diff --git a/sharelatex/defaults/main.yml b/sharelatex/defaults/main.yml
index 66ecf0e..bc610f8 100644
--- a/sharelatex/defaults/main.yml
+++ b/sharelatex/defaults/main.yml
@@ -7,11 +7,14 @@ sharelatex_privileged: False
 sharelatex_container_public_port: 5000
 sharelatex_container_local_port: 80
 sharelatex_behind_proxy: 'true'
+sharelatex_hostname: '{{ ansible_fqdn }}'
 sharelatex_local_mongodb: False
 sharelatex_local_redis: False
 sharelatex_local_nginx: False
 
-sharelatex_mongodb_url: 'mongodb://mongo/sharelatex'
+sharelatex_mongodb_host: 'localhost'
+sharelatex_mongodb_db: 'sharelatex'
+sharelatex_mongodb_url: 'mongodb://{{ sharelatex_mongodb_host }}/{{ sharelatex_mongodb_db }}'
 sharelatex_redis_host: localhost
 sharelatex_app_name: Our ShareLaTeX
 sharelatex_site_url: 'http://localhost/sharelatex'