Add check_temp
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check_temp
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295
check_temp
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#!/bin/bash
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################################################################################
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# #
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# Copyright (C) 2011 Jack-Benny Persson <jake@cyberinfo.se> #
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# #
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# This program is free software; you can redistribute it and/or modify #
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# it under the terms of the GNU General Public License as published by #
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# the Free Software Foundation; either version 2 of the License, or #
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# (at your option) any later version. #
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# #
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# This program is distributed in the hope that it will be useful, #
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# but WITHOUT ANY WARRANTY; without even the implied warranty of #
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
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# GNU General Public License for more details. #
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# #
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# You should have received a copy of the GNU General Public License #
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# along with this program; if not, write to the Free Software #
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA #
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# #
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################################################################################
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###############################################################################
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# #
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# Nagios plugin to monitor CPU and M/B temperature with sensors. #
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# Written in Bash (and uses sed & awk). #
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# Latest version of check_temp can be found at the below URL: #
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# https://github.com/jackbenny/check_temp #
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# #
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# If you are having problems getting it to work, check the instructions in #
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# the README first. It walks you though install lm-sensors and getting it to #
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# display sensor data. #
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# #
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###############################################################################
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VERSION="Version 1.2"
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AUTHOR="(c) 2011 Jack-Benny Persson (jack-benny@cyberinfo.se), (c) 2020 Onkobu Tanaake (oss@onkobutanaake.de)"
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# Sensor program
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SENSORPROG=$(whereis -b -B /{bin,sbin,usr} /{bin,sbin,usr}/* -f sensors | awk '{print $2}')
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# Ryan's note: utils.sh is installed with nagios-plugins in with the plugins
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# Check if utils.sh exists. This lets you use check_domain in a testing environment
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# or outside of Nagios.
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if [ -e "$PROGPATH/utils.sh" ]; then
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. "$PROGPATH/utils.sh"
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else
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STATE_OK=0
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STATE_WARNING=1
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STATE_CRITICAL=2
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STATE_UNKNOWN=3
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# STATE_DEPENDENT=4 (Commented because it's unused.)
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fi
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shopt -s extglob
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#### Functions ####
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# Print version information
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print_version()
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{
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echo "$0 - $VERSION"
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}
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#Print help information
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print_help()
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{
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print_version
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echo "$AUTHOR"
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echo "Monitor temperature with the use of sensors"
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/bin/cat <<EOT
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Options:
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-h, --help
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Print detailed help screen
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-V, --version
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Print version information
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-v, --verbose
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Verbose output
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-s, --sensor <WORD[,DISPLAY_NAME]>
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Set what to monitor, for example CPU or MB (or M/B). Check sensors for the
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correct word. Default is CPU. A different display name can be used in output,
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by adding it next to sensor with a comma.
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It can be used more than once, with different warning/critical thresholds optionally.
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-w, --warning <INTEGER>
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Exit with WARNING status if above INTEGER degrees
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-c, --critical <INTEGER>
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Exit with CRITICAL status if above INTEGER degrees
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Warning and critical thresholds must be provided before the corresponding --sensor option.
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-n
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Use the new sed based filter in case classic filter yields no temperature.
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Examples:
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./check_temp.sh [-n] -w 65 -c 75 --sensor CPU
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./check_temp.sh [-n] -w 65 -c 75 --sensor CPU --sensor temp1
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./check_temp.sh [-n] -w 65 -c 75 --sensor CPU -w 75 -c 85 --sensor temp1,GPU
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EOT
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}
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###### MAIN ########
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# Warning threshold
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thresh_warn=
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# Critical threshold
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thresh_crit=
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# Hardware to monitor
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default_sensor="CPU"
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sensor_declared=false
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STATE=$STATE_OK
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# See if we have sensors program installed and can execute it
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if [[ ! -x "$SENSORPROG" ]]; then
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echo "It appears you don't have lm-sensors installed. You may find help in the readme for this script."
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exit $STATE_UNKNOWN
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fi
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function set_state {
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[[ "$STATE" -lt "$1" ]] && STATE=$1
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}
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function process_sensor {
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sensor=$(echo $1 | cut -d, -f1)
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sensor_display=$(echo $1 | cut -d, -f2)
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# Check if a sensor were specified
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if [[ -z "$sensor" ]]; then
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# No sensor to monitor were specified
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echo "No sensor specified"
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print_help
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exit $STATE_UNKNOWN
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fi
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# Check if the thresholds have been set correctly
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if [[ -z "$thresh_warn" || -z "$thresh_crit" ]]; then
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# One or both thresholds were not specified
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echo "Threshold not set"
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print_help
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exit $STATE_UNKNOWN
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elif [[ "$thresh_crit" -lt "$thresh_warn" ]]; then
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# The warning threshold must be lower than the critical threshold
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echo "Warning temperature should be lower than critical"
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print_help
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exit $STATE_UNKNOWN
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fi
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# Get the temperature
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# Grep the first float with a plus sign and keep only the integer
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if [ $CLASSIC_FILTER -eq 1 ]; then
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WHOLE_TEMP=$(${SENSORPROG} | grep "$sensor" | head -n1 | grep -o "+[0-9]\+\(\.[0-9]\+\)\?[^ \t,()]*" | head -n1)
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else
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WHOLE_TEMP=$(${SENSORPROG} -A "$sensor" | sed -n '2 p' | grep -o "+[0-9]\+\(\.[0-9]\+\)\?[^ \t,()]*" | head -n1)
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fi
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TEMPF=$(echo "$WHOLE_TEMP" | grep -o "[0-9]\+\(\.[0-9]\+\)\?")
