/usr/lib/nagios/plugins/check_multipath is in nagios-plugins-contrib 9.20140106.
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#
# DESCRIPTION: Nagios plugin for checking the status of multipath devices on Linux servers.
#
#
# AUTHOR: Hinnerk Rümenapf (hinnerk.ruemenapf@rrz.uni-hamburg.de)
# Based on work by
# - Trond H. Amundsen <t.h.amundsen@usit.uio.no>
# - Gunther Schlegel <schlegel@riege.com>
# - Matija Nalis <mnalis+debian@carnet.hr>
#
#---------------------------------------------------
#
# == IMPORTANT ==
#
# "sudo" must be configured to allow 'multipath -l'
# for the NAGIOS-user without password
#
#---------------------------------------------------
#
#
# $Id: $
#
# Copyright (C) 2011-2013
# Hinnerk Rümenapf, Trond H. Amundsen, Gunther Schlegel, Matija Nalis,
# Bernd Zeimetz, Sven Anders
#
# 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 3 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, see <http://www.gnu.org/licenses/>.
#
#
# Vs 0.0.1 Initial Version
# 0.0.2 added check if path is 'active', fixed messages sorting,
# shorter messages, path state line check more flexible
#
# 0.1.0 added support for older 'multipath'-tool version, added
# testcase 14 and 15
#
# 0.1.1 bugfix, improved flexibility, added testcases 16 and 17
# 0.1.2 added support for more 'multipath'-tool versions, added testcases 18 and 19
# 0.1.3 minor improvements
# 0.1.4 add hostname to "unknown error" message, improve help text
# 0.1.5 add debian testcases and patch by Bernd Zeimetz
# 0.1.6 Added checklunline test for "-" character, thanks to Sven Anders <s.anders@digitec.de> also for test data (testcase 22)
# 0.1.7 Added test option
# 0.1.8 Added Support for LUN names without HEX-ID (e.g. iSCSI LUNs)
# 0.1.9 Added extraconfig option
use strict;
use warnings;
use Switch;
use POSIX qw(isatty);
use Getopt::Long qw(:config no_ignore_case);
# Global (package) variables used throughout the code
use vars qw( $NAME $VERSION $AUTHOR $CONTACT $E_OK $E_WARNING $E_CRITICAL
$E_UNKNOWN $USAGE $HELP $LICENSE $SUDO $MULTIPATH
$linebreak $counter $exit_code
%opt %reverse_exitcode %text2exit @multipathStateLines %nagios_level_count
@perl_warnings @reports @ok_reports @debugInput
);
#---------------------------------------------------------------------
# Initialization and global variables
#---------------------------------------------------------------------
# === Version and similar info ===
$NAME = 'check-multipath.pl';
$VERSION = '0.1.9 06. MAR. 2013';
$AUTHOR = 'Hinnerk Rümenapf';
$CONTACT = 'hinnerk.ruemenapf@uni-hamburg.de hinnerk.ruemenapf@gmx.de';
# Collect perl warnings in an array
$SIG{__WARN__} = sub { push @perl_warnings, [@_]; };
#---------------------------------------------
# TESTCASES
#
# These testcases are important documentation
# and thus included in the script!
#---------------------------------------------
@debugInput=(
# 0. DUMMY
"",
# 1. OK, 2 LUNs, 4 paths each (REAL example)
"mpathb (36000d774000045f655ea91cb4ea41d6f) dm-1 FALCON,IPSTOR DISK\n"
."size=1.9T features='1 queue_if_no_path' hwhandler='0' wp=rw\n"
."`-+- policy='round-robin 0' prio=1 status=active\n"
." |- 4:0:1:1 sdd 8:48 active ready running\n"
." |- 4:0:0:1 sdf 8:80 active ready running\n"
." |- 3:0:0:1 sdh 8:112 active ready running\n"
." `- 3:0:1:1 sdk 8:160 active ready running\n"
."mpatha (36000d77b000048d117c68c81bf7c160a) dm-0 FALCON,IPSTOR DISK\n"
."size=2.0T features='1 queue_if_no_path' hwhandler='0' wp=rw\n"
."`-+- policy='round-robin 0' prio=1 status=active\n"
