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278 lines
8.8 KiB
278 lines
8.8 KiB
#!/usr/bin/perl -w
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use strict;
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use warnings;
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use Config::Simple '-strict';
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use Getopt::Long;
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use File::Basename;
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# Output file
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my $output = undef;
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# When a threshold can be automatically detected,
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# you may want to be notified before it's reached, so you can
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# set a margin which will be substracted from the real threshold
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my $temp_margin = '20';
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my $temp_hd_margin = '10';
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my $pwr_margin = '200';
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#This value will be substracted from the higher threshold to define the low one
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#so you can have hysteresis to prevent flip-flop
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my $temp_hyst = '10';
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my $temp_hd_hyst = '5';
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my $pwr_hyst = '200';
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GetOptions(
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"output=s" => \$output,
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"temp-margin=i" => \$temp_margin,
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"temp-hd-margin=i" => \$temp_hd_margin,
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"pwr-margin=i" => \$pwr_margin,
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"temp-hyst=i" => \$temp_hyst,
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"temp-hd-hyst=i" => \$temp_hd_hyst
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);
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sub usage(){
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print<<"_EOF";
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Usage: $0 --output=/etc/zabbix/sensors.ini
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_EOF
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}
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unless ($output){
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usage();
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exit 1;
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}
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# Path
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my $ipmitool = '/usr/bin/ipmitool';
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my $smartctl = '/usr/sbin/smartctl';
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# Default threshold if not detected
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my $def_temp_thres_high = '50';
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my $def_fan_thres_high = '1000';
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my $def_fan_thres_low = '700';
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my $def_pwr_thres_high = '1000';
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my $cfg = new Config::Simple(syntax => 'ini');
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my $sensors = {};
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# Try to detect IPMI sensors
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if (-x $ipmitool){
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# First check for temperature sensors
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my @lines = qx($ipmitool sdr type Temperature);
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if ($? == 0){
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SENSOR: foreach my $l (@lines){
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chomp $l;
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# Looks like
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# Inlet Temp | 04h | ok | 7.1 | 25 degrees C
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if ($l !~ m/^(\w+[\s\w]+?\w+)\s*\|.*\|\s*([\w\.\s]+)\s*\|.*\|\s*([\-\w\.\s]+)$/){
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next SENSOR;
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}
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my $name = $1;
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my $sensor = {};
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my @details = qx($ipmitool sdr get '$name');
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if ($? != 0){
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print "Couldn't get detail for sensor $name\n";
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next SENSOR;
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}
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foreach my $d (@details){
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chomp $d;
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if ($d =~ m/^\s*Sensor\sReading\s*:\s*(\w+)/){
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my $val = $1;
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if ($val !~ m/^\d+$/){
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print "Skipping sensor $name, couldn't parse its value: $val\n";
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next SENSOR;
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}
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}
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elsif ($d =~ m/^\s*Upper\scritical\s*:\s*(\d+(\.\d+))/){
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$sensor->{threshold_high} = $1-$temp_margin;
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}
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elsif ($d =~ m/^\s*Upper\snon\-critical\s*:\s*(\d+(\.\d+))/){
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$sensor->{threshold_low} = $1-$temp_margin;
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}
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}
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$sensor->{threshold_high} ||= $def_temp_thres_high;
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$sensor->{threshold_low} ||= $def_temp_thres_high-$temp_hyst;
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$sensor->{threshold_high} =~ s/\.0+$//;
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$sensor->{threshold_low} =~ s/\.0+$//;
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$sensor->{description} = $name;
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$sensor->{type} = 'temp';
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$sensor->{unit} = '°C';
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$sensor->{cmd} = "$ipmitool sdr get '$name' | grep 'Sensor Reading' | awk '{print \$4}'";
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my $id = lc $name;
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$id =~ s/\s/_/g;
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$sensors->{$id} = $sensor;
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print "Found a temperature sensor using IPMI: $name\n";
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}
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}
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# Now check for Fan, nearly the same as Temp, but
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# * We try to detect the unit
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# * threshold handling is not the same
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@lines = qx($ipmitool sdr type Fan);
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if ($? == 0){
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SENSOR: foreach my $l (@lines){
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chomp $l;
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$l =~ m/^(\w+[\s\w]+?\w+)\s*\|.*\|\s*([\w\.\s]+)\s*\|.*\|\s*([\-\w\.\s]+)$/;
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my $name = $1;
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my $value = my $val = $3;
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my $sensor = {};
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my @details = qx($ipmitool sdr get '$name');
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if ($? != 0){
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print "Couldn't get detail for sensor $name\n";
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next SENSOR;
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}
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foreach my $d (@details){
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chomp $d;
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if ($d =~ m/^\s*Sensor\sReading\s*:\s*(\w+)/){
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$val = $1;
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if ($val !~ m/^\d+$/){
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print "Skipping sensor $name, couldn't parse its value: $val\n";
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next SENSOR;
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}
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}
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elsif ($d =~ m/^\s*Lower\scritical\s*:\s*(\d+(\.\d+))/){
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$sensor->{threshold_low} = $1-$temp_margin;
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}
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elsif ($d =~ m/^\s*Lower\snon\-critical\s*:\s*(\d+(\.\d+))/){
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$sensor->{threshold_high} = $1-$temp_margin;
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}
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}
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$sensor->{threshold_high} ||= $def_fan_thres_high;
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$sensor->{threshold_low} ||= $def_fan_thres_high-$temp_hyst;
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$sensor->{threshold_high} =~ s/\.0+$//;
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$sensor->{threshold_low} =~ s/\.0+$//;
