File check_smart.pl of Package monitoring-plugins-smart
#!/usr/bin/perl -w
# Check SMART status of ATA/SCSI disks, returning any usable metrics as perfdata.
# For usage information, run ./check_smart -h
#
# This script was created under contract for the US Government and is therefore Public Domain
#
# Changes and Modifications
# =========================
# Feb 3, 2009: Kurt Yoder - initial version of script (rev 1.0)
# Jul 8, 2013: Claudio Kuenzler - support hardware raids like megaraid (rev 2.0)
# Jul 9, 2013: Claudio Kuenzler - update help output (rev 2.1)
# Oct 11, 2013: Claudio Kuenzler - making the plugin work on FreeBSD (rev 3.0)
# Oct 11, 2013: Claudio Kuenzler - allowing -i sat (SATA on FreeBSD) (rev 3.1)
# Nov 4, 2013: Claudio Kuenzler - works now with CCISS on FreeBSD (rev 3.2)
# Nov 4, 2013: Claudio Kuenzler - elements in grown defect list causes warning (rev 3.3)
# Nov 6, 2013: Claudio Kuenzler - add threshold option "bad" (-b) (rev 4.0)
# Nov 7, 2013: Claudio Kuenzler - modified help (rev 4.0)
# Nov 7, 2013: Claudio Kuenzler - bugfix in threshold logic (rev 4.1)
# Mar 19, 2014: Claudio Kuenzler - bugfix in defect list perfdata (rev 4.2)
# Apr 22, 2014: Jerome Lauret - implemented -g to do a global lookup (rev 5.0)
# Apr 25, 2014: Claudio Kuenzler - cleanup, merge Jeromes code, perfdata output fix (rev 5.1)
# May 5, 2014: Caspar Smit - Fixed output bug in global check / issue #3 (rev 5.2)
use strict;
use Getopt::Long;
use File::Basename qw(basename);
my $basename = basename($0);
my $revision = '$Revision: 5.2 $';
use FindBin;
use lib $FindBin::Bin;
use utils qw(%ERRORS &print_revision &support &usage);
$ENV{'PATH'}='/bin:/usr/bin:/sbin:/usr/sbin:/usr/local/bin:/usr/local/sbin';
$ENV{'BASH_ENV'}='';
$ENV{'ENV'}='';
use vars qw($opt_b $opt_d $opt_g $opt_debug $opt_h $opt_i $opt_v);
Getopt::Long::Configure('bundling');
GetOptions(
"debug" => \$opt_debug,
"b=i" => \$opt_b, "bad=i" => \$opt_b,
"d=s" => \$opt_d, "device=s" => \$opt_d,
"g=s" => \$opt_g, "global=s" => \$opt_g,
"h" => \$opt_h, "help" => \$opt_h,
"i=s" => \$opt_i, "interface=s" => \$opt_i,
"v" => \$opt_v, "version" => \$opt_v,
);
if ($opt_v) {
print_revision($basename,$revision);
exit $ERRORS{'OK'};
}
if ($opt_h) {
print_help();
exit $ERRORS{'OK'};
}
my ($device, $interface) = qw//;
if ($opt_d || $opt_g ) {
unless($opt_i){
print "must specify an interface for $opt_d using -i/--interface!\n\n";
print_help();
exit $ERRORS{'UNKNOWN'};
}
# list of devices for a loop
my(@dev);
if ( $opt_d ){
# normal mode - push opt_d on the list of devices
push(@dev,$opt_d);
} else {
# glob all devices - try '?' first
@dev =glob($opt_g."?");
}
foreach my $opt_dl (@dev){
warn "Found $opt_dl\n" if $opt_debug;
if (-b $opt_dl || -c $opt_dl){
$device .= $opt_dl.":";
} else {
warn "$opt_dl is not a valid block/character special device!\n\n" if $opt_debug;
}
}
if ( ! defined($device) ){
print "Could not find any valid block/character special device for ".
