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From "Sean Lair (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CLOUDSTACK-10309) VMs with HA enabled, power back on if shutdown from guest OS
Date Wed, 28 Feb 2018 00:14:00 GMT
Sean Lair created CLOUDSTACK-10309:
--------------------------------------

             Summary: VMs with HA enabled, power back on if shutdown from guest OS
                 Key: CLOUDSTACK-10309
                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-10309
             Project: CloudStack
          Issue Type: Improvement
      Security Level: Public (Anyone can view this level - this is the default.)
          Components: Management Server
    Affects Versions: 4.10.0.0, 4.9.0
         Environment: KVM
            Reporter: Sean Lair


When a user shuts down their VM from the guest OS (and VM HA is enabled), the VM just powers
itself back on.  Our environment is on KVM hosts.

CloudStack does not know the difference between a VM failing or being shutdown from within
the guest OS.

This is a major pain point for all our users - especially since they don't pay for VMs when
they are shutoff.  It is not intuitive for end-users to understand why they can't shutdown
VMs from within the guest OS.  Especially when they all come from (non-cloudstack) VMware
and Hyper-V environments where this is not an issue.

However, if a host fails, we need VM HA to still work.

This Issue is being tied to a new PR that creates a configuration option "ha.vm.restart.hostup".  With
this option set to false, if CloudStack sees a VM shutdown out-of-band, +*but the host it
was on is still* *onlin*e+, then it won't power it back on.  The logic is that since the
host is online, it was most likely shutdown from the guest OS.

For when a host actually fails, standard VM HA logic takes over and powers on VMs (with VM
HA enabled) if the host they were on fails.

If that "ha.vm.restart.hostup" option is true (the default to match current functionality),
it works like always, and even in-guest shutdowns of VMs causes CloudStack to power back on
the VM.

 



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