What do you mean by "it works"?
Without fence mechanism, the cluster won't be aware there a node down,
and then you can continue writing modifications in both sides and finish
with a split brain.
El 05/07/14 21:49, Gilberto Nunes escribió:
WOW
Even with just 2 nodes HA works fine!!!!
I have tested some minutes ago...
Is there something improvement on HA Code??
I would like to know...
Thanks
2014-07-05 16:37 GMT-03:00 Gilberto Nunes <[email protected]
<mailto:[email protected]>>:
Hi
Today I have deploy a tree node plus storage scenario in a lab.
First at all, I image that I need configure fence device, as docs
demand...
So, I decide to use a MAnaged Switch (DLikn DES-3028).
But, I realize that even without fence configuratio HA works
properly and NICE, I might add..
Here's the configuration:
<?xml version="1.0"?>
<cluster config_version="18" name="CLUSTER">
<cman expected_votes="3"
keyfile="/var/lib/pve-cluster/corosync.authkey"/>
<quorumd allow_kill="0" interval="3" label="quorum" tko="10"
votes="1">
<heuristic interval="3" program="ping 10.90.90.100 -c1 -w1"
score="1" tko="4"/>
<heuristic interval="3" program="ip addr | grep eth0 | grep -q
UP" score="2" tko="3"/>
</quorumd>
<totem token="54000"/>
<clusternodes>
<clusternode name="pve01" nodeid="1" votes="1">
</clusternode>
<clusternode name="pve02" nodeid="2" votes="1">
</clusternode>
<clusternode name="pve03" nodeid="3" votes="1">
</clusternode>
</clusternodes>
<rm>
<failoverdomains>
<failoverdomain name="serverfailover" ordered="1" restricted="0">
<failoverdomainnode name="pve1" priority="1"/>
<failoverdomainnode name="pve2" priority="2"/>
<failoverdomainnode name="pve3" priority="3"/>
</failoverdomain>
</failoverdomains>
<pvevm autostart="1" vmid="100"/>
</rm>
</cluster>
I always though that I need fence device in order to make HA work...
Thanks
--
Gilberto Ferreira
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Gilberto Ferreira
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