1:29 a.m.
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Dňa 17.04.2015 o 02:01 Ron V napísal(a):
Hello,
I am testing guest VM migration in the event of a host crash, and I am
surprised to see that guests that are selected to be highly available
do not migrate when a host is forcibly turned off.
I have a 2 host cluster using iSCSI for storage, and when one of the
hosts, either the SPM or normal, is forcibly turned off, although the
engine sees the host as non-responsive, the VMs that were running on
it remain on that crashed host, and a question mark (?) appears next
to them. Other than checking "highly available", is there another
step that needs to be made for a VM to be restarted on a working host
should the host it is running on fail?
Migration does not work when the host crashes. If you have fencing
enabled, the engine can restart the dead host and start the vms on
another host. This works for us. But you have to have power management
for the hosts.
--
Ernest Beinrohr, AXON PRO
Ing <http://www.beinrohr.sk/ing.php>;, RHCE
<http://www.beinrohr.sk/rhce.php>;, RHCVA
<http://www.beinrohr.sk/rhce.php>;, LPIC
<http://www.beinrohr.sk/lpic.php>;, VCA <http://www.beinrohr.sk/vca.php>;,
+421-2-62410360 +421-903-482603
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<div class="moz-cite-prefix">Dňa 17.04.2015 o 02:01 Ron V
napísal(a):<br>
</div>
<blockquote cite="mid:55304D62.7040905@abacom.com"
type="cite">Hello,
<br>
<br>
I am testing guest VM migration in the event of a host crash, and
I am surprised to see that guests that are selected to be highly
available do not migrate when a host is forcibly turned off.
<br>
<br>
I have a 2 host cluster using iSCSI for storage, and when one of
the hosts, either the SPM or normal, is forcibly turned off,
although the engine sees the host as non-responsive, the VMs that
were running on it remain on that crashed host, and a question
mark (?) appears next to them. Other than checking "highly
available", is there another step that needs to be made for a VM
to be restarted on a working host should the host it is running on
fail?
<br>
<br>
</blockquote>
Migration does not work when the host crashes. If you have fencing
enabled, the engine can restart the dead host and start the vms on
another host. This works for us. But you have to have power
management for the hosts.<br>
<div class="moz-signature">-- <br>
<div id="oernii_footer" style="color: gray;">
<span style="font-family: Lucida Console, Luxi Mono, Courier,
monospace; font-size: 90%;">
Ernest Beinrohr, AXON PRO<br>
<a style="text-decoration: none; color: gray;"
href="http://www.beinrohr.sk/ing.php">Ing</a>, <a
style="text-decoration: none; color: gray;"
href="http://www.beinrohr.sk/rhce.php">RHCE</a>, <a
style="text-decoration: none; color: gray;"
href="http://www.beinrohr.sk/rhce.php">RHCVA</a>, <a
style="text-decoration: none; color: gray;"
href="http://www.beinrohr.sk/lpic.php">LPIC</a>, <a
style="text-decoration: none; color: gray;"
href="http://www.beinrohr.sk/vca.php">VCA</a>, <br>
+421-2-62410360 +421-903-482603
<br>
</span> </div>
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