Hello to all, I have a problem with mod_jk (hope this is the right place form my problem).
Used servers and versions: - Apache 2.2.15 (Win32) - mod_jk/1.2.30 - Apache Tomcat/6.0.20 using AJP/1.3 - jdk1.5.0_12 Problem description: I enter the appropriate URL pointing to the balancing web server into the internet explorer address bar (IE on a host different to the machine where web server and tomcats are installed), press enter and get a '503 - service unavailable message' back. I have 2 Tomcat instances, both up and running and http accessible. When (with the same internet explorer window) I first enter the URL of one Tomcat instance directly, get the requested page back, then again try the URL using the web server, it suddenly works. This seems not to be due to caching, because I do not see the failure message in mod_jk.log anymore and I get log information which indicates that everything went fine. When I try to access the web server URL locally from the machine where all servers are installed, it works from the beginning. I tried several configurations and don't know what else to try. The mod_jk status page shows that the tomcat instances were found and that there is no error. mod_jk.log shows those messages when I enter the web servers URL: (I attached 2 full mod_jk.conf to this email with different configs but same result). [Mon Jun 07 18:29:29 2010][1944:408] [debug] jk_uri_worker_map.c (1036): Attempting to map URI '/W********h/' from 4 maps [Mon Jun 07 18:29:29 2010][1944:408] [debug] jk_uri_worker_map.c (850): Attempting to map context URI '/W********h/*=balancer' source 'JkMount' [Mon Jun 07 18:29:29 2010][1944:408] [debug] jk_uri_worker_map.c (863): Found a wildchar match '/W********h/*=balancer' [Mon Jun 07 18:29:29 2010][1944:408] [debug] mod_jk.c (2462): Into handler jakarta-servlet worker=balancer r->proxyreq=0 [Mon Jun 07 18:29:29 2010][1944:408] [debug] jk_worker.c (116): found a worker balancer [Mon Jun 07 18:29:29 2010][1944:408] [debug] jk_worker.c (339): Maintaining worker balancer [Mon Jun 07 18:29:29 2010][1944:408] [debug] jk_ajp_common.c (3197): reached pool min size 32 from 64 cache slots [Mon Jun 07 18:29:29 2010][1944:408] [debug] jk_ajp_common.c (3197): reached pool min size 32 from 64 cache slots [Mon Jun 07 18:29:29 2010][1944:408] [debug] jk_worker.c (293): Found worker type 'lb' [Mon Jun 07 18:29:29 2010][1944:408] [debug] mod_jk.c (978): Service protocol=HTTP/1.0 method=GET ssl=false host=(null) addr=**.*.*.130 name=********* port=8080 auth=(null) user=(null) laddr=**.*.*.21 raddr=**.*.*.130 uri=/Workbench/ [Mon Jun 07 18:29:29 2010][1944:408] [debug] jk_lb_worker.c (1118): service sticky_session=1 id='933BF867682BC5657E3F27E5D17917D7' [Mon Jun 07 18:29:29 2010][1944:408] [debug] jk_lb_worker.c (946): searching worker for partial sessionid 933BF867682BC5657E3F27E5D17917D7 [Mon Jun 07 18:29:29 2010][1944:408] [info] jk_lb_worker.c (985): all workers are in error state for session 933BF867682BC5657E3F27E5D17917D7 [Mon Jun 07 18:29:29 2010][1944:408] [info] jk_lb_worker.c (1448): All tomcat instances failed, no more workers left for recovery (attempt=0, retry=0) [Mon Jun 07 18:29:29 2010][1944:408] [debug] jk_lb_worker.c (946): searching worker for partial sessionid 933BF867682BC5657E3F27E5D17917D7 [Mon Jun 07 18:29:29 2010][1944:408] [info] jk_lb_worker.c (985): all workers are in error state for session 933BF867682BC5657E3F27E5D17917D7 [Mon Jun 07 18:29:29 2010][1944:408] [info] jk_lb_worker.c (1457): All tomcat instances