Update database setup instructions to be more consistent

doc/install/databases.md

-# Databases:
+# Setup Database
 
-GitLab use MySQL as default database but you are free to use PostgreSQL.
+GitLab supports the following databases:
+
+* MySQL (preferred)
+* PostgreSQL
 
 
 ## MySQL
 
+    # Install the database packages
     sudo apt-get install -y mysql-server mysql-client libmysqlclient-dev
 
+    # Install only the necessary gems
+    sudo -u gitlab -H bundle install --deployment --without development test postgres 
+
     # Login to MySQL
     $ mysql -u root -p
 
+    # Create a user for GitLab. (change $password to a real password)
+    mysql> CREATE USER 'gitlab'@'localhost' IDENTIFIED BY '$password';
+
     # Create the GitLab production database
     mysql> CREATE DATABASE IF NOT EXISTS `gitlabhq_production` DEFAULT CHARACTER SET `utf8` COLLATE `utf8_unicode_ci`;
 
-    # Create the MySQL User change $password to a real password
-    mysql> CREATE USER 'gitlab'@'localhost' IDENTIFIED BY '$password';
-
-    # Grant proper permissions to the MySQL User
+    # Grant the GitLab user necessary permissopns on the table.
     mysql> GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, INDEX, ALTER ON `gitlabhq_production`.* TO 'gitlab'@'localhost';
 
+    # Quit the database session
+    mysql> \q
+
+    # Try connecting to the new database with the new user
+    sudo -u gitlab -H mysql -u gitlab -p -D gitlabhq_production
 
 ## PostgreSQL
 
+    # Install the database packages
     sudo apt-get install -y postgresql-9.1 postgresql-server-dev-9.1
 
-    # Connect to database server
+    # Install only the necessary gems
+    sudo -u gitlab -H bundle install --deployment --without development test mysql
+
+    # Login to PostgreSQL
     sudo -u postgres psql -d template1
 
-    # Add a user called gitlab. Change $password to a real password
+    # Create a user for GitLab. (change $password to a real password)
     template1=# CREATE USER gitlab WITH PASSWORD '$password';
 
     # Create the GitLab production database & grant all privileges on database
     template1=# CREATE DATABASE gitlabhq_production OWNER gitlab;
 
-    # Quit from PostgreSQL server
+    # Quit the database session
     template1=# \q
 
-    # Try connect to new database
-    sudo -u gitlab psql -d gitlabhq_production
+    # Try connecting to the new database with the new user
+    sudo -u gitlab -H psql -d gitlabhq_production
 
 
 
-#### Select the database you want to use
+# Configure GitLab
 
     # Mysql
     sudo -u gitlab cp config/database.yml.mysql config/database.yml
@@ -49,12 +65,4 @@ GitLab use MySQL as default database but you are free to use PostgreSQL.
     # PostgreSQL
     sudo -u gitlab cp config/database.yml.postgresql config/database.yml
 
-    # make sure to update username/password in config/database.yml
-
-#### Install gems 
-
-    # mysql
-    sudo -u gitlab -H bundle install --without development test postgres  --deployment
-
-    # or postgres
-    sudo -u gitlab -H bundle install --without development test mysql --deployment
+Make sure to update username/password in config/database.yml.

doc/install/installation.md

@@ -122,21 +122,9 @@ Check the [Trouble Shooting Guide](https://github.com/gitlabhq/gitlab-public-wik
 and ensure you have followed all of the above steps carefully.
 
 
-# 5. Mysql database
+# 5. Database
 
-    sudo apt-get install -y mysql-server mysql-client libmysqlclient-dev
-
-    # Login to MySQL
-    $ mysql -u root -p
-
-    # Create the GitLab production database
-    mysql> CREATE DATABASE IF NOT EXISTS `gitlabhq_production` DEFAULT CHARACTER SET `utf8` COLLATE `utf8_unicode_ci`;
-
-    # Create the MySQL User change $password to a real password
-    mysql> CREATE USER 'gitlab'@'localhost' IDENTIFIED BY '$password';
-
-    # Grant proper permissions to the MySQL User
-    mysql> GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, INDEX, ALTER ON `gitlabhq_production`.* TO 'gitlab'@'localhost';
+See doc/install/databases.md
 
 
 # 6. GitLab
@@ -162,12 +150,6 @@ and ensure you have followed all of the above steps carefully.
     #
     sudo -u gitlab cp config/gitlab.yml.example config/gitlab.yml
 
-    # Copy mysql db config
-    #
-    # make sure to update username/password in config/database.yml
-    #
-    sudo -u gitlab cp config/database.yml.mysql config/database.yml
-
     # Copy unicorn config
     #
     sudo -u gitlab cp config/unicorn.rb.example config/unicorn.rb
@@ -269,8 +251,6 @@ You can login via web using admin generated with setup:
 
 # Advanced setup tips:
 
-_Checkout databases.md for PostgreSQL_
-
 ## Customizing Resque's Redis connection
 
 If you'd like Resque to connect to a Redis server on a non-standard port or on