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248 lines
8.0 KiB
Perl
Executable File
248 lines
8.0 KiB
Perl
Executable File
#!/usr/local/bin/perl -w
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# -*- perl -*-
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=head1 NAME
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hddtemp_smartctl - Plugin to monitor harddrive temperatures through
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SMART
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=head1 CONFIGURATION
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This plugin needs to run as root or some other user that has access to
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the harddrive devices.
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The following environment variables are used
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smartctl - path to smartctl executable
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drives - List drives to monitor. E.g. "env.drives hda hdc".
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type_$dev - device type for one drive, e.g. "env.type_sda 3ware,0"
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or more typically "env.type_sda ata" if sda is a SATA disk.
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args_$dev - additional arguments to smartctl for one drive,
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e.g. "env.args_hda -v 194,10xCelsius". Use this to make
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the plugin use the --all or -a option if your disk will
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not return its temperature when only the -A option is
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used.
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dev_$dev - monitoring device for one drive, e.g. twe0
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If the "smartctl" enviroment variable is not set the plugin will
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search your $PATH, /usr/bin, /usr/sbin, /usr/local/bin and
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/usr/local/sbin for a file called "smartctl", and use that.
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If the "drives" environment variable is not set, the plugin will
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attempt to search for drives to probe.
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=head1 MAGIC MARKERS
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#%# family=auto
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#%# capabilities=autoconf
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=head1 AUTHOR
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Copyright (c) 2005, Lutz Peter Christoph
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All rights reserved.
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=head1 LICENSE
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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* The name and aliases of Lutz Peter Christoph ("Lupe Christoph",
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"Lutz Christoph") may not be used to endorse or promote products
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derived from this software without specific prior written
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permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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=head1 NOTES
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Note for users of RAID controllers (smartmontools currently only
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supports 3ware): you can specify the drives attached to your RAID
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controller(s) as raiddev_num (e.g. sda_0). Then you must specify the
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type like this: type_sda_0 3ware,0.
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Recent versions of the kernel driver use a separate major device
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number for monitoring purposes, like /dev/twe<n> or /dev/twa<n>. This
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can be put in the e.g. dev_sda environment variable, to allow the user
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to keep sda as the name of the disk.
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To avoid spinning up sleeping disks smartctl will use the --nocheck
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parameter. If this parameter isn't supported by your version of
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smartctl then hdparm will be used. Note that hdparm isn't available
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on all platforms.
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=cut
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use strict;
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my $DEBUG = $ENV{'MUNIN_DEBUG'} || 0;
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my $smartctl = exists $ENV{smartctl} ? $ENV{smartctl} : '';
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# If the envvar is not set, look for smartctl
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if (!$smartctl) {
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# Still not found? Check obvious places
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my @dirs = split(':',$ENV{PATH});
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push (@dirs, qw(/usr/bin /usr/sbin /usr/local/bin /usr/local/sbin) );
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until ($smartctl or @dirs == 0) {
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my $dir = shift @dirs;
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my $path = $dir.'/smartctl';
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$smartctl = $path if -x $path;
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}
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} elsif (! -x $smartctl) {
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# If it is set, verify it
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warn "Predefined smartctl ($smartctl) is not a executable\n";
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undef $smartctl;
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}
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# Check version of smartctl to determine --nocheck capabilities
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my $use_nocheck = 0;
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if ($smartctl and `$smartctl --version` =~ / version (\d+\.\d+) /i) {
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$use_nocheck = $1 >= 5.37;
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warn "[DEBUG] Smartctl supports --nocheck\n" if $DEBUG;
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}
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# hdparm is used as a fallback
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my $hdparm = `which hdparm 2>/dev/null`;
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chomp $hdparm;
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my @drives;
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# Try to get a default set of drives
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if ($^O eq 'linux') {
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# On Linux, we know how to enumerate ide drives. SCSI is not as easy
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if (-d '/proc/ide') {
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opendir(IDE, '/proc/ide');
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@drives = grep /hd[a-z]/, readdir IDE;
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closedir(IDE);
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}
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# "SCSI disks" could be both SCSI or SATA - we can't know which
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# without probing them.
