Removing idle computers

[Emir Imamagic <ei...@srce.hr>]

Hello,

during the very nice VCL Bootcamp you organized in Wroclaw we discussed 
about the option to switch off computers without reservation.

First few words about our infrastructure. It consists of 2 VMWare ESXi 
boxes with 256GB RAM each handling 60-100 VMs. We use iSCSI-based 
storage for datastore and 2 VM stores. Since VMFS3 is clustered this 
works quite well and bootstrap of machines takes less than a minute.

In this setup reload of machines takes longer than bootstrap and 
therefore it would be better to switch off/remove the VM once the 
reservation is done.

Are you planning add such feature in the next version?

Thanks
-- 
Emir Imamagic
Sektor za racunalne sustave
Sveuciliste u Zagrebu, Sveucilisni racunski centar (Srce), www.srce.unizg.hr
Emir.Imamagic@srce.hr, tel: +385 1 616 5809, fax: +385 1 616 5559

Re: Removing idle computers

[Aaron Peeler <aa...@ncsu.edu>]

Hi Emir,

Thanks for the patch and it looks good to reach the goal you wanted.
I'd like to suggest we take it a step further.

We should move this flag to the database, possibly a variable of the
management node table and look at adding additional options like
hibernate and power-down non-vm hw based on current/projected usage.

I've got a jira issue I created awhile back, but I've not made any
progress on it:
https://issues.apache.org/jira/browse/VCL-170

If your interested in assisting me working on it, we could design something out.

Cheers,
Aaron

On Sun, Jan 22, 2012 at 3:31 PM, Emir Imamagic <ei...@srce.hr> wrote:
> Hello,
>
> I attached a simple patch for VCL::reclaim module which deletes VMs after
> the reservation timeouts or get deleted. We tested it on our environment and
> it seems that it works fine. Patch is done against stable version 2.2.1.
>
> As I am not that familiar with VCL internals I would appreciate any feedback
> on this patch.
>
> Thanks
>
>
> On 17.01.2012. 18:29, Emir Imamagic wrote:
>>
>> Hello,
>>
>> during the very nice VCL Bootcamp you organized in Wroclaw we discussed
>> about the option to switch off computers without reservation.
>>
>> First few words about our infrastructure. It consists of 2 VMWare ESXi
>> boxes with 256GB RAM each handling 60-100 VMs. We use iSCSI-based
>> storage for datastore and 2 VM stores. Since VMFS3 is clustered this
>> works quite well and bootstrap of machines takes less than a minute.
>>
>> In this setup reload of machines takes longer than bootstrap and
>> therefore it would be better to switch off/remove the VM once the
>> reservation is done.
>>
>> Are you planning add such feature in the next version?
>>
>> Thanks
>
>
>
> --
> Emir Imamagic
> Sektor za racunalne sustave
> Sveuciliste u Zagrebu, Sveucilisni racunski centar (Srce), www.srce.unizg.hr
> Emir.Imamagic@srce.hr, tel: +385 1 616 5809, fax: +385 1 616 5559



-- 
Aaron Peeler
Program Manager
Virtual Computing Lab
NC State University

All electronic mail messages in connection with State business which
are sent to or received by this account are subject to the NC Public
Records Law and may be disclosed to third parties.

Re: Removing idle computers

[Emir Imamagic <ei...@srce.hr>]

Hello,

I attached a simple patch for VCL::reclaim module which deletes VMs 
after the reservation timeouts or get deleted. We tested it on our 
environment and it seems that it works fine. Patch is done against 
stable version 2.2.1.

As I am not that familiar with VCL internals I would appreciate any 
feedback on this patch.

Thanks

On 17.01.2012. 18:29, Emir Imamagic wrote:
> Hello,
>
> during the very nice VCL Bootcamp you organized in Wroclaw we discussed
> about the option to switch off computers without reservation.
>
> First few words about our infrastructure. It consists of 2 VMWare ESXi
> boxes with 256GB RAM each handling 60-100 VMs. We use iSCSI-based
> storage for datastore and 2 VM stores. Since VMFS3 is clustered this
> works quite well and bootstrap of machines takes less than a minute.
>
> In this setup reload of machines takes longer than bootstrap and
> therefore it would be better to switch off/remove the VM once the
> reservation is done.
>
> Are you planning add such feature in the next version?
>
> Thanks


-- 
Emir Imamagic
Sektor za racunalne sustave
Sveuciliste u Zagrebu, Sveucilisni racunski centar (Srce), www.srce.unizg.hr
Emir.Imamagic@srce.hr, tel: +385 1 616 5809, fax: +385 1 616 5559