How to if_* graph from Devmon to Hobbit

[xbgmsharp]

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.


-------------- next part --------------
A non-text attachment was scrubbed...
Name: htmllog.patch
Type: text/x-patch
Size: 2080 bytes
Desc: not available
URL: <http://lists.xymon.com/pipermail/xymon/attachments/20070713/ea4c5faf/attachment.bin>