On 23.08.2012 09:50, marcobuc wrote:
Hi,
we are experiencing a very similar problem with the difference that we are
using mod_proxy_ajp instead of mod_jk to connect Apache with tomcat. As for
mod_jk, the connection is done to the 8009-jk port opened by a connector
configured in tomcat server.xml file.
<Connector port="8009"
enableLookups="false" redirectPort="8443" protocol="AJP/1.3"
/>
We tried configuring the timeout parameters for mod_proxy_ajp to tell Apache
to drop connection older than 2 minutes, but we see in tomcat manager
application that the jk-8009 connector retains Keepalive connections open
for millions of milliseconds:
K 1783874292 ms ? ? 84.18.132.114 ? ?
Can you see the connections in the output of "netstat -an"?
What is there state there?
I would like to try configuring the ping_mode parameter but I do not know if
this is possible, i.e. if this parameter exists only for mod_jk.
Here an example of configuration we added in httpd.conf file for the
mod_proxy_ajp configuration.
ProxyPass /manager ajp://localhost:8009/manager max=10 retry=10 timeout=30
ttl=120
ProxyPassReverse /manager ajp://localhost:8009/manager
Look for "ping" and "ttl" on
http://httpd.apache.org/docs/2.2/mod/mod_proxy.html
if using 2.2 or
http://httpd.apache.org/docs/2.4/mod/mod_proxy.html
if using httpd 2.4. Note that for 2.4 there was a connection closing bug
which was fixed very recently in 2.4.3.
Regards,
Rainer
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