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Benjamin Renard 2013-12-03 23:44:34 +01:00
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Nagios plugin to check Ceph cluster status
==========================================
This plugin check ceph health, number of OSDs UP, number of MONs UP
and PGs states to determine Ceph cluster status.
Usage
-----
Usage: check_ceph_status [options]
Options:
-h, --help show this help message and exit
-d, --debug
-b BIN, --bin=BIN Ceph binary (default : /usr/bin/ceph)
--conf=CONF Ceph configuration file
-m MON, --mon=MON Ceph monitor address[:port]
-i ID, --id=ID Ceph client id
-k KEYRING, --keyring=KEYRING
Ceph client keyring file
-w WARNLOSTOSD, --warning-lost-osd=WARNLOSTOSD
Warning number of non-up OSDs (default : 1)
-c CRITLOSTOSD, --critical-lost-osd=CRITLOSTOSD
Critical number of non-up OSDs (default : 2)
-W WARNLOSTMON, --warning-lost-mon=WARNLOSTMON
Warning number of non-up MONs (default : 1)
-C CRITLOSTMON, --critical-lost-mon=CRITLOSTMON
Critical number of non-up MONs (default : 2)
Copyright
---------
Copyright (c) 2013 Benjamin Renard <brenard@zionetrix.net>
License
-------
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License version 2
as published by the Free Software Foundation.
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.

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#!/usr/bin/python
#
# Nagios plugin to check Ceph cluster state
#
# This plugin check ceph health, number of OSDs UP, number of MONs UP
# and PGs states to determine Ceph cluster status.
#
# Usage: check_ceph_status [options]
#
# Options:
# -h, --help show this help message and exit
# -d, --debug
# -b BIN, --bin=BIN Ceph binary (default : /usr/bin/ceph)
# --conf=CONF Ceph configuration file
# -m MON, --mon=MON Ceph monitor address[:port]
# -i ID, --id=ID Ceph client id
# -k KEYRING, --keyring=KEYRING
# Ceph client keyring file
# -w WARNLOSTOSD, --warning-lost-osd=WARNLOSTOSD
# Warning number of non-up OSDs (default : 1)
# -c CRITLOSTOSD, --critical-lost-osd=CRITLOSTOSD
# Critical number of non-up OSDs (default : 2)
# -W WARNLOSTMON, --warning-lost-mon=WARNLOSTMON
# Warning number of non-up MONs (default : 1)
# -C CRITLOSTMON, --critical-lost-mon=CRITLOSTMON
# Critical number of non-up MONs (default : 2)
#
# Copyright (c) 2013 Benjamin Renard <brenard@zionetrix.net>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License version 2
# as published by the Free Software Foundation.
#
# 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.
#
import sys,os,json,subprocess,re
from optparse import OptionParser
# default ceph values
CEPH_COMMAND = '/usr/bin/ceph'
WARN_LOST_OSD = 1
CRIT_LOST_OSD = 2
WARN_LOST_MON = 1
CRIT_LOST_MON = 2
# nagios exit code
STATUS = {
'OK': 0,
'WARNING': 1,
'CRITICAL': 2,
'UNKNOWN': 3
}
parser = OptionParser()
parser.add_option('-d',
'--debug',
action="store_true",
dest="debug",
default=False)
parser.add_option('-b',
'--bin',
action="store",
dest="bin",
help="Ceph binary (default : %s)" % CEPH_COMMAND,
type='string',
default=CEPH_COMMAND)
parser.add_option('--conf',
action="store",
dest="conf",
help="Ceph configuration file",
type='string',
default=None)
parser.add_option('-m',
'--mon',
action="store",
dest="mon",
help="Ceph monitor address[:port]",
type='string',
default=None)
parser.add_option('-i',
'--id',
action="store",
dest="id",
help="Ceph client id",
type='string',
default=None)
parser.add_option('-k',
'--keyring',
action="store",
