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contrib-munin/plugins/network/ip_forward_
nukleus 471311dfaf Update plugins/network/ip_forward_
Fix typos in plugins/network/ip_forward_
2012-11-17 19:18:47 +00:00

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#!/bin/sh
#
# Wildcard-plugin to monitor forward traffic for network interfaces through iptables. To monitor an
# interface, link if_forward_<interface> to this file. E.g.
#
# ln -s /usr/share/node/node/plugins-auto/if_forward_ /etc/munin/node.d/if_forward_eth0
#
# ...will monitor forwarded traffic trough eth0.
#
# Aditionally, you need these iptables rules as the first rules (they don't do anything, just make packet counts)
#
# iptables -A FORWARD -i eth0
# iptables -A FORWARD -o eth0
#
# Furthermore, this plugin needs to be run as root for iptables to work
#
# This plugin is based on the if_ and ip_ plugin.
#
# Magic markers (optional - used by munin-config and some installation
# scripts):
#
#%# family=auto
#%# capabilities=autoconf suggest
IF=`basename $0 | sed 's/^if_forward_//g'`
if [ "$1" = "autoconf" ]; then
if [ -r /proc/net/dev ]; then
iptables-save -c >/dev/null 2>/dev/null
if [ $? -gt 0 ]; then
echo "no (could not run iptables-save as user `whoami`)"
exit 1
else
echo yes
exit 0
fi
else
echo "no (/proc/net/dev not found)"
exit 1
fi
fi
if [ "$1" = "suggest" ]; then
if [ -r /proc/net/dev ]; then
egrep '^ *(eth|wlan|ath|ra)[0-9]+:' /proc/net/dev | cut -f1 -d: | sed 's/ //g'
exit 0
else
exit 1
fi
fi
if [ "$1" = "config" ]; then
echo "graph_order out in"
echo "graph_title $IF forwarded traffic"
echo 'graph_args --base 1000'
echo 'graph_vlabel bits per ${graph_period}'
echo 'graph_category network'
echo "graph_info This graph shows only FORWARD traffic that pass through the interface."
echo 'out.label sent'
echo 'out.type DERIVE'
echo 'out.min 0'
echo 'out.cdef out,8,*'
echo 'in.label received'
echo 'in.type DERIVE'
echo 'in.min 0'
echo 'in.cdef in,8,*'
exit 0
fi;
iptables-save -c | grep $IF | grep i | cut -f2 -d':' | cut -f1 -d']' | awk "{ print \"in.value \" \$0 }"
iptables-save -c | grep $IF | grep o | cut -f2 -d':' | cut -f1 -d']' | awk "{ print \"out.value \" \$0 }"