Hi, In our Solaris(SunOS5.6) system, I installed the Apache 1.3.27, mod_jk_1.3_no_eapi.so, and 2 instances of Tomcat 4.1.8. The apache will act as front-end and dispatch requests to the 2 instances of Tomcat. There is no error shown when I configure, install and run the servers. I also use the Grinder as stress test tool: http://grinder.sourceforge.net/ I placed a very simple JSP file in the web application root, and wrote a grinder test script which sends 70 requests in very short time. I then noticed there are many errors like following in the mod_jk.log Fri Jan 10 08:45:01 2003] load balancer my.com my.com 2947 200 0.167065 [Fri Jan 10 08:45:01 2003] [jk_ajp_common.c (681)]: ERROR: can't receive the response message from tomcat, network problems or tomcat is down. [Fri Jan 10 08:45:01 2003] [jk_ajp_common.c (1050)]: Error reading reply from tomcat. Tomcat is down or network problems. [Fri Jan 10 08:45:01 2003] [jk_ajp_common.c (1187)]: ERROR: Receiving from tomcat failed, recoverable operation. err=0 [Fri Jan 10 08:45:01 2003] loadbalancer my.com my.com 2947 200 0.117587 This errors shows that the communication between Apache(mod_jk) and Tomcat got trouble randomly. >From my testing, I feel the mod_jk did work, as load balancer, to dispatch requests to multi tomcat instances. I will post the httpd.conf, server.xml, workers.properties files in following posts. Any advice is greatly appreciated!
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