/usr/share/check_mk/checks/multipath is in check-mk-server 1.2.6p12-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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# -*- encoding: utf-8; py-indent-offset: 4 -*-
# +------------------------------------------------------------------+
# | ____ _ _ __ __ _ __ |
# | / ___| |__ ___ ___| | __ | \/ | |/ / |
# | | | | '_ \ / _ \/ __| |/ / | |\/| | ' / |
# | | |___| | | | __/ (__| < | | | | . \ |
# | \____|_| |_|\___|\___|_|\_\___|_| |_|_|\_\ |
# | |
# | Copyright Mathias Kettner 2014 mk@mathias-kettner.de |
# +------------------------------------------------------------------+
#
# This file is part of Check_MK.
# The official homepage is at http://mathias-kettner.de/check_mk.
#
# check_mk 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 in version 2. check_mk is distributed
# in the hope that it will be useful, but WITHOUT ANY WARRANTY; with-
# out even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE. See the GNU General Public License for more de-
# ails. You should have received a copy of the GNU General Public
# License along with GNU Make; see the file COPYING. If not, write
# to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
# Boston, MA 02110-1301 USA.
# Configuration for using alias instead of UUID
inventory_multipath_rules = []
# Output from multipath -l has the following possible formats:
# orabase.lun50 (360a9800043346937686f456f59386741) dm-15 NETAPP,LUN
# [size=25G][features=1 queue_if_no_path][hwhandler=0]
# \_ round-robin 0 [prio=0][active]
# \_ 1:0:3:50 sdy 65:128 [active][undef]
# \_ 3:0:3:50 sdz 65:144 [active][undef]
# An alias might not be defined. The out is then:
# 360a980004334644d654a364469555a76
# [size=300 GB][features="0"][hwhandler="0"]
# \_ round-robin 0 [active]
# \_ 1:0:2:13 sdc 8:32 [active][ready]
# \_ 3:0:2:13 sdl 8:176 [active][ready]
# Might also be local disks:
# SFUJITSU_MAW3073NC_DBL2P62003VT
# [size=68 GB][features="0"][hwhandler="0"]
# \_ round-robin 0 [active]
# \_ 0:0:3:0 sdb 8:16 [active][ready]
# Some very special header line
# (No space between uuid and dm-* - strange...)
# 360a980004334644d654a316e65306e51dm-4 NETAPP,LUN
# [size=30G][features=1 queue_if_no_path][hwhandler=0]
# \_ round-robin 0 [prio=0][active]
# \_ 1:0:2:50 sdg 8:96 [active][undef]
# \_ round-robin 0 [prio=0][enabled]
# \_ 4:0:1:50 sdl 8:176 [active][undef]
# And another one:
# 1494554000000000052303250303700000000000000000000 dm-0 IET,VIRTUAL-DISK
# [size=70G][features=0][hwhandler=0][rw]
# \_ round-robin 0 [prio=-1][active]
# \_ 3:0:0:0 sdb 8:16 [active][undef]
# \_ round-robin 0 [prio=-1][enabled]
# \_ 4:0:0:0 sdc 8:32 [active][undef]
# Other output from other host:
# anzvol2 (36005076306ffc648000000000000510a) dm-15 IBM,2107900
# [size=100G][features=0][hwhandler=0]
# \_ round-robin 0 [prio=-6][active]
# \_ 4:0:5:1 sdbf 67:144 [active][undef]
# \_ 4:0:4:1 sdau 66:224 [active][undef]
# \_ 4:0:3:1 sdaj 66:48 [active][undef]
# \_ 3:0:5:1 sdy 65:128 [active][undef]
# \_ 3:0:4:1 sdn 8:208 [active][undef]
# \_ 3:0:3:1 sdc 8:32 [active][undef]
# anzvol1 (36005076306ffc6480000000000005005) dm-16 IBM,2107900
# [size=165G][features=0][hwhandler=0]
# \_ round-robin 0 [prio=-6][active]
# \_ 4:0:5:0 sdbe 67:128 [active][undef]
# \_ 4:0:4:0 sdat 66:208 [active][undef]
# \_ 4:0:3:0 sdai 66:32 [active][undef]
# \_ 3:0:5:0 sdx 65:112 [active][undef]
# \_ 3:0:4:0 sdm 8:192 [active][undef]
# \_ 3:0:3:0 sdb 8:16 [active][undef]
# And one other output (ID has not 33 times A-Z0-9):
# mpath1 (SIBM_____SwapA__________DA02BF71)
# [size=41 GB][features="0"][hwhandler="0"]
# \_ round-robin 0 [active]
# \_ 1:0:1:0 sdd 8:48 [active]
# Recently I've seen this output >:-P
# 360080e500017bd72000002eb4c1b1ae8 dm-1 IBM,1814 FAStT
# size=350G features='1 queue_if_no_path' hwhandler='1 rdac' wp=rw
# `-+- policy='round-robin 0' prio=-1 status=active
# |- 7:0:2:81 sdd 8:48 active undef running
# `- 8:0:2:81 sdp 8:240 active undef running
# And this has been seen on SLES 11 SP1 64 Bit:
# 3600508b40006d7da0001a00004740000 dm-0 HP,HSV210
# size=10G features='1 queue_if_no_path' hwhandler='0' wp=rw
# |-+- policy='round-robin 0' prio=-1 status=active
# | |- 2:0:0:1 sda 8:0 active undef running
# | `- 3:0:0:1 sdo 8:224 active undef running
# `-+- policy='round-robin 0' prio=-1 status=enabled
# |- 3:0:1:1 sdv 65:80 active undef running
# `- 2:0:1:1 sdh 8:112 active undef running
# This is another output, which made problems up to
# 1.1.12:
#
# SDDN_S2A_9900_1308xxxxxxxx dm-13 DDN,S2A 9900
# [size=7.3T][features=0][hwhandler=0][rw]
# \_ round-robin 0 [prio=0][active]
# \_ 3:0:1:11 sdaj 66:48 [failed][undef]
# \_ 4:0:0:11 sdbh 67:176 [failed][undef]
# \_ 4:0:2:11 sddd 70:176 [active][undef]
# \_ 3:0:2:11 sdeb 128:48 [active][undef]
# \_ round-robin 0 [prio=0][enabled]
# \_ 4:0:1:11 sdcf 69:48 [active][undef]
# \_ 3:0:0:11 sdl 8:176 [active][undef]
# Just an underscore and a dash in the LUN name
# SDataCoreSANsymphony_DAT05-fscl dm-6 DataCore,SANsymphony
# [size=600G][features=0][hwhandler=0]
# \_ round-robin 0 [prio=-1][enabled]
# \_ 3:0:0:11 sdae 65:224 [active][undef]
# \_ round-robin 0 [prio=-1][enabled]
# \_ 4:0:0:11 sdt 65:48 [active][undef]
# This one here is from RedHat 6. Very creative...
# 1IET 00010001 dm-4 IET,VIRTUAL-DISK
# size=200G features='0' hwhandler='0' wp=rw
# |-+- policy='round-robin 0' prio=0 status=active
# | `- 23:0:0:1 sdk 8:160 active undef running
# |-+- policy='round-robin 0' prio=0 status=enabled
# | `- 21:0:0:1 sdj 8:144 active undef running
# |-+- policy='round-robin 0' prio=0 status=enabled
# | `- 22:0:0:1 sdg 8:96 active undef running
# `-+- policy='round-robin 0' prio=0 status=enabled
# `- 20:0:0:1 sdi 8:128 active undef running
# And a completely new situation:
# <<<multipath>>>
# Nov 05 17:17:03 | DM multipath kernel driver not loaded
# Nov 05 17:17:03 | /etc/multipath.conf does not exist, blacklisting all devices.
# Nov 05 17:17:03 | A sample multipath.conf file is located at
# Nov 05 17:17:03 | /usr/share/doc/device-mapper-multipath-0.4.9/multipath.conf
# Nov 05 17:17:03 | You can run /sbin/mpathconf to create or modify /etc/multipath.conf
# Nov 05 17:17:03 | DM multipath kernel driver not loaded
def parse_multipath(info):
# New reported header lines need to be placed here
# the matches need to be put in a list of tupples
# while the structure of the tupple is:
# 0: matching regex
# 1: matched regex-group id of UUID
# 2: matched regex-group id of alias (optional)
reg_headers = [
(get_regex(r"^[0-9a-z]{33}$"), 0, None), # 1. (should be included in 3.)
(get_regex(r"^([^\s]+)\s\(([0-9A-Za-z_-]+)\)"), 2, 1), # 2.
(get_regex(r"^[a-zA-Z0-9_]+$"), 0, None), # 3.
(get_regex(r"^([0-9a-z]{33}|[0-9a-z]{49})\s?dm.+$"), 1, None), # 4.
