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#!/bin/bash
INTERVAL="1" # update interval in seconds
if [ -z "$1" ]; then
echo
echo "example: plugin.sh HOSTNAME system interface_name time warning_mbit/s critical_mbit/s total mbit/s;"
echo
echo "./check_bandwidth.sh localhost linux eth0 15 80 90 100"
echo "./check_bandwidth.sh switchname cisco GigabitEthernet0/1 15 80 90 100 127.0.0.1 C00muN1d4Dd"
exit
fi
name=$1
system=$2
IF=$3
sec=$4
warn=$5
crit=$6
iface_speed=$7
ip=$8
community=C00muN1d4Dd
#$9
current_pid=$$
bin_ps=`which ps`
bin_grep=`which grep`
bin_expr=`which expr`
bin_cat=`which cat`
bin_tac=`which tac`
bin_sort=`which sort`
bin_wc=`which wc`
bin_awk=`which awk`
#bin_snmpwalk=`which snmpwalk`
interfaces_oid=1.3.6.1.2.1.2.2.1.2
if [ "$system" = "cisco" ];
then
if_index=`$bin_snmpwalk -c $community -v 2c $ip $interfaces_oid | grep $IF | sed 's/^.*\.//;s/\ .*$//'`
pidfile=/tmp/"$name"_"$if_index"_check_bandwidth.pid
fi
if [ "$system" = "linux" ];
then
pidfile=/tmp/"$name"_"$IF"_check_bandwidth.pid
fi
if [ -f $pidfile ];
then
echo "need to reduce the check duration or increase the interval between checks"
exit 1
else
echo $current_pid > $pidfile
fi
if [ "$system" = "linux" ];
then
tmpfile_rx=/tmp/"$name"_"$IF"_check_bandwidth_rx.tmp
tmpfile_tx=/tmp/"$name"_"$IF"_check_bandwidth_tx.tmp
reverse_tmpfile_rx=/tmp/"$name"_"$IF"_reverse_check_bandwidth_rx.tmp
reverse_tmpfile_tx=/tmp/"$name"_"$IF"_reverse_check_bandwidth_tx.tmp
deltafile_rx=/tmp/"$name"_"$IF"_delta_check_bandwidth_rx.tmp
deltafile_tx=/tmp/"$name"_"$IF"_delta_check_bandwidth_tx.tmp
elif [ "$system" = "cisco" ];
then
tmpfile_rx=/tmp/"$name"_"$if_index"_check_bandwidth_rx.tmp
tmpfile_tx=/tmp/"$name"_"$if_index"_check_bandwidth_tx.tmp
reverse_tmpfile_rx=/tmp/"$name"_"$if_index"_reverse_check_bandwidth_rx.tmp
reverse_tmpfile_tx=/tmp/"$name"_"$if_index"_reverse_check_bandwidth_tx.tmp
deltafile_rx=/tmp/"$name"_"$if_index"_delta_check_bandwidth_rx.tmp
deltafile_tx=/tmp/"$name"_"$if_index"_delta_check_bandwidth_tx.tmp
laststate_file=/tmp/"$name"_"$if_index"_laststate.tmp
fi
warn_kbits=`$bin_expr $warn '*' 1000000`
crit_kbits=`$bin_expr $crit '*' 1000000`
iface_speed_kbits=`$bin_expr $iface_speed '*' 1000000`
if [ "$system" = "linux" ];
then
START_TIME=`date +%s`
n=0
while [ $n -lt $sec ]
do
cat /sys/class/net/$3/statistics/rx_bytes >> $tmpfile_rx
cat /sys/class/net/$3/statistics/tx_bytes >> $tmpfile_tx
sleep $INTERVAL
let "n = $n + 1"
done
FINISH_TIME=`date +%s`
$bin_cat $tmpfile_rx | $bin_sort -nr > $reverse_tmpfile_rx
$bin_cat $tmpfile_tx | $bin_sort -nr > $reverse_tmpfile_tx
while read line;
do
if [ -z "$RBYTES" ];
then
RBYTES=`cat /sys/class/net/$3/statistics/rx_bytes`
$bin_expr $RBYTES - $line >> $deltafile_rx;
else
$bin_expr $RBYTES - $line >> $deltafile_rx;
fi
RBYTES=$line
done < $reverse_tmpfile_rx
while read line;
do
if [ -z "$TBYTES" ];
then
TBYTES=`cat /sys/class/net/$3/statistics/tx_bytes`
$bin_expr $TBYTES - $line >> $deltafile_tx;
