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arp: simple plugins to monitor a hosts ARP cache

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Sven Hartge 2012-04-20 00:49:14 +02:00
parent d74cd5d8e9
commit fec8686c4e
2 changed files with 99 additions and 0 deletions
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43
plugins/arp/arp Executable file
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#!/bin/sh
#
# Plugin to monitor total ARP entries
#
# Parameters understood:
#
# config (required)
# autoconf (optional)
#
# Made by Sven Hartge (sven AT svenhartge DOT de)
#
#%# family=contrib
#%# capabilities=autoconf
if [ "$1" = "autoconf" ]; then
# Search for arp
which arp >/dev/null 2>/dev/null || (echo "no (can't find arp binary)" && exit 1)
# ...or success
echo yes
exit 0
fi
if [ "$1" = "config" ]; then
echo 'graph_title ARP entries'
echo 'graph_args --base 1000 -l 0'
echo 'graph_vlabel Entries'
echo 'graph_category network'
echo 'graph_scale no'
echo 'graph_info This graph shows the number of ARP entries registered by the system.'
echo 'entries.label ARP entries'
echo 'entries.draw LINE2'
echo 'entries.type GAUGE'
echo 'entries.info Number of ARP entries'
exit 0
fi
echo -n "entries.value "
arp -an | grep -v "incomplete" | awk '{ print $4; }' | sort -u | wc -l

56
plugins/arp/arp_ Executable file
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#!/bin/sh
#
# Plugin to monitor ARP entries per interface
#
# Parameters understood:
#
# config (required)
# autoconf (optional)
#
# Made by Sven Hartge (sven AT svenhartge DOT de)
#
#
#%# family=contrib
#%# capabilities=autoconf suggest
INTERFACE=`basename $0 | sed 's/^arp_//g' | tr '_' '.'`
if [ "$1" = "autoconf" ]; then
# Search for arp
which arp >/dev/null 2>/dev/null || (echo "no (can't find arp binary)" && exit 1)
# ...or success
echo yes
exit 0
fi
if [ "$1" = "suggest" ]; then
if [ -r /proc/net/dev ]; then
egrep '^ *(eth|wlan|ath|ra)[0-9]+(\.[0-9]+)?:' /proc/net/dev | cut -f1 -d: | sed 's/ //g' | tr '.' '_'
exit 0
else
exit 1
fi
fi
if [ "$1" = "config" ]; then
echo "graph_title ARP entries for $INTERFACE"
echo 'graph_args --base 1000 -l 0'
echo 'graph_vlabel Entries'
echo 'graph_category network'
echo 'graph_scale no'
echo "graph_info This graph shows the number of ARP entries registered by the system for interface $INTERFACE."
echo 'entries.label ARP entries'
echo 'entries.draw LINE2'
echo 'entries.type GAUGE'
echo 'entries.info Number of ARP entries'
exit 0
fi
echo -n "entries.value "
arp -an -i $INTERFACE | grep -v "incomplete" | awk '{ print $4; }' | sort -u | wc -l