preston-
you will need to have three different web pages for the three different
networks: call them group A, B, and C. i assume that all the machines on
each seperate net can see each other via multicast.
take one machine on each group and start the gmond with "./gmond
--trusted_host <ip of webserver>". to see if you can query each net
group.. run "telnet <ip of gmond for group A> 8649" and you should see
XML... do likewise with group B and C.
now.. you need to modify line 873 "ganglia.php" from
$rval = __ganglia_data( "localhost", 8649, 15);
to
$rval = __ganglia_data( "<ip of gmond for group A>", 8649, 15);
and.. you need to modify line 122 of "ganglia-rrd.pl" from
my $xml_data = IO::Socket::INET->new(
Proto => "tcp",
PeerAddr => "localhost",
PeerPort => "8649",
to
my $xml_data = IO::Socket::INET->new(
Proto => "tcp",
PeerAddr => "<ip of gmond for group A>",
PeerPort => "8649",
etc etc for B and C group.
you also need to make sure that each instance (there will be three) of
ganglia-rrd.pl has a different rrd directory specified...
see lines 4-7 of ganglia-rrd.pl.
there is a new web interface coming soon which will make this complication
disappear.
good luck! let me know how it goes.
-matt
Mar 18, Preston Smith wrote forth saying...
> I'm using ganglia for monitoring our general-use network, rather
> than a cluster. Our environment is set up using 3 physical networks,
> which our servers are spread around on.
>
> Let's say our webserver, the one running ganglia-rrds.pl, is on net #1.
> Server X is on net #3.
>
> All of my systems sitting on net #1 show up fine in the php web interface,
> but I can't get the system on net #3 to let the other systems know about it.
>
> I've tried using various combinations of --trusted_host to get
> 'Server X' to tell the webserver's gmond what it needs to, but all to no
> avail.
>
> Some systems are multi-homed on all three networks, and I've tried various
> combinations of --xml_port, --mcast_if, and --mcast_port.
>
> Is there a good way to do this? I suspect I'm having some kind of brain
> block and either misunderstanding how to use --trusted_host, or just
> overlooking something obvious.
>
> Additionally, is it feasible to add an option to have gmond listen to
> port 8649 on all interfaces?
>
>
