Sha256: e57a9b84b04cecc614908ee474326204fee9023f24420aa5a69f068dcf60181b
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Versions: 12
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Stored size: 1.13 KB
Contents
#!/bin/bash
#
# Check Net Filter Connection Track Table Usage
# ===
#
# DESCRIPTION:
# This plugin provides a method for monitoring the percentage used of the nf_conntrack hash
#
# OUTPUT:
# plain-text
#
# PLATFORMS:
# Linux
#
# DEPENDENCIES:
#
# Copyright 2014 Yieldbot, Inc <devops@yieldbot.com>
#
# Released under the same terms as Sensu (the MIT license); see LICENSE
# for details.
# CLI Options
while getopts ':w:c:' OPT; do
case $OPT in
w) WARN=$OPTARG;;
c) CRIT=$OPTARG;;
esac
done
WARN=${WARN:=100}
CRIT=${CRIT:=100}
# Get the max connections
MAX=$(sysctl net.netfilter.nf_conntrack_max | awk '{ print $3 }')
# Get the current connections
CURR=$(sysctl net.netfilter.nf_conntrack_count | awk '{ print $3 }')
# Percent usage of conncetions
PERCENT=$(echo "scale=3; $CURR / $MAX *100" | bc -l | cut -d "." -f1)
# If percent isnt defined set it to 0
PERCENT=${PERCENT:=0}
if [[ $PERCENT -ge $CRIT ]] ; then
echo "NETFILTER CONNTRACK CRITICAL - $PERCENT"
exit 2
elif [[ $PERCENT -ge $WARN ]] ; then
echo "NETFILTER CONNTRACK WARNING - $PERCENT"
exit 1
else
echo "NETFILTER CONNTRACK OK - $PERCENT"
exit 0
fi
Version data entries
12 entries across 12 versions & 1 rubygems