Temptrax returns incorect data
Shane_Seidel at gwf.com.au
Shane_Seidel at gwf.com.au
Tue Oct 15 05:30:25 CEST 2002
All
I am using a Temptrax 2000 digital thermometer and seeing incorrect data
reported by Nagios.
When run from the command line output seems correct.
/usr/local/nagios/libexec/check_temptrax -w 25 -c 30 -S 2
Temp Ok: Sensor 2 = 21.6 Deg. C
/usr/local/nagios/libexec/check_temptrax -w 25 -c 30 -S 1
Temp Warning: Sensor 1 = 25.1 Deg. C
But Nagios reports:-
Server Room Temp OK 13-09-2002 08:56:02 7d 18h 47m 6s 1/3 Temp Ok: Sensor 1 =
-17.8 Deg. C
Server Room Temp 2 OK 13-09-2002 08:57:37 7d 15h 22m 16s 1/3 Temp Ok: Sensor 2 =
-17.8 Deg. C
These values are still reported by Nagios even when the device is detatched from
the server.
I have been informed by the helpful people at Temptrax that a value of 0 deg
farenheight is being reported.
checkcommands.cfg is as follows:-
command[check_temptrax]=/usr/local/nagios/libexec/check_temptrax -w 25 -c 30 -S
1 -f 0
command[check_temptrax2]=/usr/local/nagios/libexec/./check_temptrax -w 25 -c 30
-S 2 -f 0
service.cfg is as follows:-
service[nms-GWFIS-Monitoring-System]=Server Room
Temp;0;24x7;3;5;1;gwfis-admins;240;24x7;1;1;0;;check_temptrax
service[nms-GWFIS-Monitoring-System]=Server Room Temp
2;0;24x7;3;5;1;gwfis-admins;240;24x7;1;1;0;;check_temptrax2
#!/usr/bin/perl -w
#
# TempTrax plugin for Nagios
# (c) 2001 Sensor Instruments Co., Inc.
# 41 Terrill Park Drive
# Concord, NH 03301
# http://www.temptrax.com
#
# use functions
use Getopt::Long;
# the serial port temptrax is connected to
$temptrax_device = "/dev/ttyS0";
$temptrax_file = "/usr/local/nagios/libexec/temptrax";
# initialize vars
$w="";
$c="";
$s="1";
$f="0";
$formattag="C";
$sensor1_celsius="";
$sensor2_celsius="";
$battery="";
# read options from command line
&GetOptions("w=i" => \$w,"c=i" => \$c,"S=i" => \$s,"f=i" => \$f);
# exit when there are no parameters set
if ($w eq "" || $c eq "" || $s eq "" || $f eq "")
{
print "Invalid arguments supplied\n\n";
print "TempTrax plugin for Nagios\n";
print "Copyright (c) 2001-2002 Sensor Instruments Co., Inc.\n\n";
print " usage: check_temptrax [--help|--version]\n";
print " check_temptrax -w [warning temperature] -c [critical
temperature] -S [1|2] -f [0|1]\n\n";
print " options:\n";
print " -S [1|2] : Sensor to read temp from. Default=1\n";
print " -f [0|1] : Temps specified in Celsius (0) or Farenheit (1).
Default=0\n";
exit (3);
}
# check if the required c++ program exists
if (!-e $temptrax_file)
{
print "The temptrax executable could not be found\n\n";
exit(0);
}
# split temperature and battery status
($sensor1, $sensor2, $battery) = split(/\r\n/, `$temptrax_file
$temptrax_device`);
# remove whitespaces from the returned temperatures
$sensor1 =~ s/ //g;
$sensor2 =~ s/ //g;
# Convert Fahrenheit into Celsius
$sensor1_celsius = sprintf("%.1f", (($sensor1-32)/9)*5);
$sensor2_celsius = sprintf("%.1f", (($sensor2-32)/9)*5);
# Convert thresholds into Celsius if they were specified in Farenheit
#(for comparison)
if ($f eq "1")
{
$w = sprintf("%.1f", (($c-32)/9)*5);
$c = sprintf("%.1f", (($c-32)/9)*5);
}
# What value (Celsius or Farenheit) should be displayed to the user?
if($f eq "1")
{
$temp=${"sensor$s"};
$formattag="F";
}
else
{
$temp=${"sensor$s\_celsius"};
$formattag="C";
}
# check temperature and choose exit code
if (${"sensor$s\_celsius"} eq "-73.3")
{
print "Temp Unknown: Sensor $s not connected\n";
exit(3);
}
elsif (${"sensor$s\_celsius"} > $c && ${"sensor$s\_celsius"} ne "-73.3")
{
print "Temp Critical: Sensor $s = $temp Deg. $formattag\n";
exit(2);
}
elsif (${"sensor$s\_celsius"} > $w && ${"sensor$s\_celsius"} ne "-73.3")
{
print "Temp Warning: Sensor $s = $temp Deg. $formattag\n";
exit(1);
}
else
{
print "Temp Ok: Sensor $s = $temp Deg. $formattag\n";
exit(0);
}
Nagios is v 1.0b5 on Red Hat 7.3 and compiled with default options and the
latest plugin / binary
Can someone shed some light as to why this is occuring and how to fix the
problem?
Thank
Shane
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