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Is it possible to prevent to specific Vms from sharing the same node? Say =
for instance if I had a pair of mysql servers, and I wanted to ensure that =
they never lived on the same host (i.e., to prevent them from both going do=
wn if the host node ever had some catastrophic event) ?
Thanks,
jonathan
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<div <div>Is it possible to prevent
to specific Vms from sharing the same node? =
Say for instance if I had a pair of mysql servers, and I wanted to en=
sure that they never lived on the same host (i.e., to prevent them from bot=
h going down if the host node ever had
some catastrophic event) ?</div
</div </div <div><br
</div <div>Thanks,</div <div>jonathan</div
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7:06 a.m.
yes.
you can pin a vm to a host so that it will only run on that host and not
migrate or only migrate if command is sent by administrator.
edit a vm or create a new one and look at the hosts section.
On 11/20/2012 03:50 PM, Jonathan Horne wrote:
Is it possible to prevent to specific Vms from sharing the same
node?
Say for instance if I had a pair of mysql servers, and I wanted to
ensure that they never lived on the same host (i.e., to prevent them
from both going down if the host node ever had some catastrophic event) ?
Thanks,
jonathan
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Dafna Ron
3:58 p.m.
On 11/20/2012 04:06 PM, Dafna Ron wrote:
yes.
you can pin a vm to a host so that it will only run on that host and not
migrate or only migrate if command is sent by administrator.
edit a vm or create a new one and look at the hosts section.
On 11/20/2012 03:50 PM, Jonathan Horne wrote:
> Is it possible to prevent to specific Vms from sharing the same node?
> Say for instance if I had a pair of mysql servers, and I wanted to
> ensure that they never lived on the same host (i.e., to prevent them
> from both going down if the host node ever had some catastrophic event) ?
>
another approach would be to put the two nodes in separate clusters
(could be in same DC).
the tag name for what you want is "negative affinity" in scheduling,
which we still need to get to (or you could do yourself, once we have a
pluggable scheduling api.
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Dafna Ron -
Itamar Heim -
Jonathan Horne