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https://issues.apache.org/jira/browse/CLOUDSTACK-429?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13487698#comment-13487698
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Roland Kool commented on CLOUDSTACK-429:
----------------------------------------
The documentation also lacks explaining of the agent rebalancing. There is
mention of management server load balancing and port 8250 for management server
is mentioned as well, but a load balanced IP listening on port 8520 cannot be
used from the CloudStack agents.
> Agent rebalancing is broken
> ---------------------------
>
> Key: CLOUDSTACK-429
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-429
> Project: CloudStack
> Issue Type: Bug
> Components: Hypervisor Controller, Management Server
> Affects Versions: pre-4.0.0
> Environment: KVM, Cloudstack 3.0.2
> Reporter: Roland Kool
> Priority: Minor
>
> After setting agent.lb.enabled to true and restarting my management servers,
> the agent rebalancing gets stuck after trying to rebalance the first 16
> machines.
> The error from the management log is:
> 2012-07-05 15:09:43,643 DEBUG [agent.manager.ClusteredAgentManagerImpl]
> (AgentTaskPool-6:null) Rebalancing host id=9
> 2012-07-05 15:09:43,646 WARN [agent.manager.ClusteredAgentManagerImpl]
> (AgentTaskPool-6:null) Unable to rebalance host id=9
> java.lang.ClassCastException: com.cloud.agent.manager.ClusteredAgentAttache
> cannot be cast to com.cloud.agent.manager.ClusteredDirectAgentAttache
> at
> com.cloud.agent.manager.ClusteredAgentManagerImpl.startRebalance(ClusteredAgentManagerImpl.java:1014)
> at
> com.cloud.agent.manager.ClusteredAgentManagerImpl.rebalanceHost(ClusteredAgentManagerImpl.java:905)
> at
> com.cloud.agent.manager.ClusteredAgentManagerImpl$RebalanceTask.run(ClusteredAgentManagerImpl.java:1070)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
> at java.lang.Thread.run(Thread.java:679)
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