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Revision 1.1, Wed May 3 23:50:17 2006 UTC (18 years ago) by andrew
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The index page so people can find the script and send me complaints :-)

<html><head><title>Nagios Check - check_hw_sensors</title></head>
    <body>
        <h1>Nagios Check - check_hw_sensors</h1>
        <p>check_hw_sensors plugin for Nagios monitors sysctl hw.sensors on OpenBSD</p>
        <p>With the new sensor framework in OpenBSD 3.9, I wanted to be able to monitor the new hw.sensors from <a href='http://www.nagios.org/'>Nagios</a> and this is what I have.  It is currently a work in progress although it does seem to work just fine.  The documentation is a bit thin and I don't know how reliable it is.  I would be happy to accept patches.  Send them to <a href='mailto:andrew+nagios@rraz.net'>andrew+nagios@rraz.net</a>.  I know the docs aren't as good as I would like, so if there are places that need clarification, please let me know!</p>
        <p>What I think is really kewl about this plugin is that it can use the same sensorsd.conf as sensorsd.  That means that they can be easily kept in sync.  But, since Nagios supports both warning and critical alerts, it turned out really handy that sensorsd ignores any additional capabilities in the file.  The addtional capabilities check_hw_sensors supports are described below.  If you have an /etc/sensorsd.conf with the checks you want, it can be run as simply as 'check_hw_sensors -f'.</p>
        <p><center><b><a href='check_hw_sensors-1.13.tar.gz'>Download the current version here</a></b></center></p>
        <h4>
          Please be sure to support the <a href="http://www.openbsd.org">OpenBSD</a>
          project by purchasing 
          <a href="http://www.openbsd.org/items.html">CDs</a>, 
          <a href="http://www.openbsd.org/tshirts.html">T-shirts</a>, or making a 
          <a href="http://www.openbsd.org/donations.html">donation</a>.
          <br />
          These finances ensure that OpenBSD will continue to exist, and 
          will remain <a href="http://www.openbsd.org/policy.html">free</a>
          for everyone to use and reuse as they see fit.
        </h4>
        <pre>
    check_hw_sensors (-f [&lt;FILENAME&gt;]|(-s &lt;hw.sensors id&gt; -w limit -c limit))

Usage:
    -f, --filename=FILE
        FILE to load checks from (defaults to /etc/sensorsd.conf)
    -s, --sensor=ID
        ID of a single sensor.  "-s 0" means hw.sensors.0.
    -w, --warning=RANGE or single ENTRY
        Exit with WARNING status if outside of RANGE or if != ENTRY
    -c, --critical=RANGE or single ENTRY
        Exit with CRITICAL status if outside of RANGE or if != ENTRY

    -h (--help)       usage help
        </pre>
        <p>FILE is in the same format as <a href='http://www.openbsd.org/cgi-bin/man.cgi?query=sensorsd.conf'>sensorsd.conf(5)</a> plus some additional entries.  These additional entries in the file are ignored by <a href='http://www.openbsd.org/cgi-bin/man.cgi?query=sensorsd'>sensorsd(8)</a>.  </p>

        <p>check_hw_sensors understands the following entries:<br>
        low, high, crit, warn, crit.low, crit.high, warn.low, warn.high</p>

        <p>An ENTRY depends on the type.  The descriptions in <a href='http://www.openbsd.org/cgi-bin/man.cgi?query=sensorsd.conf'>sensorsd.conf(5)</a>
        can be used when appropriate, or you can use the following:

        <ul>
            <li>volts_dc, fanrpm or raw<br>
            Anything that includes digits.
            Both the value of the check and the value of the sensor
            response that are not either a digit or period are stripped
            and then the two resultant values are compared.</li>

            <li>temp<br>
            Can be as above, but if the entry has an F in it,
            it compares farenheit, otherwise it uses celcius.</li>

            <li>indicator or drive<br>
            does a case sensitive match of each
            entry in the comma separated list and if it does not match
            any of the entries, it matches the status.  Does not support any low or high entries.</li>
        </ul>

        <p>The entries 'crit' or 'warn' (or the -c or -w on the command line)
        may be a RANGE or a comma separated list of acceptable values.
        The comma separated list of values contains a list of things that
        will NOT cause the status.  This is possibly counterintuitive, but
        you are more likely to know good values than bad values.</p>

        <p>A RANGE is a low ENTRY and a high ENTRY separated by a colon (:).
        It can also be low: or :high with the other side left blank to only
        make the single check..<p>

