Kevin,
This is because the gmond running on the headnode for this cluster, that
is the first node in the list in the gmetad.conf, still thinks of that
system as the old name. I would consider restarting gmond on that
cluster's headnodes and see if the change takes.
To do some sanity checking, on the headnode, do an nslookup, dig (never
works for me) or a ping on the IP address of the node in question. I am
assuming in all of this that the IP address of this node never changed.
If you want to keep all the data associated with that host, you will
need to do more work. The instructions above will create new blank rrds
with the new hostname (assuming the instructions work). If that is not
what you want, you need to follow these instructions.
1. stop the gmetad in question: gmetadhost% pkill gmetad
2. stop the gmonds on the headnodes. headnode1% pkill gmond
3. rename the rrd directory for the host in question: gmetadhost% mv
/var/lib/rrds/MYCLUSTERNAME/old.DOMAIN.TLD
/var/lib/rrds/MYCLUSTERNAME/new.DOMAIN.TLD
4. start the gmetad.
5. start the gmonds on the headnodes.
Bernard, the gmond does the reverse lookup of the nodes IP addresses not
the gmetad. Then it caches that name.
Good Luck,
Ian
Kevin Lewandowski wrote:
I've renamed one of the systems in my cluster. but ganglia still
reports the old hostname. Is there anything extra I need to do to make
ganglia show the new hostname in the graphs?
thanks,
Kevin
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