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File name : a2_nf_conntrack_count.sh.all

Content :#!/bin/bash # # Monitors NF conntrack value # SYSENG-14373 # _chk_name="nf_conntrack_monitor" _nf_warn="50" _nf_crit="75" if [[ ! -f /proc/sys/net/netfilter/nf_conntrack_count || ! -f /proc/sys/net/netfilter/nf_conntrack_max ]]; then echo "nf_conntrack - nf_conntrack module does not appear to be loaded!" exit 2 else _nfcount=$(cat /proc/sys/net/netfilter/nf_conntrack_count) _nfmax=$(cat /proc/sys/net/netfilter/nf_conntrack_max) _nf_warn_value=$(( _nfmax * _nf_warn / 100 )) _nf_crit_value=$(( _nfmax * _nf_crit / 100 )) _percentage_count=$(( _nfcount * 100 / _nfmax )) if [[ ${_percentage_count} -gt ${_nf_crit} ]]; then echo "nf_conntrack_count - ${_nfcount} NFconntrack is getting full (${_percentage_count}%) :sadserver:, please investigate." exit 2 elif [[ ${_percentage_count} -gt ${_nf_warn} ]]; then echo "nf_conntrack_count - ${_nfcount} WARN" exit 1 else echo "nf_conntrack_count - ${_nfcount} OK" exit 0 fi fi

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