Hi All We have set up Loadbalacning of Jboss 4.0.3 using Apache2 (2.0.53), mod_jk 1.2.15.
We have currently got 10 Tomcat Servers ( 5 on one server, 3 on another server and 2 on another server) We expect all workers to get the same amount of load (checked using the 'Busy' attribute show in the jkstatus page). But we do not see the Busy sessions distributed evenly during heavy traffic periods to our sites. Instead we see that one Workers Busy goes up to around 20 and is stuck (the worker gets stuck) and the other workers are still having 0 Busy connections. So we, using the jkmanager stop traffic to the worker that is stuck and re-start that tomcat node. Please help. The workers.property file is as follows.... Thanks in Advance. All our servers are RHEL4 with SMP kernel with 4GB RAM, runnning Blackdown JVM 1.4.2 --- Worker.property # # workers.properties # # In Unix, we use forward slashes: ps=/ # list the workers by name #worker.list=jboss1, jboss2, loadbalancer worker.list=loadbalancer, jkstatus # ------------------------ # abc123 1 JBoss server # ------------------------ worker.abc123_1.port=8009 worker.abc123_1.host=192.168.1.1 worker.abc123_1.type=ajp13 # Specify the size of the open connection cache. worker.abc123_1.cachesize=1 worker.abc123_1.domain=www.groupabc123.com # # Specifies the load balance factor when used with # a load balancing worker. # Note: # ----> lbfactor must be > 0 # ----> Low lbfactor means less work done by the worker. worker.abc123_1.lbfactor=100 #worker.abc123_1.redirect=abc123_2 worker.abc123_1.stopped=0 worker.abc123_1.retries=0 worker.abc123_1.socket_timeout=180 # ------------------------ # abc123 2 JBoss server # ------------------------ worker.abc123_2.port=18009 worker.abc123_2.host=192.168.1.1 worker.abc123_2.type=ajp13 # Specify the size of the open connection cache. worker.abc123_2.cachesize=1 worker.abc123_2.domain=www.groupabc123.com # # Specifies the load balance factor when used with # a load balancing worker. # Note: # ----> lbfactor must be > 0 # ----> Low lbfactor means less work done by the worker. worker.abc123_2.lbfactor=100 #worker.abc123_2.redirect=abc123_3 worker.abc123_2.stopped=0 worker.abc123_2.retries=0 worker.abc123_2.socket_timeout=180 # ------------------------ # abc123 3 JBoss server # ------------------------ worker.abc123_3.port=38009 worker.abc123_3.host=192.168.1.1 worker.abc123_3.type=ajp13 # Specify the size of the open connection cache. worker.abc123_3.cachesize=1 worker.abc123_3.domain=www.groupabc123.com # # Specifies the load balance factor when used with # a load balancing worker. # Note: # ----> lbfactor must be > 0 # ----> Low lbfactor means less work done by the worker. worker.abc123_3.lbfactor=100 #worker.abc123_3.redirect=abc123_1 worker.abc123_3.stopped=0 worker.abc123_3.retries=0 worker.abc123_3.socket_timeout=180 # ------------------------ # def456 1 JBoss server # ------------------------ worker.def456_1.port=8009 worker.def456_1.host=192.168.1.2 worker.def456_1.type=ajp13 # Specify the size of the open connection cache. worker.def456_1.cachesize=1 worker.def456_1.domain=www.groupdef456.com # # Specifies the load balance factor when used with # a load balancing worker. # Note: # ----> lbfactor must be > 0 # ----> Low lbfactor means less work done by the worker. worker.def456_1.lbfactor=100 #worker.def456_1.redirect=def456_2 worker.def456_1.stopped=0 worker.def456_1.retries=0 worker.def456_1.socket_timeout=180 # ------------------------ # def456 2 JBoss server # ------------------------ worker.def456_2.port=18009 worker.def456_2.host=192.168.1.2 worker.def456_2.type=ajp13 # Specify the size of the open connection cache. worker.def456_2.cachesize=1 worker.def456_2.domain=www.groupdef456.com # # Specifies the load balance factor when used with # a load balancing worker. # Note: # ----> lbfactor must be > 0 # ----> Low lbfactor means less work done by the worker. worker.def456_2.lbfactor=100 #worker.def456_2.redirect=def456_3 worker.def456_2.stopped=0 worker.def456_2.retries=0 worker.def456_2.socket_timeout=180 # ------------------------ # def456 3 server # ------------------------ worker.def456_3.port=38009 worker.def456_3.host=192.168.1.2 