[Openstack-operators] vms pool

Peter Feiner peter at gridcentric.ca
Mon Oct 28 16:27:48 UTC 2013


Thanks for the plug Jay :-)

Let me explain a tiny bit: 

Step 1. Boot VM
Step 2. Create "live image", which is a snapshot of disk, RAM, etc.
Step 3. Boot from "live image"

Instances booted from the same "live image" share RAM and start in the state they were snapshotted at in Step 2, thus skipping the OS boot and any common application setup you did beforehand.

Therefore, Adrián, VMS addresses your problem not by having a pool of virtual machines ready to run, but by reducing virtual machine creation time (more precisely, reducing the time between requesting a new instance and the time it’s ready to start doing work).

Cheers,
Peter

On Oct 28, 2013, at 11:56 AM, Jay Pipes <jaypipes at gmail.com> wrote:

> Check out GridCentric's stuff:
> 
> http://gridcentric.com/technology/vms/
> 
> Best,
> -jay
> 
> On 10/28/2013 11:53 AM, George Shuklin wrote:
>> Ok, I understand it.
>> 
>> You want them be available for specified tenant or for 'any tenant
>> requested next instance'? For single tenant just create required amount
>> of instances (and keep that amount at certain level - simple 1-2 lines
>> script) , for cross-tenant pool - I think it not clearly possible
>> because of image access rights.
>> 
>> On 28.10.2013 19:13, Adrián Norte wrote:
>>> I think that tenants is the other name of projects.
>>> 
>>> I want to have a X number of VMs always idle waiting to be called
>>> because I don't want to wait for it to start.
>>> 
>>> El 28/10/13 13:08, George Shuklin escribió:
>>>> Yep. They (guests) are called tenants in openstack terminology.
>>>> 
>>>> On 28.10.2013 15:20, Adrián Norte wrote:
>>>>> Hi, is possible to have a pool of guests in openstack?
>>>>> 
>>>>> Thanks.
>>>>> 
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