I'm setting up a simple 5 node "cluster" basically just for using a
shared GFS2 filesystem between the nodes.
I'm not really concerned about HA, I just want to be able to have all
the nodes accessing the same block device (iSCSI)
<?xml version="1.0"?>
<cluster alias="pds" config_version="6" name="pds">
<fence_daemon clean_start="0" post_fail_delay="0" post_join_delay="3"/>
<clusternodes>
<clusternode name="pds27.esri.com" nodeid="1" votes="1">
<fence>
<method name="human">
<device name="human" nodename="pds27.esri.com"/>
</method>
</fence>
</clusternode>
<clusternode name="pds28.esri.com" nodeid="2" votes="1">
<fence>
<method name="human">
<device name="human" nodename="pds28.esri.com"/>
</method>
</fence>
</clusternode>
<clusternode name="pds29.esri.com" nodeid="3" votes="1">
<fence>
<method name="human">
<device name="human" nodename="pds29.esri.com"/>
</method>
</fence>
</clusternode>
<clusternode name="pds30.esri.com" nodeid="4" votes="1">
<fence>
<method name="human">
<device name="human" nodename="pds30.esri.com"/>
</method>
</fence>
</clusternode>
<clusternode name="pds30.esri.com" nodeid="5" votes="1">
<fence>
<method name="human">
<device name="human" nodename="pds30.esri.com"/>
</method>
</fence>
</clusternode>
</clusternodes>
<cman expected_votes="1"/>
<fencedevices>
<fencedevice name="human" agent="fence_manual"/>
</fencedevices>
</cluster>
In my thinking this sets up a cluster where only one node need be up to
have quorum, and manual fencing is done for each node.
However, when I start up the first node in the cluster, the fencing
daemon hangs complaining about not being able to fence the other nodes.
I have to run fence_ack_manual -n <nodename> for all the other nodes,
then things start up fine.
Is there a way to make the node just assume all the other nodes are
fine and start up? Am I really running much risk of the GFS2
filesystem failing out?
Thanks,
Ray
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