[hobbit] How to if_* graph from Devmon to Hobbit

Where do you get this extra-rrd.pl script from to add these changes?

Thanks Trent Melcher

On Fri, 2007-07-13 at 11:58 +0200, xbgmsharp wrote:

How to if_* graph from Devmon to Hobbit

This mail describe how to graph all if_* data from Devmon to Hobbit. I am currently running hobbit 4.2.0/all-in-one patch and devmon 0.3-beta2

1. First you need a curently working hobbit and devmon.

2. Then make sure, than the file devmon/templates/modele/if_load/message TABLE:rrd() This will show data in a htmltable and add rrd information in the status page.

In order to check, you should see RRD data information in the status
page of the service corresponding to your devmon modele when showing
source html.

3. Now make parse the data to create a rrd file (one par interfaces),
   this is done via extra-rrd.pl. In etc/hobbitlaunch.cfg

[rrdstatus] ENVFILE /data/hobbit/server/etc/hobbitserver.cfg NEEDS hobbitd CMD hobbitd_channel --channel=status
--log=$BBSERVERLOGS/rrd-status.log hobbitd_rrd
--rrddir=$BBVAR/rrd
--extra-script=$BBHOME/ext/extra-rrd.pl
--extra-tests=if_load

In ext/extra-rrd.pl

if ( $TESTNAME eq "if_load" ) {

     # Analyze the message we got
     foreach $line (@input) {
             if ($line =~ /(^[A-Z].*) (\d+):(\d+)$/ ) {

                     # The RRD dataset definitions
                     print "DS:in:DERIVE:600:0:U\n";
                     print "DS:out:DERIVE:600:0:U\n";

                     # The filename
                     print "if_load_$1.rrd\n";

                     # The data
                     print "$2:$3\n";
             }
     }

}

4. Modify etc/hobbitgraph.cfg

[if_load] FNPATTERN if_load(.*).rrd TITLE Network Traffic YAXIS Bits/second DEF:in at RRDIDX@=@RRDFN@:in:AVERAGE CDEF:inbytes at RRDIDX@=in at RRDIDX@,8,* DEF:out at RRDIDX@=@RRDFN@:out:AVERAGE CDEF:outbytes at RRDIDX@=out at RRDIDX@,8,* LINE1:inbytes at RRDIDX@#@COLOR@:@RRDPARAM@ In GPRINT:inbytes at RRDIDX@:LAST: %8.2lf %s (cur) GPRINT:inbytes at RRDIDX@:MAX: %8.2lf %s (max) GPRINT:inbytes at RRDIDX@:MIN: %8.2lf %s (min) GPRINT:inbytes at RRDIDX@:AVERAGE: %8.2lf %s (avg)\n LINE1:outbytes at RRDIDX@#@COLOR@:@RRDPARAM@ Out GPRINT:outbytes at RRDIDX@:LAST: %8.2lf %s (cur) GPRINT:outbytes at RRDIDX@:MAX: %8.2lf %s (max) GPRINT:outbytes at RRDIDX@:MIN: %8.2lf %s (avg) GPRINT:outbytes at RRDIDX@:AVERAGE: %8.2lf %s (avg)\n

4. In etc/hobbitserver.cfg Modify the following. See help/howtograph.html

TEST2RRD="cpu=la,disk,...,if_load" GRAPHS="la,disk,if_load::1" The ::1 set the maxcount in order to make one graph form each rrd file create.

5. In etc/hobbitcgi.cfg Modify the following. See hobbitsvc.cgi man

CGI_SVC_OPTS="--env=/data/hobbit/server/etc/hobbitserver.cfg
--no-svcid --history=top --multi-grahs=if_load,if_err..."

6. The hardest part. The hobbit parsing doesn't remove html table table so you will see
   many graph link. In order to fix than, you need to modify the hobbit source with the patch:

lib/htmllog.c

$cd lib/ $patch -p0 < htmllog.path

Here is the path, this only set a new counter for all if_* services. This is allready working for the trends colunms because, it is
checking all rrd file in the directory.

Henrik, do you have any tips to get the nice counter without editing
the source code of htmllog.c file ?

That's all folks.

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