Re: [Ganglia-developers] Ganglia not recognizing other nodes?

[Jeff L. <lay...@at...>]

  Crud! My apologies for posting to the wrong list. Please
ignore this on the developers list - I posted it to the users
list. Please respond to that one and not the developers list.

Sorry about that.

Jeff

> Good morning,
>
> Apologies for the simple question. I've got a simple cluster
> with a master node and one compute node. I installed the
> latest Ganglia on the master node (3.4.0) - libganglia,
> ganglia-gmond, ganglia-metad, ganglia-web (3.5.1). I can
> use ganglia-web to "see" the master node with no problems.
>
> I'm using Warewulf for the compute node and I installed
> libganglia and ganglia-gmond in the VNFS and rebooted the
> node. When the node comes back up, I tested ganglia via
> "gstat -all" on the compute node and it seems to work
> correctly.
>
> However, ganglia-web doesn't display anything for the compute
> node even though I've added it to the data_source line in
> gmetad.conf:
>
>
> data_source "my cluster" 10.1.0.250 10.1.0.1:8649 <http://10.1.0.1:8649>
>
>
> I also checked if the master node could access the data from
> the compute node via "gstat -all" and I only get data from the
> master node (i.e. no compute node).
>
> I checked the Ethernet interfaces on both nodes and both
> are listed as MULTICAST. iptabbles on the master node and the
> compute node are off and the services are not running (checked
> that 3 times).
>
> There is a simple Netgear GigE switch between the nodes
> (unmanaged). I don't think that's a problem.
>
> One thing I think is interesting is that the master node has
> eth0 with an IP of 192.168.1.250 which is to the outside world
> and eth1 is 10.1.0.250 which is the cluster network. The compute
> node has eth0 as 10.1.0.1. But when I go to http://localhost/ganglia
> I can only access the master node as 192.168.1.250, not
> 10.1.0.250 (i.e. the list of nodes is only 192.168.1.250).
>
> Otherwise i can login into the compute node, ping it, etc. It works
> fine but somehow I'm missing a configuration piece for ganglia.
>
> TIA!
>
> Jeff
>
>
>
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