1) Install MRTG and RRDTOOL
------------------------
MRTG -> http://oss.oetiker.ch/mrtg
RRDTOOL -> http://oss.oetiker.ch/rrdtool
I run MRTG and RRDTOOL on a completely separate server from my JNOS system,
so in my case I have to make sure IP routing is in place such that my MRTG
is able to read SNMP data from my JNOS system. This separate server is also
running apache to service my general webpages, including the SNMP stats.
2) Create your MRTG configuration file - mrtg.cfg
----------------------------------------------
#
WorkDir: /var/www/htdocs/yourwebsite/mrtg/jnos
#
LogFormat: rrdtool
#
Options[_]: noinfo,nobanner,growright,logscale
XSize[_]: 300
YSize[_]: 100
#
EnableIPv6: no
NoMib2: Yes
#
# JNOS 2.0 interfaces
# bob is a wormhole to Bob's system
Target[bob]: #bob:password@ipaddressofmyjnossystem:
MaxBytes[bob]: 150
PNGTitle[bob]: Bob (AXIP)
Title[bob]: Bob
# gus is a wormhole to Gus' system
Target[gus]: #gus:password@ipaddressofmyjnossystem:
MaxBytes[gus]: 150
PNGTitle[gus]: Gus (AXIP)
Title[gus]: Gus
# vhf is a 1200 baud radio port
Target[vhf]: #vhf:password@ipaddressofmyjnossystem:
MaxBytes[vhf]: 150
PNGTitle[vhf]: Vhf (145.01)
Title[vhf]: 145.010 Mhz 1200 Baud
3) Create a script to make the pretty pictures - gengraph.sh
---------------------------------------------------------
#
# Generate two pictures - one for wormholes, one for my RF port
#
# IMPORTANT : do NOT use STACK on the very first AREA for each
# 'group' of items you are plotting. If you have only 1 item, then
# don't use STACK at all in the AREA directives, you will see this
# in the sample script below, it should be obvious.
#
cd /var/www/htdocs/yourwebsite/mrtg/jnos
#
# Generate first picture of both wormhole's traffic
#
rrdtool graph pastday.png -a PNG \
\
-A --width 600 --height 300 \
\
DEF:bob_in=bob.rrd:ds0:AVERAGE \
DEF:bob_out=bob.rrd:ds1:AVERAGE \
DEF:gus_in=gus.rrd:ds0:AVERAGE \
DEF:gus_out=gus.rrd:ds1:AVERAGE \
\
CDEF:bobO=bob_out,-1,* \
CDEF:gusO=gus_out,-1,* \
\
AREA:bob_in#00FF00:"Bob in" \
AREA:gus_in#FF0000:"Gus in":STACK \
\
AREA:bobO#FFFF00:"Bob out" \
AREA:gusO#00FFFF:"Gus out":STACK
# Generate second picture of the RF traffic
rrdtool graph pastdayRFonly.png -a PNG \
\
-A --width 200 --height 100 \
\
DEF:vhf_in=vhf.rrd:ds0:AVERAGE \
DEF:vhf_out=vhf.rrd:ds1:AVERAGE \
\
CDEF:vhfO=vhf_out,-1,* \
\
AREA:vhf_in#999999:"Vhf in" \
\
AREA:vhfO#992200:"Vhf out"
3) Setup a crontab
---------------
#
# MRTG is run every 5 minutes
#
0,5,10,15,20,25,30,35,40,45,50,55 * * * * /usr/local/mrtg-2/bin/mrtg --logging=/var/www/htdocs/yourwebsite/mrtg/jnos/mrtg.log /var/www/htdocs/yourwebsite/mrtg/jnos/mrtg.cfg
#
# The pretty pictures are generated every 15 minutes
#
1,16,31,46 * * * * sh /var/www/htdocs/yourwebsite/mrtg/jnos/gengraph.sh
#
4) Configure snmpd in JNOS - autoexec.nos
-------------------------------------
#
snmp ro password 192.168.1.
snmp ro password WWW.XXX.YY.ZZZ
#
start snmpd
#
5) Reference your pretty pictures in a status page or something
------------------------------------------------------------
Local RF traffic for my system
Wormhole traffic for my system
