[jboss-user] [Installation, Configuration & DEPLOYMENT] - jboss tomcat issue ...?

[itlche]

Hi All,

 

We have a test environment with 2 apaches  and clustered 4 Jboss instances .

 

We have setup load balancing via modjk properties in apache box.

 

Our setup is like each apache is in separate box and 2 Jboss instances in separate box. [Totally 4 linux boxes]

 

During the peak load of users, we get lot of errors in modjk logs like as shown 

  
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  | 
  |   [Tue Feb 17 10:33:27 2009][22106:1241577824] [error] ajp_send_request::jk_ajp_common.c (1359): (snode4) connecting to backend failed. Tomcat is probably not started or is listening on the wrong port (errno=110)     
  | 
  |   


I felt this may be due to insufficient threads dedicated to tomcat container to process the requests from apache modjk to tomcat. But I am not sure whether this is correct or not.

 

Please let me know if any one have encountered such errors ?

 

Configuration details below: 

  
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  | ModJK Properties: [Apache]
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  |  
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  |  
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  |  
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  | worker.list=lb,slb,status
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  |  
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  | worker.node1.port=8009
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  | worker.node1.host=lm014
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  | worker.node1.type=ajp13
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  | worker.node1.lbfactor=1
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  | worker.node1.connect_timeout=10000
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  | worker.node1.prepost_timeout=10000
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  | worker.node1.socket_timeout=10
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  | worker.node1.connection_pool_timeout=600
  | 
  | # worker.node1.connection_pool_size=10 (1)
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  | worker.node1.domain=snode1
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  |  
  | 
  | worker.node2.reference=worker.node1
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  | worker.node2.host=lm014
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  | worker.node2.domain=snode2
  | 
  |  
  | 
  | worker.node3.reference=worker.node1
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  | worker.node3.host=lm015
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  | worker.node3.domain=snode3
  | 
  |  
  | 
  | worker.node4.reference=worker.node1
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  | worker.node4.host=lm015
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  | worker.node4.domain=snode4
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  |  
  | 
  | # Load-balancing behaviour
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  | worker.lb.type=lb
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  | worker.lb.balance_workers=node1,node2,node3,node4
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  | worker.lb.sticky_session=1
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  | # worker.lb.sticky_session_force=1
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  |  
  | 
  |  
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  | worker.snode1.reference=worker.node1
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  | worker.snode1.host= lm014
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  | worker.snode1.port=8010
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  |  
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  | worker.snode2.reference=worker.snode1
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  | worker.snode2.host= lm014
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  |  
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  | worker.snode3.reference=worker.snode1
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  | worker.snode3.host=lm015
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  |  
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  | worker.snode4.reference=worker.snode1
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  | worker.snode4.host= lm015
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  |  
  | 
  | # Load-balancing behaviour
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  | worker.slb.type=lb
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  | worker.slb.balance_workers=snode1,snode2,snode3,snode4
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  | worker.slb.sticky_session=1
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  | # worker.slb.sticky_session_force=1
  | 
  |  
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  | worker.status.type=status
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  |  
  | 
  |  
  |  

 

 

Server.xml [JBOSS Server]

 
  | 
  |    <Connector port="8080" address="${jboss.bind.address}"    
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  |          maxThreads="250" maxHttpHeaderSize="8192"
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  |          emptySessionPath="true" protocol="HTTP/1.1"
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  |          enableLookups="false" redirectPort="8443" acceptCount="100"
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  |          connectionTimeout="20000" disableUploadTimeout="true" />
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  |  
  | 
  |     <!-- Define an AJP 1.3 Connector on port 8009 -->
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  |     <Connector port="8009" address="${jboss.bind.address}" protocol="AJP/1.3"
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  |          emptySessionPath="true" enableLookups="false" redirectPort="443" 
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  |              scheme="http" secure="false" useIPVHosts="true" proxyPort="80" connectionTimeout="600000" />
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  |  
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  |     <!-- Define an AJP 1.3 Connector on port 8010 -->
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  |     <Connector port="8010" address="${jboss.bind.address}" protocol="AJP/1.3"
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  |          emptySessionPath="true" enableLookups="false" redirectPort="80" 
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  |              scheme="https" secure="true" useIPVHosts="true" proxyPort="443" connectionTimeout="600000" />
  | 

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