On Tue, Mar 17, 2009 at 14:56, Tamir Kamara <tamirkam...@gmail.com> wrote: > I don't know too much about multicast... and I'm using the default gmond > conf file.
The default multicast address seems to be 239.2.11.71, so that's the one for your hadoop-metrics.properties. > Wouldn't using the multicast address mean I'll need to specify a different > address for each node so that the data won't get to all nodes running gmond I'm not an expert, either --- I'm using the same multicast address on all nodes in my cluster. On each node, tcpdump shows incoming Ganglia traffic from every other node to the multicast address. It's usually a burst of about 200 UDP packets every 4 seconds or so (for a 6-node cluster), so the traffic overhead should be negligible. C
