Gabriel, when I use the mod_jk everything works fine. The problem arises when using the mod_proxy, so the JkOptions directive can't be used to solve it. However, I thank you for your attention. Ângelo On Dec 7, 2007 12:10 PM, <GKapitany@xxxxxxxxxx> wrote: > Hi, > Do you have a firewall between apache and Tomcat? Looks like the connection > gets closed before Tomcat is able to send the response. > Try JkOptions DisableReuse, this worked for me. > > Gabriel > > > > > "Ângelo Vimeney" > <avimeney@xxxxxxx > om> To > users@xxxxxxxxxxxxxxxx > 06/12/2007 01:27 cc > PM > Subject > Apache, Tomcat and > Please respond to mod_proxy > users@xxxxxxxxxxx > e.org > > > > > > > > > > Hello everybody, > > I'm experiencing problems using the Apache server as a proxy to my > Tomcat server and I will appreciate if somebody could help me. Please, > take my apologies for my poor English and long mail. > > I'm using Apache version 2.2.6 installed on a dedicated HTTP server > machine (running Linux 2.6.9-34.EL). I'm using Tomcat version 6.0.14 > installed on another dedicated server machine (running Linux > 2.6.9-34.EL). I have also a remote browser emulator running on another > dedicated machine. The emulated browsers access an e-commerce site > deployed at the Tomcat server (I'm running the TPC-W benchmark). > > When I simulate 25 browsers accessing Apache, everything works fine. > But when I increase this value to 50, after 5 minutes of simulation, > the following error message is logged at the Apache's error_log file: > > [Tue Dec 04 16:47:17 2007] [notice] Apache/2.2.6 (Unix) configured -- > resuming normal operations > [Tue Dec 04 16:53:08 2007] [error] (70007)The timeout specified has > expired: ajp_ilink_receive() can't receive header > [Tue Dec 04 16:53:08 2007] [error] ajp_read_header: ajp_ilink_receive > failed > [Tue Dec 04 16:53:08 2007] [error] (120006)APR does not understand > this error code: proxy: read response failed from 10.10.20.246:8009 > (compute-0-0) > [Tue Dec 04 16:53:08 2007] [error] (70007)The timeout specified has > expired: ajp_ilink_receive() can't receive header > [Tue Dec 04 16:53:08 2007] [error] ajp_read_header: ajp_ilink_receive > failed > [Tue Dec 04 16:53:08 2007] [error] (120006)APR does not understand > this error code: proxy: read response failed from 10.10.20.246:8009 > (compute-0-0) > ... > > At the Tomcat's catalina.out I found the following log: > > ... > Dec 4, 2007 4:47:49 PM org.apache.catalina.startup.Catalina start > INFO: Server startup in 3549 ms > Dec 4, 2007 4:53:51 PM org.apache.jk.core.MsgContext action > WARNING: Error sending end packet > java.net.SocketException: Broken pipe > at java.net.SocketOutputStream.socketWrite0(Native Method) > at > java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92) > at java.net.SocketOutputStream.write(SocketOutputStream.java:136) > at org.apache.jk.common.ChannelSocket.send(ChannelSocket.java:531) > at > org.apache.jk.common.JkInputStream.endMessage(JkInputStream.java:121) > at org.apache.jk.core.MsgContext.action(MsgContext.java:301) > at org.apache.coyote.Response.action(Response.java:183) > at org.apache.coyote.Response.finish(Response.java:305) > at > org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:195) > at > org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:283) > at > org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:767) > at > org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:697) > > at > org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:889) > > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690) > > at java.lang.Thread.run(Thread.java:595) > Dec 4, 2007 4:53:51 PM org.apache.jk.common.ChannelSocket processConnection > WARNING: processCallbacks status 2 > Dec 4, 2007 4:53:56 PM org.apache.jk.core.MsgContext action > WARNING: Error sending end packet > java.net.SocketException: Broken pipe > at java.net.SocketOutputStream.socketWrite0(Native Method) > at > java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92) > at java.net.SocketOutputStream.write(SocketOutputStream.java:136) > at org.apache.jk.common.ChannelSocket.send(ChannelSocket.java:531) > at > org.apache.jk.common.JkInputStream.endMessage(JkInputStream.java:121) > at org.apache.jk.core.MsgContext.action(MsgContext.java:301) > at org.apache.coyote.Response.action(Response.java:183) > at org.apache.coyote.Response.finish(Response.java:305) > at > org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:195) > at > org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:283) > at > org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:767) > at > org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:697) > > at > org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:889) > > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690) > > at java.lang.Thread.run(Thread.java:595) > ... > > I have successfully build my Apache using: > > configure --enable-modules='proxy proxy_ajp proxy_balancer' > make > make install > > I added to the original httpd.conf the followings configurations: > > ProxyRequests Off > > <Location /tpcw> > ProxyPass balancer://tomcatCluster/tpcw stickysession=JSESSIONID > nofailover=On timeout=60 > ProxyPassReverse balancer://tomcatCluster/tpcw > </Location> > > <Proxy balancer://tomcatCluster> > BalancerMember ajp://compute-0-0:8009 route=tomcat1 > </Proxy> > > ServerLimit 75 > MaxClients 75 > > > In the Tomcat's server.xml, I'm using: > > <Connector port="8009" enableLookups="false" redirectPort="8443" > protocol="AJP/1.3" maxThreads="75" > minSpareThreads="50" > maxSpareThreads="50"/> > > <Engine name="Standalone" defaultHost="localhost" jvmRoute="tomcat1"> > > > After the error, both Apache and Tomcat still working fine, but the > error makes my simulation's results unreliable. Note that, when I use > the mod_jk instead of mod_proxy, no problems arise, not even with more > than 50 emulated browsers. Is that some configuration problem?? Any > suggestions? > > Thanks in advance, > Ângelo Vimeney > > --------------------------------------------------------------------- > The official User-To-User support forum of the Apache HTTP Server Project. > See <URL:http://httpd.apache.org/userslist.html> for more info. > To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx > " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx > For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx > > > > > --------------------------------------------------------------------- > The official User-To-User support forum of the Apache HTTP Server Project. > See <URL:http://httpd.apache.org/userslist.html> for more info. > To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx > " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx > For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx > > --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx
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