." |- 4:0:1:0 sdc 8:32 active ready running\n"
." |- 4:0:0:0 sde 8:64 active ready running\n"
." |- 3:0:0:0 sdg 8:96 active ready running\n"
." `- 3:0:1:0 sdi 8:128 active ready running\n",
# 2. WARN, 2 LUNs, one path missing (REAL example)
"mpathb (36000d774000045f655ea91cb4ea41d6f) dm-1 FALCON,IPSTOR DISK\n"
."size=1.9T features='1 queue_if_no_path' hwhandler='0' wp=rw\n"
."`-+- policy='round-robin 0' prio=1 status=active\n"
." |- 3:0:0:1 sdf 8:80 active ready running\n"
." |- 4:0:0:1 sdi 8:128 active ready running\n"
." `- 4:0:1:1 sdk 8:160 active ready running\n"
."mpatha (36000d77b000048d117c68c81bf7c160a) dm-0 FALCON,IPSTOR DISK\n"
."size=2.0T features='1 queue_if_no_path' hwhandler='0' wp=rw\n"
."`-+- policy='round-robin 0' prio=1 status=active\n"
." |- 3:0:0:0 sdc 8:32 active ready running\n"
." |- 4:0:0:0 sdg 8:96 active ready running\n"
." |- 3:0:1:0 sdh 8:112 active ready running\n"
." `- 4:0:1:0 sde 8:64 active ready running\n",
# 3. ERR, 2 LUNs, no paths (REAL example)
"mpathb (36000d774000045f655ea91cb4ea41d6f) dm-1 \n"
."size=1.9T features='1 queue_if_no_path' hwhandler='0' wp=rw\n"
."mpatha (36000d77b000048d117c68c81bf7c160a) dm-0 \n"
."size=2.0T features='1 queue_if_no_path' hwhandler='0' wp=rw\n",
#4. OK, 1 LUN, 4 paths (edit)
"mpathb (36000d774000045f655ea91cb4ea41d6f) dm-1 FALCON,IPSTOR DISK\n"
."size=1.9T features='1 queue_if_no_path' hwhandler='0' wp=rw\n"
."`-+- policy='round-robin 0' prio=1 status=active\n"
." |- 4:0:1:1 sdd 8:48 active ready running\n"
." |- 4:0:0:1 sdf 8:80 active ready running\n"
." |- 3:0:0:1 sdh 8:112 active ready running\n"
." `- 3:0:1:1 sdk 8:160 active ready running\n",
#5. WARN, 1 LUN, 2 paths (edit)
"mpathb (36000d774000045f655ea91cb4ea41d6f) dm-1 FALCON,IPSTOR DISK\n"
."size=1.9T features='1 queue_if_no_path' hwhandler='0' wp=rw\n"
."`-+- policy='round-robin 0' prio=1 status=active\n"
." |- 4:0:1:1 sdd 8:48 active ready running\n"
." `- 3:0:1:1 sdk 8:160 active ready running\n",
#6. WARN, 1 LUN, 1 path (edit)
"mpathb (36000d774000045f655ea91cb4ea41d6f) dm-1 FALCON,IPSTOR DISK\n"
."size=1.9T features='1 queue_if_no_path' hwhandler='0' wp=rw\n"
."`-+- policy='round-robin 0' prio=1 status=active\n"
." `- 3:0:1:1 sdk 8:160 active ready running\n",
#7. WARN, 1 LUN, 1 no paths (edit)
"mpathb (36000d774000045f655ea91cb4ea41d6f) dm-1 \n"
."size=1.9T features='1 queue_if_no_path' hwhandler='0' wp=rw\n",
#8. WARN 2 LUNs, 4 paths each, TEST: failed/faulty (edit)
"mpathb (36000d774000045f655ea91cb4ea41d6f) dm-1 FALCON,IPSTOR DISK\n"
."size=1.9T features='1 queue_if_no_path' hwhandler='0' wp=rw\n"
."`-+- policy='round-robin 0' prio=1 status=active\n"
." |- 4:0:1:1 sdd 8:48 active ready running\n"
." |- 4:0:0:1 sdf 8:80 failed ready running\n"
." |- 3:0:0:1 sdh 8:112 active faulty running\n"
." `- 3:0:1:1 sdk 8:160 dadada ready running\n"
."mpatha (36000d77b000048d117c68c81bf7c160a) dm-0 FALCON,IPSTOR DISK\n"
."size=2.0T features='1 queue_if_no_path' hwhandler='0' wp=rw\n"
."`-+- policy='round-robin 0' prio=1 status=active\n"
." |- 4:0:1:0 sdc 8:32 faulty ready running\n"
." |- 4:0:0:0 sde 8:64 dadada ready failed\n"
." `- 3:0:1:0 sdi 8:128 active ready running\n",
#9. NO LUN
"",
#10. Syntax error 1
"mpathb (36000d774000045f655ea91cb4ea41d6f) dm-1 FALCON,IPSTOR DISK\n"
."size=1.9T features='1 queue_if_no_path' hwhandler='0' wp=rw\n"
."`-+- policy='round-robin 0' prio=1 status=active\n"
."4:0:1:1 sdd 8:48 active ready running\n"
." |- 4:0:0:1 sdf 8:80 failed ready running\n"
." |- 3:0:0:1 sdh 8:112 active faulty running\n"
