# Mongrel Server error - newbie question

**URL:** <https://www.ruby-forum.com/t/mongrel-server-error-newbie-question/172338>\
**Category:** Rails\
**Created:** [July 19, 2009, 10:00pm UTC](https://www.ruby-forum.com/t/mongrel-server-error-newbie-question/172338 "2009-07-19T22:00:01Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![koko](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/ee59a6/32.png) [@koko](https://www.ruby-forum.com/u/koko)\
**Post date:** [July 19, 2009, 10:00pm UTC](https://www.ruby-forum.com/t/mongrel-server-error-newbie-question/172338/1 "2009-07-19T22:00:01Z")

</div>

Dear All,

## I am very new to RoR. I have got the following error after Chnaging mysql database.yml and restart the Server.

rails employee

rails -d mysql employee

and insert Username & Password in the database.yml

and I restart the server.

- 

=\> Booting Mongrel  
=\> Rails 2.3.2 application starting on [http://0.0.0.0:3000](http://0.0.0.0:3000)  
/usr/local/lib/ruby/1.8/yaml.rb:133:in `load': syntax error on line 24, col 2: ` host: localhost’ (ArgumentError)  
from /usr/local/lib/ruby/1.8/yaml.rb:133:in `load' from /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.2/lib/initializer.rb: 880:in `database\_configuration’  
from /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.2/lib/initializer.rb:  
416:in `initialize_database' from /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.2/lib/initializer.rb: 141:in `process’  
from /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.2/lib/initializer.rb:  
113:in `send' from /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.2/lib/initializer.rb: 113:in `run’  
from /Users/khaipi/Documents/rails/employee/config/environment.rb:9  
from /usr/local/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:  
31:in `gem_original_require' from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb: 31:in `require’  
from /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/  
active\_support/dependencies.rb:156:in `require' from /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/ active_support/dependencies.rb:521:in `new\_constants\_in’  
from /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/  
active\_support/dependencies.rb:156:in `require' from /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.2/lib/commands/ server.rb:84 from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb: 31:in `gem\_original\_require’  
from /usr/local/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:  
31:in `require’  
from script/server:3

* * *

What did I do wrong here?

Many thanks in advance,

nuam.

---

<div class="post-metadata">

**Author:** ![koko](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/ee59a6/32.png) [@koko](https://www.ruby-forum.com/u/koko)\
**Post date:** [July 20, 2009, 5:21pm UTC](https://www.ruby-forum.com/t/mongrel-server-error-newbie-question/172338/2 "2009-07-20T17:21:47Z")

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I was able able solve the problem …