Hi Umberto,
I think you may have misunderstood what I may have written in one of my
previous postings. Unfortunately, I've only been able to configure a
single Grid with multiple clusters. From what I have read, a single
gmetad defines a Grid which is a collection of clusters. What I am
looking for is a "Grid of Grids". That is, a single Grid which has
multiple remote Grids in a single web page. This would mean multiple
gmetad daemons running on a single node for each Grid one wants to
define. This could mean one could have a web server for each gmetad,
but that's not what I want. Examples of "Grid of Grids" are listed
below,
http://ganglia.g.gsic.titech.ac.jp/ganglia/
<http://ganglia.g.gsic.titech.ac.jp/ganglia/> - This is a Grid in
Japan. You can see the top Grid shows "4 sources". If you then look
below, you will see four 4 Grids and when you access each Grid you will
see clusters of nodes. In the case of this example, the clusters of
nodes a grouped by racks of computers. This is what I want to try and
setup.
http://monitor.millennium.berkeley.edu/
<http://monitor.millennium.berkeley.edu/> - This is another example.
Note that the "Infrastructure Grid" is within "UC Berkeley Grid".
Someone did reply to one of my previous postings that he figured out how
to do this and that he would post how this would be done at a later
date.
What I'm attempting to do is to have a "Grid of Grids" where all of the
information is accessible from a single web server and a common RRD file
directory location. I've been trying to figure out how this is done,
but haven't gotten this to work right at this time.
I may decide just to have a single Grid with multiple clusters since
this is a little bit easier to manage. If I can figure out this out, I
will post it on the mailing list so that all can benefit from it.
As I stated above, I've only been able to successfully setup the
following configuration under Ganglia 3.1.7.
Ganglia 3.1.7 Apache Web server
=========================
- OS Version: RedHat 5.5
- RRDs files all stored on an NFS filesystem
/nfs/data/ganglia/rrds.
- A single Apache web server running a single gmetad daemon
which collects data from 4 different clusters.
- Installed NVIDIA GPU Python Ganglia module plugin. This
requires the NVIDIA NVML Python binding "nvidia-ml-py". If you search
the mailing list, you can find more information about this if you are
using NVIDIA GPUs. The binding does require Python 2.5 or higher.
- I had to use Python 2.7.2 since our RedHat 5.5 systems don't
have version of Python 2.5 or higher. I installed Python 2.7.2 on a
common NFS mounted filesystem and built Ganglia using this version of
Python.
Ganglia 3.1.7 clients
===============
- OS Version: RedHat 5.5
- All clients use a basic gmond.conf configuration using
multicast. You can find examples of this is you search the mailing list
or you can take a look at
http://sourceforge.net/apps/trac/ganglia/wiki/ganglia_quick_start
<http://sourceforge.net/apps/trac/ganglia/wiki/ganglia_quick_start> .
This is a good link to start with. I did use unicast for one set of
cluster nodes we have because for some strange reason, I could only get
one node to show up as being "up" on the web page. All other nodes
would show up as being "down" after starting all of the gmond daemons on
the cluster nodes. I'm not sure if the problem has something to do with
the hardware or what. The biggest difference I can see is that this set
of nodes use 10 GigE network cards. Anyway, after switching to unicast
for these nodes the nodes all show as being "up".
- None of the clients are running gmetad.
I hope what I have provided helps and I do apologize if my postings have
been confusing. Since I've gotten Ganglia 3.1.7 working, I want to try
and get Ganglia 3.2 to work. I don't have this working completely yet.
Kind Regards,
Wayne Lee
From: Umberto Toscano (Gmail) [mailto:wavefor...@gmail.com]
Sent: Wednesday, October 05, 2011 5:53 AM
To: Lee, Wayne
Subject: [Ganglia-general] Sample/example gmetad.conf, gmond.conf,
conf.php, etc for multiple grids, one web server, nfs mounted rrds area?
Hi Lee, I've a multiple cluster system, on each master node of my
cluster i've gmond and gmetad that collect data via multicast form other
gmond deamon running on each node of cluster.
So i would be create a grid on my web server that collect data from
gmetad running on each master node of four cluster. I've read that you
successful configured Ganglia with one Grid of cluster, can you show me
the gmond of a single nodes and gmetad(for master node of cluster),
gmetad(for web server that aggregate) configuration file?
Thank you
Regards
---
Umberto Toscano
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