." `- 3:0:1:1 sdk 8:160 active ready running\n",
# 11. Syntax error 2
"mpatha 36000d77b000048d117c68c81bf7c160a) dm-0 FALCON,IPSTOR DISK\n"
."size=2.0T features='1 queue_if_no_path' hwhandler='0' wp=rw\n"
."`-+- policy='round-robin 0' prio=1 status=active\n"
." |- 4:0:1:0 sdc 8:32 faulty ready running\n"
." |- 4:0:0:0 sde 8:64 active ready failed\n"
." `- 3:0:1:0 sdi 8:128 active ready running\n",
# 12. Syntax error 3
"mpatha (36000d77b000048d117c68c81bf7c160a) dm-0 FALCON,IPSTOR DISK\n"
."sisze=2.0T features='1 queue_if_no_path' hwhandler='0' wp=rw\n"
."`-+- policy='round-robin 0' prio=1 status=active\n"
." |- 4:0:1:0 sdc 8:32 faulty ready running\n"
." |- 4:0:0:0 sde 8:64 active ready failed\n"
." `- 3:0:1:0 sdi 8:128 active ready running\n",
#13. Syntax error 4
" |- 4:0:1:1 sdd 8:48 active ready running\n"
." `- 3:0:1:1 sdk 8:160 active ready running\n",
#14. old syntax OK (REAL example)
"mpathb (36000d774000045f655ea91cb4ea41d6f) dm-1 FALCON,IPSTOR DISK\n"
."[size=1.9T][features=1 queue_if_no_path][hwhandler=0][rw]\n"
."\\_ round-robin 0 [prio=-4][active]\n"
." \\_ 3:0:1:1 sde 8:64 [active][undef]\n"
." \\_ 3:0:0:1 sdi 8:128 [active][undef]\n"
." \\_ 4:0:1:1 sdj 8:144 [active][undef]\n"
." \\_ 4:0:0:1 sdf 8:80 [active][undef]\n"
."mpatha (36000d77b000048d117c68c81bf7c160a) dm-0 FALCON,IPSTOR DISK\n"
."[size=2.0T][features=1 queue_if_no_path][hwhandler=0][rw]\n"
."\\_ round-robin 0 [prio=-4][active]\n"
." \\_ 3:0:0:0 sdg 8:96 [active][undef]\n"
." \\_ 3:0:1:0 sdc 8:32 [active][undef]\n"
." \\_ 4:0:0:0 sdd 8:48 [active][undef]\n"
." \\_ 4:0:1:0 sdh 8:112 [active][undef]\n",
#15. old syntax ERR (edit)
"mpathb (36000d774000045f655ea91cb4ea41d6f) dm-1 FALCON,IPSTOR DISK\n"
."[size=1.9T][features=1 queue_if_no_path][hwhandler=0][rw]\n"
."\\_ round-robin 0 [prio=-4][active]\n"
." \\_ 3:0:1:1 sde 8:64 [fault][undef]\n"
." \\_ 4:0:1:1 sdj 8:144 [active][undef]\n"
." \\_ 4:0:0:1 sdf 8:80 [active][undef]\n"
."mpatha (36000d77b000048d117c68c81bf7c160a) dm-0 FALCON,IPSTOR DISK\n"
."[size=2.0T][features=1 queue_if_no_path][hwhandler=0][rw]\n"
."\\_ round-robin 0 [prio=-4][active]\n"
." \\_ 3:0:0:0 sdg 8:96 [active][undef]\n"
." \\_ 3:0:1:0 sdc 8:32 [dadada][undef]\n"
." \\_ 4:0:0:0 sdd 8:48 [active][fail]\n"
." \\_ 4:0:1:0 sdh 8:112 [fault][undef]\n",
#16. Other sample (REAL example, thanks to Kai Groshert)
"36006016019e02a00d009495ddbf3e011 dm-2 DGC,VRAID\n"
."size=450G features='1 queue_if_no_path' hwhandler='1 emc' wp=rw\n"
."|-+- policy='round-robin 0' prio=0 status=active\n"
."| |- 2:0:0:1 sdi 8:128 active undef running\n"
."| `- 1:0:0:1 sdc 8:32 active undef running\n"
."`-+- policy='round-robin 0' prio=0 status=enabled\n"
." |- 1:0:1:1 sdf 8:80 active undef running\n"
." `- 2:0:1:1 sdl 8:176 active undef running\n"
."36006016019e02a008e1c5f67dbf3e011 dm-5 DGC,VRAID\n"
."size=550G features='1 queue_if_no_path' hwhandler='1 emc' wp=rw\n"
."|-+- policy='round-robin 0' prio=0 status=active\n"
."| |- 1:0:1:2 sdg 8:96 active undef running\n"
."| `- 2:0:1:2 sdm 8:192 active undef running\n"
."`-+- policy='round-robin 0' prio=0 status=enabled\n"
." |- 1:0:0:2 sdd 8:48 active undef running\n"
." `- 2:0:0:2 sdj 8:144 active undef running\n"
."36003005700f0eb70160c9b590a77c13e dm-0 LSI,RAID 5/6 SAS 6G\n"
."size=136G features='0' hwhandler='0' wp=rw\n"
."`-+- policy='round-robin 0' prio=0 status=active\n"
." `- 0:2:0:0 sda 8:0 active undef running\n",
#17. Other sample, modified (thanks to Kai Groshert)
"36006016019e02a00d009495ddbf3e011 dm-2 DGC,VRAID\n"
