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 Topic: mod_jk - does not balance after node recovery |
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Qmpeltaty
Joined: 06 Feb 2008
Posts: 182
Location: Poland
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 Posted: Mon 04 Feb '13 16:52 Post subject: mod_jk - does not balance after node recovery |
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Hello
I have Apache (2.4.3-x64) fronted JBoss app server - 4 nodes in total - through mod_jk module (1.2.37). Each JBoss instance works with different application, different context, except node2 and node4 - see configuration below :
JBoss Node1 - /app1
JBoss Node2 - /app2 /app4
JBoss Node4 - /app4
JBoss Node5 - /app5
App4 works on two JBoss nodes - node2 and node4. Node4 is the main node for that application (it takes 95% requests to app4 - worker.node4.lbfactor=19 ) when node2 should take only 5% requests to app4, or all requests to app4 in case node4 fails. It will be changed in the future for 50/50 in normal conditions, but currently i'm testing the config that's why 5% is taken.
Almoust everything works as expected : request to app4 are distributed between nodes properly (95%/5%) when both nodes works properly; all requests are redirected to failover node2 in case of node4 failure.
The only problem i'm facing is that when node4 is recovered after failure, all requests are redirected to node4, looks like after node4 recovery lbfactor settings is ignored and 100% requests goes to node4.
To be honest i don't even know how to force the request distribution again.
worker.properties :
| Code: | worker.list=loadbalancer,node1,node2,node4,node5,status
worker.loadbalancer.type=lb
worker.loadbalancer.balance_workers=node2,node4
worker.loadbalancer.sticky_session=1
worker.loadbalancer.method=R
worker.template.type=ajp13
worker.template.socket_connect_timeout=5000
worker.template.socket_keepalive=true
worker.template.ping_mode=A
worker.template.ping_timeout=10000
worker.template.connection_pool_minsize=0
worker.template.connection_pool_timeout=60
worker.template.reply_timeout=300000
worker.template.recovery_options=3
worker.status.type=status
worker.node1.port=8009
worker.node1.host=127.0.0.1
worker.node1.type=ajp13
worker.node1.lbfactor=1
worker.node1.connect_timeout=15000
worker.node1.socket_timeout=60
worker.node1.connection_pool_timeout=60
worker.node1.socket_keepalive=True
worker.node2.reference=worker.template
worker.node2.port=8109
worker.node2.host=127.0.0.1
worker.node2.lbfactor=1
worker.node2.redirect=node4
worker.node4.reference=worker.template
worker.node4.port=8309
worker.node4.host=127.0.0.1
worker.node4.lbfactor=19
worker.node4.redirect=node2
worker.node5.port=8409
worker.node5.host=127.0.0.1
worker.node5.type=ajp13
worker.node5.lbfactor=1
worker.node5.connect_timeout=15000
worker.node5.socket_timeout=60
worker.node5.connection_pool_timeout=60
worker.node5.socket_keepalive=True
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Qmpeltaty
Joined: 06 Feb 2008
Posts: 182
Location: Poland
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| Posted: Mon 04 Feb '13 16:59 Post subject: Re: mod_jk - does not balance after node recovery |
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| Anyone ? |
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