[Linux-cluster] Fencing: Prevent rebooting halted node

[emmanuel segura]

Hello Nicolas

The first i can recommend it's use a quorum disk and for your problem i
know that it's called fencing-loop

you got two choices

1:don't put the daemons cluster at boot time
2:If you use a qdisk you can use clean_start="1" in the fence_daemon tag,
this can be used if you are not using gfs or gfs2 or
<cmantwo_node="1"expected_votes="1"/>



Il giorno 21 marzo 2012 11:43, Nicolas Ecarnot <nicolas at ecarnot.net> ha
scritto:

> Hi,
>
> We are setting up a new cluster and we still have tests and questions.
> At present, our cluster is two nodes only, with a very simple setup.
> fencing is done with fence_ipmilan, and the only action we do is rebooting.
> Today, I tried to completely switch both nodes off, then boot up node 1.
> It perfectly boots up and serves as it should.
> But detecting the missing one, fencing is ran on node 2 and boots it up.
>
> I would like to avoid that, and keep the stopped nodes stopped.
>
> I don't know if there's a way I could improve my cluster.conf to do that?
> Either improve my fencedevice command, but I did not find many more option
> in the fence_ipmilan man page...
> Either there's a way to first do a test (?) before doing any further
> action?
>
> I'd be glad to read your advice.
>
> My setup :
>
> [...]
>
> <clusternodes>
>  <clusternode name="node1" nodeid="1">
>  <fence>
>   <method name="1">
>    <device name="node1_ipmi" action="reboot"/>
>   </method>
>  </fence>
>  </clusternode>
>  <clusternode name="node2" nodeid="2">
>  <fence>
>   <method name="1">
>    <device name="node2_ipmi" action="reboot"/>
>   </method>
>  </fence>
>  </clusternode>
> </clusternodes>
>
> <fencedevices>
>  <fencedevice name="node1_ipmi" agent="fence_ipmilan" ipaddr="c-node1"
> login="alogin" passwd="apwd"/>
>  <fencedevice name="node2_ipmi" agent="fence_ipmilan" ipaddr="c-node2"
> login="alogin" passwd="apwd"/>
> </fencedevices>
>
> [...]
>
> Regards,
>
> --
> Nicolas Ecarnot
>
> --
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> Linux-cluster at redhat.com
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>



-- 
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