On Mon, 29 Dec 2003, Chris Johnson wrote:
> Ok, hi all.
>
> Just got ganglia up. Using it to monitor a cluster. Using
> ganglia 2.5.5.1 on RH7.3. Have the Web interface up. Have gmond
> running on the master with gmetad and one compute engine. The master
> has 2 CPUs the engine has 1. So far so good.
>
> Gstat and the Web interface both agree that the only thing they
> see is the master node. Doesn't see the one compute engine.
>
> Obviously I'm doing something wrong.
>
> Can anyone give me and idea how his mcast_channel thing works and
> what it should be set too? And yeah I read the rather spares
> documentation. Need more.
>
> Any other ideas would be helpful. Thanks much. Happy new year.
>
>
Hm, so I think I figured out that it's not how mcast_channel is
set up. Netstat -a claims that is ESTABLISHED. Which means that
gmetad and the gmond's SHOULD be talking to each other.
Now a trafshow -N port 8649 shows that the master is talking to
itself and the compute egines are talking to each other. The engines
aren't talking to the master and visa versa. That would explain why
the master isn't seeing the nodes; no traffic. Question is, why?
Still no clue.
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Chris Johnson |Internet: [EMAIL PROTECTED]
Systems Administrator |Web: http://www.nmr.mgh.harvard.edu/~johnson
NMR Center |Voice: 617.726.0949
Mass. General Hospital |FAX: 617.726.7422
149 (2301) 13th Street |"The two most abundant things in the Universe
Charlestown, MA., 02129 USA | are hydrogen and stupidity." Harlan Ellison
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