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} elsif ($^O eq 'freebsd') {
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opendir(DEV, '/dev');
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@drives = grep /^ada*[0-9]+$/, readdir DEV;
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closedir(DEV);
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} elsif ($^O eq 'solaris') {
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@drives = map { s@.*/@@ ; $_ } glob '/dev/rdsk/c*t*d*s2';
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}
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@drives = split ' ', $ENV{drives} if exists $ENV{drives};
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# Sort list of drives
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@drives = sort @drives;
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warn "[DEBUG] Drives: ",join(', ',@drives),"\n" if $DEBUG;
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if (defined $ARGV[0]) {
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if ($ARGV[0] eq 'autoconf') {
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if ($smartctl and -x $smartctl) {
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if (@drives) {
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my $cmd = command_for_drive_device($drives[0],
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device_for_drive($drives[0]));
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if (`$cmd` =~ /Temperature/) {
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print "yes\n";
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} else {
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print "no (first drive not supported, configure the plugin)\n";
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}
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exit 0;
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} else {
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print "no (no drives known)\n";
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exit 0;
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}
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} else {
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print "no (smartctl not found)\n";
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exit 0;
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}
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} elsif ($ARGV[0] eq 'config') {
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print "graph_title HDD temperature\n";
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print "graph_args --base 1000 -l 0\n";
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print "graph_vlabel temp in <20>C\n";
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print "graph_category sensors\n";
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print "graph_info This graph shows the temperature in degrees Celsius of the hard drives in the machine.\n";
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print "$_.label $_\n" foreach @drives;
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exit 0;
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}
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}
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foreach my $drive (@drives) {
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warn "[DEBUG] Processing $drive\n" if $DEBUG;
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my $fulldev = device_for_drive($drive);
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# Fall back to using hdparm for detecting disks in stand-by only if nocheck
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# isn't supported (hdparm isn't available on all platforms).
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if (!$use_nocheck && $hdparm && $fulldev =~ /\/dev\/[sh]d?/) {
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if (`$hdparm -C $fulldev 2>/dev/null` =~ /standby/) {
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warn "[DEBUG] Drive $fulldev is in standby mode, not checking\n"
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if $DEBUG;
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next;
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}
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}
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my $cmd = command_for_drive_device($drive, $fulldev, $use_nocheck);
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warn "[DEBUG] Command for $drive is % $cmd %\n" if $DEBUG;
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my $output = `$cmd`;
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if ($? ne 0) {
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print "$drive.value U\n";
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print "$drive.extinfo Command $cmd on drive $drive failed: $?. The plugin needs to have read permission on all monitored devices.\n";
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warn "[ERROR] Command $cmd on drive $drive failed: $?. The plugin needs to have read permission on all monitored devices.\n";
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next;
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}
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if ($output =~ /Current Drive Temperature:\s*(\d+)/) {
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print "$drive.value $1\n";
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} elsif ($output =~ /^(194 Temperature_Celsius.*)/m) {
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my @F = split /\s+/, $1;
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print "$drive.value $F[9]\n";
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} elsif ($output =~ /^(231 Temperature_Celsius.*)/m) {
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my @F = split ' ', $1;
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print "$drive.value $F[9]\n";
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} else {
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print "$drive.value U\n";
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print "$drive.extinfo Temperature not detected in smartctl output\n";
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}
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}
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sub device_for_drive {
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my ($drive) = @_;
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my $dev = $drive =~ /(.*)(?:_\d+)/ ? $1 : $drive;
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my $fulldev = '/dev/';
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$fulldev .= 'rdsk/' if $^O eq 'solaris';
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$fulldev .= exists $ENV{'dev_'.$drive} ? $ENV{'dev_'.$drive} : $dev;
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return $fulldev;
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}
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sub command_for_drive_device {
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my ($drive, $fulldev, $use_nocheck) = @_;
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my $cmd = $smartctl.' -A ';
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$cmd .= '--nocheck=standby ' if $use_nocheck;
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$cmd .= $ENV{'args_'.$drive}.' ' if exists $ENV{'args_'.$drive};
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$cmd .= '-d '.$ENV{'type_'.$drive}.' ' if exists $ENV{'type_'.$drive};
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$cmd .= $fulldev;
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}
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