Hi Bernard.
I'm playing with NetSNMP right now. Thanks for the toasterview link.
There are quite a few SNMP tools out there. My challenge is to try
and consolidate some of our monitoring functionality.
BTW, I'm also messing with the RRD parameters because I'd rather have
larger files with no data point averaging in order to preserve
granularity and accuracy.
-------
Yemi
On Dec 15, 2005, at 11:20 AM, Bernard Li wrote:
Hi Yemi:
Although not exactly related, I assume you know about this:
http://www.cuddletech.com/code/toasterview/
I will be interested in trying out your patch. We use NetApp
filers as
our main NFS servers and once in a blue moon we would have huge
cluster
jobs that spike the NFS servers - at that point it'd be nice to have
Ganglia poll some information out of them to find out what's going
on...
Thanks,
Bernard
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On
Behalf Of Adeyemi Adesanya
Sent: Thursday, December 15, 2005 10:24
To: [EMAIL PROTECTED]
Cc: ganglia-developers@lists.sourceforge.net
Subject: Re: [Ganglia-developers] Host spoofing for SNMP
Hi Martin.
I will put in some testing time before submitting code along with
documentation. This is of great importance to me because I need to
monitor Network Appliance (NetApp) boxes.
It is also worth considering security implications. Once the
recipient gmond has processed the spoof message, it is
indistinguishable from any other gmetric message. The Web frontend
has no clue!
------
Yemi
On Dec 15, 2005, at 3:18 AM, Martin Knoblauch wrote:
Yemi,
please open a bugzilla entry, assign to me and attach your patch
(diff
-u format).
The functionality sounds interesting to consider. I assume you are
willing to provide the documantation for it :-)
Another thing I always wanted is a way to fix up the host name in
"gmond" reporting. I have one installation with machines having
NICs in
a high-availability setup. They actually change their DNS
names when a
switch occurs, screwing the statistics royally.
Cheers
Martin
--- "Adesanya, Adeyemi" <[EMAIL PROTECTED]> wrote:
Hi There.
I have been thinking about using Ganglia to monitor a broader range
of networked devices for a while. Many of these systems do not run
common OS platforms and communicate via the SNMP protocol.
Last year
I came up with a Ganglia 2.5.x hack that enabled a host to send
gmetric updates on behalf of another device (I call it spoofing). I
have just added the same functionality on top of Ganglia
3.0.x and it
appears to be working OK.
I modified lib/protocol.x and created a new message type
that adds a
spoof IP address and host/device name to the existing gmetric data
struct. Here's an example of it in use:
'gmetric --help' now lists a new option:
-S, --spoof=STRING IP address and name of host/device (colon
separated) we
are spoofing (default=`')
you use it like this:
'gmetric -c cfile -n dataRateIn -v 1234231434 -t uint32 -u bytes -S
123.456.789.012:[EMAIL PROTECTED]
Add querying your target gmond shows the following:
<HOST NAME="[EMAIL PROTECTED]" IP="123.456.789.012"
REPORTED="1134604773" TN="9" TMAX="20" DMAX="86400"
LOCATION="unspecified" GMOND_STARTED="0">
<METRIC NAME="dataRateIn" VAL="1234231434" TYPE="uint32"
UNITS="bytes" TN="9" TMAX="60" DMAX="0" SLOPE="both"
SOURCE="gmetric"/>
</HOST>
I'll be using this feature in production for sure and I'd
like to get
the CVS maintainers to review my code and add it to CVS.
------
Yemi
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