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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLOUDSTACK-9458) Some VMs are being stopped when agent is reconnecting
Date Tue, 22 Nov 2016 05:05:58 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-9458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15685711#comment-15685711
] 

ASF GitHub Bot commented on CLOUDSTACK-9458:
--------------------------------------------

Github user abhinandanprateek commented on the issue:

    https://github.com/apache/cloudstack/pull/1640
  
    @marcaurele for a host that is found to be down we go ahead and schedule a restart for
HA enabled VM, this is good.
    
    For the VMs that are not HA enabled they will continue to show as running.  This works
in the scenario where the host finally comes around. What if host is gone for long or forever,
then the VMs will continue to show as running. The user will have to guess that he has to
stop and then start the VM.  Can you check if VMs will be eventually marked down by VM sync
? If that is the case, I think this fix should be good then 
    
    Another suggestion: In the specific case where host drops and then come back in certain
interval. Can we make the parameter that times out to mark a host down as configurable. In
your case you can increase it to several hours and it will not start HA during that time and
host can still connect back ?
    



> Some VMs are being stopped when agent is reconnecting
> -----------------------------------------------------
>
>                 Key: CLOUDSTACK-9458
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9458
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>            Reporter: Marc-Aurèle Brothier
>            Assignee: Marc-Aurèle Brothier
>
> If you loose the communication between the management server and one of the agent for
a few minutes, even though HA mode is not active the HighAvailibilityManager kicks in and
start to schedule vm restart. Those tasks are being inserted as async job in the DB and if
the agent comes back online during the time the jobs are still in the async table, they are
pushed to the agent and shuts down the VMs. Then since HA is not active, the VM are not restarted.
> The expected behavior in my opinion is that the VM should not be restarted at all if
HA mode is not active on them, and let the agent update the VM state with the power report.
> The bug lies in {{HighAvailibilityManagerImpl.scheduleRestartForVmsOnHost(final HostVO
host, boolean investigate)}}, PR will follow.



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