Hey Tamir,
I assume you want something like this:
http://rcf.unl.edu/ganglia/?c=red-workers&h=node155&m=load_one&r=hour&s=descending&hc=4
(That link's old - where'd you find it? I'll update it...)
Can you send out the relevant lines from the hadoop-metrics file?
Also, can you do the following
telnet (Ganglia host) (Ganglia port)
This should spew out lots of XML data; use the host and port you
configured hadoop with.
Brian
On Mar 17, 2009, at 8:48 AM, Tamir Kamara wrote:
Hi,
For a few days I'm trying to make hadoop work with the Ganglia
monitoring
software.
I'm using hadoop 0.18.3 with ganglia 3.0.6, I've changed the hadoop-
metrics
file as described in the wiki and also used HADOOP-3422 patch.Now, I
can
only see system metrics in the ganglia data and nothing about hadoop
itself.
I also tried to add a collection group to gmond.conf for metric
mapred.tasktracker.mapTaskSlots, but that caused gmond to stop working
because it couldn't "collect the metric on the platform" which means
that it
doesn't recognize the metric.
It should be possible to do this like in http://rcf.unl.edu/ganglia/?c=red
.
There're some posts of this issue but I couldn't find any answer or
detailed
description of how to monitor hadoop with ganglia.
Does anyone have any experience with this ?
Thanks,
Tamir