."size=450G features='1 queue_if_no_path' hwhandler='1 emc' wp=rw\n"
."|-+- policy='round-robin 0' prio=0 status=active\n"
."| |- 2:0:0:1 sdi 8:128 active undef running\n"
."| `- 1:0:0:1 sdc 8:32 undef undef running\n"
."`-+- policy='round-robin 0' prio=0 status=enabled\n"
." |- 1:0:1:1 sdf 8:80 active undef running\n"
." `- 2:0:1:1 sdl 8:176 active undef running\n"
."36006016019e02a008e1c5f67dbf3e011 dm-5 DGC,VRAID\n"
."size=550G features='1 queue_if_no_path' hwhandler='1 emc' wp=rw\n"
."|-+- policy='round-robin 0' prio=0 status=active\n"
."| |- 1:0:1:2 sdg 8:96 active undef running\n"
."`-+- policy='round-robin 0' prio=0 status=enabled\n"
." |- 1:0:0:2 sdd 8:48 active undef running\n"
." `- 2:0:0:2 sdj 8:144 failed undef dadada\n"
."36003005700f0eb70160c9b590a77c13e dm-0 LSI,RAID 5/6 SAS 6G\n"
."size=136G features='0' hwhandler='0' wp=rw\n"
."`-+- policy='round-robin 0' prio=0 status=active\n"
." `- 0:2:0:0 sda 8:0 active undef running\n",
#18. RedHat 4 sample, (thanks to Sébastien Maury)
"MYVOLUME (36005076801810523100000000000006f)\n"
."[size=576 GB][features=\"1 queue_if_no_path\"][hwhandler=\"0\"]\n"
."\\_ round-robin 0 [active]\n"
." \\_ 13:0:1:0 sdc 8:32 [active]\n"
." \\_ 13:0:2:0 sdd 8:48 [active]\n"
." \\_ 13:0:3:0 sde 8:64 [active]\n"
." \\_ 13:0:4:0 sdf 8:80 [active]\n"
." \\_ 14:0:1:0 sdh 8:112 [active]\n"
." \\_ 14:0:2:0 sdi 8:128 [active]\n"
." \\_ 14:0:3:0 sdj 8:144 [active]\n"
." \\_ 14:0:4:0 sdk 8:160 [active]\n",
#19. RedHat 4 sample, modified (thanks to Sébastien Maury)
"MYVOLUME (36005076801810523100000000000006f)\n"
."[size=576 GB][features=\"1 queue_if_no_path\"][hwhandler=\"0\"]\n"
."\\_ round-robin 0 [active]\n"
." \\_ 13:0:1:0 sdc 8:32 [active]\n"
." \\_ 13:0:2:0 sdd 8:48 [active]\n"
." \\_ 13:0:3:0 sde 8:64 [failed]\n"
." \\_ 13:0:4:0 sdf 8:80 [active]\n"
." \\_ 14:0:1:0 sdh 8:112 [faulty]\n"
." \\_ 14:0:2:0 sdi 8:128 [active]\n"
." \\_ 14:0:3:0 sdj 8:144 [dadada]\n"
." \\_ 14:0:4:0 sdk 8:160 [active]\n",
#20. netapp / Debian Squeeze sample (thanks to Bernd Zeimetz)
"foobar_backup_lun0 (360a98aaaa72d444e423464685a786175) dm-1 NETAPP,LUN\n"
."size=299G features='1 queue_if_no_path' hwhandler='0' wp=rw\n"
."|-+- policy='round-robin 0' prio=8 status=active\n"
."| |- 0:0:0:0 sda 8:0 active ready running\n"
."| `- 1:0:0:0 sde 8:64 active ready running\n"
."`-+- policy='round-robin 0' prio=2 status=enabled\n"
." |- 0:0:1:0 sdb 8:16 active ready running\n"
." `- 1:0:1:0 sdf 8:80 active ready running\n"
."foobar_postgresql_lun0 (360a98aaaa470505a684a656930385a4a) dm-2 NETAPP,LUN\n"
."size=4.9T features='1 queue_if_no_path' hwhandler='0' wp=rw\n"
."|-+- policy='round-robin 0' prio=8 status=active\n"
."| |- 0:0:2:0 sdc 8:32 active ready running\n"
."| `- 1:0:2:0 sdg 8:96 active ready running\n"
."`-+- policy='round-robin 0' prio=2 status=enabled\n"
." |- 0:0:3:0 sdd 8:48 active ready running\n"
." `- 1:0:3:0 sdh 8:112 active ready running\n",
#21. netapp / Debian Squeeze failed path sample (thanks to Bernd Zeimetz)
"foobar_postgresql_lun0 (360a98aaaa470505a684a656930385a4a) dm-2 NETAPP,LUN\n"
."size=299G features='1 queue_if_no_path' hwhandler='0' wp=rw\n"
."`-+- policy='round-robin 0' prio=0 status=enabled\n"
." `- #:#:#:# - #:# active faulty running\n",
#22. "-" in LUN name (thanks to Sven Anders <s.anders@digitec.de>)
"tex-lun4 (3600000e00d0000000002161200120000) dm-7 FUJITSU ,ETERNUS_DXL\n"
."[size=1.2T][features=1 queue_if_no_path][hwhandler=0]\n"
."\\_ round-robin 0 [prio=0][active]\n"
." \\_ 7:0:1:4 sdt 65:48 [active][undef]\n"
