[Users] oVirt with UPS Shutdown Software

[Itamar Heim]

On 08/21/2012 07:01 PM, Omer Frenkel wrote:
>
>
> ----- Original Message -----
>> From: "Neil" <nwilson123 at gmail.com>
>> To: users at ovirt.org
>> Sent: Tuesday, August 21, 2012 6:05:17 PM
>> Subject: [Users] oVirt with UPS Shutdown Software
>>
>> Hi guys,
>>
>> I've looked around briefly and can't seem to find much info on this,
>> so please excuse me if this has already been asked/documented.
>>
>> I have a UPS with SNMP support and I started installing the
>> management
>> software(IPP) that it comes with and then it occurred to me that the
>> shutdown sequence of servers with oVirt 3.1 would be quite critical.
>> Is there any documentation on shut down sequences or does anyone know
>> what the recommended way of handling power failures are?
>>
>> My thinking is that when a power failure is detected by the UPS
>> software running on the ovirt-engine machine, the VM's need to be
>> shutdown gracefully, and then the data center needs to be put into
>> maintenance, before the hosts are eventually shutdown, and then
>> finally the ovirt-engine needs to be halted.
>>
>
> sounds right to me:
> shutdown the vms,
> put data-center to maintenance (actually means put all domains to maintenance - i guess this part is nice to have but not must)
> then put hosts to maintenance (not sure you mentioned that)
> then you can shutdown any server in any order.

why move the DC to maint or the host to maint (unless other hosts are 
not affected by this)?

>
>> Any thoughts or ideas/suggestions on the above, can the ovirt-engine
>> somehow be told to shutdown the VM's and hosts etc?
>>
>
> well writing a script to do that shouldn't be hard using the API,
> but the question how to trigger it? (i'm not familiar with the UPS software capabilities)
>
>> Thank you very much.
>>
>> Regards.
>>
>> Neil Wilson.
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>>
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