        <p>check_hw_sensors (nagios-plugins 1.4.2) 1.13<br>
        The nagios plugins come with ABSOLUTELY NO WARRANTY. You may redistribute
        copies of the plugins under the terms of the GNU General Public License.
        For more information about these matters, see the file named COPYING.</p>
        <h3>Example Sensorsd.conf</h3>
        <pre>
# $OpenBSD: sensorsd.conf,v 1.1 2003/10/08 20:30:04 grange Exp $
# $ RedRiver: sensorsd.conf,v 1.1 2006/05/03 21:48:42 andrew Exp $

#
# Sample sensorsd.conf file. See sensorsd.conf(5) for details.
# This one has examples for use with nagios check_hw_sensors
# Actual sensors on a 2450 are below.
#

# hw.sensors.0=esm0, Motherboard, raw, 0
# hw.sensors.1=esm0, CPU 1, OK, temp, 28.00 degC / 82.40 degF
hw.sensors.1:high=50C:warn.high=40C

# hw.sensors.2=esm0, CPU 2, OK, temp, 30.00 degC / 86.00 degF
hw.sensors.2:high=50C:warn.high=40C

# hw.sensors.3=esm0, Mainboard, OK, temp, 21.50 degC / 70.70 degF
hw.sensors.3:high=40C:warn.high=30C

# hw.sensors.4=esm0, CPU 1 Core, OK, volts_dc, 1.69 V
hw.sensors.4:high=1.85V:warn.high=1.8V:low=1.60V:warn.low=1.65V

# hw.sensors.5=esm0, CPU 2 Core, OK, volts_dc, 1.70 V
hw.sensors.5:high=1.85V:warn.high=1.8V:low=1.60V:warn.low=1.65V

# hw.sensors.6=esm0, Motherboard +5V, OK, volts_dc, 4.95 V
hw.sensors.6:high=5.1V:warn.high=5.05V:low=4.90V:warn.low=4.85V

# hw.sensors.7=esm0, Motherboard +12V, OK, volts_dc, 11.94 V
hw.sensors.7:high=12.15V:warn.high=12.1V:low=11.8V:warn.low=11.85V

# hw.sensors.8=esm0, Motherboard +3.3V, OK, volts_dc, 3.27 V
hw.sensors.8:high=3.5V:warn.high=3.4V:low=3.15V:warn.low=3.2V

# hw.sensors.9=esm0, Motherboard +2.5V, OK, volts_dc, 2.48 V
hw.sensors.9:high=2.75V:warn.high=2.6V:low=2.25V:warn.low=2.4V

# hw.sensors.10=esm0, Motherboard GTL Term, OK, volts_dc, 1.49 V
hw.sensors.10:high=1.75V:warn.high=1.6V:low=1.25V:warn.low=1.4V

# hw.sensors.11=esm0, Motherboard Battery, OK, volts_dc, 2.93 V
hw.sensors.11:high=3.1V:warn.high=3.05V:low=2.75V:warn.low=2.8V

# hw.sensors.12=esm0, Chassis Intrusion, indicator, Off
hw.sensors.12:crit=Off:warn=Off

# hw.sensors.13=esm0, Fan 1, OK, fanrpm, 3526 RPM
hw.sensors.13:low=3000:warn.low=3250

# hw.sensors.14=esm0, Fan 2, OK, fanrpm, 3569 RPM
hw.sensors.14:low=3000:warn.low=3250

# hw.sensors.15=esm0, Fan 3, OK, fanrpm, 3563 RPM
hw.sensors.15:low=3000:warn.low=3250

# hw.sensors.16=esm0, Backplane, raw, 0
# hw.sensors.17=esm0, Backplane Top, OK, temp, 14.50 degC / 58.10 degF
hw.sensors.17:high=35C:warn.high=25C

# hw.sensors.18=esm0, Backplane Bottom, OK, temp, 22.00 degC / 71.60 degF
hw.sensors.18:high=40C:warn.high=30C

# hw.sensors.19=esm0, Backplane +5V, OK, volts_dc, 4.97 V
hw.sensors.19:high=5.1V:warn.high=5.05V:low=4.90V:warn.low=4.85V

# hw.sensors.20=esm0, Backplane SCSI A Connected, indicator, On
hw.sensors.20:crit=On:warn=On

# hw.sensors.21=esm0, Backplane SCSI A External, OK, volts_dc, 4.70 V
hw.sensors.21:high=5.1V:warn.high=5.05V:low=4.60V:warn.low=4.65V

