Hey all
I am wondering if anyone can help shed light on this. We have
Red Hat Enterprise Linux Server release 6.3
Apache 2.2.15 (Red Hat package)
Tomcat (Apache Tomcat Version 6.0.36)
Apache forwards request via AJP
We seem to encounter frequent crashes that remain unpredictable to me
at the moment. As best as I can determine Tomcat is not processing
these `fast enough` based on the errors in the Apache logs
We keep seeing these errors
[Sun Nov 04 03:16:09 2012] [error] proxy: AJP: failed to make
connection to backend: localhost
[Sun Nov 04 03:16:16 2012] [error] (111)Connection refused: proxy:
AJP: attempt to connect to 127.0.0.1:8009 (localhost) failed
[Sun Nov 04 03:16:16 2012] [error] ap_proxy_connect_backend disabling
worker for (localhost)
[Sun Nov 04 03:16:16 2012] [error] proxy: AJP: failed to make
connection to backend: localhost
Below are what I think are the pertinent parts of the config files
which I will gladly share on request.
<IfModule prefork.c>
StartServers 8
MinSpareServers 5
MaxSpareServers 20
ServerLimit 256
MaxClients 256
MaxRequestsPerChild 4000
</IfModule>
<VirtualHost *:80>
ServerName tld.domain.name
DocumentRoot /path/to/home
ErrorLog /var/log/httpd/error.log
CustomLog /var/log/httpd/access.log combined
ProxyRequests Off
ProxyPass /Shibboleth.sso !
ProxyPass / ajp://localhost:8009/ max=256 retry=60
ProxyPassReverse / ajp://localhost:8009/
</VirtualHost>
<Connector port="8009" protocol="AJP/1.3" redirectPort="8443"
UIEncoding="UTF-8" tomcatAuthentication="false" enableLookups="false"
connectionTimeout="120000" packetSize="22528" maxThreads="256" />
Is there anything there that looks unreasonable? Any recommendations?
My (mis?)reading of the dspace documentation is that mod_proxy_ajp has
the most reliable results. It certainly is that way on all our dev
machines.
regards,
./fxk
--
"Beer busts, beer blasts, keggers, stein hoists, A.A. meetings, beer
nights..." --Homer Simpson
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