ASF GitHub Bot commented on CLOUDSTACK-10309:

rafaelweingartner commented on issue #2473: CLOUDSTACK-10309 Add option on if 
to VM HA power-on a OOB-shut-off-VM
URL: https://github.com/apache/cloudstack/pull/2473#issuecomment-372734014
   It is ok the code as is. However, it might have been interesting to see the 
feedback of the author.

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> 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: 4.9.0,
>         Environment: KVM
>            Reporter: Sean Lair
>            Priority: Minor
> 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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