# hw.sensors.22=esm0, Backplane SCSI B Connected, indicator, Off
hw.sensors.22:crit=Off:warn=Off

# hw.sensors.23=esm0, Drive 0, drive, online
hw.sensors.23:crit=online,empty:warn=online

# hw.sensors.24=esm0, Drive 1, drive, online
hw.sensors.24:crit=online,empty:warn=online

# hw.sensors.25=esm0, Drive 2, drive, empty
hw.sensors.25:crit=online,empty:warn=online,empty

# hw.sensors.26=esm0, Drive 3, drive, empty
hw.sensors.26:crit=online,empty:warn=online,empty

# hw.sensors.27=esm0, Backplane Control 2, raw, 17
# hw.sensors.28=esm0, Backplane +3.3V, OK, volts_dc, 3.28 V
hw.sensors.28:high=3.5V:warn.high=3.4V:low=3.2V:warn.low=3.25V

# hw.sensors.29=safte0, temp0, OK, temp, 14.44 degC / 58.00 degF
hw.sensors.29:high=35C:warn.high=25C

# hw.sensors.30=safte0, temp1, OK, temp, 22.22 degC / 72.00 degF
hw.sensors.30:high=40C:warn.high=30C
        </pre>
        <h3>Example output from sysctl hw.sensors from that box</h3>
        <pre>
hw.sensors.0=esm0, Motherboard, raw, 0
hw.sensors.1=esm0, CPU 1, OK, temp, 30.00 degC / 86.00 degF
hw.sensors.2=esm0, CPU 2, OK, temp, 31.00 degC / 87.80 degF
hw.sensors.3=esm0, Mainboard, OK, temp, 19.50 degC / 67.10 degF
hw.sensors.4=esm0, CPU 1 Core, OK, volts_dc, 1.69 V
hw.sensors.5=esm0, CPU 2 Core, OK, volts_dc, 1.70 V
hw.sensors.6=esm0, Motherboard +5V, OK, volts_dc, 4.95 V
hw.sensors.7=esm0, Motherboard +12V, OK, volts_dc, 11.93 V
hw.sensors.8=esm0, Motherboard +3.3V, OK, volts_dc, 3.27 V
hw.sensors.9=esm0, Motherboard +2.5V, OK, volts_dc, 2.48 V
hw.sensors.10=esm0, Motherboard GTL Term, OK, volts_dc, 1.49 V
hw.sensors.11=esm0, Motherboard Battery, OK, volts_dc, 2.94 V
hw.sensors.12=esm0, Chassis Intrusion, indicator, Off
hw.sensors.13=esm0, Fan 1, OK, fanrpm, 3514 RPM
hw.sensors.14=esm0, Fan 2, OK, fanrpm, 3582 RPM
hw.sensors.15=esm0, Fan 3, OK, fanrpm, 3570 RPM
hw.sensors.16=esm0, Backplane, raw, 0
hw.sensors.17=esm0, Backplane Top, OK, temp, 14.50 degC / 58.10 degF
hw.sensors.18=esm0, Backplane Bottom, OK, temp, 22.50 degC / 72.50 degF
hw.sensors.19=esm0, Backplane +5V, OK, volts_dc, 4.97 V
hw.sensors.20=esm0, Backplane SCSI A Connected, indicator, On
hw.sensors.21=esm0, Backplane SCSI A External, OK, volts_dc, 4.70 V
hw.sensors.22=esm0, Backplane SCSI B Connected, indicator, Off
hw.sensors.23=esm0, Drive 0, drive, online
hw.sensors.24=esm0, Drive 1, drive, online
hw.sensors.25=esm0, Drive 2, drive, empty
hw.sensors.26=esm0, Drive 3, drive, empty
hw.sensors.27=esm0, Backplane Control 2, raw, 17
hw.sensors.28=esm0, Backplane +3.3V, OK, volts_dc, 3.28 V
hw.sensors.29=safte0, temp0, OK, temp, 15.00 degC / 59.00 degF
hw.sensors.30=safte0, temp1, OK, temp, 22.78 degC / 73.00 degF
        </pre>
        <p>Andrew Fresh &lt;<a href='mailto:andrew@mad-techies.org'>andrew@mad-techies.org</a>&gt;</p>
        <p><small>$RedRiver$</small></p>
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