Use peer-based authentication for PostgreSQL

config/database.yml.postgresql

@@ -6,8 +6,8 @@ production:
   encoding: unicode
   database: gitlabhq_production
   pool: 10
-  username: git
-  password:
+  # username: git
+  # password:
   # host: localhost
   # port: 5432 
   # socket: /tmp/postgresql.sock

doc/install/databases.md

@@ -58,7 +58,7 @@ GitLab supports the following databases:
     sudo -u postgres psql -d template1
 
     # Create a user for GitLab. (change $password to a real password)
-    template1=# CREATE USER git WITH PASSWORD '$password';
+    template1=# CREATE USER git;
 
     # Create the GitLab production database & grant all privileges on database
     template1=# CREATE DATABASE gitlabhq_production OWNER git;

doc/install/installation.md

@@ -216,17 +216,18 @@ Make sure to edit both `gitlab.yml` and `unicorn.rb` to match your setup.
     # Mysql
     sudo -u git cp config/database.yml.mysql config/database.yml
 
-    or
-
-    # PostgreSQL
-    sudo -u git cp config/database.yml.postgresql config/database.yml
-
     # Make sure to update username/password in config/database.yml.
     # You only need to adapt the production settings (first part).
     # If you followed the database guide then please do as follows:
     # Change 'secure password' with the value you have given to $password
     # You can keep the double quotes around the password
     sudo -u git -H editor config/database.yml
+
+    or
+
+    # PostgreSQL
+    sudo -u git cp config/database.yml.postgresql config/database.yml
+
     
     # Make config/database.yml readable to git only
     sudo -u git -H chmod o-rwx config/database.yml