On Fri, Jul 21, 2017 at 12:06 PM, Arman Khalatyan <[email protected]> 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" <[email protected]>: > >> >> >> On Fri, Jul 21, 2017 at 6:07 AM, Arman Khalatyan <[email protected]> >> 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 <[email protected]> >>> wrote: >>> >>>> >>>> >>>> Den 20 juli 2017 13:29 skrev Arman Khalatyan <[email protected]>: >>>> >>>> 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 >>>> [email protected] >>>> http://lists.ovirt.org/mailman/listinfo/users >>>> >>>> >>>> >>> >>> _______________________________________________ >>> Users mailing list >>> [email protected] >>> http://lists.ovirt.org/mailman/listinfo/users >>> >>> >>
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