I think I actually figured it out. I had the udp_send_channel and the
udp_recv_channel settings mixed between the two clusters, so they
were getting "cross traffic" and mixing incorrectly. Setting all the
values different for each cluster made it work perfectly.
Ian
----
Ian Bonnycastle
Systems Administrator
Center for Language and Speech Processing
Johns Hopkins University
On Oct 23, 2006, at 12:15 PM, Ian Cunningham wrote:
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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