Okay thanks all of our servers are on eth0 or eth1 so I can graph both and if one isn't active then no big deal

----- Original Message ----- From: Henrik Stoerner <henrik at hswn.dk> To: hobbit at hswn.dk <hobbit at hswn.dk> Sent: Mon Mar 10 05:18:46 2008 Subject: Re: [hobbit] All hosts network traffic graph page

On Sat, Mar 08, 2008 at 09:35:49PM -0600, Taylor Lewick wrote:

Is there a simple way to setup a view via a report or link in hobbit so that I can display all of the hosts network traffic graphs?

Kind of like an mrtg style view. That way if we see bandwidth spike on our switch we can pull up this page and get a quick view of which hosts are talking a lot?

Tricky, because network interface names vary from one host to another.

What you can do is to create a multi-graph definition in hobbitgraph.cfg that picks out the exact NIC graph you want. Copy the existing "ifstat" definition, and make a new "eth0-multi" graph where the FNPATTERN refers only to the interface graph you want - i.e. instead of the "ifstat.(.+).rrd" pattern you refer to the exact "ifstat.INTERFACE.rrd" file matching the name of your NIC. E.g. for "eth0":

[eth0-multi] FNPATTERN ifstat.eth0.rrd TITLE Network Traffic YAXIS Bits/second DEF:inbytes at RRDIDX@=@RRDFN@:bytesReceived:AVERAGE CDEF:in at RRDIDX@=inbytes at RRDIDX@,8,* DEF:outbytes at RRDIDX@=@RRDFN@:bytesSent:AVERAGE CDEF:out at RRDIDX@=outbytes at RRDIDX@,8,* LINE2:in at RRDIDX@#@COLOR@:@RRDPARAM@ inbound GPRINT:in at RRDIDX@:LAST: \: %10.1lf (cur) GPRINT:in at RRDIDX@:MAX: \: %10.1lf (max) GPRINT:in at RRDIDX@:MIN: \: %10.1lf (min) GPRINT:in at RRDIDX@:AVERAGE: \: %10.1lf (avg)\n LINE2:out at RRDIDX@#@COLOR@:@RRDPARAM@ outbound GPRINT:out at RRDIDX@:LAST: \: %10.1lf (cur) GPRINT:out at RRDIDX@:MAX: \: %10.1lf (max) GPRINT:out at RRDIDX@:MIN: \: %10.1lf (min) GPRINT:out at RRDIDX@:AVERAGE: \: %10.1lf (avg)\n

Then you can create a new metric on the "Metrics Report" page by adding a new "<option>" ... in the ~hobbit/server/web/hostgraphs_form : Find the "<SELECT" tag and add an option for the "eth0" graph:

<SELECT NAME=testname MULTIPLE SIZE=15>
<option value="ALL" SELECTED>ALL</option>
... other current options ...
<option value="eth0">Network I/O eth0</option>

Note that in hobbitgraph.cfg the name is "eth0-multi", but in the hostgraphs_form it is just "eth0". The "-multi" is added automatically.

You should then be able to view the eth0 I/O from the Metrics report page.

Regards, Henrik

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