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$sensor->{description} = $name;
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$sensor->{type} = 'fan';
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$sensor->{unit} = ($value =~ m/percent|%/ || $val < 100) ? '%' : 'rpm';
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$sensor->{cmd} = "$ipmitool sdr get '$name' | grep 'Sensor Reading' | awk '{print \$4}'";
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my $id = lc $name;
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$id =~ s/\s/_/g;
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$sensors->{$id} = $sensor;
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print "Found a fan sensor using IPMI: $name\n";
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}
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}
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# Now look for power information
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@lines = qx($ipmitool sdr type 'Current');
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if ($? == 0){
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SENSOR: foreach my $l (@lines){
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chomp $l;
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$l =~ m/^(\w+[\s\w]+?\w+)\s*\|.*\|\s*([\w\.\s]+)\s*\|.*\|\s*([\-\w\.\s]+)$/;
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my $name = $1;
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my $val = $3;
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my $sensor = {};
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if ($name =~ m/Power|Pwr|Consumption/i || $val =~ m/W(att)?/i){
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my @details = qx($ipmitool sdr get '$name');
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if ($? != 0){
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print "Couldn't get detail for sensor $name\n";
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next SENSOR;
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}
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foreach my $d (@details){
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chomp $d;
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if ($d =~ m/^\s*Sensor\sReading\s*:\s*(\w+)/){
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$val = $1;
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if ($val !~ m/^\d+$/){
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print "Skipping sensor $name, couldn't parse its value: $val\n";
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next SENSOR;
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}
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}
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elsif ($d =~ m/^\s*Upper\scritical\s*:\s*(\d+(\.\d+))/){
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$sensor->{threshold_high} = $1-$pwr_margin;
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}
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elsif ($d =~ m/^\s*Upper\snon\-critical\s*:\s*(\d+(\.\d+))/){
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$sensor->{threshold_low} = $1-$pwr_margin;
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}
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}
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$sensor->{threshold_high} ||= $def_pwr_thres_high;
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$sensor->{threshold_low} ||= $def_pwr_thres_high-$pwr_hyst;
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$sensor->{threshold_high} =~ s/\.0+$//;
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$sensor->{threshold_low} =~ s/\.0+$//;
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$sensor->{description} = $name;
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$sensor->{type} = 'power';
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$sensor->{unit} = 'Watt';
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$sensor->{cmd} = "$ipmitool sdr get '$name' | grep 'Sensor Reading' | awk '{print \$4}'";
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my $id = lc $name;
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$id =~ s/\s/_/g;
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$sensors->{$id} = $sensor;
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print "Found a power sensor using IPMI: $name\n";
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}
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}
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}
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}
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# Now, try to detect smart capable HDD
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if (-x $smartctl){
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# This is copied from disco_smart_sudo, I should create a module to
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# consolidate this
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opendir(my $dh, "/sys/block") or die "Couldn't open /sys/block: $!";
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my @blocks = grep { $_ !~ m/^\./ } readdir($dh);
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closedir($dh);
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foreach my $block (@blocks){
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my $removable = 0;
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my $size = 1;
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# Skip block we already know they won't support SMART
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next if ($block =~ m/^(ram|loop|md|dm\-)\d+/);
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if ( -e "/sys/block/$block/removable"){
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open REMOVABLE, "/sys/block/$block/removable";
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$removable = join "", <REMOVABLE>;
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close REMOVABLE;
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chomp($removable);
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next if ($removable eq '1');
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}
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if ( -e "/sys/block/$block/size"){
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open SIZE, "/sys/block/$block/size";
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$size = join "", <SIZE>;
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close SIZE;
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chomp($size);
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next if ($size eq '0');
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}
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my @lines = qx($smartctl -A /dev/$block);
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next if ($? != 0);
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foreach my $l (@lines){
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if ($l =~ /Temperature_Celsius/){
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my $sensor = {
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description => "$block temperature",
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threshold_low => $def_temp_thres_high-$temp_hd_hyst,
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threshold_high => $def_temp_thres_high,
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type => 'temp',
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unit => '°C',
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cmd => "$smartctl -A /dev/$block | grep Temperature_Celsius | awk '{print \$10}'"
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};
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$sensors->{$block} = $sensor;
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print "Found a temperature sensor using smartctl: $block\n";
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last;
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}
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}
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}
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# Some LSI based hardware RAID controller can report HDD temp
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if (-e '/dev/megaraid_sas_ioctl_node'){
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# Only check for the firsts 26 drives
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foreach my $i (0..25){
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my @res = qx($smartctl -d megaraid,$i -A /dev/sda);
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next if ($? != 0);
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foreach my $l (@res){
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if ($l =~ m/Drive\sTrip\sTemperature:\s+(\d+)\s/){
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my $sensor = {
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description => "Temperature for disk No $i on sda",
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type => 'temp',
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threshold_high => $1-$temp_hd_margin,
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threshold_low => $1-$temp_hd_margin-$temp_hd_hyst,
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unit => '°C',
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cmd => "$smartctl -A -d megaraid,$i /dev/sda | grep 'Current Drive Temperature' | awk '{print \$4}'"
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};
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$sensors->{'sda-' . $i} = $sensor;
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print "Found a temperature sensor using smartctl (megaraid): sda-$i\n";
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}
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}
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}
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}
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}
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# TODO: add support for lm sensors, but its ouput is harder to parse
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foreach my $s (keys %$sensors){
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$cfg->set_block($s, $sensors->{$s});
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}
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$cfg->write($output);
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