Add new plugin to monitor the chipset temperatur sensors of the local computer

git-svn-id: https://subversion.fem.tu-ilmenau.de/repository/nagios@38 0c029375-f9a5-47ba-aa0c-8883c34e326a

check_sensors

+#!/usr/bin/perl
+################################################################################
+#                                                                              #
+#  Copyright (C) 2011 Chad Columbus <ccolumbu@hotmail.com>                     #
+#  Special thanks to Jack-Benny Persson <jake@cyberinfo.se>                    #
+#  Copyright (C) 2016 Dustin Funk <nuts@fem-tu-ilmenau.de>                     #
+#                                                                              #
+#                                                                              #
+#  Last Modified: 2016-03-05 (Dustin Funk)                                     #
+#                                                                              #
+#                                                                              #
+# CHANGELOG:                                                                   #
+#   v1.3   - Add performance data output (2016-03-05)                          #
+#                                                                              #
+#                                                                              #
+# LICENSE: GPL-2                                                               #
+#                                                                              #
+#   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 Perl (and uses Getopt::Std module).                              #
+# Special thanks to Jack-Benny Persson as this whole program is based on his  #
+# Bash version of this script.                                                #
+#                                                                             #
+###############################################################################
+
+
+use strict;
+use Getopt::Std;
+
+my $VERSION = "Version 1.3";
+my %opts;
+getopts('hw:c:s:', \%opts);
+
+# Sensor program
+my $SENSORPROG = "/usr/bin/sensors";
+
+# Exit codes
+my $STATE_OK = 0;
+my $STATE_WARNING = 1;
+my $STATE_CRITICAL = 2;
+my $STATE_UNKNOWN = 3;
+my $exit_code = '4';
+
+# Default values:
+my $sensor_regex = 'temp1';
+my $error = 0;
+my $default_thresh_warn = 80;
+my $default_thresh_crit = 100;
+my $thresh_warn = '';
+my $thresh_crit = '';
+my $matched_pattern = '';
+my $message = '';
+my %temp_hash;
+my $temp_list = '';
+my $temp_perfdata = '';
+
+# See if we have sensors program installed and can execute it
+if (! -x "$SENSORPROG") {
+        print "\nIt appears you don't have sensors installed in $SENSORPROG\n";
+        exit($STATE_UNKNOWN);
+}
+
+# Parse command line options
+if ($opts{'h'}) {
+	&print_help();
+	exit($STATE_OK);
+}
+
+if (! defined $opts{'w'}) {
+	# Warning not provided
+	$thresh_warn = $default_thresh_warn;
+} elsif ($opts{'w'} =~ /^\d+$/) {
+	# Warning is an integer
+	$thresh_warn = $opts{'w'};
+} else {
+	# Warning is not an integer
+	print "Warning must be an integer\n";
+}
+
+if (! defined $opts{'c'}) {
+	# Critical not provided
+	$thresh_crit = $default_thresh_crit;
+} elsif ($opts{'c'} =~ /^\d+$/) {
+	# Critical is an integer
+	if ($opts{'c'} <= $opts{'w'}) {
+		print "Critical -c must be greater than Warning -w\n";
+		exit($STATE_UNKNOWN);
+	} else {
+		$thresh_crit = $opts{'c'};
+	}
+} else {
+	# Critical is not an integer
+	print "Critical must be an integer\n";
+}
+
+if (defined $opts{'s'}) {
+	if ($opts{'s'} ne '') {
+		# Sensor argument provided:
+		$sensor_regex = $opts{'s'};
+	}
+}
+
+my $sensors_output = `export LANG=C;$SENSORPROG`;
+my $pattern = "($sensor_regex)" . '\:[\s\n\r]{1,}[\+\-]{0,1}(\d{1,3}(?:\.\d{1,2}){0,1}).[CF]';
+my $matched_sensor;
+my %sensor_name;
+my $hold_temp;
+my $loop = 0;
+
+foreach $matched_pattern ($sensors_output =~ m/$pattern/imsg) {
+	if ($matched_pattern =~ m/$sensor_regex/) {
+		$matched_sensor = $matched_pattern;
+	} else {
+		$hold_temp = $matched_pattern;
+
+		# Check that the regex returned a number:
+		if ($hold_temp =~ /^\d{1,3}(?:\.\d{1,2}){0,1}$/) {
+			# Sucess, we got what looks like a temp!
+			$temp_hash{$loop} = $hold_temp;
+			($sensor_name{$loop} = $matched_sensor) =~ s/ //g;
+
+			if ($exit_code == 0 || $exit_code == 4) {
+				if ($hold_temp > $thresh_crit) {
+					$exit_code = $STATE_CRITICAL;
+					$message = "CRITICAL - ";
+				} elsif ($hold_temp > $thresh_warn) {
+					if ($exit_code == 0 || $exit_code == 3 || $exit_code == 4) {
+						$exit_code = $STATE_WARNING;
+						$message = "WARNING - ";
+					}
+				} else {
+					$message = "TEMP OK - ";
+					$exit_code = $STATE_OK;
+				}
+			}
+		}
+		$matched_sensor = '';
+		$hold_temp = '';
+	}
+	$loop++;
+}
+
+if ($message eq '') {
+	print "Error: I did not get a temp from the sensor data matching REGEX = \/$sensor_regex\:\/. Forget -s ?\n";
+	exit($STATE_UNKNOWN);
+}
+
+foreach my $key (sort keys %temp_hash) {
+	$temp_list .= "$sensor_name{$key} $temp_hash{$key}; ";
+	$temp_perfdata .= " $sensor_name{$key}=$temp_hash{$key};$thresh_warn;$thresh_crit;";
+}
+#$temp_list =~ s/, $//;
+#$temp_perfdata =~ s/, $//;
+
+print "$message $temp_list |$temp_perfdata\n";
+exit($exit_code);
+
+
+
+####################################
+# Start Subs:
+####################################
+
+sub print_help() {
+        print << "EOF";
+
+Monitor temperature with the use of $SENSORPROG
+$VERSION
+
+Options:
+-h
+   Print detailed help screen
+-s 'REGEX'
+   Set what to monitor. Default is 'temp1'.
+-w INTEGER
+   If not set default is $default_thresh_warn
+-c INTEGER
+   if not set default is $default_thresh_crit
+EOF
+}
+
+