Ian B.,
I would try changing the multicast port instead of the IP. Make sure
you've added a new line in the gmetad.conf for the new cluster. You can
test that the new cluster only sees the two nodes by doing a netcat `nc`
on the tcp port on one of the two nodes, ex `nc node2 8649`
Good Luck,
Ian C.
Ian Bonnycastle wrote:
I am currently taking over a Ganglia setup thats on our grid(s), and
am having trouble making the Ganglia setup a little more specific to
the clusters. Before, all hosts were in one cluster, and now I'm
trying to break out the various hosts into different clusters.
Originally, they all had the same multicast configuration, probably
from the same --default_config output on gmond. Now, I've modified two
hosts to be in a different cluster, and changed the udp_send_channel
mcast_join IP address as well as the cluster { name } parameter. Even
after that, both gstat and the PHP web pages insist there is still one
cluster, and the two systems I've moved to the new cluster show up as
"down". I'm really confused about why the gmetad on the PHP web server
isn't picking up the new multicasts, and why the gmond's on the
systems I've changed over still see multicast traffic from the other
nodes which are on a different multicast IP.
I've restarted the gmond and gmetad on both sets of hosts multiple
times with no success, and even removed (backed up) the rrds directory
on the PHP server multiple times.
Can anyone help with this conundrum?
Ian
----
Ian Bonnycastle
Systems Administrator
Center for Language and Speech Processing
Johns Hopkins University
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