[Linux-cluster] quorum disk questions

[Lon Hohberger]

On Tue, 2009-09-15 at 07:57 -0400, James Marcinek wrote:
> Hello all,
> 
> I have several clusters which have been built using system-config-cluster.
> 
> I would like to now add a quorum disk and possibly a multi-cast address to the cluster as well. Can someone tell me how to go about this using system-config-cluster? I've tried looking over the tool but cannot find these fields.

Quorum disks are not always necessary. :)  (I don't know the answer to
your question about how to configure it using s-c-c)


> -With the initial cluster build, do the cluster nodes heartbeat by default over their service IP or is the quorum disk or multi-cast required to do this?

By default, openais uses the IP associated with the name in cluster.conf
for multicast traffic.

> - Do I need to set 'fence levels' - I've defined a fencing device for the cluster? The state of the cluster indicates that they are not fenced (as I would expect because there are no issues)

Yes, at least one per node.

-- Lon