Do you want the head node to be reported as part of the same cluster as the
compute nodes, or as a separate cluster? I think you're saying you want the
head node to report as part of the same cluster, in which case you just need to
add a udp_send_channel to the head node's gmond.conf.
So, head is reporting to itself and will show up just like any other cluster
node when gmetad polls for data.
upd_send_channel {
host = head
port = 8649
}
alex
On Mar 3, 2011, at 2:08 PM, Jeffrey L Moon wrote:
> I am trying to configure ganglia to monitor a cluster. My initial thoughts
> were to have a gmond running on each of the compute nodes,
> and to have a gmond running on the head node which would aggregate the data
> from the compute nodes and add it's own monitoring data.
> The problem I am having is that it kind of appears that I have to choose to
> either aggregate the data at the head node, or monitor the head node,
> but I can't seem to get both working at the same time.
> I am using the unicast option.
>
> On the compute nodes:
> cluster {
> name = "my cluster"
> }
>
> host {
> location = "unspecified"
> }
>
> udp_send_channel {
> host = head
> port = 8649
> }
> tcp_accept_channel {
> port = 8649
> }
>
>
> On the head node:
> cluster {
>
>
> name = "my cluster"
> }
>
> host {
> location = "unspecified"
> }
>
> udp_recv_channel {
> port = 8649
> }
> tcp_accept_channel {
> port = 8649
> }
>
> Then I have a gmetad running on a seperate server with the following in it's
> gmetad.conf:
> data_source "my cluster" head
>
> Any help or suggestions would be greatly appreciated!
> Jeff
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