Re: [ovirt-users] workflow suggestion for the creating and destroying the VMs?

2017-07-21 Thread Yaniv Kaul
On Fri, Jul 21, 2017 at 12:06 PM, Arman Khalatyan  wrote:

> thanks,the downscaling is important for me,
>

It really depends on the guest OS cooperation. While off-lining a CPU is
relatively easy, hot-unplugging memory is a bigger challenge for the OS.

 i was testing something like:
>  1) clone from actual vm(super slow,even if it is 20GB OS, needs more
> investigation,nfs is bottle neck)
> 2) start it with dhcp,
> 3) somehow find the ip
> 4) sync parameters between running vm and new vm.
>
> looks that everything might be possible with the python sdk...
>
> are there some examples or tutorials with cloudinitscripts?
>

https://github.com/oVirt/ovirt-engine-sdk/blob/master/sdk/examples/start_vm_with_cloud_init.py

But you could also use Ansible, might be even easier:
http://docs.ansible.com/ansible/latest/ovirt_vms_module.html#examples

Y.


>
> Am 21.07.2017 3:58 nachm. schrieb "Yaniv Kaul" :
>
>>
>>
>> On Fri, Jul 21, 2017 at 6:07 AM, Arman Khalatyan 
>> wrote:
>>
>>> Yes, thanks for mentioning puppet, we have foreman for the bare metal
>>> systems.
>>> I was looking something like preboot hook script, to mount the /dev/sda
>>> and copy some stuff there.
>>> Is it possible to do that with cloud-init/sysprep?
>>>
>>
>> It is.
>>
>> However, I'd like to remind you that we also have some scale-up features
>> you might want to consider - you can hot-add CPU and memory to VMs, which
>> in some workloads (but not all) can be helpful and easier.
>> (Hot-removing though is a bigger challenge.)
>> Y.
>>
>>>
>>> On Thu, Jul 20, 2017 at 1:32 PM, Karli Sjöberg 
>>> wrote:
>>>


 Den 20 juli 2017 13:29 skrev Arman Khalatyan :

 Hi,
 Can some one share an experience with dynamic creating and removing VMs
 based on the load?
 Currently I am just creating with the python SDK a clone of the apache
 worker, are there way to copy some config files to the VM before starting
 it ?


 E.g. Puppet could easily swing that sort of job. If you deploy also
 Foreman, it could automate the entire procedure. Just a suggestion

 /K


 Thanks,
 Arman.

 ___
 Users mailing list
 Users@ovirt.org
 http://lists.ovirt.org/mailman/listinfo/users



>>>
>>> ___
>>> Users mailing list
>>> Users@ovirt.org
>>> http://lists.ovirt.org/mailman/listinfo/users
>>>
>>>
>>
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Re: [ovirt-users] workflow suggestion for the creating and destroying the VMs?

2017-07-21 Thread Arman Khalatyan
thanks,the downscaling is important for me,
 i was testing something like:
 1) clone from actual vm(super slow,even if it is 20GB OS, needs more
investigation,nfs is bottle neck)
2) start it with dhcp,
3) somehow find the ip
4) sync parameters between running vm and new vm.

looks that everything might be possible with the python sdk...

are there some examples or tutorials with cloudinitscripts?

Am 21.07.2017 3:58 nachm. schrieb "Yaniv Kaul" :

>
>
> On Fri, Jul 21, 2017 at 6:07 AM, Arman Khalatyan 
> wrote:
>
>> Yes, thanks for mentioning puppet, we have foreman for the bare metal
>> systems.
>> I was looking something like preboot hook script, to mount the /dev/sda
>> and copy some stuff there.
>> Is it possible to do that with cloud-init/sysprep?
>>
>
> It is.
>
> However, I'd like to remind you that we also have some scale-up features
> you might want to consider - you can hot-add CPU and memory to VMs, which
> in some workloads (but not all) can be helpful and easier.
> (Hot-removing though is a bigger challenge.)
> Y.
>
>>
>> On Thu, Jul 20, 2017 at 1:32 PM, Karli Sjöberg 
>> wrote:
>>
>>>
>>>
>>> Den 20 juli 2017 13:29 skrev Arman Khalatyan :
>>>
>>> Hi,
>>> Can some one share an experience with dynamic creating and removing VMs
>>> based on the load?
>>> Currently I am just creating with the python SDK a clone of the apache
>>> worker, are there way to copy some config files to the VM before starting
>>> it ?
>>>
>>>
>>> E.g. Puppet could easily swing that sort of job. If you deploy also
>>> Foreman, it could automate the entire procedure. Just a suggestion
>>>
>>> /K
>>>
>>>
>>> Thanks,
>>> Arman.
>>>
>>> ___
>>> Users mailing list
>>> Users@ovirt.org
>>> http://lists.ovirt.org/mailman/listinfo/users
>>>
>>>
>>>
>>
>> ___
>> Users mailing list
>> Users@ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/users
>>
>>
>
___
Users mailing list
Users@ovirt.org
http://lists.ovirt.org/mailman/listinfo/users


