Guys:
I haven't checked the archives, but is Yemi's spoofing code available
somewhere? Perhaps in bugzilla?
I have a friend who wants to try it out...
Thanks,
Bernard
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
[EMAIL PROTECTED]
Sent: Thursday, August 24, 2006 9:27
To: [EMAIL PROTECTED];
ganglia-general@lists.sourceforge.net; [EMAIL PROTECTED]
Subject: Re: [Ganglia-general] Ganglia scaling testing?
Ahh yes,
I forgot about Yemi's spoofing code. Hacking that sounds the easiest
way.
regards,
Richard
-----Original Message-----
From: Dr. Dave Blunt [mailto:[EMAIL PROTECTED]
Sent: 24 August 2006 16:58
To: ganglia-general; harper.mann; Grevis, Richard: IT (LDN)
Subject: RE: [Ganglia-general] Ganglia scaling testing?
Hey Richard,
We were wanting to populate a gmond on a separate box that we would
run some alarm code against - no gmetad on the box. I'm trying
Yemi's spoof code right now to get a large number of 'hosts' set up
with lots of metrics. I did look at the packet format in the source
but my C is
a
bit rusty. I got bogged down in tcpdump/tcpreplay without much
progress.
Thanks,
Dave.
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
Sent: Thursday, August 24, 2006 4:09 AM
To: [EMAIL PROTECTED]; ganglia-general@lists.sourceforge.net;
Dr.
Dave Blunt
Subject: RE: [Ganglia-general] Ganglia scaling testing?
Harper,
I think that the RRD disk I/O from gmetad will be the first limit
you
reach.
If you want to load up the gmond process, you could write a program
to
send properly formatted gmond packets but with a spoofed and always
changing source address. the headnode gmond only determines the
host
from the source address of the packet. I am not sure the of the best
way to do this - either a standalone program that sends packets flat
chat
where the contents were snarfed from real gmond packets, or maybe a
hack to gmond itself.
Simulating on the server/gmetric side is easier - just write a
script
that contructs the right XML with thousands of hosts and presents it
on a port, and point gmetad to that port.
regards,
richard grevis
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
Harper Mann
Sent: 23 August 2006 18:08
To: ganglia-general@lists.sourceforge.net; Dr. Dave Blunt
Subject: [Ganglia-general] Ganglia scaling testing?
Hi,
We're supporting a couple of sites with several hundred servers
monitored with Ganglia. So far, ganglia is working well and easily
keeping up with the load. We want to run some scaling tests and
thought it would be good to simulate a large gmond with a couple
thousand servers reporting before we have to support that many. Is
there a way to simulate multiple servers reporting to a gmond? If
not, what do you think might be the best approach for this? We
could take a crack
at
creating it. Thanks for any help. Regards,
- Harper
Harper Mann
Groundwork Open Source
510-599-2075 (cell)
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