failed, no more workers left (attempt=1, retry=0) [Mon Jun 07 18:29:29 2010][1944:408] [debug] jk_lb_worker.c (1131): retry 1, sleeping for 100 ms before retrying [Mon Jun 07 18:29:29 2010][1944:408] [debug] jk_lb_worker.c (946): searching worker for partial sessionid 933BF867682BC5657E3F27E5D17917D7 [Mon Jun 07 18:29:29 2010][1944:408] [info] jk_lb_worker.c (985): all workers are in error state for session 933BF867682BC5657E3F27E5D17917D7 [Mon Jun 07 18:29:29 2010][1944:408] [info] jk_lb_worker.c (1457): All tomcat instances failed, no more workers left (attempt=0, retry=1) [Mon Jun 07 18:29:29 2010][1944:408] [debug] jk_lb_worker.c (946): searching worker for partial sessionid 933BF867682BC5657E3F27E5D17917D7 [Mon Jun 07 18:29:29 2010][1944:408] [info] jk_lb_worker.c (985): all workers are in error state for session 933BF867682BC5657E3F27E5D17917D7 [Mon Jun 07 18:29:29 2010][1944:408] [info] jk_lb_worker.c (1457): All tomcat instances failed, no more workers left (attempt=1, retry=1) [Mon Jun 07 18:29:29 2010][1944:408] [info] jk_lb_worker.c (1468): All tomcat instances are busy or in error state [Mon Jun 07 18:29:29 2010][1944:408] [error] jk_lb_worker.c (1473): All tomcat instances failed, no more workers left [Mon Jun 07 18:29:29 2010]balancer ********* 0.109377 [Mon Jun 07 18:29:29 2010][1944:408] [info] mod_jk.c (2618): Service error=0 for worker=balancer workers.properties: ------------------------------------------------------------------------- #Define path to JAVA_HOME workers.java_home=C:\Program Files (x86)\Java\jdk1.5.0_12 # Define list of workers that will be used # for mapping requests worker.list=balancer,status # DEFAULT CONFIG FOR WORKERS worker.default.host=localhost worker.default.type=ajp13 worker.default.lbfactor=100 worker.default.cachesize=200 worker.default.connection_pool_size=64 # Define Node1 worker.worker1.reference=worker.default worker.worker1.port=8033 # Define Node2 worker.worker2.reference=worker.default worker.worker2.port=8044 # Load balancing behaviour worker.balancer.type=lb worker.balancer.balance_workers=worker1,worker2 worker.balancer.method=1 worker.balancer.sticky_session=true worker.balancer.sticky_session_force=true # Status worker for managing load balancer worker.status.type=status ------------------------------------------------------------------------- ------------------------------------------------------------------------- mod_jk.conf: ------------------------------------------------------------------------- # Load mod_jk module # Specify the filename of the mod_jk lib LoadModule jk_module modules/mod_jk-1.2.30-httpd-2.2.3.so #Path to workers.properties JkWorkersFile conf/workers.properties #Path to jk logs JkLogFile logs/mod_jk.log #Jlk log level [debug/error/info] JkLogLevel debug #Jk log format JkLogStampFormat "[%a %b %d %H:%M:%S %Y]" #JkRequestLogFormat set the request format JkRequestLogFormat "%w %V %T" # Mount your applications JkMount /W*******h balancer JkMount /W*******h/* balancer # Add the jkstatus mount point JKMount /status/* status # Add shared memory. # This directive is present with 1.2.10 and # later versions of mod_jk, and is needed for # load balancing to work properly JkShmFile logs/jk.shm # Add jkstatus for managing runtime data <Location /jkstatus/> JkMount status Order deny,allow Deny from all Allow from 127.0.0.1 </Location> ------------------------------------------------------------------------- Regards, Daniel Mangold
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