Dear Steve, Thanks for the advice. I have done what you sugessted. I have also turned off one of the gmetad daemons so it is now only running on the machine with the web frontend. Now when I fire up the web frontend I get the following message: -
Ganglia cannot find a data source. Is gmond running? I have then on both the machines running gmond only, added this line to the gmond.conf file:- trusted_hosts 172.16.15.5 This being the IP address of the machine running the web frontend. Then restarted the gmond daemon. Then on the machine running the web frontend in gmond.conf I have put this line:- trusted_hosts 172.16.200.29 172.16.11.136 The IP address of the above two machines. Then restarted the gmond daemon. Then also in gmetad.conf the same line. Then restarted the gmtead daemon. I still then get the same message. Ganglia cannot find a data source. Is gmond running? Any suggestions? On Wed, 30 Jul 2003 10:43:20 -0700 steven wagner <[EMAIL PROTECTED]> wrote: > Dave Bradshaw wrote: > > Dear All, > > > > Am I an idiot? > > My rule of thumb is not to ask this sort of question on a list unless > I'm asking something already covered in the docs. There's always a > chance some wisecracker out there will answer it. > > :) > > > Where am I going wrong? > > Different clusters need to transmit on different multicast IPs or ports. > Otherwise, they will all hear each other's metrics. > > So cluster A can use 232.4.6.11:8649, cluster B can use 232.4.6.12:8649, > cluster C can use 232.4.6.12:8648 ... none of them should overlap, in > that case. > > The cluster name has no real effect on the way the monitoring core > gathers metrics. The metadaemon may use it (in comparison to the source > name in /etc/gmetad.conf), but I don't remember what the logic there > looks like. > > All the metadaemon does is query a monitoring core per data_source line > in the config, parse the results, store them as RRDs and merge all its > data sources into a single XML document for the web front-end to query. > > Okay, so it does a lot, but my point is that the problem you're having > is upstream. > > Only one host (or, in very large installs, a couple hosts) need to run > gmetad. The others just need to run the monitoring core. > > Good luck! >
