On Wed, 2004-01-28 at 11:51, Adesanya, Adeyemi wrote: > Hi. > > It seems like I have tried just about every option in my gmond configuration > but there appears to be no alternative to multicasts (sigh). I don't want > every monitored node firing packets around the subnets. > > I thought that the list of trusted_hosts specified a group of machines that > would be unicast in addition to the multicast over the local subnet so I > tried to be clever and set mcast_ttl to 0 so the multicast would go no > further than the host machine sending the message but alas, no data was sent > to the trusted_hosts either. > > Any suggestions on where I can go from here?
adesanya- it's easy to tell gmond to be "mute" or "deaf" in the configuration file (/etc/gmond.conf). a "mute" gmond will happily save all the data it receives on a multicast channel but it will never send it's own data. a "deaf" gmond will send all it's data via multicast but will never listen or save data on the multicast channel. some people setup all gmond to be "deaf" accept one (or a few) and then use that gmond to query info about the cluster. if you hate multicast altogether for some reason, you can get around that too. set every gmond that you have to be both "deaf" and "mute". then every gmond running on every host will only know about itself. then use gmetad to pull all the data for your cluster together (gmetad uses a TCP connection to the data port of each gmond). you will need to manually specify every host in your cluster in the /etc/gmetad.conf as a data source. hope this helps. good luck! -matt p.s. the multicast traffic that ganglia generates is really small and only hosts that join the multicast group even process the packets (other hosts filter it out at the link level). a cluster of 128 machines uses less then 56 kb/s .. about the same as a dailup modem. most ganglia messages are 8 bytes in size. > > ---- > Yemi > > > > > ------------------------------------------------------- > The SF.Net email is sponsored by EclipseCon 2004 > Premiere Conference on Open Tools Development and Integration > See the breadth of Eclipse activity. February 3-5 in Anaheim, CA. > http://www.eclipsecon.org/osdn > _______________________________________________ > Ganglia-general mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/ganglia-general -- mobius strippers never show you their backside pgp fingerprint A7C2 3C2F 8445 AD3C 135E F40B 242A 5984 ACBC 91D3
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