($opt_d?"device $opt_d ":"pattern $opt_g")." !\n\n";
exit $ERRORS{'UNKNOWN'};
}
# Allow all device types currently supported by smartctl
# See http://sourceforge.net/apps/trac/smartmontools/wiki/Supported_RAID-Controllers
if ($opt_i =~ m/(ata|scsi|3ware|areca|hpt|cciss|megaraid|sat)/) {
$interface = $opt_i;
} else {
print "invalid interface $opt_i for $opt_d!\n\n";
print_help();
exit $ERRORS{'UNKNOWN'};
}
}
if ($device eq "") {
print "must specify a device!\n\n";
print_help();
exit $ERRORS{'UNKNOWN'};
}
my $smart_command = 'sudo smartctl';
my $exit_status = 'OK';
my $exit_status_local = 'OK';
my $status_string = '';
my $perf_string = '';
my $Terminator = ' --- ';
foreach $device ( split(":",$device) ){
my @error_messages = qw//;
my($status_string_local)='';
my($tag,$label);
$exit_status_local = 'OK';
if ($opt_g){
# we had a pattern based on $opt_g
$tag = $device;
$tag =~ s/$opt_g//;
$label = "[$device] - ";
} else {
# we had a device specified using $opt_d (traditional)
$label = "";
$tag = $device;
}
warn "###########################################################\n" if $opt_debug;
warn "(debug) CHECK 1: getting overall SMART health status for $tag \n" if $opt_debug;
warn "###########################################################\n\n\n" if $opt_debug;
my $full_command = "$smart_command -d $interface -H $device";
warn "(debug) executing:\n$full_command\n\n" if $opt_debug;
my @output = `$full_command`;
warn "(debug) output:\n@output\n\n" if $opt_debug;
# parse ata output, looking for "health status: passed"
my $found_status = 0;
my $line_str = 'SMART overall-health self-assessment test result: '; # ATA SMART line
my $ok_str = 'PASSED'; # ATA SMART OK string
if ($interface =~ m/(scsi|cciss)/){
$line_str = 'SMART Health Status: '; # SCSI and CCISS SMART line
$ok_str = 'OK'; #SCSI and CCISS SMART OK string
}
foreach my $line (@output){
if($line =~ /$line_str(.+)/){
$found_status = 1;
warn "(debug) parsing line:\n$line\n\n" if $opt_debug;
if ($1 eq $ok_str) {
warn "(debug) found string '$ok_str'; status OK\n\n" if $opt_debug;
}
else {
warn "(debug) no '$ok_str' status; failing\n\n" if $opt_debug;
push(@error_messages, "Health status: $1");
escalate_status('CRITICAL');
}
}
}
unless ($found_status) {
push(@error_messages, 'No health status line found');
escalate_status('UNKNOWN');
}
warn "###########################################################\n" if $opt_debug;
warn "(debug) CHECK 2: getting silent SMART health check\n" if $opt_debug;
warn "###########################################################\n\n\n" if $opt_debug;
$full_command = "$smart_command -d $interface -q silent -A $device";
warn "(debug) executing:\n$full_command\n\n" if $opt_debug;
system($full_command);
my $return_code = $?;
warn "(debug) exit code:\n$return_code\n\n" if $opt_debug;
if ($return_code & 0x01) {
push(@error_messages, 'Commandline parse failure');
escalate_status('UNKNOWN');
}
if ($return_code & 0x02) {
push(@error_messages, 'Device could not be opened');
escalate_status('UNKNOWN');
}
if ($return_code & 0x04) {
push(@error_messages, 'Checksum failure');
escalate_status('WARNING');
}
if ($return_code & 0x08) {
push(@error_messages, 'Disk is failing');
escalate_status('CRITICAL');
}
if ($return_code & 0x10) {
push(@error_messages, 'Disk is in prefail');
escalate_status('WARNING');
}
if ($return_code & 0x20) {
push(@error_messages, 'Disk may be close to failure');
escalate_status('WARNING');
}
if ($return_code & 0x40) {
push(@error_messages, 'Error log contains errors');
escalate_status('WARNING');
}
if ($return_code & 0x80) {
push(@error_messages, 'Self-test log contains errors');
escalate_status('WARNING');
}
if ($return_code && !$exit_status_local) {
push(@error_messages, 'Unknown return code');
