Re: [ovirt-users] Live migration of VM(0 downtime) while Hypervisor goes down in ovirt

[Luca 'remix_tj' Lorenzetto]

What you're looking at is called fault tolerance in other hypervisors.

As far as i know, ovirt doesn't implement such solution.

But if your system doesn't support failure recovery done by high
availability options, you should take in account to revise your application
architecture if you want to keep running on ovirt.

Luca

Il 10 feb 2018 8:31 AM, "Ranjith P"  ha scritto:

Hi,

>>Who's shutting down the hypervisor? (Or perhaps it is shutdown
externally, due to overheating or otherwise?)

We need a continuous availability of VM's in our production setup. If the
hypervisor goes down due to any hardware failure or work load then VM's
above hypervisor will reboot and started on available hypervisors. This is
normally happening but it disrupting VM's. Can you suggest a solution in
this case? Can we achieve this challenge using glusterfs?

Thanks & Regards
Ranjith

Sent from Yahoo Mail on Android


On Sat, Feb 10, 2018 at 2:07 AM, Yaniv Kaul
 wrote:


On Fri, Feb 9, 2018 at 9:25 PM, ranjithsp...@yahoo.com <
ranjithsp...@yahoo.com> wrote:

Hi,
Anyone can suggest how to setup VM Live migration (without restart vm)
while Hypervisor goes down in ovirt?


I think there are two parts to achieving this:
1. Have a script that migrates VMs off a specific host. This should be easy
to write using the Python/Ruby/Java SDK, Ansible or using REST directly.
2. Having this script run as a service when a host shuts down, in the right
order - well before libvirt and VDSM shut down, and would be fast enough
not to be terminated by systemd.
This is a bit more challenging.

Who's shutting down the hypervisor? (Or perhaps it is shutdown externally,
due to overheating or otherwise?)
Y.


Using glusterfs is it possible? Then how?

Thanks & Regards
Ranjith

Sent from Yahoo Mail on Android


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Re: [ovirt-users] Live migration of VM(0 downtime) while Hypervisor goes down in ovirt

[Ranjith P]

Hi,
>>Who's shutting down the hypervisor? (Or perhaps it is shutdown externally, 
>>due to overheating or otherwise?)
We need a continuous availability of VM's in our production setup. If the 
hypervisor goes down due to any hardware failure or work load then VM's above 
hypervisor will reboot and started on available hypervisors. This is normally 
happening but it disrupting VM's. Can you suggest a solution in this case? Can 
we achieve this challenge using glusterfs?
Thanks & RegardsRanjith

Sent from Yahoo Mail on Android 
 
  On Sat, Feb 10, 2018 at 2:07 AM, Yaniv Kaul wrote:   

On Fri, Feb 9, 2018 at 9:25 PM, ranjithsp...@yahoo.com  
wrote:

Hi,Anyone can suggest how to setup VM Live migration (without restart vm) while 
Hypervisor goes down in ovirt?

I think there are two parts to achieving this:1. Have a script that migrates 
VMs off a specific host. This should be easy to write using the 
Python/Ruby/Java SDK, Ansible or using REST directly.2. Having this script run 
as a service when a host shuts down, in the right order - well before libvirt 
and VDSM shut down, and would be fast enough not to be terminated by 
systemd.This is a bit more challenging.
Who's shutting down the hypervisor? (Or perhaps it is shutdown externally, due 
to overheating or otherwise?)Y. 
Using glusterfs is it possible? Then how?
Thanks & RegardsRanjith

Sent from Yahoo Mail on Android
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http://lists.ovirt.org/ mailman/listinfo/users



  
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Re: [ovirt-users] Live migration of VM(0 downtime) while Hypervisor goes down in ovirt

[Christopher Cox]

On 02/09/2018 01:25 PM, ranjithsp...@yahoo.com wrote:

Hi,
Anyone can suggest how to setup VM Live migration (without restart vm) 
while Hypervisor goes down in ovirt?

Using glusterfs is it possible? Then how?


Can't speak for glusterfs specifically, but this is how things work.

All nodes know about the storage domains... this is so a different node 
can "take over" in a live migration.  Not necessarily designed for a 
node to go down hard (but let's say the node has problems communicating, 
it might get fenced and live migration begins, and of course, the usual 
maintenance mode would force a live migration) for hard down 
scenarios you might want to look a HA for the VMs.


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Re: [ovirt-users] Live migration of VM(0 downtime) while Hypervisor goes down in ovirt

[Yaniv Kaul]

On Fri, Feb 9, 2018 at 9:25 PM, ranjithsp...@yahoo.com <
ranjithsp...@yahoo.com> wrote:

> Hi,
> Anyone can suggest how to setup VM Live migration (without restart vm)
> while Hypervisor goes down in ovirt?
>

I think there are two parts to achieving this:
1. Have a script that migrates VMs off a specific host. This should be easy
to write using the Python/Ruby/Java SDK, Ansible or using REST directly.
2. Having this script run as a service when a host shuts down, in the right
order - well before libvirt and VDSM shut down, and would be fast enough
not to be terminated by systemd.
This is a bit more challenging.

Who's shutting down the hypervisor? (Or perhaps it is shutdown externally,
due to overheating or otherwise?)
Y.


> Using glusterfs is it possible? Then how?
>
> Thanks & Regards
> Ranjith
>
> Sent from Yahoo Mail on Android
> 
>
> ___
> Users mailing list
> Users@ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
>
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