Récupération check_linux_memory.sh depuis https://github.com/hugme/Nag_checks/commits/master

(hope to owe you a lunch :)

nagios/check_linux_memory.sh

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+#!/bin/sh
+#
+# Plugin to check system memory
+# by hugme (nagios@hugme.org)
+# You can find my checks here: https://github.com/hugme/Nag_checks
+# Nagios script to check memory usage on linux server
+# version 1.3.0
+#
+##########################################################
+
+MEMINFO="/proc/meminfo"
+
+##########################################################
+# We call them functions because they're fun
+##########################################################
+
+print_help() {
+cat << EOF
+Linux Memory Plugin for Nagios
+Copyright (c) hugme (nagios@hugme.org)
+Version: 1.2.0
+Last Modified: 10-07-2014
+License: This software can be used for free unless I meet you, then you owe me lunch.
+
+Usage: check_linux_memory -w [warning %] -c [critical %]
+
+Options:
+ -w [0-99]		= Your warning %. 20 means 20% of your memory can remain before a warning alarm. Do not use the % sign.
+ -c [0-99]		= Your critical %. 10 means 10% of your memory can remain before a critical alarm. Do not use the % sign.
+ -d [K,M,G,T]	= divider K=kilobytes, M=megabytes, G=gigabytes, T=terabytes
+ -f		= Included for backwards compatability to older verserions
+ -n		= Don't Include cached memory as free memory when calculating your percentage free
+EOF
+	}
+
+invalid_type() {
+	echo "\nInvalid $1\n"
+	print_help
+	exit 3
+	}
+
+##############################################
+## Suck in the user input
+##############################################
+
+
+while test -n "$1"; do
+ case $1 in
+  --help) print_help ; exit 0 ;;
+  -h) print_help ; exit 0 ;;
+  -w) WARN="$2"; shift ;;
+  -c) CRIT="$2"; shift ;;
+  -d) DIV="$2"; shift ;;
+  -n) NC=1 ;;
+ esac
+ shift
+done
+
+##############################################
+## Set the defaults if needed
+##############################################
+
+[ -z "$WARN" ] && WARN=20
+[ -z "$CRIT" ] && CRIT=10
+[ -z "$DIV" ] && DIV=M
+[ -z "$FC" ] && FC=0
+
+##############################################
+## Check user input
+##############################################
+
+[ ! -z `echo $WARN | tr -d [:digit:]` ] && invalid_type "Warning: Warning value can only contain numbers"
+[ ! -z `echo $CRIT | tr -d [:digit:]` ] && invalid_type "Critical: Critical value can only contain numbers"
+[ "${WARN%.*}" -ge 100 ] && invalid_type "Warning: Warning must be smaller than 100%"
+[ "${CRIT%.*}" -ge 100 ] && invalid_type "Critical: Critical must be smaller than 100%"
+[ "${CRIT%.*}" -gt "${WARN%.*}" ] && invalid_type "Critical: Your Warning must be Higher than your Critical"
+
+case $DIV in
+	k|K) DIVNUM=1;;
+	m|M) DIVNUM=1024;;
+	g|G) DIVNUM=1048576;;
+	t|T) DIVNUM=1073741824;;
+	*) invalid_type;;
+esac
+
+[ ! -f "$MEMINFO" ] && {
+	echo "Your Memory info file seems to be missing"
+	exit 1
+	}
+
+##############################################
+## Do the work
+## Pull the memory file into awk
+## grab the lines we need
+## Print the information
+##############################################
+
+RESULT=$(awk -v warn=$WARN -v crit=$CRIT -v div=$DIV -v divnum=$DIVNUM -v nc=$NC '/^MemTotal:/ { total=$2 }
+/^MemTotal:/ { tot=$2 }
+/^MemFree:/ { free=$2 }
+/^Buffers:/ { buff=$2 }
+/^Cached:/ { cache=$2 }
+/^Active:/ { active=$2 }
+/^Inactive:/ { inactive=$2 }
+END { if ( nc != 1 ) { free=free+cache+buff }
+	{ freeperct=free/tot*100 }
+	if ( freeperct > warn ) { result="OK" ; xit="0"}
+	if ( freeperct <= warn ) {
+		if ( freeperct > crit ) { result="WARNING" ; xit="1" }
+		else if ( freeperct <= crit ) { result="CRITICAL" ; xit="2" }
+		}
+	{print xit" MEMORY "result" - "freeperct"% Free - Total:"tot/divnum div" Active:"active/divnum div" Inactive:"inactive/divnum div" Buffers:"buff/divnum div" Cached:"cache/divnum div" |Free="freeperct";"warn";"crit";0 Active="active";0;0;0 Inactive="inactive";0;0;0 Buffers="buff";0;0;0 Cached="cache";0;0;0" }
+	}' /proc/meminfo)
+
+echo ${RESULT#* }
+exit ${RESULT%% *}
+