Peter den Hartog
2010-Apr-07 13:44 UTC
[Xen-users] XCP node fail / network fail of node auto restart vm
Hey and thanks for reading, So i was looking at the following setting: xe vm-param-set uuid=308662ad-7544-e5bc-fea0-a2d2b7e9dea8 ha-always-run=true and i figured that, when the node/host crashed (with like, network failure or something else making the vm unreachable) it would be restarted on another node.. Is this correct, or is this just a setting that after a reboot of the node, the vm gets booted again? Thanks, Peter _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Vern Burke
2010-Apr-07 14:48 UTC
Re: [Xen-users] XCP node fail / network fail of node auto restart vm
Peter:
There''s no HA functionality in XCP (it''s only usable in
the paid for
commercial versions as far as I know). Keep an eye out for my vm and
host watchdogs coming out to do this :).
Vern
On 4/7/2010 9:44 AM, Peter den Hartog wrote:> Hey and thanks for reading,
>
> So i was looking at the following setting: xe vm-param-set
> uuid=308662ad-7544-e5bc-fea0-a2d2b7e9dea8 ha-always-run=true
> and i figured that, when the node/host crashed (with like, network
> failure or something else making the vm unreachable) it would be
> restarted on another node..
>
> Is this correct, or is this just a setting that after a reboot of the
> node, the vm gets booted again?
>
> Thanks,
> Peter
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
_______________________________________________
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Peter den Hartog
2010-Apr-07 15:35 UTC
Re: [Xen-users] XCP node fail / network fail of node auto restart vm
Ok thans for that info, So if i would like to create something small myself i should have some kind of keep alive checker, + a handler that can boots vm''s? Maby with Nagios.. I checked out your tool (the watchdog) but this won''t work if a network cable get''s disconnected from a node right? Peter -----Original Message----- From: Vern Burke <vburke@skow.net> To: xen-users@lists.xensource.com Subject: Re: [Xen-users] XCP node fail / network fail of node auto restart vm Date: Wed, 07 Apr 2010 10:48:36 -0400 Peter: There''s no HA functionality in XCP (it''s only usable in the paid for commercial versions as far as I know). Keep an eye out for my vm and host watchdogs coming out to do this :). Vern On 4/7/2010 9:44 AM, Peter den Hartog wrote:> Hey and thanks for reading, > > So i was looking at the following setting: xe vm-param-set > uuid=308662ad-7544-e5bc-fea0-a2d2b7e9dea8 ha-always-run=true > and i figured that, when the node/host crashed (with like, network > failure or something else making the vm unreachable) it would be > restarted on another node.. > > Is this correct, or is this just a setting that after a reboot of the > node, the vm gets booted again? > > Thanks, > Peter > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Vern Burke
2010-Apr-07 16:03 UTC
Re: [Xen-users] XCP node fail / network fail of node auto restart vm
The vm watchdog is only half the solution for a failed cloud host. It''s not as simple as just restarting the vm''s, you have to make the judgment that the host is gone and it''s not coming back, then reset the power state of all vm''s that were running on that host to halted before you can restart the vm''s. Vern On 4/7/2010 11:35 AM, Peter den Hartog wrote:> Ok thans for that info, > So if i would like to create something small myself i should have some > kind of keep alive checker, + a handler that can boots vm''s? Maby with > Nagios.. > > I checked out your tool (the watchdog) but this won''t work if a > network cable get''s disconnected from a node right? > > Peter > -----Original Message----- > *From*: Vern Burke <vburke@skow.net > <mailto:Vern%20Burke%20%3cvburke@skow.net%3e>> > *To*: xen-users@lists.xensource.com <mailto:xen-users@lists.xensource.com> > *Subject*: Re: [Xen-users] XCP node fail / network fail of node auto > restart vm > *Date*: Wed, 07 Apr 2010 10:48:36 -0400 > > Peter: > There''s no HA functionality in XCP (it''s only usable in the paid > for commercial versions as far as I know). Keep an eye out for my vm > and host watchdogs coming out to do this :). > > Vern > > > On 4/7/2010 9:44 AM, Peter den Hartog wrote: >> Hey and thanks for reading, >> >> So i was looking at the following setting: xe vm-param-set >> uuid=308662ad-7544-e5bc-fea0-a2d2b7e9dea8 ha-always-run=true >> and i figured that, when the node/host crashed (with like, network >> failure or something else making the vm unreachable) it would be >> restarted on another node.. >> >> Is this correct, or is this just a setting that after a reboot of the >> node, the vm gets booted again? >> >> Thanks, >> Peter >> _______________________________________________ >> Xen-users mailing list >> Xen-users@lists.xensource.com <mailto:Xen-users@lists.xensource.com> >> http://lists.xensource.com/xen-users >> > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com <mailto:Xen-users@lists.xensource.com> > http://lists.xensource.com/xen-users > > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users