else
$bin_expr $TBYTES - $line >> $deltafile_tx;
fi
TBYTES=$line
done < $reverse_tmpfile_tx
while read line;
do
SUM_RBYTES=`$bin_expr $SUM_RBYTES + $line`
done < $deltafile_rx
while read line;
do
SUM_TBYTES=`$bin_expr $SUM_TBYTES + $line`
done < $deltafile_tx
let "DURATION = $FINISH_TIME - $START_TIME"
let "RBITS_SEC = ( $SUM_RBYTES * 8 ) / $DURATION"
let "TBITS_SEC = ( $SUM_TBYTES * 8 ) / $DURATION"
if [ $RBITS_SEC -lt $warn_kbits -o $TBITS_SEC -lt $warn_kbits ]
then
data_output_r=`echo "$RBITS_SEC 1000000" | $bin_awk '{ printf ("%.2f", $1/$2); }'`
data_output_t=`echo "$TBITS_SEC 1000000" | $bin_awk '{ printf ("%.2f", $1/$2); }'`
percent_output_r=`echo "$RBITS_SEC $iface_speed_kbits 100" | $bin_awk '{ printf ("%.2f", $1/$2*$3); }'`
percent_output_t=`echo "$TBITS_SEC $iface_speed_kbits 100" | $bin_awk '{ printf ("%.2f", $1/$2*$3); }'`
nagvis_perfdata_r="InUsage=$percent_output_r%;$warn_kbits;$crit_kbits"
nagvis_perfdata_t="OutUsage=$percent_output_t%;$warn_kbits;$crit_kbits"
pnp4nagios_perfdata_r="in=$RBITS_SEC;$warn_kbits;$crit_kbits"
pnp4nagios_perfdata_t="in=$TBITS_SEC;$warn_kbits;$crit_kbits"
output="IN $data_output_r Mbit/s OUT $data_output_t Mbit/s - OK, period $DURATION sec | $nagvis_perfdata_r $nagvis_perfdata_t inBandwidth="$data_output_r"Mbs outBandwidth="$data_output_t"Mbs $pnp4nagios_perfdata_r $pnp4nagios_perfdata_t"
exitstatus=0
elif [ $RBITS_SEC -ge $warn_kbits -a $RBITS_SEC -le $crit_kbits ] || [ $TBITS_SEC -ge $warn_kbits -a $TBITS_SEC -le $crit_kbits ];
then
data_output_r=`echo "$RBITS_SEC 1000000" | $bin_awk '{ printf ("%.2f", $1/$2); }'`
data_output_t=`echo "$TBITS_SEC 1000000" | $bin_awk '{ printf ("%.2f", $1/$2); }'`
percent_output_r=`echo "$RBITS_SEC $iface_speed_kbits 100" | $bin_awk '{ printf ("%.2f", $1/$2*$3); }'`
percent_output_t=`echo "$TBITS_SEC $iface_speed_kbits 100" | $bin_awk '{ printf ("%.2f", $1/$2*$3); }'`
nagvis_perfdata_r="InUsage=$percent_output_r%;$warn_kbits;$crit_kbits"
nagvis_perfdata_t="OutUsage=$percent_output_t%;$warn_kbits;$crit_kbits"
pnp4nagios_perfdata_r="in=$RBITS_SEC;$warn_kbits;$crit_kbits"
pnp4nagios_perfdata_t="in=$TBITS_SEC;$warn_kbits;$crit_kbits"
output="IN $data_output_r Mbit/s OUT $data_output_t Mbit/s WARNING! period $DURATION sec | $nagvis_perfdata_r $nagvis_perfdata_t inBandwidth="$data_output_r"Mbs outBandwidth="$data_output_t"Mbs $pnp4nagios_perfdata_r $pnp4nagios_perfdata_t"
exitstatus=1
elif [ $RBITS_SEC -gt $warn_kbits -o $TBITS_SEC -gt $warn_kbits ]
then
data_output_r=`echo "$RBITS_SEC 1000000" | $bin_awk '{ printf ("%.2f", $1/$2); }'`
data_output_t=`echo "$TBITS_SEC 1000000" | $bin_awk '{ printf ("%.2f", $1/$2); }'`
percent_output_r=`echo "$RBITS_SEC $iface_speed_kbits 100" | $bin_awk '{ printf ("%.2f", $1/$2*$3); }'`
percent_output_t=`echo "$TBITS_SEC $iface_speed_kbits 100" | $bin_awk '{ printf ("%.2f", $1/$2*$3); }'`
nagvis_perfdata_r="InUsage=$percent_output_r%;$warn_kbits;$crit_kbits"
