didier- i need to add a section in the documentation talking about this since it seems to be a common question.
when you use... mcast_if eth1 .. in /etc/gmond.conf that tells gmond to send it data out the eth1 network interface but that doesn't necessarily mean that the source address of the packets will match the eth1 interface. to make sure that data sent out eth1 has the correct source address run the following... % route add -host 239.2.11.71 dev eth1 ... before starting gmond. that should do the trick for you. please let me know if this fixes your problem. good luck -matt Today, didier wrote forth saying... > > I have seen some post related to some issues > with gmond + multicast running on a dual nic > frontend. > > Currently I am experiencing a weird behavior > > I have the following setup: > > ----------------------- > | web server + gmetad | > ----------------------- > | > | > | > ---------------------- > | eth0 A.B.C.112 | > | | > | Frontend + gmond | > | | > | eth1 192.168.100.1 | > ---------------------- > | > | > > 26 nodes each > gmond > > In the frontend /etc/gmond.conf I have the > following statement: mcast_if eth1 > > The 26 nodes are correctly reported. > > However the Frontend is never reported. > > I am running iptables on the Frontend, and I am seing > things like: > > INPUT packet died: IN=eth1 OUT= MAC= SRC=A.B.C.112 DST=239.2.11.71 > LEN=36 TOS=0x00 PREC=0x00 TTL=1 ID=53740 DF PROTO=UDP SPT=41608 DPT=8649 > LEN=16 > > I would have expected the source to be 192.168.100.1 with mcast_if eth1 > > Any idea ? > > Thanks - Didier. > > > > > ------------------------------------------------------- > This sf.net email is sponsored by: DEDICATED SERVERS only $89! > Linux or FreeBSD, FREE setup, FAST network. Get your own server > today at http://www.ServePath.com/indexfm.htm > _______________________________________________ > Ganglia-general mailing list > Ganglia-general@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/ganglia-general >