." \\_ 2:0:1:4 sdu 65:64 [active][undef]\n"
."tex-lun3 (3600000e00d0000000002161200110000) dm-8 FUJITSU ,ETERNUS_DXL\n"
."[size=1.0T][features=1 queue_if_no_path][hwhandler=0]\n"
."\\_ round-robin 0 [prio=0][active]\n"
." \\_ 2:0:1:3 sds 65:32 [active][undef]\n"
." \\_ 7:0:1:3 sdr 65:16 [active][undef]\n",
#23. LUN without HEX-ID (iSCSI) thanks to Ernest Beinrohr <Ernest.Beinrohr@axonpro.sk>
"1STORAGE_server_target2 dm-2 IET,VIRTUAL-DISK\n"
."size=1.0T features='0' hwhandler='0' wp=rw\n"
."`-+- policy='round-robin 0' prio=0 status=active\n"
." |- 9:0:0:1 sdc 8:32 active undef running\n"
." `- 10:0:0:1 sdd 8:48 active undef running\n",
#24. LUN without HEX-ID (iSCSI) thanks to Ernest Beinrohr <Ernest.Beinrohr@axonpro.sk>
"1STORAGE_server_target2 dm-2 IET,VIRTUAL-DISK\n"
."size=1.0T features='0' hwhandler='0' wp=rw\n"
."`-+- policy='round-robin 0' prio=1 status=active\n"
." |- 9:0:0:1 sdc 8:32 active ready running\n"
." `- 10:0:0:1 sdd 8:48 failed faulty running\n",
);
# Commands with path
$SUDO = '/usr/bin/sudo';
$MULTIPATH = '/sbin/multipath -l 2>/dev/null';
# Exit codes
$E_OK = 0;
$E_WARNING = 1;
$E_CRITICAL = 2;
$E_UNKNOWN = 3;
# Nagios error levels reversed
%reverse_exitcode
= (
0 => 'OK',
1 => 'WARNING',
2 => 'CRITICAL',
3 => 'UNKNOWN',
);
# Translate text exit codes to values
%text2exit
= ( 'ok' => $E_OK,
'warning' => $E_WARNING,
'critical' => $E_CRITICAL,
'unknown' => $E_UNKNOWN,
);
# Usage text
$USAGE = <<"END_USAGE";
Usage: $NAME [OPTION]...
END_USAGE
# Help text
$HELP = <<'END_HELP';
check-multipath.pl - Nagios plugin to check multipath connections
see:
http://exchange.nagios.org/directory/Plugins/Operating-Systems/Linux/check-2Dmultipath-2Epl/details
http://www.nagios.org/documentation
OPTIONS:
-s, --state Prefix alerts with alert state
-S, --short-state Prefix alerts with alert state abbreviated
-h, --help Display this help text
-V, --version Display version info
-v, --verbose
-m, --min-paths Low mark, less paths per LUN are CRITICAL [2]
-o, --ok-paths High mark, less paths per LUN raise WARNING [4]
-n, --no-multipath Exitcode for no LUNs or no multipath driver [warning]
-l, --linebreak Define end-of-line string:
REG regular UNIX-Newline
HTML <br/>
-other- use specified string as linebreak symbol, e.g. ' '
-e, --extraconfig Specify different low/high thresholds for LUNs:
"<LUN>,<LOW>,<HIGH>:" for each LUN with deviant thresholds
e.g. "iscsi_lun_01,2,2:dummyLun,1,1:paranoid_lun,8,16:"
"oddLun,3,3:"
Use option -v to see LUN names used by this plugin.
-d, --di Run testcase instead of real check [0]
-t, --test Do not display testcase input, just result
-h, --help Display this message
END_HELP
# Version and license text
$LICENSE = <<"END_LICENSE";
$NAME $VERSION
Copyright (C) 2011-2013 $AUTHOR
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Written by
$AUTHOR <$CONTACT>
Thanks for contributions to
Bernd Zeimetz, Sven Anders and others
Based on work by
- Trond H. Amundsen <t.h.amundsen\@usit.uio.no>
- Gunther Schlegel <schlegel\@riege.com>
- Matija Nalis <mnalis+debian\@carnet.hr>
END_LICENSE
# Options with default values
%opt
= ( #'timeout' => 5, # default timeout is 5 seconds
'help' => 0,
'version' => 0,
'no_multipath' => 'warning',
'min-paths' => 2,
'ok-paths' => 4,
'state' => 0,
'di' => 0,
'shortstate' => 0,
'linebreak' => undef,
'extraconfig' => '',
'verbose' => 0,
'test' => 0,
);
# Get options
GetOptions(#'t|timeout=i' => \$opt{timeout},
'h|help' => \$opt{help},
'V|version' => \$opt{version},
