I agree with Steve, Chris,
I would suggest that (at least until you are more confident) that
you change the gmond.conf config to be unicast to your headnode, i.e:
udp_send_channel {
#mcast_join = 239.255.160.2
host = your-headnode-hostname
port = 8649
}
And also confirm all seems OK by netcating your headnode XML port:
nc your-headnode 8649
Hopefully it will all just work.
- richard
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Steven
A. DuChene
Sent: 20 April 2006 01:15
To: Botka,Christopher
Cc: [email protected]
Subject: Re: [Ganglia-general] Ganglia reporting all nodes down...except
1
Chris:
Ganglia does multicast out of the box and my guess is that multicast
support is not turned on in the Cisco 6500 switch you are using to
interconnect your nodes.
--
Steve
-----Original Message-----
>From: "Botka, Christopher" <[EMAIL PROTECTED]>
>Sent: Apr 19, 2006 3:15 PM
>To: [email protected]
>Subject: [Ganglia-general] Ganglia reporting all nodes down...except 1
>
>
>Hi,
>
>I have a small cluster (15 nodes x86_64 RHE4/FC4 mixed about 50/50). I
>recently built and installed v3.0.3 making only minor changes to the
>gmond.conf file: <CLUSTER> name, owner, latlong, url and location. The
>gmond.conf file is identical across the nodes and they are running the
>same NFS shared binary. The only change I made to gmetad.conf is the
>data_source line.
>
>If I am only running gmond on the head node (where gmetad is running)
>ganglia reports correct and accurate info in the Physical View for the
>head node, however the images are empty where graphs are supposed to
>be. All I see is the std. red "x" and image name with a border.
>
>If I start gmond on any other node, the node will infrequently report a
>value for load and will appear up for about 1-3 mins, but
>CPU/Hardware/Software are not reported - same problem with the images
>of the graphs.
>
>If I start gmond on all the nodes and the stop it on the head node,
>node01 will begin reporting accurately in the Physical View, all others
>reported as down, no images. If I stop node01, node02 reports
>correctly (still no images), etc. I have done this up through node05
>with same results.
>
>Nothing weird in dmesg or messages and everything looks OK when I run
>gmond in debug. When I look at the debug of gmetad, the updates of all
>nodes except the one reporting correctly are very infrequent.
>
>All these nodes are single 1Gb nic attached to the same blade on a
>cisco 6500. Windows DHCP and DNS ;-0. I have also tried
>installing/running the rpm on some of the nodes with the same outcome.
>
>This is the first time I have used Ganglia, so I am not certain if I am
>making an obvious newbie mistake. Any & all suggestions are welcom,
>the amount of time I have already spent without a breakthrough is
>embarrassingly large.
>
>Thx,
>
>Chris
>
>
>
>
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-------------------------------------------------------
Using Tomcat but need to do more? Need to support web services,
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your job easier Download IBM WebSphere Application Server v.1.0.1 based
on Apache Geronimo
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