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-rw-r--r--contrib/check_linux_raid.pl125
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diff --git a/contrib/check_linux_raid.pl b/contrib/check_linux_raid.pl
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1#!/usr/bin/perl -w
2
3# Copyright (c) 2002 ISOMEDIA, Inc.
4# originally written by Steve Milton
5# later updates by sean finney <seanius@seanius.net>
6#
7# This program is free software; you can redistribute it and/or modify
8# it under the terms of the GNU General Public License as published by
9# the Free Software Foundation; either version 2 of the License, or
10# (at your option) any later version.
11#
12# This program is distributed in the hope that it will be useful,
13# but WITHOUT ANY WARRANTY; without even the implied warranty of
14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15# GNU General Public License for more details.
16#
17# You should have received a copy of the GNU General Public License
18# along with this program; if not, write to the Free Software
19# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20#
21# Usage: check_raid [raid-name]
22# Example: check_raid md0
23# WARNING md0 status=[UUU_U], recovery=46.4%, finish=123.0min
24
25use strict;
26use lib "/usr/local/nagios/libexec";
27use utils qw(%ERRORS);
28
29# die with an error if we're not on Linux
30if ($^O ne 'linux') {
31 print "This plugin only applicable on Linux.\n";
32 exit $ERRORS{'UNKNOWN'};
33}
34
35sub max_state($$){
36 my ($a, $b) = @_;
37 if ($a eq "CRITICAL" || $b eq "CRITICAL") { return "CRITICAL"; }
38 elsif ($a eq "WARNING" || $b eq "WARNING") { return "WARNING"; }
39 elsif ($a eq "OK" || $b eq "OK") { return "OK"; }
40 elsif ($a eq "UNKNOWN" || $b eq "UNKNOWN") { return "UNKNOWN"; }
41 elsif ($a eq "DEPENDENT" || $b eq "DEPENDENT") { return "DEPENDENT"; }
42 return "UNKNOWN";
43}
44
45my $nextdev;
46if(defined $ARGV[0]) { $nextdev = shift; }
47else { $nextdev = "md[0-9]+"; }
48
49my $code = "UNKNOWN";
50my $msg = "";
51my %status;
52my %recovery;
53my %resyncing;
54my %finish;
55my %active;
56my %devices;
57
58while(defined $nextdev){
59 open (MDSTAT, "< /proc/mdstat") or die "Failed to open /proc/mdstat";
60 my $device = undef;
61 while(<MDSTAT>) {
62 if (defined $device) {
63 if (/(\[[_U]+\])/) {
64 $status{$device} = $1;
65 } elsif (/recovery =\s+(.*?)\s/) {
66 $recovery{$device} = $1;
67 ($finish{$device}) = /finish=(.*?min)/;
68 $device=undef;
69 } elsif (/resync =\s+(.*?)\s/) {
70 $resyncing{$device} = $1;
71 ($finish{$device}) = /finish=(.*?min)/;
72 $device=undef;
73 } elsif (/^\s*$/) {
74 $device=undef;
75 }
76 } elsif (/^($nextdev)\s*:/) {
77 $device=$1;
78 $devices{$device}=$device;
79 if (/\sactive/) {
80 $status{$device} = ''; # Shall be filled later if available
81 $active{$device} = 1;
82 }
83 }
84 }
85 $nextdev = shift;
86}
87
88foreach my $k (sort keys %devices){
89 if (!exists($status{$k})) {
90 $msg .= sprintf " %s inactive with no status information.",
91 $devices{$k};
92 $code = max_state($code, "CRITICAL");
93 } elsif ($status{$k} =~ /_/) {
94 if (defined $recovery{$k}) {
95 $msg .= sprintf " %s status=%s, recovery=%s, finish=%s.",
96 $devices{$k}, $status{$k}, $recovery{$k}, $finish{$k};
97 $code = max_state($code, "WARNING");
98 } else {
99 $msg .= sprintf " %s status=%s.", $devices{$k}, $status{$k};
100 $code = max_state($code, "CRITICAL");
101 }
102 } elsif ($status{$k} =~ /U+/) {
103 if (defined $resyncing{$k}) {
104 $msg .= sprintf " %s status=%s, resync=%s, finish=%s.",
105 $devices{$k}, $status{$k}, $resyncing{$k}, $finish{$k};
106 $code = max_state($code, "WARNING");
107 } else {
108 $msg .= sprintf " %s status=%s.", $devices{$k}, $status{$k};
109 $code = max_state($code, "OK");
110 }
111 } else {
112 if ($active{$k}) {
113 $msg .= sprintf " %s active with no status information.",
114 $devices{$k};
115 $code = max_state($code, "OK");
116 } else {
117 # This should't run anymore, but is left as a catch-all
118 $msg .= sprintf " %s does not exist.\n", $devices{$k};
119 $code = max_state($code, "CRITICAL");
120 }
121 }
122}
123
124print $code, $msg, "\n";
125exit ($ERRORS{$code});