'n|no-multipath=s' => \$opt{no_multipath},
'm|min-paths=i' => \$opt{"min-paths"},
'o|ok-paths=i' => \$opt{"ok-paths"},
'd|di=i' => \$opt{"di"},
's|state' => \$opt{state},
'S|short-state' => \$opt{shortstate},
'l|linebreak=s' => \$opt{linebreak},
'e|extraconfig=s' => \$opt{extraconfig},
'v|verbose' => \$opt{verbose},
't|test' => \$opt{test},
) or do { print $USAGE; exit $E_UNKNOWN };
# If user requested help
if ($opt{'help'}) {
print $USAGE, $HELP;
exit $E_OK;
}
# If user requested version info
if ($opt{'version'}) {
print $LICENSE;
exit $E_OK;
}
# Reports (messages) are gathered in this array
@reports = ();
#
# DOES NOT WORK when calling commands with qx()
#
# Setting timeout
#$SIG{ALRM} = sub {
# print "PLUGIN TIMEOUT: $NAME timed out after $opt{timeout} seconds\n";
# exit $E_UNKNOWN;
#};
#alarm $opt{timeout};
# Default line break
$linebreak = isatty(*STDOUT) ? "\n" : '<br/>';
# Line break from option
if (defined $opt{linebreak}) {
if ($opt{linebreak} eq 'REG') {
$linebreak = "\n";
}
elsif ($opt{linebreak} eq 'HTML') {
$linebreak = '<br/>';
}
else {
$linebreak = $opt{linebreak};
}
} # if
# extraconfig option
my %extraconfig = ();
if ($opt{extraconfig} ne '') {
if ($opt{extraconfig} !~ m!^(:?[\w\-]+,\d+,\d+:)+$! ) {
unknown_error("Wrong usage of '--extraconfig' option: '"
. $opt{extraconfig}
. "' syntax error. See help information.");
} # if
while ( $opt{extraconfig} =~ m!(:?[\w\-]+),(\d+),(\d+):+!g ) {
my $name =$1;
my $crit =$2;
my $warn =$3;
if ($crit > $warn) {
unknown_error("Error in '--extraconfig' option '"
. $opt{extraconfig}
. "' for LUN '$name': critical threshold ($crit) must not be higher than warning threshold ($warn).");
} # if
#print "\n ['$name', '$crit', '$warn' ] \n";
$extraconfig{$name} = {'warn' => $warn, 'crit' => $crit};
} # while
} # if
# Check syntax of '--no-multipath' option
if (!exists $text2exit{$opt{no_multipath}}) {
unknown_error("Wrong usage of '--no-multipath' option: '"
. $opt{no_multipath}
. "' is not a recognized keyword");
}
# Check min-paths option
if ( $opt{"min-paths"} < 1 ) {
unknown_error("Wrong usage of '--min-paths' option: '"
. $opt{"min-paths"}
. "' (must be at least 1)");
}
# Check ok-paths option
if ( $opt{"ok-paths"} < $opt{"min-paths"} ) {
unknown_error("Wrong usage of '--ok-paths' option: '"
. $opt{"ok-paths"}
. "' (must NOT be less than '--min-paths': "
. $opt{"min-paths"}
. ")") ;
}
# Check di (Debug-Input) option
if ( $opt{"di"} > $#debugInput ) {
unknown_error("Wrong usage of '--di' option: '"
. $opt{"di"}
. "' (must NOT be bigger than: "
. $#debugInput
. ")") ;
}
#---------------------------------------------------------------------
# Functions
#---------------------------------------------------------------------
#---------------------------------------
#
# Store a message in the message array
#
sub report {
my ($msg, $exval) = @_;
return push @reports, [ $msg, $exval ];
}
#---------------------------------------
#
# Give an error and exit with unknown state
#
sub unknown_error {
my $msg = shift;
my $hostname = qx('hostname'); # add hostname to error message
chomp $hostname;
if ($opt{"test"}) {
print "ERROR: $msg |TESTCASE|\n";
} else {
print "ERROR: $msg |Host: $hostname|\n";
}
exit $E_UNKNOWN;
}
#---------------------------------------
#
# get output of multipath -l
# or debug input (testcase)
#
sub get_multipath_text {
my $output = "";
if ( ! $opt{"di"} ) { # normal action
#print "Reale USER-ID : $< Effektive USER-ID : $>\n";
#print getpwuid( $< )."\n";
my $command = "";
if ($< == 0 ) { # called by root?
