initial commit

check_hddtemp.sh

@@ -0,0 +1,109 @@
+#!/bin/bash
+#
+# USAGE:
+# ./check_hddtemp.sh <device> <warn> <crit>
+# Nagios script to get the temperatue of HDD from hddtemp
+#
+# You may have to let nagios run this script as root
+# This is how the sudoers file looks in my debian system:
+# nagios  ALL=(root) NOPASSWD:/usr/lib/nagios/plugins/check_hddtemp.sh
+#
+# Version 1.0
+
+OK=0
+WARNING=1
+CRITICAL=2
+UNKNOWN=3
+
+function usage() {
+	echo "Usage: ./check_hddtemp.sh <device> <warn> <crit>"
+}
+
+function check_root() {
+	# make sure script is running as root
+	if [ `whoami` != root ]; then
+		echo "UNKNOWN: please make sure script is running as root"
+		exit $UNKNOWN
+	fi
+}
+
+function check_arg() {
+	# make sure you supplied all 3 arguments
+	if [ $# -ne 3 ]; then
+		usage
+		exit $OK
+	fi
+}
+
+function check_device() {
+	# make sure device is a special block
+	if [ ! -b $DEVICE ];then
+		echo "UNKNOWN: $DEVICE is not a block special file"
+		exit $UNKNOWN
+	fi
+}
+
+function check_warn_vs_crit() {
+	# make sure CRIT is larger than WARN
+	if [ $WARN -ge $CRIT ];then
+		echo "UNKNOWN: WARN value may not be greater than or equal the CRIT value"
+		exit $UNKNOWN
+	fi
+}
+
+
+function init() {
+	check_root
+	check_arg $*
+	check_device
+	check_warn_vs_crit
+}
+
+function get_hddtemp() {
+	# gets temperature and stores it in $HEAT
+	# and make sure we get a numeric output
+	if [ -x $HDDTEMP ];then
+		HEAT=`$HDDTEMP $DEVICE -n 2>/dev/null`
+		case "$HEAT" in
+		[0-9]* )
+			echo "do nothing" > /dev/null
+			;;
+		* )
+			echo "OK: Could not get temperature from: $DEVICE"
+			exit $OK
+			;;
+		esac
+	else
+		echo "UNKNOWN: cannot execute $HDDTEMP"
+		exit $UNKNOWN
+	fi
+}
+
+function check_heat() {
+	# checks temperature and replies according to $CRIT and $WARN
+	if [ $HEAT -lt $WARN ];then
+		echo "OK: Temperature is below warn treshold ($DEVICE is $HEAT)"
+		exit $OK
+	elif [ $HEAT -lt $CRIT ];then
+		echo "WARNING: Temperature is above warn treshold ($DEVICE is $HEAT)"
+		exit $WARNING
+	elif [ $HEAT -ge $CRIT ];then
+		echo "CRITICAL: Temperature is above crit treshold ($DEVICE is $HEAT)"
+		exit $CRITICAL
+	else
+		echo "UNKNOWN: This error message should never occur, if it does happen anyway, get a new cup of coffee and fix the code :)"
+		exit $UNKNOWN
+	fi
+		
+}
+
+# -- Main -- #
+
+HDDTEMP=/usr/sbin/hddtemp
+DEVICE=$1
+WARN=$2
+CRIT=$3
+
+init $*
+get_hddtemp
+check_heat