worker.def456_3.type=ajp13 # Specify the size of the open connection cache. worker.def456_3.cachesize=1 worker.def456_3.domain=www.groupdef456.com # # Specifies the load balance factor when used with # a load balancing worker. # Note: # ----> lbfactor must be > 0 # ----> Low lbfactor means less work done by the worker. worker.def456_3.lbfactor=100 #worker.def456_3.redirect=def456_4 worker.def456_3.stopped=0 worker.def456_3.retries=0 worker.def456_3.socket_timeout=180 # ------------------------ # def456 4 JBoss server # ------------------------ worker.def456_4.port=48009 worker.def456_4.host=192.168.1.2 worker.def456_4.type=ajp13 # Specify the size of the open connection cache. worker.def456_4.cachesize=1 worker.def456_4.domain=www.groupdef456.com # # Specifies the load balance factor when used with # a load balancing worker. # Note: # ----> lbfactor must be > 0 # ----> Low lbfactor means less work done by the worker. worker.def456_4.lbfactor=100 #worker.def456_4.redirect=def456_5 worker.def456_4.stopped=0 worker.def456_4.retries=0 worker.def456_4.socket_timeout=180 # ------------------------ # def456 5 JBoss server # ------------------------ worker.def456_5.port=58009 worker.def456_5.host=192.168.1.2 worker.def456_5.type=ajp13 # Specify the size of the open connection cache. worker.def456_5.cachesize=1 worker.def456_5.domain=www.groupghi789.com # # Specifies the load balance factor when used with # a load balancing worker. # Note: # ----> lbfactor must be > 0 # ----> Low lbfactor means less work done by the worker. worker.def456_5.lbfactor=100 #worker.def456_5.redirect=def456_1 worker.def456_5.stopped=0 worker.def456_5.retries=0 worker.def456_5.socket_timeout=180 # ------------------------ # ghi789 1 server # ------------------------ worker.ghi789_1.port=8009 worker.ghi789_1.host=192.168.1.3 worker.ghi789_1.type=ajp13 # Specify the size of the open connection cache. worker.ghi789_1.cachesize=1 worker.ghi789_1.domain=www.groupghi789.com # # Specifies the load balance factor when used with # a load balancing worker. # Note: # ----> lbfactor must be > 0 # ----> Low lbfactor means less work done by the worker. worker.ghi789_1.lbfactor=100 #worker.ghi789_1.redirect=ghi789_2 worker.ghi789_1.stopped=0 worker.ghi789_1.retries=0 worker.ghi789_1.socket_timeout=180 # ------------------------ # ghi789 2 server # ------------------------ worker.ghi789_2.port=18009 worker.ghi789_2.host=192.168.1.3 worker.ghi789_2.type=ajp13 # Specify the size of the open connection cache. worker.ghi789_2.cachesize=1 worker.ghi789_2.domain=www.groupghi789.com # # Specifies the load balance factor when used with # a load balancing worker. # Note: # ----> lbfactor must be > 0 # ----> Low lbfactor means less work done by the worker. worker.ghi789_2.lbfactor=100 #worker.ghi789_2.redirect=ghi789_3 worker.ghi789_2.stopped=0 worker.ghi789_2.retries=0 worker.ghi789_2.socket_timeout=180 # ------------------------ # ghi789 3 server # ------------------------ worker.ghi789_3.port=38009 worker.ghi789_3.host=192.168.1.3 worker.ghi789_3.type=ajp13 # Specify the size of the open connection cache. worker.ghi789_3.cachesize=1 worker.ghi789_3.domain=www.groupghi789.com # # Specifies the load balance factor when used with # a load balancing worker. # Note: # ----> lbfactor must be > 0 # ----> Low lbfactor means less work done by the worker. worker.ghi789_3.lbfactor=100 #worker.ghi789_3.redirect=ghi789_1 worker.ghi789_3.stopped=0 worker.ghi789_3.retries=0 worker.ghi789_3.socket_timeout=180 # ------------------------ # Load Balancer worker # ------------------------ # # The loadbalancer (type lb) worker performs weighted round-robin # load balancing with sticky sessions. # Note: # ----> If a worker dies, the load balancer will check its state # once in a while. Until then all work is redirected to peer # worker. worker.loadbalancer.type=lb worker.loadbalancer.balance_workers=abc123_1, def456_1, ghi789_1, def456_2, ghi789_2, abc123_2, abc123_3, def456_3, ghi789_3,def456_4, def456_5 worker.loadbalancer.local_worker_only=1 worker.sticky_session=1 worker.jkstatus.type=status # # END workers.properties # your advice is urgently required. thanks
