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

[xbgmsharp <xbg...@gm...>]

Hello,

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 pag=
e.

In order to check, you should see RRD data information in the status =20
page of the service corresponding to your devmon modele when showing =20
source html.

3)
Now make parse the data to create a rrd file (one par interfaces), =20
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=3Dstatus \
                 --log=3D$BBSERVERLOGS/rrd-status.log hobbitd_rrd \
                 --rrddir=3D$BBVAR/rrd \
                 --extra-script=3D$BBHOME/ext/extra-rrd.pl  \
                 --extra-tests=3Dif_load

In ext/extra-rrd.pl

if ( $TESTNAME eq "if_load" ) {

         # Analyze the message we got
         foreach $line (@input) {
                 if ($line =3D~ /(^[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@RRDIDX@=3D@RRDFN@:in:AVERAGE
         CDEF:inbytes@RRDIDX@=3Din@RRDIDX@,8,*
         DEF:out@RRDIDX@=3D@RRDFN@:out:AVERAGE
         CDEF:outbytes@RRDIDX@=3Dout@RRDIDX@,8,*
         LINE1:inbytes@RRDIDX@#@COLOR@:@RRDPARAM@ In
         GPRINT:inbytes@RRDIDX@:LAST: %8.2lf %s (cur)
         GPRINT:inbytes@RRDIDX@:MAX: %8.2lf %s (max)
         GPRINT:inbytes@RRDIDX@:MIN: %8.2lf %s (min)
         GPRINT:inbytes@RRDIDX@:AVERAGE: %8.2lf %s (avg)\n
         LINE1:outbytes@RRDIDX@#@COLOR@:@RRDPARAM@ Out
         GPRINT:outbytes@RRDIDX@:LAST: %8.2lf %s (cur)
         GPRINT:outbytes@RRDIDX@:MAX: %8.2lf %s (max)
         GPRINT:outbytes@RRDIDX@:MIN: %8.2lf %s (avg)
         GPRINT:outbytes@RRDIDX@:AVERAGE: %8.2lf %s (avg)\n


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

TEST2RRD=3D"cpu=3Dla,disk,...,if_load"
GRAPHS=3D"la,disk,if_load::1"
The ::1 set the maxcount in order to make one graph form each rrd file creat=
e.

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

CGI_SVC_OPTS=3D"--env=3D/data/hobbit/server/etc/hobbitserver.cfg =20
--no-svcid --history=3Dtop --multi-grahs=3Dif_load,if_err..."

6)
The hardest part.
The hobbit parsing doesn't remove html table table so you will see =20
many graph link.
In order to fix than, you need to modify the hobbit source:

lib/htmllog.c

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 =20
checking all rrd file in the directory.

Henrik, do you have any tips to get the nice counter without editing =20
the source code of htmllog.c file ?

That's all folks.

--=20
Thanks for using xbgm#
http://xbgm.sourceforge.net/
Please feedback.