2009/5/12 André Warnier <a...@ice-sa.com>: > Michael Biebl wrote: >> >> Hi, >> >> first of all, I'd like to say hi, as I'm new to the list. >> >> I hope you can help me with the following problem I have. >> I run a stock Debian lenny installation with apache 2.2.9 and tomcat >> 6.0.18 >> I'm using mod_proxy to forward the request to tomcat using ajp. The >> apache vhost configuration looks like this: >> >> <VirtualHost *:80> >> >> ... >> ProxyRequests Off >> ProxyVia On >> ProxyPass /t/ ajp://localhost:8009/barcooServer/t/ >> ProxyPass /ws/ ajp://localhost:8009/barcooServer/ws/ >> ProxyPass /reports/ ajp://localhost:8009/barcooServer/reports/ >> ProxyPass / ajp://localhost:8009/barcooWebsite/ >> ProxyPassReverse / ajp://localhost:8009/barcooWebsite/ >> ProxyPassReverseCookiePath /barcooWebsite / >> ... >> >> </VirtualHost> >> >> The apache mpm prefork modules is used with the following configuration. >> <IfModule mpm_prefork_module> >> StartServers 5 >> MinSpareServers 5 >> MaxSpareServers 10 >> MaxClients 200 >> MaxRequestsPerChild 0 >> </IfModule> >> >> The tomcat ajp connector configuration is as simple as >> <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" /> >> >> >> Now, when I get a lot of users access, the http connection via apache >> slows down to a crawl >> and I get a lot of the following messages in the kernel log: >> >> [2350915.113736] __ratelimit: 11 messages suppressed >> [2350915.113742] TCPv6: Possible SYN flooding on port 8009. Dropping >> request. >> >> apache and tomcat itself seem to be idling along, and the load is not >> that high on the machine. >> >> Has anyone an idea what's going on there? >> > It seems to be something entorely outside of Apache and Tomcat. > I'm no specialist, but a few names come to mind : iptables, denyhosts, > SELinux ?
No selinux enabled, no iptables rules loaded, no denyhosts installed. My guess somehow is, that apache is opening too many ajp connections to tomcat... Michael -- Why is it that all of the instruments seeking intelligent life in the universe are pointed away from Earth? --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