escalate_status('CRITICAL');
}
if ($return_code) {
warn "(debug) non-zero exit code, generating error condition\n\n" if $opt_debug;
} else {
warn "(debug) zero exit code, status OK\n\n" if $opt_debug;
}
warn "###########################################################\n" if $opt_debug;
warn "(debug) CHECK 3: getting detailed statistics\n" if $opt_debug;
warn "(debug) information contains a few more potential trouble spots\n" if $opt_debug;
warn "(debug) plus, we can also use the information for perfdata/graphing\n" if $opt_debug;
warn "###########################################################\n\n\n" if $opt_debug;
$full_command = "$smart_command -d $interface -A $device";
warn "(debug) executing:\n$full_command\n\n" if $opt_debug;
@output = `$full_command`;
warn "(debug) output:\n@output\n\n" if $opt_debug;
my @perfdata = qw//;
# separate metric-gathering and output analysis for ATA vs SCSI SMART output
# Yeah - but megaraid is the same output as ata
if ($interface =~ m/(ata|megaraid|sat)/) {
foreach my $line(@output){
# get lines that look like this:
# 9 Power_On_Minutes 0x0032 241 241 000 Old_age Always - 113h+12m
next unless $line =~ /^\s*\d+\s(\S+)\s+(?:\S+\s+){6}(\S+)\s+(\d+)/;
my ($attribute_name, $when_failed, $raw_value) = ($1, $2, $3);
if ($when_failed ne '-'){
push(@error_messages, "Attribute $attribute_name failed at $when_failed");
escalate_status('WARNING');
warn "(debug) parsed SMART attribute $attribute_name with error condition:\n$when_failed\n\n" if $opt_debug;
}
# some attributes produce questionable data; no need to graph them
if (grep {$_ eq $attribute_name} ('Unknown_Attribute', 'Power_On_Minutes') ){
next;
}
push (@perfdata, "$attribute_name=$raw_value") if $opt_d;
# do some manual checks
if ( ($attribute_name eq 'Current_Pending_Sector') && $raw_value ) {
if ($opt_b) {
if (($raw_value > 0) && ($raw_value >= $opt_b)) {
push(@error_messages, "$raw_value Sectors pending re-allocation");
escalate_status('WARNING');
warn "(debug) Current_Pending_Sector is non-zero ($raw_value)\n\n" if $opt_debug;
}
elsif (($raw_value > 0) && ($raw_value < $opt_b)) {
push(@error_messages, "$raw_value Sectors pending re-allocation (but less than threshold $opt_b)");
warn "(debug) Current_Pending_Sector is non-zero ($raw_value) but less than $opt_b\n\n" if $opt_debug;
}
} else {
push(@error_messages, "Sectors pending re-allocation");
escalate_status('WARNING');
warn "(debug) Current_Pending_Sector is non-zero ($raw_value)\n\n" if $opt_debug;
}
}
}
} else {
my ($current_temperature, $max_temperature, $current_start_stop, $max_start_stop) = qw//;
foreach my $line(@output){
if ($line =~ /Current Drive Temperature:\s+(\d+)/){
$current_temperature = $1;
}
elsif ($line =~ /Drive Trip Temperature:\s+(\d+)/){
$max_temperature = $1;
}
elsif ($line =~ /Current start stop count:\s+(\d+)/){
$current_start_stop = $1;
}
elsif ($line =~ /Recommended maximum start stop count:\s+(\d+)/){
$max_start_stop = $1;
}
elsif ($line =~ /Elements in grown defect list:\s+(\d+)/){
my $defectlist = $1;
# check for elements in grown defect list
if ($opt_b) {
push (@perfdata, "defect_list=$defectlist;;$opt_b") if $opt_d;
if (($defectlist > 0) && ($defectlist >= $opt_b)) {
push(@error_messages, "$defectlist Elements in grown defect list (threshold $opt_b)");
escalate_status('WARNING');
warn "(debug) Elements in grown defect list is non-zero ($defectlist)\n\n" if $opt_debug;
}
elsif (($defectlist > 0) && ($defectlist < $opt_b)) {
push(@error_messages, "Note: $defectlist Elements in grown defect list");
warn "(debug) Elements in grown defect list is non-zero ($defectlist) but less than $opt_b\n\n" if $opt_debug;
}
}
else {
if ($defectlist > 0) {
push (@perfdata, "defect_list=$defectlist") if $opt_d;
