Enable rack_attack by default.

config/application.rb

@@ -78,7 +78,6 @@ module Gitlab
     #
     # config.relative_url_root = "/gitlab"
 
-    # Uncomment to enable rack attack middleware
-    # config.middleware.use Rack::Attack
+    config.middleware.use Rack::Attack
   end
 end

config/initializers/rack_attack.rb.example

-# To enable rack-attack for your GitLab instance do the following:
-# 1. In config/application.rb find and uncomment the following line:
-# config.middleware.use Rack::Attack
-# 2. Rename this file to rack_attack.rb
-# 3. Review the paths_to_be_protected and add any other path you need protecting
-# 4. Restart GitLab instance
+# 1. Rename this file to rack_attack.rb
+# 2. Review the paths_to_be_protected and add any other path you need protecting
 #
 
 paths_to_be_protected = [

doc/install/installation.md

@@ -227,10 +227,6 @@ You can change `6-2-stable` to `master` if you want the *bleeding edge* version,
     # Copy the example Rack attack config
     sudo -u git -H cp config/initializers/rack_attack.rb.example config/initializers/rack_attack.rb
 
-    # Enable rack attack middleware
-    # Find and uncomment the line 'config.middleware.use Rack::Attack'
-    sudo -u git -H editor config/application.rb
-
     # Configure Git global settings for git user, useful when editing via web
     # Edit user.email according to what is set in gitlab.yml
     sudo -u git -H git config --global user.name "GitLab"