Issue in connecting "HTTPd" with " Tomcat"

0
votes

Our system are using "mod_proxy_ajp", with Apache 2.0, httpd-2.2.3-43.el5, tomcat 7.0. When we get log on the "httpd ", we have the logs as below:

[Sun Oct 05 12:14:10 2014] [error] (70007)The timeout specified has expired: ajp_ilink_receive() can't receive header

[Sun Oct 05 12:14:10 2014] [error] ajp_read_header: ajp_ilink_receive failed

[Sun Oct 05 12:14:10 2014] [error] (120006)APR does not understand this error code: proxy: read response failed from (null) (xx.xx.xx.xx)

Besides, we don't receive the request message on the tomcat. I think this issue appear due to the Connector between "HTTPd" and "Tomcat". Can you tell me how to fix this issue?

1
apachetomcatmod-jk
First start with trying if you can connect from Apache's server to tomcat's AJP port with something like telnet or netcat. If not you might have a configuration, firewall or router problem. Are you actually connecting to an AJP connector on the tomcat side (not HTTP(s)) – eckes
This system is used for IVR service. And this issue not appear allway, sometime it'll come back to 2-3h later. – Trung Lê
Do the problems correlate with GCs on tomcat or spikes in network error counts? (netstat -S - look for rejects and other errors). Are both systems on the same network segment? – eckes
Sounds like tomcat take too long time to process and nothing returns to proxy_ajp. – Ken Cheung

1 Answers

0
votes

You could give increasing the ProxyTimeout a try.

<VirtualHost ....>
...
ProxyTimeout 900