#!/bin/csh

# run this script ever 5 minutes via cron with a crontab something like:
# 1,6,11,16,21,26,31,36,41,46,51,56 * * * * /home/admin/pmgraph/bin/getstats
# note that this script calls MRTG

# set the names or IP's of your Portmasters
set Portmaster1="sconset.nantucket.net"
set Portmaster2="scallop.nantucket.net"
set Portmaster3="surfside.nantucket.net"

# set the SNMP read community of your Portmasters
set P1comm="public"
set P2comm="public"
set P3comm="public"
 
# Grab a user count for each Portmaster via the snmpwalk command
# You may need to use "snmpwalk -v 1" depending on your version of snmpwalk
# You may also need to grep for something other than "23"
set PM1=`snmpwalk $Portmaster1 $P1comm
interfaces.ifTable.ifEntry.ifType|grep 23 |wc -l`
set PM2=`snmpwalk $Portmaster2 $P2comm
interfaces.ifTable.ifEntry.ifType|grep 23 |wc -l`
set PM3=`snmpwalk $Portmaster3 $P3comm
interfaces.ifTable.ifEntry.ifType|grep 23 |wc -l`

# Get a grand total of users online 
@ TOTAL=$PM1 + $PM2 + $PM3

# MRTG needs 4 lines of input to be happy, we're only interested in the 2nd 
# line and possibly the first so we fill the others with junk

# write out the various logs
# grand total of all your Portmasters
        echo "0"    >  /home/admin/pmgraph/bin/pmgrand
        echo $TOTAL >> /home/admin/pmgraph/bin/pmgrand
        echo "0"    >> /home/admin/pmgraph/bin/pmgrand
        echo "0"    >> /home/admin/pmgraph/bin/pmgrand

# Portmaster #1
        echo "0"    >  /home/admin/pmgraph/bin/pm1-log
        echo $PM1   >> /home/admin/pmgraph/bin/pm1-log
        echo "time" >> /home/admin/pmgraph/bin/pm1-log
        echo "pm1"  >> /home/admin/pmgraph/bin/pm1-log

# Portmaster #2
        echo "0"    >  /home/admin/pmgraph/bin/pm2-log
        echo $PM2   >> /home/admin/pmgraph/bin/pm2-log
        echo "time" >> /home/admin/pmgraph/bin/pm2-log
        echo "pm2"  >> /home/admin/pmgraph/bin/pm2-log

# Portmaster #3
        echo "0"    >  /home/admin/pmgraph/bin/pm3-log
        echo $PM3   >> /home/admin/pmgraph/bin/pm3-log
        echo "time" >> /home/admin/pmgraph/bin/pm3-log
        echo "pm3"  >> /home/admin/pmgraph/bin/pm3-log

# and finally, run MRTG specifying our customized .cfg file
eval `/home/admin/pmgraph/bin/mrtg /home/admin/pmgraph/bin/portmaster.cfg`