# Problem starting mongrel

**URL:** <https://www.ruby-forum.com/t/problem-starting-mongrel/153008>\
**Category:** Deployment\
**Created:** [November 11, 2008, 2:01am UTC](https://www.ruby-forum.com/t/problem-starting-mongrel/153008 "2008-11-11T02:01:33Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![chandu4ruby](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/df788c/32.png) [@chandu4ruby](https://www.ruby-forum.com/u/chandu4ruby)\
**Post date:** [November 11, 2008, 2:01am UTC](https://www.ruby-forum.com/t/problem-starting-mongrel/153008/1 "2008-11-11T02:01:33Z")

</div>

Hi, I am newbie started learning ruby on rails i had an application  
which used to run pretty well latter i upgraded from webbrick to mongrel  
1.1.5 then I am getting the  
foloowing errors and a default application runs on port 3000 by name  
iphone configuration utility  
i am unable to attach the screen shot as it is saying file to large.  
Error which i get in terminal is listed below

=\> Booting Mongrel (use ‘script/server webrick’ to force WEBrick)  
=\> Rails application starting on [http://0.0.0.0:3000](http://0.0.0.0:3000)  
=\> Call with -d to detach  
=\> Ctrl-C to shutdown server  
\*\* Starting Mongrel listening at 0.0.0.0:3000  
Exiting  
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/tcphack.rb:12:in  
`initialize_without_backlog': Address already in use - bind(2) (Errno::EADDRINUSE) from /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/tcphack.rb:12:in `initialize’  
from /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:93:in  
`new' from /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:93:in `initialize’  
from  
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:139:in  
`new' from /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:139:in `listener’  
from /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/mongrel\_rails:99:in  
`cloaker_' from /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:50:in `call’  
from  
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:50:in  
`initialize' ... 14 levels... from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/gems/rails-1.2.6/lib/commands/server.rb:39 from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:27:in `gem\_original\_require’  
from /Library/Ruby/Site/1.8/rubygems/custom\_require.rb:27:in `require’  
from ./script/server:3

Thanks & Regards  
Chandu

---

<div class="post-metadata">

**Author:** ![chandu4ruby](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/df788c/32.png) [@chandu4ruby](https://www.ruby-forum.com/u/chandu4ruby)\
**Post date:** [November 11, 2008, 2:07am UTC](https://www.ruby-forum.com/t/problem-starting-mongrel/153008/2 "2008-11-11T02:07:08Z")

</div>

Chandu,

```
There is another process (webrick? mongrel?) running in your box

```

and listening in the the same port (3000):

```
"Address already in use - bind(2) (Errno::EADDRINUSE)"

```

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Aníbal Rojas

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On Mon, Nov 10, 2008 at 8:31 PM, Chandu C.