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TEMP=$(echo "$TEMPF" | cut -d. -f1)
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# Verbose output
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if [[ "$verbosity" -ge 1 ]]; then
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/bin/cat <<__EOT
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Debugging information:
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Warning threshold: $thresh_warn
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Critical threshold: $thresh_crit
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Verbosity level: $verbosity
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Current $sensor temperature: $TEMP
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__EOT
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echo "Temperature lines directly from sensors:"
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${SENSORPROG}
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fi
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# Get performance data for Nagios "Performance Data" field
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PERFDATA="$PERFDATA $sensor_display=$TEMP;$thresh_warn;$thresh_crit"
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# And finally check the temperature against our thresholds
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if [[ "$TEMP" != +([0-9]) ]]; then
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# Temperature not found for that sensor
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OUTPUT_TEXT="$OUTPUT_TEXT, No data found for sensor ($sensor)"
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set_state $STATE_UNKNOWN
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elif [[ "$TEMP" -gt "$thresh_crit" ]]; then
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# Temperature is above critical threshold
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OUTPUT_TEXT="$OUTPUT_TEXT, $sensor_display has temperature: $WHOLE_TEMP"
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set_state $STATE_CRITICAL
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elif [[ "$TEMP" -gt "$thresh_warn" ]]; then
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# Temperature is above warning threshold
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OUTPUT_TEXT="$OUTPUT_TEXT, $sensor_display has temperature: $WHOLE_TEMP"
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set_state $STATE_WARNING
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else
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# Temperature is ok
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OUTPUT_TEXT="$OUTPUT_TEXT, $sensor_display has temperature: $WHOLE_TEMP"
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set_state $STATE_OK
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fi
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}
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CLASSIC_FILTER=1
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# Parse command line options
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while [[ -n "$1" ]]; do
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case "$1" in
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-h | --help)
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print_help
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exit $STATE_OK
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;;
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-V | --version)
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print_version
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exit $STATE_OK
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;;
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-v | --verbose)
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: $(( verbosity++ ))
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shift
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;;
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-w | --warning)
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if [[ -z "$2" ]]; then
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# Threshold not provided
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echo "Option $1 requires an argument"
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print_help
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exit $STATE_UNKNOWN
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elif [[ "$2" = +([0-9]) ]]; then
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# Threshold is an integer
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thresh=$2
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else
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# Threshold is not an integer
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echo "Threshold must be an integer"
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print_help
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exit $STATE_UNKNOWN
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fi
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thresh_warn=$thresh
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shift 2
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;;
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-c | --critical)
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if [[ -z "$2" ]]; then
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# Threshold not provided
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echo "Option '$1' requires an argument"
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print_help
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exit $STATE_UNKNOWN
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elif [[ "$2" = +([0-9]) ]]; then
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# Threshold is an integer
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thresh=$2
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else
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# Threshold is not an integer
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echo "Threshold must be an integer"
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print_help
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exit $STATE_UNKNOWN
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fi
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thresh_crit=$thresh
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shift 2
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;;
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-s | --sensor)
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if [[ -z "$2" ]]; then
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echo "Option $1 requires an argument"
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print_help
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exit $STATE_UNKNOWN
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fi
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sensor_declared=true
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sensors_to_check="$2"
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shift 2
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;;
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-n | --new-filter)
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CLASSIC_FILTER=0
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shift 1
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;;
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*)
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echo "Invalid option '$1'"
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print_help
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exit $STATE_UNKNOWN
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;;
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esac
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# argument order is irrelevant, Icinga2 gives no guarantees
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# as soon as there are enough output is generated
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if [ ! -z "$thresh_warn" ] && [ ! -z "$thresh_crit" ] && [ ! -z "$sensors_to_check" -o $# -eq 0 ]; then
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if [ "$sensor_declared" = false ]; then
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process_sensor "$default_sensor"
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else
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process_sensor "$sensors_to_check"
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fi
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fi
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done
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case "$STATE" in
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"$STATE_OK") STATE_TEXT="OK" ;;
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"$STATE_WARNING") STATE_TEXT="WARNING" ;;
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"$STATE_CRITICAL") STATE_TEXT="CRITICAL" ;;
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"$STATE_UNKNOWN") STATE_TEXT="UNKNOWN" ;;
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esac
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OUTPUT_TEXT=$(echo $OUTPUT_TEXT | sed -e 's/, //')
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echo "TEMPERATURE $STATE_TEXT - $OUTPUT_TEXT |$PERFDATA"
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exit $STATE
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