VMware vSphere

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  • 1.  Entering Maintenance Mode does not finish in a adequate time

    Posted Oct 11, 2016 05:01 PM

    Hi all

    I have a 48 Node ESXi V6 U2 Cluster. HA and DRS are enabled.

    When I start putting a host into maintenance mode, all VMs are moved to another Hosts correctly. So after a while the host is empty but still does not enter maintenance mode. It just sits there and "is doing nothing". After a couple of hours the host enters maintenance mode correctly. Sometimes it takes 8 hours, sometimes 24 hours is not enough.

    To work around the Problem while there is no VM on the host and the Task entering MaintMode has not finished yet, I go and disconnect the host from vCenter, move the disconnected host out of the Cluster, cancel the MaintMode Task, reconnect the host (outside from the Cluster) and start entering MaintMode again -> Host is entering Maintenance Mode within ~30s.

    Another Workaround is to disable DRS (not HA) on the Cluster. When DRS is disabled Hosts are entering Maintenance Mode like expected.

    Any ideas?



  • 2.  RE: Entering Maintenance Mode does not finish in a adequate time

    Posted Oct 11, 2016 07:05 PM

    Any hints in any of the ESXi host logs when you initiate the "Enter Maintenance Mode" task? hostd.log would be a good place to start.



  • 3.  RE: Entering Maintenance Mode does not finish in a adequate time
    Best Answer

    Posted Jun 07, 2017 09:51 AM

    FYI: We have never solved this issue but after updating vCenter to V6.5, DRS is working as expected...