mirror of
https://github.com/munin-monitoring/contrib.git
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144 lines
3.7 KiB
Bash
Executable file
144 lines
3.7 KiB
Bash
Executable file
#!/bin/bash
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# Now updated to support 32-bit operating systems
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# Requires bash
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: << =cut
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bandwidth_ - Wildcard-plugin to monitor total network traffic and
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predict 30 day bandwidth usage
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=head1 CONFIGURATION
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This is a wildcard plugin. To monitor an interface, link
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bandwidth_<interface> to this file. E.g.
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ln -s /usr/share/munin/node/plugins-auto/bandwidth_ \
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/etc/munin/node.d/bandwidth_eth0
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...will monitor eth0
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Most likely usage is to monitor an interface connected to your ISP.
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=head1 USAGE
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Any device found in /proc/net/dev can be monitored. Examples include ipsec*,
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eth*, irda* and lo.
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Please not that aliases cannot be monitored with this plugin.
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=head1 VERSION
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$Id: bandwidth_,v 1.2 2011/09/16 17:54:50 root Exp $
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=head1 AUTHOR
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Sean Whitney
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=head1 LICENSE
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GPLv2
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=head1 MAGIC MARKERS
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#%# family=contrib
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#%# capabilities=autoconf suggest
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=head1 BUGS
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I know that bandwidth is bits and base10 as opposed to bytes and base2.
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However the purpose of this plugin it to monitor your monthly bandwidth
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consumption to make sure you don't go over your ISP's peak. ISP's seem
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to be interested in expressing peaks in bytes....
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=cut
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# Change to show your outside interface
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INTERFACE=${0##*bandwidth_}
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HISTORY="/var/lib/munin/plugin-state/bandwidth_$INTERFACE.state"
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TOTALUPTIME=0
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TOTALINPUT=0
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TOTALOUTPUT=0
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OLDUPTIME=0
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OLDINPUT=0
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OLDOUTPUT=0
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test -f $HISTORY || touch $HISTORY
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BC=$(which bc)
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test ${#BC} || (echo "bc not found, please install bc" && exit 1)
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case $1 in
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# I know that "bandwidth is bits and base10 as opposed to bytes and base2.
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# However the purpose of this plugin it to monitor your monthly bandwidth
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# consumption to make sure you don't go over your ISP's peak. ISP's seem
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# to be interested in expressing peaks in bytes....
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config)
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cat <<'EOM'
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graph_title Monthly Bandwidth average
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graph_vlabel Bytes
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average.label current average
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monthly.label monthly projection
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average.info Your average bandwidth usage based on uptime
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monthly.info Your projected monthly bandwidth usage based on uptime
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graph_category network
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graph_args --base 1024 -l 0
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graph_info This graph show your current average bandwidth usage and projected 30 day average based on your current consumption
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average.warning 8944269393.92
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monthly.warning 268435456000
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EOM
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exit 0;;
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esac
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source $HISTORY
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INPUT=$(ifconfig $INTERFACE|grep bytes|awk '{print $2}'|sed s/bytes://g)
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OUTPUT=$(ifconfig $INTERFACE|grep bytes|awk '{print $6}'|sed s/bytes://g)
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UPTIME=$(cat /proc/uptime | cut -d'.' -f1-1)
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# Dealing with a reboot. I'm not worrying about a uptime rollover.
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# Evidently uptime is 64-bit even on 32-bit machines using "jiffies".
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if [[ $OLDUPTIME -gt $UPTIME ]]; then
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TOTALUPTIME=$(($TOTALUPTIME+$UPTIME))
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TOTALINPUT=$(($TOTALINPUT+$INPUT))
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TOTALOUTPUT=$(($TOTALOUTPUT+$OUTPUT))
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# Dealing with a 32-bit counter rollover. This is detected by comparing
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# The last value with the new value and the uptime. Else update normally
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else
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TOTALUPTIME=$(($TOTALUPTIME+$UPTIME-$OLDUPTIME))
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if [[ $OLDINPUT -gt $INPUT ]]; then
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TOTALINPUT=$(($TOTALINPUT+$INPUT))
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else
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TOTALINPUT=$((TOTALINPUT+$INPUT-$OLDINPUT))
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fi
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if [[ $OLDOUTPUT -gt $OUTPUT ]]; then
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TOTALOUTPUT=$((TOTALOUTPUT+$OUTPUT))
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else
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TOTALOUTPUT=$((TOTALOUTPUT+$OUTPUT-$OLDOUTPUT))
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fi
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fi
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TOTAL=$(($TOTALINPUT+$TOTALOUTPUT))
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UPV=$(echo "scale=3;$TOTALUPTIME/60/60/24"|bc)
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DAILY=$(echo "scale=3;$TOTAL/$UPV"|bc)
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MONTHLY=$(echo "scale=3;$DAILY*30"|bc)
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echo "TOTALUPTIME=$TOTALUPTIME" > $HISTORY
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echo "OLDUPTIME=$UPTIME" >> $HISTORY
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echo "TOTALINPUT=$TOTALINPUT" >> $HISTORY
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echo "OLDINPUT=$INPUT" >> $HISTORY
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echo "TOTALOUTPUT=$TOTALOUTPUT" >> $HISTORY
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echo "OLDOUTPUT=$OUTPUT" >> $HISTORY
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echo "average.value $DAILY"
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echo "monthly.value $MONTHLY"
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