push(@error_messages, "$defectlist Elements in grown defect list");
escalate_status('WARNING');
warn "(debug) Elements in grown defect list is non-zero ($defectlist)\n\n" if $opt_debug;
}
}
}
elsif ($line =~ /Blocks sent to initiator =\s+(\d+)/){
push (@perfdata, "sent_blocks=$1") if $opt_d;
}
}
if($current_temperature){
if($max_temperature){
push (@perfdata, "temperature=$current_temperature;;$max_temperature") if $opt_d;
if($current_temperature > $max_temperature){
warn "(debug) Disk temperature is greater than max ($current_temperature > $max_temperature)\n\n" if $opt_debug;
push(@error_messages, 'Disk temperature is higher than maximum');
escalate_status('CRITICAL');
}
}
else{
push (@perfdata, "temperature=$current_temperature") if $opt_d;
}
}
if($current_start_stop){
if($max_start_stop){
push (@perfdata, "start_stop=$current_start_stop;$max_start_stop") if $opt_d;
if($current_start_stop > $max_start_stop){
warn "(debug) Disk start_stop is greater than max ($current_start_stop > $max_start_stop)\n\n" if $opt_debug;
push(@error_messages, 'Disk start_stop is higher than maximum');
escalate_status('WARNING');
}
}
else{
push (@perfdata, "start_stop=$current_start_stop") if $opt_d;
}
}
}
warn "(debug) gathered perfdata:\n@perfdata\n\n" if $opt_debug;
$perf_string = join(' ', @perfdata);
warn "###########################################################\n" if $opt_debug;
warn "(debug) LOCAL STATUS: $exit_status_local, FINAL STATUS: $exit_status\n" if $opt_debug;
warn "###########################################################\n\n\n" if $opt_debug;
if($exit_status_local ne 'OK'){
if ($opt_g) {
$status_string_local = $label.join(', ', @error_messages);
$status_string .= $status_string_local.$Terminator;
}
else {
$status_string = join(', ', @error_messages);
}
}
else {
if ($opt_g) {
$status_string_local = $label."Device is clean";
$status_string .= $status_string_local.$Terminator;
}
else {
$status_string = "no SMART errors detected. ".join(', ', @error_messages);
}
}
}
warn "(debug) final status/output: $exit_status\n" if $opt_debug;
$status_string =~ s/$Terminator$//;
print "$exit_status: $status_string|$perf_string\n";
exit $ERRORS{$exit_status};
sub print_help {
print_revision($basename,$revision);
print "\nUsage: $basename {-d=<block device>|-g=<block device regex>} -i=(ata|scsi|3ware,N|areca,N|hpt,L/M/N|cciss,N|megaraid,N) [-b N] [--debug]\n\n";
print "At least one of the below. -d supersedes -g\n";
print " -d/--device: a physical block device to be SMART monitored, eg /dev/sda\n";
print " -g/--global: a regular expression name of physical devices to be SMART monitored\n";
print " Example: /dev/sd will search for all /dev/sd* devices and report errors globally.\n";
print "Note that -g only works with a fixed interface input (e.g. scsi, ata), not with special interface ids like cciss,1\n";
print "\n";
print "Other options\n";
print " -i/--interface: device's interface type\n";
print " (See http://sourceforge.net/apps/trac/smartmontools/wiki/Supported_RAID-Controllers for interface convention)\n";
print " -b/--bad: Threshold value (integer) when to warn for N bad entries\n";
print " -h/--help: this help\n";
print " --debug: show debugging information\n";
print " -v/--version: Version number\n";
}
# escalate an exit status IFF it's more severe than the previous exit status
sub escalate_status {
my $requested_status = shift;
# no test for 'CRITICAL'; automatically escalates upwards
if ($requested_status eq 'WARNING') {
return if ($exit_status|$exit_status_local) eq 'CRITICAL';
}
if ($requested_status eq 'UNKNOWN') {
return if ($exit_status|$exit_status_local) eq 'WARNING';
return if ($exit_status|$exit_status_local) eq 'CRITICAL';
}
$exit_status = $requested_status;
$exit_status_local = $requested_status;
}
