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#!/usr/bin/perl -w
# ------------------------------------------------------------------------------
# File Name: chech_raid.pl
# Author: Thomas Nilsen - Norway
# Date: 14/06/2003
# Version: 0.1
# Description: This script will check to see if any software raid
# devices are down.
# Email: thomas.nilsen@doc-s.co.uk
# WWW: www.doc-s.co.uk
# ------------------------------------------------------------------------------
# Copyright 2003 (c) Thomas Nilsen
# Credits go to Ethan Galstad for coding Nagios
# License GPL
# ------------------------------------------------------------------------------
# Date Author Reason
# ---- ------ ------
# 2008-03-31 Peter Palfrader Return warning on running resync
# 2007-11-07 Peter Palfrader Return unknown if /proc/mdstat does not exist
# 05/10/2004 Peter Palfrader Make it work without that 'use util (vars)'
# 14/06/2003 TN Initial Release
# - Format of mdstat assumed to be "2 line" per
# device with [??] on the second line.
# ------------------------------------------------------------------------------
use strict;
use warnings;
use Getopt::Long;;
use vars qw($opt_V $opt_h $opt_t $opt_F $PROGNAME);
use lib '/usr/local/nagios/libexec/';
my $TIMEOUT=15;
my %ERRORS = ( OK => 0, WARNING => 1, CRITICAL => 2, UNKNOWN => -1 );
$PROGNAME="check_raid";
sub print_help ();
sub print_usage ();
$ENV{'PATH'}='';
$ENV{'BASH_ENV'}='';
$ENV{'ENV'}='';
my ( $line, $stat, $state ,@device, $msg, $status, $timeout);
$stat="/proc/mdstat";
#Option checking
Getopt::Long::Configure('bundling');
$status = GetOptions(
"V" => \$opt_V, "version" => \$opt_V,
"h" => \$opt_h, "help" => \$opt_h,
"F" => \$opt_F, "filename" => \$opt_F,
"t" => \$opt_t, "timeout" => \$opt_t);
# Version
if ($opt_V) {
print($PROGNAME,': $Revision: 0.1 $');
exit $ERRORS{'OK'};
}
# Help
if ($opt_h) {
print_help();
exit $ERRORS{'OK'};
}
# Filename supplied
if ($opt_F) {
$opt_F = shift;
$stat = $1 if ($opt_F =~ /^(.*)$/);
if ( ! -r $stat ) {
print "Invalid mdstat file: $opt_F\n";
exit $ERRORS{'UNKNOWN'};
}
}
$timeout = $TIMEOUT;
($opt_t) && ($opt_t =~ /^([0-9]+)$/) && ($timeout = $1);
# Just in case of problems, let's not hang Nagios
$SIG{'ALRM'} = sub {
print ("ERROR: No response (alarm)\n");
exit $ERRORS{'UNKNOWN'};
};
alarm($timeout);
# Start checking the file...
open (FH, $stat) or print("UNKNOWN: Cannot open $stat: $!\n"), exit $ERRORS{'UNKNOWN'};
$state = $ERRORS{'OK'};
$msg ="";
my @resyncing = ();
my $device = '';
# Now check the mdstat file..
while (<FH>) {
$line = $_;
if ($line =~ /^(md\S*) /) {
$device = $1;
} elsif( $line =~ / \[_|_\]|U_|_U /) {
$state = $ERRORS{'CRITICAL'};
$msg = $msg . $device . ": - ";
}
elsif ( $line =~ / resync /) {
# [==>..................] resync = 10.3% (15216320/146994624) finish=2153.2min speed=1018K/sec
my ($percent) = ($line =~ m# resync = ([0-9.]+%)#);
my ($finish) = ($line =~ m# finish=([0-9.]+min)#);
my ($speed) = ($line =~ m# speed=([0-9.]+K/sec)#);
push @resyncing, "$device ($percent done, finish in $finish at $speed)";
}
}
close (FH);
if ( $state == $ERRORS{'CRITICAL'} ) {
print "CRITICAL - Device(s) $msg have failed\n";
} elsif ( scalar @resyncing > 0 ) {
print "WARNING: Resyncing: ".(join "; ", @resyncing)."\n";
$state = $ERRORS{'WARNING'};
} elsif ( $state == $ERRORS{'OK'} )
{ print "OK - All devices are online\n"; }
exit $state;
sub print_usage () {
print "Usage: $PROGNAME -t <timeout> -F <filename>\n";
}
sub print_help () {
print_revision($PROGNAME,'$Revision: 0.1 $');
print "Copyright (c) 2003 Thomas Nilsen/Karl DeBisschop\n";
print "\n";
print_usage();
print "Checks the mdstat file for errors on any configured software raid.\n
-t ( --timeout=INTEGER)
Seconds before script times out (default: 10)\n
-F ( --filename=FILE)
Full path and name to mdstat file (usually '/proc/mdstat') \n\n";
}
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