That might work, but I don't think anyone sets up their ganglia so that a
single gmond is trying aggregate all clusters. That's what the gmetad daemon is
for.
Also note that even though you have a separate multicast address for each
cluster, the port still has to be unique. The port is what gmetad and the web
frontend use to distinguish between clusters. You get really weird results if
multiple data_source lines use the same port.
An ideal configuration might be:
Each of the 5 clusters has a unique gmond.conf, with its own multicast address
and port number.
The gmetad host has 5 data_source lines to query one host from each of the 5
clusters.
On Mar 23, 2011, at 9:52 AM, Ron Cavallo wrote:
>
> I need some help. I am trying to configure my gmetad to collect from
> different clusters on different IP's. I have 5 clusters. This is my
> gmetad collections server's local gmond.conf configuration:
>
>
> /* Feel free to specify as many udp_send_channels as you like. Gmond
> used to only support having a single channel */
> udp_send_channel {
> mcast_join = 239.2.11.72
> port = 8649
> ttl = 1
> }
>
> /* You can specify as many udp_recv_channels as you like as well. */
> udp_recv_channel {
> mcast_join = 239.2.11.71
> port = 8649
> bind = 239.2.11.71
> }
>
> udp_recv_channel {
> mcast_join = 239.2.11.72
> port = 8649
> bind = 239.2.11.72
> }
>
> udp_recv_channel {
> mcast_join = 239.2.11.73
> port = 8649
> bind = 239.2.11.73
> }
>
> udp_recv_channel {
> mcast_join = 239.2.11.74
> port = 8649
> bind = 239.2.11.74
> }
>
> udp_recv_channel {
> mcast_join = 239.2.11.75
> port = 8649
> bind = 239.2.11.75
> }
>
> udp_recv_channel {
> port = 8649
> }
>
> This is an excerpt from ONE OF THE CLUSTERS ABOVE (the .74 cluster)
>
> /* Feel free to specify as many udp_send_channels as you like. Gmond
> used to only support having a single channel */
> udp_send_channel {
> mcast_join = 239.2.11.74
> port = 8649
> ttl = 1
> }
>
> /* You can specify as many udp_recv_channels as you like as well. */
> udp_recv_channel {
> mcast_join = 239.2.11.74
> port = 8649
> bind = 239.2.11.74
> }
>
> I configure only one server in a cluster to be polled from the gmetad
> since that server has all of the cluster members information in it
> anyway. Here is how I have it configured to talk to the one gmond shown
> directly above:
>
> data_source "SaksGoldApps" 45 sd1mzp01lx.saksdirect.com:8649
>
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