[Mongrel] Mongrel not starting: `initialize_without_backlog': Cannot assign requested address - bind(2) (Errno::EADDRNOTAVAIL)

Nii Amon Dsane jazzyy at gmail.com
Tue Dec 11 10:19:14 EST 2007

I have a rather strange problem with mongrel and I would be grateful if
anyone could assist me with resolving.

I have an application running mongrel 1.1.1 and rails 1.2.5 with ruby 1.8.6.
It was all working fine and starting as expected. But I did a server reboot
once and mongrel has refused to start up since. I get the following error:

`initialize_without_backlog': Cannot assign requested address - bind(2)
        from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.1/bin/../lib/mongrel/tcphack.rb:12:in
        from /usr/lib/ruby/1.8/drb/drb.rb:865:in `open'
        from /usr/lib/ruby/1.8/drb/drb.rb:865:in `open_server'
        from /usr/lib/ruby/1.8/drb/drb.rb:759:in `open_server'
        from /usr/lib/ruby/1.8/drb/drb.rb:757:in `each'
        from /usr/lib/ruby/1.8/drb/drb.rb:757:in `open_server'
        from /usr/lib/ruby/1.8/drb/drb.rb:1339:in `initialize'
        from /usr/lib/ruby/1.8/drb/drb.rb:1627:in `new'
         ... 31 levels...
        from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.1/bin/../lib/mongrel/command.rb:212:in
        from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.1/bin/mongrel_rails:281
        from /usr/bin/mongrel_rails:16:in `load'
        from /usr/bin/mongrel_rails:16

Initially I though that it was due to the fact that somehow there were
processes that were holding onto the ports so I did a netstat to check for
listening processes. However there were no processes holding onto the

I suspect that it is something that is in the configuration for that
particular application because there are other applications on the server
which are still working fine.

Has anyone else experienced this before and what was the resolution.

Nii Amon
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