Hi Matt. I'll take a look at your 2.6.0 snapshot and see if I can port my spoofing mods. Yes, I think this feature should be in 2.6.0 (probably far too late for 2.5.8).
BTW, can you patch 2.5.8 so gmond will unicast to multiple channels? I'm guessing it should be straightforward....I used this feature in one of your snapshots before. ---- Yemi > -----Original Message----- > From: Matt Massie [mailto:[EMAIL PROTECTED] > Sent: Monday, December 06, 2004 2:46 AM > To: Adesanya, Adeyemi > Cc: ganglia-developers@lists.sourceforge.net; Wachsmann, Alf > Subject: Re: [Ganglia-developers] Host spoofing for SNMP > > yemi et al- > > i'm working to finishing up moving code into the 2.6.0 > release that will address this problem and others. if you do > a "cvs update" you'll see significant code changes which i'll > address very soon. i think allowing ganglia components to > speak on behalf of other devices is an important feature > (your SNMP case is the perfect example of why). we'll get > that in there. > > there is a snapshot at > http://matt-massie.com/ganglia/ganglia-monitor-core-2.6.0.2004 > 12051814.tar.gz > > this snapshot is not complete but if you look at > ./gmond/gmond.c you'll get a feel for what i'm doing. > > more details soon > -matt > > > > Adesanya, Adeyemi wrote: > > For some time now I've wanted to implement some kind of > mechanism that would allow me to transmit metric information > by proxy - that is send data from one host on behalf of > another. The reason for this is that I would like to monitor > 'black box' network devices that can only be accessed via > SNMP. NetApp file servers are a good example. > > > > Well I spent some time looking at the ganglia 2.5.x code > last week and figured out how incoming XDR packets are > translated. What I came up with is a host spoofing modification. > > > > If a user-defined (sent via gmetric) metric name is > qualified with a valid IP address, I use this address to > identify the source host instead of getting this information > from the incoming packet: > > > > gmetric --name 123.123.123.123:temperature --value `cputemp` --type > > int16 --units Celcius > > > > Will cause listening gmond processes to insert this metric > > (temperature) under the host that matches > > 123.123.123.123 . > > > > I have also tweaked gmetric to send a spoof heartbeat > message for the > > metric "--name 123.123.123.123:heartbeat" > > > > This is allow me to keep track of when my SNMP devices are > up or down. > > > > What do you think? The interface is pretty clumsy right now > but it does work. I'm definetly concerned about the potential > for abuse so I think some control for restricting it's use is wise. > > > > ---- > > Yemi > > > > > > ------------------------------------------------------- > > SF email is sponsored by - The IT Product Guide Read honest > & candid > > reviews on hundreds of IT Products from real users. > > Discover which products truly live up to the hype. Start > reading now. > > http://productguide.itmanagersjournal.com/ > > _______________________________________________ > > Ganglia-developers mailing list > > Ganglia-developers@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/ganglia-developers > > -- > PGP fingerprint 'A7C2 3C2F 8445 AD3C 135E F40B 242A 5984 ACBC 91D3' > > They that can give up essential liberty to obtain a little > temporary safety deserve neither liberty nor safety. > --Benjamin Franklin, Historical Review of Pennsylvania, 1759 >
