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#!/usr/bin/perl -w
# Copyright (c) 2002 ISOMEDIA, Inc.
# originally written by Steve Milton
# later updates by sean finney <seanius@seanius.net>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# Usage: check_raid [raid-name]
# Example: check_raid md0
# WARNING md0 status=[UUU_U], recovery=46.4%, finish=123.0min
use strict;
use lib "/usr/lib/nagios/plugins";
use utils qw(%ERRORS);
# die with an error if we're not on Linux
if ($^O ne 'linux') {
print "This plugin only applicable on Linux.\n";
exit $ERRORS{'UNKNOWN'};
}
sub max_state($$){
my ($a, $b) = @_;
if ($a eq "CRITICAL" || $b eq "CRITICAL") { return "CRITICAL"; }
elsif ($a eq "WARNING" || $b eq "WARNING") { return "WARNING"; }
elsif ($a eq "OK" || $b eq "OK") { return "OK"; }
elsif ($a eq "UNKNOWN" || $b eq "UNKNOWN") { return "UNKNOWN"; }
elsif ($a eq "DEPENDENT" || $b eq "DEPENDENT") { return "DEPENDENT"; }
return "UNKNOWN";
}
my $nextdev;
if(defined $ARGV[0]) { $nextdev = shift; }
else { $nextdev = "md[0-9]+"; }
my $code = "UNKNOWN";
my $msg = "";
my %status;
my %recovery;
my %finish;
my %active;
my %devices;
while(defined $nextdev){
open (MDSTAT, "< /proc/mdstat") or die "Failed to open /proc/mdstat";
my $device = undef;
while(<MDSTAT>) {
if (defined $device) {
if (/(\[[_U]+\])/) {
$status{$device} = $1;
} elsif (/recovery = (.*?)\s/) {
$recovery{$device} = $1;
($finish{$device}) = /finish=(.*?min)/;
$device=undef;
} elsif (/^\s*$/) {
$device=undef;
}
} elsif (/^($nextdev)\s*:/) {
$device=$1;
$devices{$device}=$device;
if (/\sactive/) {
$status{$device} = ''; # Shall be filled later if available
$active{$device} = 1;
}
}
}
$nextdev = shift;
}
foreach my $k (sort keys %devices){
if (!exists($status{$k})) {
$msg .= sprintf " %s inactive with no status information.",
$devices{$k};
$code = max_state($code, "CRITICAL");
} elsif ($status{$k} =~ /_/) {
if (defined $recovery{$k}) {
$msg .= sprintf " %s status=%s, recovery=%s, finish=%s.",
$devices{$k}, $status{$k}, $recovery{$k}, $finish{$k};
$code = max_state($code, "WARNING");
} else {
$msg .= sprintf " %s status=%s.", $devices{$k}, $status{$k};
$code = max_state($code, "CRITICAL");
}
} elsif ($status{$k} =~ /U+/) {
$msg .= sprintf " %s status=%s.", $devices{$k}, $status{$k};
$code = max_state($code, "OK");
} else {
if ($active{$k}) {
$msg .= sprintf " %s active with no status information.",
$devices{$k};
$code = max_state($code, "OK");
} else {
# This should't run anymore, but is left as a catch-all
$msg .= sprintf " %s does not exist.\n", $devices{$k};
$code = max_state($code, "CRITICAL");
}
}
}
print $code, $msg, "\n";
exit ($ERRORS{$code});
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