nagvis_perfdata_t="OutUsage=$percent_output_t%;$warn_kbits;$crit_kbits"
pnp4nagios_perfdata_r="in=$RBITS_SEC;$warn_kbits;$crit_kbits"
pnp4nagios_perfdata_t="in=$TBITS_SEC;$warn_kbits;$crit_kbits"
output="IN $data_output_r Mbit/s OUT $data_output_t Mbit/s CRITICAL! period $DURATION sec | $nagvis_perfdata_r $nagvis_perfdata_t inBandwidth="$data_output_r"Mbs outBandwidth="$data_output_t"Mbs $pnp4nagios_perfdata_r $pnp4nagios_perfdata_t"
exitstatus=2
else
output="unknown status"
exitstatus=3
fi
elif [ "$system" = "cisco" ];
then
START_TIME=`date +%s`
n=0
rx_tag=1
tx_tag=1
rx_old=0
tx_old=0
while [ $n -lt $sec -a $rx_tag -eq 1 -a $tx_tag -eq 1 ];
do
rx_now=`$bin_snmpwalk -c $community -v 2c -Oqv $ip 1.3.6.1.2.1.2.2.1.10.$if_index`
if [ $rx_now -ge $rx_old ];
then
rx_tag=1
if [ $rx_now -gt $rx_old ];
then
echo $rx_now >> $tmpfile_rx
fi
else
rx_tag=0
fi
rx_old=$rx_now
tx_now=`$bin_snmpwalk -c $community -v 2c -Oqv $ip 1.3.6.1.2.1.2.2.1.16.$if_index`
if [ $tx_now -ge $tx_old ];
then
tx_tag=1
if [ $tx_now -gt $tx_old ];
then
echo $tx_now >> $tmpfile_tx
fi
else
tx_tag=0
fi
tx_old=$tx_now
sleep $INTERVAL
let "n = $n + 1"
done
FINISH_TIME=`date +%s`
data_lines_rx=`$bin_cat $tmpfile_rx | $bin_wc -l`
data_lines_tx=`$bin_cat $tmpfile_tx | $bin_wc -l`
if [ $data_lines_rx -le 1 -o $data_lines_rx -le 1 ];
then
output=`$bin_cat $laststate_file`
echo $output
rm -f $tmpfile_rx
rm -f $tmpfile_tx
rm -f $pidfile
exit 0
fi
$bin_tac $tmpfile_rx > $reverse_tmpfile_rx
$bin_tac $tmpfile_tx > $reverse_tmpfile_tx
while read line;
do
if [ -z "$ROCTETS" ];
then
ROCTETS=$line
else
$bin_expr $ROCTETS - $line >> $deltafile_rx;
fi
ROCTETS=$line
done < $reverse_tmpfile_rx
while read line;
do
if [ -z "$TOCTETS" ];
then
TOCTETS=$line
else
$bin_expr $TOCTETS - $line >> $deltafile_tx;
fi
TOCTETS=$line
done < $reverse_tmpfile_tx
while read line;
do
SUM_ROCTETS=`$bin_expr $SUM_ROCTETS + $line`
done < $deltafile_rx
while read line;
do
SUM_TOCTETS=`$bin_expr $SUM_TOCTETS + $line`
done < $deltafile_tx
let "DURATION = $FINISH_TIME - $START_TIME"
let "RBITS_SEC = ( $SUM_ROCTETS * 8 ) / $DURATION"
let "TBITS_SEC = ( $SUM_TOCTETS * 8 ) / $DURATION"
#debug block start
if [ $RBITS_SEC -lt 0 ];
then
timestamp=`date +%H%M%S`
cp $tmpfile_rx "$tmpfile_rx"_"$timestamp"
cp $reverse_tmpfile_rx "$reverse_tmpfile_rx"_"$timestamp"
cp $deltafile_rx "$deltafile_rx"_"$timestamp"
fi
if [ $TBITS_SEC -lt 0 ];
then
timestamp=`date +%H%M%S`
cp $tmpfile_tx "$tmpfile_tx"_"$timestamp"
cp $reverse_tmpfile_tx "$reverse_tmpfile_tx"_"$timestamp"
cp $deltafile_tx "$deltafile_tx"_"$timestamp"
fi
#debug block finish
if [ $RBITS_SEC -lt $warn_kbits -o $TBITS_SEC -lt $warn_kbits ]
then
data_output_r=`echo "$RBITS_SEC 1000000" | $bin_awk '{ printf ("%.2f", $1/$2); }'`
data_output_t=`echo "$TBITS_SEC 1000000" | $bin_awk '{ printf ("%.2f", $1/$2); }'`
percent_output_r=`echo "$RBITS_SEC $iface_speed_kbits 100" | $bin_awk '{ printf ("%.2f", $1/$2*$3); }'`