(get_regex(r"^[a-zA-Z0-9_]+dm-.+$"), 0, None), # 5. Remove this line in 1.2.0
(get_regex(r"^([-a-zA-Z0-9_ ]+)\s?dm-[0-9]+.*$"), 1, None), # 6. and 7.
]
reg_prio = get_regex("[[ ]prio=")
reg_lun = get_regex("[0-9]+:[0-9]+:[0-9]+:[0-9]+")
uuid = None
alias = None
groups = {}
group = {}
numpaths = None
for line in info:
# Ignore error messages due to invalid multipath.conf
if line[0] == "multipath.conf":
continue
# newer agent also output the device mapper table.
# ignore those lines for now.
if line[0] == "dm":
# Reset current device and skip line
uuid = None
continue
# restore original non-split line
l = " ".join(line)
# Skip output when multipath is not present
if l.endswith('kernel driver not loaded') \
or l.endswith('does not exist, blacklisting all devices.') \
or l.endswith('A sample multipath.conf file is located at') \
or l.endswith('multipath.conf'):
uuid = None
continue
# First simply separate between data row and header row
if line[0][0] not in [ '[', '`', '|', '\\' ] and not line[0].startswith("size="):
# Try to match header lines
matchobject = None
for regex, uuid_pos, alias_pos in reg_headers:
matchobject = regex.search(l)
if matchobject:
uuid = matchobject.group(uuid_pos)
if alias_pos:
alias = matchobject.group(alias_pos)
else:
alias = None
break
# No data row and no matching header row
if not matchobject:
raise Exception("Invalid line in agent output: " + l)
# initialize information about next device
numpaths = 0
lun_info = []
paths_info = []
broken_paths = []
group = {}
group['paths'] = paths_info
group['broken_paths'] = broken_paths
group['luns'] = lun_info
group['uuid'] = uuid
group['state'] = None
group['numpaths'] = 0
groups[uuid] = group
# If the device has an alias, then extract it
if alias:
group['alias'] = alias
# Proceed with next line after init
continue
else:
if uuid != None:
# Handle special syntax | |- 2:0:0:1 sda ...
if line[0] == '|':
line = line[1:]
if reg_prio.search(l):
group['state'] = "".join(line[3:])
elif len(line) >= 4 and reg_lun.match(line[1]):
luninfo = "%s(%s)" % (line[1], line[2])
lun_info.append(luninfo)
state = line[4]
if not "active" in state:
broken_paths.append(luninfo)
numpaths += 1
group['numpaths'] = numpaths
paths_info.append(line[2])
return groups
# Get list of UUIDs of all multipath devices
# Length of UUID is 360a9800043346937686f456f59386741
def inventory_multipath(parsed):
settings = host_extra_conf_merged(g_hostname, inventory_multipath_rules)
inventory = []
for uuid, info in parsed.items():
# take current number of paths as target value
if "alias" in info and settings.get("use_alias"):
item = info["alias"]
else:
item = uuid
inventory.append( (item, info['numpaths']) )
return inventory
# item is UUID (e.g. '360a9800043346937686f456f59386741') or alias (e.g. 'mpath0')
def check_multipath(item, target_numpaths, parsed):
if target_numpaths == None:
target_numpaths = 2 # default case: we need two paths
# Keys in parsed are the UUIDs. First assume that we are
# looking for a UUID. Then fall back to aliases
if item in parsed:
mmap = parsed[item]
else:
for mmap in parsed.values():
if mmap.get("alias") == item:
break
else:
return 3, "Multipath device not found in agent output"
# If the item is the alias, then show the UUID in the plugin output.
# If the item is the UUID, then vice versa.
alias = mmap.get('alias')
uuid = mmap.get('uuid')
if item == uuid and alias:
aliasinfo = "(%s) " % alias
elif item == alias and uuid:
aliasinfo = "(%s) " % uuid
else:
aliasinfo = ""
numpaths = mmap['numpaths']
broken = mmap['broken_paths']
numbroken = len(broken)
if numbroken > 0:
return (2, "%sbroken paths: %s" % (aliasinfo, ",".join(broken)))
info = "%spaths expected: %d, paths active: %d" % (aliasinfo, target_numpaths, numpaths)
if numpaths < target_numpaths:
return (2, info)
elif numpaths > target_numpaths:
return (1, info)
else:
return (0, info)
check_info["multipath"] = {
'check_function': check_multipath,
'inventory_function': inventory_multipath,
'parse_function': parse_multipath,
'service_description': 'Multipath %s',
'group': 'multipath',
}
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