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Posted to users@tomcat.apache.org by Shaun Qualheim <sh...@qualheim.org> on 2011/02/17 00:17:21 UTC

Tomcat 6.0.20/AJP connector issues - errors in apache log

*Basics:*
Tomcat 6.0.20 (5 instances)
Apache 2.2.13 using mod_proxy_ajp to connect to the tomcat instances
Dell Poweredge 1950 running Fedora Core

We're noticing that we frequently have a buildup in the morning of AJP
errors in our apache error_log along the following lines:

*[Wed Feb 16 04:43:35 2011] [error] ajp_read_header: ajp_ilink_receive
failed
[Wed Feb 16 04:43:35 2011] [error] (120006)APR does not understand this
error code: proxy: read response failed from (null) (127.0.0.1)
[Wed Feb 16 04:45:23 2011] [error] (70007)The timeout specified has expired:
ajp_ilink_receive() can't receive header
[Wed Feb 16 04:45:23 2011] [error] ajp_read_header: ajp_ilink_receive failed
[Wed Feb 16 04:45:23 2011] [error] (120006)APR does not understand this
error code: proxy: read response failed from (null) (127.0.0.1)
[Wed Feb 16 04:45:23 2011] [error] [client hidden] proxy: error processing
end
[Wed Feb 16 04:47:44 2011] [error] (70007)The timeout specified has expired:
ajp_ilink_receive() can't receive header
[Wed Feb 16 04:47:44 2011] [error] ajp_read_header: ajp_ilink_receive failed
[Wed Feb 16 04:47:44 2011] [error] (120006)APR does not understand this
error code: proxy: read response failed from (null) (127.0.0.1)
[Wed Feb 16 04:52:06 2011] [error] (70007)The timeout specified has expired:
ajp_ilink_receive() can't receive header
[Wed Feb 16 04:52:06 2011] [error] ajp_read_header: ajp_ilink_receive failed
[Wed Feb 16 04:52:06 2011] [error] (120006)APR does not understand this
error code: proxy: read response failed from (null) (127.0.0.1)
[Wed Feb 16 04:54:34 2011] [error] (70007)The timeout specified has expired:
ajp_ilink_receive() can't receive header*

I'm trying to get a handle on what's going on here and how to fix it.  I've
not yet found anything in the tomcat logs of concern.

Can anyone give me some idea of what's going on or how to remedy it?  Not
really sure what the next step in troubleshooting is at this point.

Thanks all for your help,
Shaun