7e33e13abc
-Added following line edits info to comments at the top and increased version number -Line 193, modified sensor parsing to cut after the first '+' since all positive temperatures are preceded by a + and the one we want is labeled first -Line 211, reduced "verbosity" needed to see verbose info (was 2: -v -v) -Line 229-232, now checks if no sensor data was found and exits with STATE_UNKNOWN -Fixed 2 typos, one in output and other an in-line comment -Updated line numbers in previous version info lines in comments since my comments pushed the lines down
248 lines
7.1 KiB
Bash
Executable File
248 lines
7.1 KiB
Bash
Executable File
#!/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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# Version 0.2: Line 98, fixed the missing "-n" option (Thanks to Chad who #
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# pointed this out for me). Also added a "shopt -s extglob". (Thx to Chad) #
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# Version 0.5: Line 162, fixed a typo (EXIT_UNKNOWN to STATE_UNKNOWN) #
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# Version 0.7: #
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# Line 191, modified sensor grab from "3rd section" to "after first '+'" #
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# Line 227-230, now checks if no sensor data was found and exits with #
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# STATE_UNKNOWN #
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###############################################################################
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VERSION="Version 0.7"
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AUTHOR="(c) 2011 Jack-Benny Persson (jack-benny@cyberinfo.se)"
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# Sensor program
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SENSORPROG=/usr/bin/sensors
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# Exit codes
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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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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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printf "\n\n$0 - $VERSION\n"
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}
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#Print help information
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print_help()
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{
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print_version
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printf "$AUTHOR\n"
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printf "Monitor temperature with the use of sensors\n"
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/bin/cat <<EOT
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Options:
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-h
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Print detailed help screen
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-V
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Print version information
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-v
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Verbose output
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--sensor WORD
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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.
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-w INTEGER
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Exit with WARNING status if above INTEGER degres
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-c INTEGER
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Exit with CRITICAL status if above INTEGER degres
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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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sensor=CPU
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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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printf "\nIt appears you don't have sensors installed in $SENSORPROG\n"
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exit $STATE_UNKOWN
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fi
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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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printf "\nOption $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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printf "\nThreshold 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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printf "\nOption '$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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printf "\nThreshold 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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-\?)
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print_help
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exit $STATE_OK
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;;
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--sensor)
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if [[ -z "$2" ]]; then
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printf "\nOption $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=$2
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shift 2
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;;
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*)
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printf "\nInvalid option '$1'"
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print_help
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exit $STATE_UNKNOWN
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;;
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esac
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done
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# Check if a sensor were specified
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if [[ -z "$sensor" ]]; then
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# No sensor to monitor were specified
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printf "\nNo sensor specified"
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print_help
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exit $STATE_UNKNOWN
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fi
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#Get the temperature
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TEMP=`${SENSORPROG} | grep "$sensor" | cut -d+ -f2 | cut -c1-2 `
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# Check if the thresholds have been set correctly
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if [[ -z "$thresh_warn" || -z "$thresh_crit" ]]; then
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# One or both thresholds were not specified
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printf "\nThreshold 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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printf "\nWarning temperature should be lower than critical"
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print_help
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exit $STATE_UNKNOWN
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fi
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# Verbose output
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if [[ "$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: $TEMP
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__EOT
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printf "\n Temperature lines directly from sensors:\n"
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${SENSORPROG}
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printf "\n\n"
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fi
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# Get performance data for Nagios "Performance Data" field
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PERFDATA=`${SENSORPROG} | grep "$sensor"`
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# And finally check the temperature against our thresholds
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if [[ "$TEMP" != +([0-9]) ]]; then
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# Temperature not found for that sensor
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printf "No data found for that sensor ($sensor)\n"
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exit $STATE_UNKNOWN
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elif [[ "$TEMP" -gt "$thresh_crit" ]]; then
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# Temperature is above critical threshold
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echo "$sensor CRITICAL - Temperature is $TEMP | $PERFDATA"
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exit $STATE_CRITICAL
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elif [[ "$TEMP" -gt "$thresh_warn" ]]; then
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# Temperature is above warning threshold
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echo "$sensor WARNING - Temperature is $TEMP | $PERFDATA"
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exit $STATE_WARNING
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else
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# Temperature is ok
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echo "$sensor OK - Temperature is $TEMP | $PERFDATA"
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exit $STATE_OK
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fi
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exit 3
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