Re: [ovirt-users] workflow suggestion for the creating and destroying the VMs?

2017-07-21 Thread Yaniv Kaul
On Fri, Jul 21, 2017 at 6:07 AM, Arman Khalatyan  wrote:

> Yes, thanks for mentioning puppet, we have foreman for the bare metal
> systems.
> I was looking something like preboot hook script, to mount the /dev/sda
> and copy some stuff there.
> Is it possible to do that with cloud-init/sysprep?
>

It is.

However, I'd like to remind you that we also have some scale-up features
you might want to consider - you can hot-add CPU and memory to VMs, which
in some workloads (but not all) can be helpful and easier.
(Hot-removing though is a bigger challenge.)
Y.

>
> On Thu, Jul 20, 2017 at 1:32 PM, Karli Sjöberg 
> wrote:
>
>>
>>
>> Den 20 juli 2017 13:29 skrev Arman Khalatyan :
>>
>> Hi,
>> Can some one share an experience with dynamic creating and removing VMs
>> based on the load?
>> Currently I am just creating with the python SDK a clone of the apache
>> worker, are there way to copy some config files to the VM before starting
>> it ?
>>
>>
>> E.g. Puppet could easily swing that sort of job. If you deploy also
>> Foreman, it could automate the entire procedure. Just a suggestion
>>
>> /K
>>
>>
>> Thanks,
>> Arman.
>>
>> ___
>> Users mailing list
>> Users@ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/users
>>
>>
>>
>
> ___
> Users mailing list
> Users@ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
>
___
Users mailing list
Users@ovirt.org
http://lists.ovirt.org/mailman/listinfo/users


Re: [ovirt-users] workflow suggestion for the creating and destroying the VMs?

2017-07-21 Thread Arman Khalatyan
Yes, thanks for mentioning puppet, we have foreman for the bare metal
systems.
I was looking something like preboot hook script, to mount the /dev/sda and
copy some stuff there.
Is it possible to do that with cloud-init/sysprep?

On Thu, Jul 20, 2017 at 1:32 PM, Karli Sjöberg  wrote:

>
>
> Den 20 juli 2017 13:29 skrev Arman Khalatyan :
>
> Hi,
> Can some one share an experience with dynamic creating and removing VMs
> based on the load?
> Currently I am just creating with the python SDK a clone of the apache
> worker, are there way to copy some config files to the VM before starting
> it ?
>
>
> E.g. Puppet could easily swing that sort of job. If you deploy also
> Foreman, it could automate the entire procedure. Just a suggestion
>
> /K
>
>
> Thanks,
> Arman.
>
> ___
> Users mailing list
> Users@ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
>
>
___
Users mailing list
Users@ovirt.org
http://lists.ovirt.org/mailman/listinfo/users


Re: [ovirt-users] workflow suggestion for the creating and destroying the VMs?

2017-07-20 Thread Karli Sjöberg
Den 20 juli 2017 13:29 skrev Arman Khalatyan :Hi,Can some one share an experience with dynamic creating and removing VMs based on the load?Currently I am just creating with the python SDK a clone of the apache worker, are there way to copy some config files to the VM before starting it ?E.g. Puppet could easily swing that sort of job. If you deploy also Foreman, it could automate the entire procedure. Just a suggestion/KThanks,Arman.
___
Users mailing list
Users@ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
___
Users mailing list
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