I'm trying to set up a mod_proxy - mongrel combination, but somehow, apache/mod_proxy is unable to access mongrel locally. The following is my configuration for mod_proxy:

ProxyRequests Off
ProxyPreserveHost On

<Location />
        ProxyPass http://localhost:3000/
        ProxyPassReverse http://localhost:3000/
        Order deny,allow
        Allow from all

Mongrel/Rails ist running just fine, because I can access it from my browser, and even with lynx on the server.

However, I get the following error when trying to use the proxy:

[error] [client] Invalid Content-Length

I would appreciate any help :D

PS: Oh, and the server is running Plesk to configure vhosts, if thats important.

1 Answer 1


I kind of solved the problem by starting the mongrel server with

mongrel_rails start -d

instead of

ruby script/server -d

Not sure what the actual problem was, just happy that its working now :)

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