settings provided by the mongo role.

playbooks/roles/jenkins_worker/defaults/main.yml

@@ -46,10 +46,6 @@ ruby_version: "1.9.3-p374"
 jscover_url: "http://superb-dca2.dl.sourceforge.net/project/jscover/JSCover-1.0.2.zip"
 jscover_version: "1.0.2"
 
-# Mongo config
-mongo_dir: "{{ COMMON_DATA_DIR }}/mongodb"
-mongo_log_dir: "{{ COMMON_DATA_DIR }}/logs/mongodb"
-
 # URL of S3 bucket containing pre-compiled Python packages
 python_pkg_url: "https://s3.amazonaws.com/jenkins.python_pkgs"
 python_download_dir: "{{ COMMON_DATA_DIR }}/python_pkgs"

playbooks/roles/jenkins_worker/templates/mongodb_upstart.j2

 # Ubuntu upstart file at /etc/init/mongodb.conf
 
 pre-start script
-    mkdir -p {{ mongo_dir }}
+    mkdir -p {{ mongo_data_dir }}
     mkdir -p {{ mongo_log_dir }}
 
     touch {{ mongo_log_dir }}/mongodb.log
 
-    chown mongodb:nogroup -R {{ mongo_dir }}
+    chown mongodb:nogroup -R {{ mongo_data_dir }}
     chown mongodb:nogroup -R {{ mongo_log_dir }}
 end script