Sounds to me like your routing is not properly set although apparently
that can depend on an OS. More than 4 years ago I reported a bug
regarding gmond not honoring mcast_If setting
http://bugzilla.ganglia.info/cgi-bin/bugzilla/show_bug.cgi?id=94
We resolved it by adding a route. It would seem that in unicast mode
this should require no changes. Can you send us what your routing table
looks like ?
U Čet, 24. 06. 2010., u 10:21 +0000, Ronny je napisao/la:
> I am facing the problem, that my gmond udp_send_channels sends via the wrong
> network interface on a multi homed linux machine.
>
> The machines have a front NIC and an backend NIC. Both IPs from the NICs get
> resolved by the name service, but the primary IP's dns name is the system's
> hostname (with an IP address out of 62.48.x.x)
>
> In my clients gmond.conf I have set:
>
> udp_send_channel {
> bind_hostname = yes # Highly recommended, soon to be default.
> # This option tells gmond to use a source address
> # that resolves to the machine's hostname. Without
> # this, the metrics may appear to come from any
> # interface and the DNS names associated with
> # those IPs will be used to create the RRDs.
> host = 10.0.11.16
> port = 8649
> ttl = 1
>
> }
>
> whereby 10.0.11.16 is the backend network.
>
> But this gmond seems to ignore to use 10.0.11.16 and sends via the primary IP
> adress 62.48.x.x to the udp_receive_channel locatet on another host. A
> firewall between send_channel and receiver channel machines using 62.48.x.x
> is blocking that traffic. I can't currently open the firewall.
>
> What should I do to let gmond communicate exclusively via the 10.0.11.x
> network?
>
> I am running ganglia 3.1.7.
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