$command = $MULTIPATH; # use command "as is"
} else {
$command = "$SUDO $MULTIPATH"; # otherwise: use sudo
}
#print "[$command]\n";
$output = qx($command);
my $err = $!;
if ($? != 0) {
# if no multipath driver found just set empty string (no LUNs)
if ( $output =~ m/multipath kernel driver not loaded/ ) {
$output = "";
} else {
if ($< != 0) {
# (root) NOPASSWD: /sbin/multipath -l
my $sudoListCommand = "$SUDO -l 2>/dev/null";
my $sudoList = qx($sudoListCommand);
if ($sudoList !~ m!\(root\) \s+ NOPASSWD\: \s+ /sbin/multipath \s+ \-l!x ) {
unknown_error ("'sudo' not configured for command: '$MULTIPATH'?" );
} # if
} # if
unknown_error ("command '$command' FAILED: '$output', '$err'");
}
}
#print "-----\ndi=". $opt{"di"} ."\n-----\n[". $output ."]\n-----\n\n";
} else { # TESTCASE
$output = $debugInput[$opt{"di"}];
if (!$opt{"test"} ) {
print "=====\nTESTCASE di=". $opt{"di"} ."\n-----\n". $output ."=====\n";
} # if
}
$output =~ s/[\[\]\\]+/ /g; # substitute special characters with space
my @textArray = split (/[\n\r]+/, $output); # Array of text lines
return \@textArray;
}
#---------------------------------------
#
# check if text is a LUN description line
# if so, set variables for new LUN
#
sub checkLunLine {
my ($textLine, $rCurrentLun, $rLunPaths) = @_;
#print "checkLunLine: '$textLine'\n";
# mpathb (36000d774000045f655ea91cb4ea41d6f) dm-1 FALCON,IPSTOR DISK
# mpathb (36000d774000045f655ea91cb4ea41d6f) dm-1
# MYVOLUME (36005076801810523100000000000006f)
# tex-lun4 (3600000e00d0000000002161200120000) dm-7 FUJITSU ,ETERNUS_DXL
if ($textLine =~ m/^([\w\-]+) \s+ \([0-9a-fA-F]+\)/x) {
$$rCurrentLun = $1; # do initialisations for new LUN
#report("named LUN $$rCurrentLun found", $E_OK);
$$rLunPaths{$$rCurrentLun} = 0;
return 1;
}
# 36006016019e02a00d009495ddbf3e011 dm-2 DGC,VRAID
elsif ($textLine =~ m/^[0-9a-fA-F]+ \s+ ([\w\-\_]+)/x) {
$$rCurrentLun = $1; # do initialisations for new LUN
#report("simple LUN $$rCurrentLun found", $E_OK);
$$rLunPaths{$$rCurrentLun} = 0;
return 1;
}
# iscsi-LUN example
# 1STORAGE_server_target2 dm-2 IET,VIRTUAL-DISK
#elsif ($textLine =~ m/^([\w\-]+) \s+ [a-z]+\-\d+/x) {
elsif ($textLine =~ m/^([\w\-]+) \s+ [a-z]+\-\d+ \s+ [\w\-\,]+/x) {
$$rCurrentLun = $1; # do initialisations for new LUN
#report("LUN without HEX-ID $$rCurrentLun found", $E_OK);
$$rLunPaths{$$rCurrentLun} = 0;
return 1;
}
else {
return 0;
} # if
} # sub
#---------------------------------------
#
# check if text is a policy description line
#
sub checkPolicyLine {
my ($textLine) = @_;
#print "checkPolicyLine: '$textLine'\n";
# `-+- policy='round-robin 0' prio=-1 status=active
# |-+- policy='round-robin 0' prio=0 status=active
##\_ round-robin 0 [prio=-4][active]
## _ round-robin 0 prio=-4 active
#\_ round-robin 0 [active]
# _ round-robin 0 active
#if ( $textLine =~ m/^[|\`\-\+_\s]+ \s+ (?:policy=\')?[\w\.\-\_]+ \s \d(?:\')? \s+ prio=/x ) {
if ( $textLine =~ m/^[|\`\-\+_\s]+ \s+ (?:policy=\')?[\w\.\-\_]+ \s \d(?:\')? \s+ \w+/x ) {
return 1;
} else {
return 0;
} # if
} # sub
#---------------------------------------
#
# analyse multipath state
# (output lines)
#
sub checkMultipathText {
my ($rTextArray) = @_;
my $state = "pathDesc";
my $currentLun = "";
my %lunPaths = ();
my $i = 0;
foreach my $textLine (@$rTextArray) {
$i++;
#print "$i:\n";
switch($state) {
# initial state: look for path state, new LUN Name, policy
case "pathDesc"
{ # check for path status line
# |- 3:0:0:1 sdf 8:80 active undef running
## \_ 3:0:1:1 sde 8:64 [active][undef]
## _ 3:0:1:1 sde 8:64 active undef
## \_ 13:0:1:0 sdc 8:32 [active]
## _ 13:0:1:0 sdc 8:32 active
# (thanks to Bernd Zeimetz)
# `- #:#:#:# - #:# active faulty running
#if ( $textLine =~ m/^[\s_\|\-\`\\\+]+ [\d\:]+ \s+ (\w+) \s+ [\d\:]+ \s+ \w+ \s+ \w+/xi ) {
if ( $textLine =~ m/^[\s_\|\-\`\\\+]+ [#\d\:]+ \s+ ([\w\-]+) \s+ [#\d\:]+ \s+ \w+/xi ) {
my $pathName = $1;
#print "'$textLine', ";
#print "LUN '$currentLun', path '$pathName'\n";
if ($textLine =~ m/fail|fault/) { # fail or fault?
#print "FAULT: $textLine\n";
report("LUN $currentLun, path $pathName: ERROR.", $E_WARNING);
}
elsif ($textLine !~ m/\sactive\s/) { # path is active?
