133 lines
3.7 KiB
Bash
133 lines
3.7 KiB
Bash
#!/bin/bash
|
|
|
|
# Munin plugin which reads the hourly, daily and monthly bandwidth usage.
|
|
#
|
|
# (c) 2011 Bram Schoenmakers <me@bramschoenmakers.nl>
|
|
|
|
#%# family=contrib
|
|
#%# capabilities=autoconf
|
|
|
|
# par1 message
|
|
error() {
|
|
[ $# = 1 ] && echo "$1" >&2
|
|
exit 1
|
|
}
|
|
|
|
# par1: "hourly", "daily" or "monthly"
|
|
# par2: "tx" or "rx"
|
|
getBandwidth() {
|
|
[ $# != 2 ] && exit 1
|
|
|
|
local FIELD=-1
|
|
[ $2 = "rx" ] && FIELD=4
|
|
[ $2 = "tx" ] && FIELD=5
|
|
|
|
[ "$FIELD" -eq -1 ] && exit 1
|
|
|
|
local DATA=$(echo "$VNSTAT" | grep "^${1:0:1};0")
|
|
local MIB=$(echo "$DATA" | cut -d ';' -f $FIELD)
|
|
local KIB=$(echo "$DATA" | cut -d ';' -f $(( $FIELD + 2 )) )
|
|
|
|
echo "scale=3; $MIB + ( $KIB / 1024 )" | bc
|
|
}
|
|
|
|
# par1: "hourly", "daily" or "monthly"
|
|
# par2: value so far
|
|
getEstimate() {
|
|
[ $# != 2 ] && exit 1
|
|
|
|
case "$1" in
|
|
"hourly")
|
|
local MINUTESPASSED=$(( $( date +%M ) ))
|
|
local MINUTESTOTAL=60
|
|
;;
|
|
"daily")
|
|
local MINUTESPASSED=$( echo "$( date +%H ) * 60 + $( date +%M )" | bc )
|
|
local MINUTESTOTAL=1440
|
|
;;
|
|
"monthly")
|
|
local MINUTESPASSED=$( echo "( $( date +%d ) - 1 ) * 1440 + $( date +%H ) * 60 + $( date +%M )" | bc )
|
|
local DAYSINMONTH=$(date -d "$(date +%Y)-$(($(date +%-m)+1))-01 -1 day" +%d)
|
|
local MINUTESTOTAL=$(( $DAYSINMONTH * 1440 ))
|
|
;;
|
|
esac
|
|
|
|
echo "scale=1; $MINUTESTOTAL * $2 / $MINUTESPASSED" | bc
|
|
}
|
|
|
|
PARAMS=${0#*vnstat_}
|
|
INTERFACE=$(echo "$PARAMS" | cut -d _ -f 1) # eth0
|
|
PERIOD=$(echo "$PARAMS" | cut -d _ -f 2) # hourly, daily, monthly
|
|
DIRECTION=$(echo "$PARAMS" | cut -d _ -f 3) # rx or tx
|
|
|
|
# determine whether estimates should be shown
|
|
[ \( "${estimate:-0}" = 1 \) -o \( "${estimate:-0}" = "yes" \) -o \( "${estimate:-0}" = "true" \) ] && ESTIMATE=1 || ESTIMATE=0
|
|
|
|
# sanity checks
|
|
[ "$PERIOD" = "hourly" ] || [ "$PERIOD" = "daily" ] || [ "$PERIOD" = "monthly" ] || error "Invalid period."
|
|
[ "$DIRECTION" = "rx" ] || [ "$DIRECTION" = "tx" ] || [ "$DIRECTION" = "total" ] || [ "$DIRECTION" = "rxtx" ] || error "Invalid direction."
|
|
|
|
case "$1" in
|
|
config)
|
|
echo graph_category network
|
|
echo graph_vlabel MiB
|
|
|
|
PERIODSTRING=${PERIOD%ly}
|
|
PERIODSTRING=${PERIODSTRING/dai/day}
|
|
if [ "$DIRECTION" = "rxtx" ]; then
|
|
echo "graph_title Network bandwidth for $INTERFACE ($PERIOD, rx and tx)"
|
|
echo value.label rx
|
|
echo value2.label tx
|
|
|
|
# show estimates
|
|
if [ $ESTIMATE -eq 1 ]; then
|
|
echo "estimate.label rx estimate for this $PERIODSTRING"
|
|
echo "estimate2.label tx estimate for this $PERIODSTRING"
|
|
fi
|
|
else
|
|
echo "graph_title Network bandwidth for $INTERFACE ($PERIOD, $DIRECTION)"
|
|
echo value.label $DIRECTION
|
|
[ $ESTIMATE -eq 1 ] && echo "estimate.label estimate for this ${PERIODSTRING}"
|
|
fi
|
|
|
|
exit 0;;
|
|
autoconf)
|
|
if ! which vnstat > /dev/null; then
|
|
echo "no (vnstat unavailable)"
|
|
elif ! which bc > /dev/null; then
|
|
echo "no (bc unavailable)"
|
|
else
|
|
echo yes
|
|
fi
|
|
|
|
exit 0
|
|
;;
|
|
esac
|
|
|
|
VNSTAT=$(vnstat -i $INTERFACE --dumpdb)
|
|
|
|
if [ "$DIRECTION" = "total" ] || [ "$DIRECTION" = "rxtx" ]; then
|
|
VALUE1=$(getBandwidth $PERIOD rx)
|
|
[ $? = 1 ] && error "Could not obtain data."
|
|
VALUE2=$(getBandwidth $PERIOD tx)
|
|
[ $? = 1 ] && error "Could not obtain data."
|
|
|
|
[ "$DIRECTION" = "total" ] && VALUE1=$( echo "scale=3; $VALUE1 + $VALUE2" | bc )
|
|
else
|
|
VALUE1=$(getBandwidth $PERIOD $DIRECTION)
|
|
[ $? = 1 ] && error "Could not obtain data."
|
|
fi
|
|
|
|
if [ "$DIRECTION" = "rxtx" ]; then
|
|
echo value.value $VALUE1
|
|
echo value2.value $VALUE2
|
|
|
|
if [ "$ESTIMATE" -eq 1 ]; then
|
|
echo estimate.value $(getEstimate $PERIOD $VALUE1)
|
|
echo estimate2.value $(getEstimate $PERIOD $VALUE2)
|
|
fi
|
|
else
|
|
echo value.value $VALUE1
|
|
[ "$ESTIMATE" -eq 1 ] && echo estimate.value $(getEstimate $PERIOD $VALUE1)
|
|
fi
|