Hi,

On Tue, Jan 29, 2008 at 10:18:09PM +0100, Sander van Vugt wrote:
> Thanks for your reply Dejan,
> > 
> > > I've tried /usr/lib64/heartbeat/hb_delnode
> > > ghostnode to remove it, but it doesn't want to go away. When looking
> > > however with cibadmin -Q in the cib, the node doesn't exist. I can't
> > > oversee what the implications for my cluster really are, but I would be
> > > delighted to get rid of this ghost node anyway.
> > 
> > Not sure what's going on. Can you post the hb_report generated
> > report.
> > 
> Too late, it "automagically" disappeared by itself after creating and
> testing a new resource in the cluster. I don't think that I'll be able
> to find any traces of what exactly the situation was.
> 
> Anyway, I've seen it before when teaching Heartbeat in one of my
> classes. Just by not paying attention suddenly two clusters are present
> on the same network (and yes, shame on me, using the same port as
> well ;-). If that happens, the clusters mix up with each other, which
> is, you CAN see the other nodes when using "crm_mon -1", but if you do a
> dump of the CIB using "cibadmin -Q", the nodes are not listed. BTW:
> crm_mon still shows them, even if the entire other cluster has been
> removed completely from the network. 

BTW, do you also use the same authentication keys?

> Since these kinds of accidents happen too easily in the classroom /
> pilotlabs environments that I do most of my heartbeat work in, it would
> help to know how to get rid of them. 

It'd take some time to reproduce and investigate this.

> > You can definitely get rid of it by restarting the cluster. You
> > can keep the services running by setting the unmanaged mode in
> > the cluster options. Check first if any resources are set to the
> > managed mode---an attribute on the resource takes precedence over
> > global options.
> > 
> I do like this tip about the managed/unmanaged mode.

I also find it a very good feature.

Thanks,

Dejan

> 
> Thanks,
> Sander
> 
> 
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