Yes, that is correct. Christian. ----- Original Message ----- From: "Brad Nicholes" <[EMAIL PROTECTED]> To: "Alex Dean" <[EMAIL PROTECTED]>; <ganglia-developers@lists.sourceforge.net>; "Christian Gouret" <[EMAIL PROTECTED]> Sent: Tuesday, November 06, 2007 11:03 PM Subject: Re: [Ganglia-developers] questions on metrics aspython modules
So let me see if I understand this correctly. You have a main node which is gathering metrics from the other cluster nodes through some other means than gmond. Since your main node contains all of the metric data, your only problem is pushing that data up through gmond on the main node to gmetad and at the same time fooling gmond into thinking that the data actually came from the original cluster node rather than from the main node. You do this by spoofing the originating address of the packet that is carrying the metric data. Is this correct? Brad >>> On 11/6/2007 at 2:12 PM, in message >>> <[EMAIL PROTECTED]>, "Christian Gouret" <[EMAIL PROTECTED]> wrote: > No problem to give a "user oriented" view of what we do with "spoofing". > The clusters we manage in my compagny ( Alcatel-Lucent) are equipped with > 24 > nodes, only two of the nodes are "main node" working in actif/standby, > then > only one of these two "main node" are operational at a time. > Only "main node" run gmetad, but all the nodes run gmond. > This "main node" already collect metrics from other nodes using a historic > proprietary software and offer all these metrics through CLI, then all the > metrics of all the nodes are already available on the "main node". > Then to bring all the user metrics of all the nodes in Ganglia we only > have > to deliver one python script on the "main node" collecting the metrics on > the proprietary CLI of the "main node" at send it using gmetric with the > "spoof" option to preserve in the front-end the real node origin of each > user metric. > Without this option, we would need to deploy scripting on each node to > collect locally the metrics...end also improve our proprietary software to > open the CLI on no "main node"...moreover we only have python on the "main > node"... > As a summary : Without "spoofing" may be we would not use gmetric, and > may > be without gmetric we would not use Ganglia ? > Christian. > > > ----- Original Message ----- > From: "Brad Nicholes" <[EMAIL PROTECTED]> > To: "Alex Dean" <[EMAIL PROTECTED]>; > <ganglia-developers@lists.sourceforge.net>; "Christian Gouret" > <[EMAIL PROTECTED]> > Sent: Tuesday, November 06, 2007 7:36 PM > Subject: Re: [Ganglia-developers] questions on metrics aspython modules > > >>>> On 11/6/2007 at 11:26 AM, in message >>>> <[EMAIL PROTECTED]>, > "Christian Gouret" <[EMAIL PROTECTED]> wrote: >> Hello Brad, >> I read the README pointed by the link you provide, and I see nothing >> regarding the "spoofing" option introduced in the version 3.0.4 of >> Ganglia. >> Does it mean that with "python module", it'll not be any more possible to >> use spoofing ( I can't believe it ) ? >> Christian. >> > > That is actually a question that I have. Up until now I have not touched > the "spoofing" code at all. What was there before, should still work in > the > > code that is currently in trunk. However, the XDR data packet > restructuring > > that I am currently working on, affects the "spoofing" packets > significantly. To this point, I have not be able to completely understand > what the "spoofing" code is doing. I would like to understand the > "spoofing" option better from a user point of view so that it can be > either > carried forward in 3.1 as-is or replicated in a python or C interface > module. Maybe you can enlighten me on what "spoofing" is, how it is used > and why. What is the expected out come or functionality? > > Brad ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Ganglia-developers mailing list Ganglia-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ganglia-developers