#print "NOT active: $textLine\n";
report("LUN $currentLun, path $pathName: NOT active.", $E_WARNING);
}
else {
if ( $currentLun eq "") { # YES => check logic, increase path count for LUN
unknown_error ("Path info before LUN name. Line $i:\n'$textLine'")
}
$lunPaths{$currentLun}++;
} # if
} # check for new LUN name
elsif ( checkLunLine ($textLine, \$currentLun, \%lunPaths) ) {
$state="lunInfo";
} # check for new LUN name
elsif ( ($currentLun ne "") && checkPolicyLine ($textLine) ) {
; # SKIP NESTED POLICY
} else { # error: unknown line format
unknown_error ("Line $i not recognised. Expected path info, new LUN or nested policy:\n'$textLine'")
}
} # case
# after new LUN was found skip the INFO-Line (nothing else...)
case "lunInfo" {
if ( $currentLun eq "") { # check logic
unknown_error ("No current LUN while looking for LUN info. Line $i:\n'$textLine'")
}
# size=2.0T features='1 queue_if_no_path' hwhandler='0' wp=rw
##[size=1.9T][features=1 queue_if_no_path][hwhandler=0][rw]
## size=1.9T features=1 queue_if_no_path hwhandler=0 rw
#[size=576 GB][features="1 queue_if_no_path"][hwhandler="0"]
# size=576 GB features="1 queue_if_no_path" hwhandler="0"
#if ($textLine =~ m/^\s*size=[\w\.]+\s+features=/x) {
if ($textLine =~ m/^\s*size=[\w\.]+\s+ ([a-zA-Z]+\s+)? features=/x) {
$state = "pathPolicy";
} else { # error: unknown line format
unknown_error ("Line $i not recognised. Expected LUN info:\n'$textLine'")
}
} # case
# after LUN info was found skip the path policy (nothing else...)
# or handle new LUN if no paths available
case "pathPolicy" {
if ( $currentLun eq "") { # check logic
unknown_error ("No current LUN while looking for path policy. Line $i:\'$textLine'")
}
if ( checkPolicyLine ($textLine) ) {
$state = "pathDesc";
} # new LUN found
elsif ( checkLunLine ($textLine, \$currentLun, \%lunPaths) ) {
$state = "lunInfo";
} else { # error: unknown line format
unknown_error ("Line $i not recognised. Expected path policy or new LUN:\n'$textLine'")
}
} # case
} # switch
} # foreach
return \%lunPaths
} # sub
#=====================================================================
# Main program
#=====================================================================
my @multipathStateText = @{ get_multipath_text() }; # get input data
my %lunPaths = %{checkMultipathText ( \@multipathStateText )}; # analyse it
# if no LUN found...
if (scalar keys %lunPaths == 0) {
report ("No LUN found or no multipath driver.", $text2exit{$opt{no_multipath}});
}
#
# Check path count for each LUN
#
foreach my $lunName ( sort {$a cmp $b} keys %lunPaths) {
my $pathCount = $lunPaths{$lunName};
my $warn = $opt{'ok-paths'};
my $crit = $opt{'min-paths'};
# $extraconfig{$name} = {'warn' => $warn, 'crit' => $crit};
if (defined ($extraconfig{$lunName}) ) { # deviant thresholds from options?
$warn = ${$extraconfig{$lunName}}{'warn'};
$crit = ${$extraconfig{$lunName}}{'crit'};
#print "$lunName: $pathCount EXTRA: crit=$crit, warn=$warn\n";
} else {
#print "$lunName: $pathCount STANDARD\n";
}# if
if ($pathCount < $crit){
report("LUN $lunName: less than $crit paths ($pathCount/$warn)!", $E_CRITICAL);
} elsif ($pathCount < $warn){
report("LUN $lunName: less than $warn paths ($pathCount/$warn).", $E_WARNING);
} else {
report("LUN $lunName: $pathCount/$warn.", $E_OK);
}
} # foreach
# Counter variable
%nagios_level_count
= (
'OK' => 0,
'WARNING' => 0,
'CRITICAL' => 0,
'UNKNOWN' => 0,
);
# holds only ok messages
@ok_reports = ();
# Reset the WARN signal
$SIG{__WARN__} = 'DEFAULT';
# Print any perl warnings that have occured
if (@perl_warnings) {
foreach (@perl_warnings) {
chop @$_;
report("INTERNAL ERROR: @$_", $E_UNKNOWN);
} # foreach
} # if
$counter = 0;
ALERT:
foreach (sort {$a->[1] <= $b->[1]} @reports) {
my ($msg, $level) = @{ $_ };
$nagios_level_count{$reverse_exitcode{$level}}++;
# Prefix with nagios level if specified with option '--state'
$msg = $reverse_exitcode{$level} . ": $msg" if $opt{state};
# Prefix with one-letter nagios level if specified with option '--short-state'
$msg = (substr $reverse_exitcode{$level}, 0, 1) . ": $msg" if $opt{shortstate};
if ($level == $E_OK && !$opt{verbose}) {
push @ok_reports, $msg;
next ALERT;
}
($counter++ == 0) ? print $msg : print $linebreak, $msg;
} # foreach
# Determine our exit code
$exit_code = $E_OK;
if ($nagios_level_count{UNKNOWN} > 0) { $exit_code = $E_UNKNOWN; }
if ($nagios_level_count{WARNING} > 0) { $exit_code = $E_WARNING; }
if ($nagios_level_count{CRITICAL} > 0) { $exit_code = $E_CRITICAL; }
# Print OK messages
$counter = 0;
if ($exit_code == $E_OK && !$opt{verbose}) {
foreach my $msg (@ok_reports) {
($counter++ == 0) ? print $msg : print $linebreak, $msg;
} # foreach
} # if
print $linebreak;
#print "$exit_code\n";
# Exit with proper exit code
exit $exit_code;
|