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monitoring-scripts/check_temp

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