percent_output_t=`echo "$TBITS_SEC $iface_speed_kbits 100" | $bin_awk '{ printf ("%.2f", $1/$2*$3); }'`
nagvis_perfdata_r="InUsage=$percent_output_r%;$warn_kbits;$crit_kbits"
nagvis_perfdata_t="OutUsage=$percent_output_t%;$warn_kbits;$crit_kbits"
pnp4nagios_perfdata_r="in=$RBITS_SEC;$warn_kbits;$crit_kbits"
pnp4nagios_perfdata_t="in=$TBITS_SEC;$warn_kbits;$crit_kbits"
output="IN $data_output_r Mbit/s OUT $data_output_t Mbit/s - OK, period $DURATION sec | $nagvis_perfdata_r $nagvis_perfdata_t inBandwidth="$data_output_r"Mbs outBandwidth="$data_output_t"Mbs $pnp4nagios_perfdata_r $pnp4nagios_perfdata_t"
echo $output > $laststate_file
exitstatus=0
elif [ $RBITS_SEC -ge $warn_kbits -a $RBITS_SEC -le $crit_kbits ] || [ $TBITS_SEC -ge $warn_kbits -a $TBITS_SEC -le $crit_kbits ];
then
data_output_r=`echo "$RBITS_SEC 1000000" | $bin_awk '{ printf ("%.2f", $1/$2); }'`
data_output_t=`echo "$TBITS_SEC 1000000" | $bin_awk '{ printf ("%.2f", $1/$2); }'`
percent_output_r=`echo "$RBITS_SEC $iface_speed_kbits 100" | $bin_awk '{ printf ("%.2f", $1/$2*$3); }'`
percent_output_t=`echo "$TBITS_SEC $iface_speed_kbits 100" | $bin_awk '{ printf ("%.2f", $1/$2*$3); }'`
nagvis_perfdata_r="InUsage=$percent_output_r%;$warn_kbits;$crit_kbits"
nagvis_perfdata_t="OutUsage=$percent_output_t%;$warn_kbits;$crit_kbits"
pnp4nagios_perfdata_r="in=$RBITS_SEC;$warn_kbits;$crit_kbits"
pnp4nagios_perfdata_t="in=$TBITS_SEC;$warn_kbits;$crit_kbits"
output="IN $data_output_r Mbit/s OUT $data_output_t Mbit/s WARNING! period $DURATION sec | $nagvis_perfdata_r $nagvis_perfdata_t inBandwidth="$data_output_r"Mbs outBandwidth="$data_output_t"Mbs $pnp4nagios_perfdata_r $pnp4nagios_perfdata_t"
echo $output > $laststate_file
exitstatus=1
elif [ $RBITS_SEC -gt $warn_kbits -o $TBITS_SEC -gt $warn_kbits ]
then
data_output_r=`echo "$RBITS_SEC 1000000" | $bin_awk '{ printf ("%.2f", $1/$2); }'`
data_output_t=`echo "$TBITS_SEC 1000000" | $bin_awk '{ printf ("%.2f", $1/$2); }'`
percent_output_r=`echo "$RBITS_SEC $iface_speed_kbits 100" | $bin_awk '{ printf ("%.2f", $1/$2*$3); }'`
percent_output_t=`echo "$TBITS_SEC $iface_speed_kbits 100" | $bin_awk '{ printf ("%.2f", $1/$2*$3); }'`
nagvis_perfdata_r="InUsage=$percent_output_r%;$warn_kbits;$crit_kbits"
nagvis_perfdata_t="OutUsage=$percent_output_t%;$warn_kbits;$crit_kbits"
pnp4nagios_perfdata_r="in=$RBITS_SEC;$warn_kbits;$crit_kbits"
pnp4nagios_perfdata_t="in=$TBITS_SEC;$warn_kbits;$crit_kbits"
output="IN $data_output_r Mbit/s OUT $data_output_t Mbit/s CRITICAL! period $DURATION sec | $nagvis_perfdata_r $nagvis_perfdata_t inBandwidth="$data_output_r"Mbs outBandwidth="$data_output_t"Mbs $pnp4nagios_perfdata_r $pnp4nagios_perfdata_t"
echo $output > $laststate_file
exitstatus=2
else
output="unknown status"
exitstatus=3
fi
else
output="incorrect system!"
exitstatus=3
fi
rm -f $tmpfile_rx
rm -f $reverse_tmpfile_rx
rm -f $deltafile_rx
rm -f $tmpfile_tx
rm -f $reverse_tmpfile_tx
rm -f $deltafile_tx
rm -f $pidfile
echo "$output"
exit $exitstatus