dest="keyring",
help="Ceph client keyring file",
type='string',
default=None)
parser.add_option('-w',
'--warning-lost-osd',
action="store",
dest="warnlostosd",
help="Warning number of non-up OSDs (default : %s)" % WARN_LOST_OSD,
type='int',
default=WARN_LOST_OSD)
parser.add_option('-c',
'--critical-lost-osd',
action="store",
dest="critlostosd",
help="Critical number of non-up OSDs (default : %s)" % CRIT_LOST_OSD,
type='int',
default=CRIT_LOST_OSD)
parser.add_option('-W',
'--warning-lost-mon',
action="store",
dest="warnlostmon",
help="Warning number of non-up MONs (default : %s)" % WARN_LOST_MON,
type='int',
default=WARN_LOST_MON)
parser.add_option('-C',
'--critical-lost-mon',
action="store",
dest="critlostmon",
help="Critical number of non-up MONs (default : %s)" % CRIT_LOST_MON,
type='int',
default=CRIT_LOST_MON)
(options, args) = parser.parse_args()
# validate args
if not os.path.exists(options.bin):
print "ERROR: ceph executable '%s' doesn't exist" % options.bin
sys.exit(STATUS['UNKNOWN'])
if options.conf and not os.path.exists(options.conf):
print "ERROR: ceph conf file '%s' doesn't exist" % options.conf
sys.exit(STATUS['UNKNOWN'])
if options.keyring and not os.path.exists(options.keyring):
print "ERROR: keyring file '%s' doesn't exist" % options.keyring
sys.exit(STATUS['UNKNOWN'])
# build command
ceph_cmd = [options.bin]
if options.mon:
ceph_cmd.append('-m')
ceph_cmd.append(options.mon)
if options.conf:
ceph_cmd.append('-c')
ceph_cmd.append(options.conf)
if options.id:
ceph_cmd.append('--id')
ceph_cmd.append(options.id)
if options.keyring:
ceph_cmd.append('--keyring')
ceph_cmd.append(options.keyring)
ceph_cmd.append('status')
ceph_cmd.append('--format=json')
# exec command
p = subprocess.Popen(ceph_cmd,stdout=subprocess.PIPE,stderr=subprocess.PIPE)
output, err = p.communicate()
if output:
data=json.loads(output)
status='OK'
health=data['health']['overall_status']
if health=='HEALTH_WARN':
status='WARNING'
elif health=='HEALTH_CRIT':
status='CRITICAL'
total_mon=len(data['monmap']['mons'])
total_mon_up=len(data['health']['timechecks']['mons'])
num_lost_mon=total_mon-total_mon_up
if num_lost_mon==0:
monstate="(MONs UP : %s/%s)" % (total_mon_up,total_mon)
else:
monstate="%s MONs down (MONs UP : %s/%s)" % (num_lost_mon,total_mon_up,total_mon)
if num_lost_mon >= options.critlostmon:
status='CRITICAL'
elif num_lost_mon >= options.warnlostmon and status!='CRITICAL':
status='WARNING'
total_osd=data['osdmap']['osdmap']['num_osds']
total_osd_up=data['osdmap']['osdmap']['num_up_osds']
num_lost_osd=total_osd-total_osd_up
if num_lost_osd>=options.critlostosd:
status='CRITICAL'
elif num_lost_osd>=options.warnlostosd and status!='CRITICAL':
status='WARNING'
total_pg=data['pgmap']['num_pgs']
pgstate=""
for st in data['pgmap']['pgs_by_state']:
if re.search('(down|inconsistent|imcomplete|stale)',st['state_name'],re.IGNORECASE):
status='CRITICAL'
pgstate="%s / %s PGs %s" % (pgstate,st['count'],st['state_name'])
elif re.search('(replay|degraded|repair|recovering|backfill)',st['state_name'],re.IGNORECASE):
if status!='CRITICAL':
status="WARNING"
pgstate="%s / %s PGs %s" % (pgstate,st['count'],st['state_name'])
elif st['state_name']=="active+clean":
pgstate="%s / %s/%s PGs active+clean" % (pgstate,st['count'],total_pg)
msg="%s : %s%s %s" % (status,health,pgstate,monstate)
if num_lost_osd==0:
print "%s (OSDs UP : %s/%s)" % (msg,total_osd_up,total_osd)
else:
print "%s / %s OSDs down (OSDs UP : %s/%s)" % (msg,num_lost_osd,total_osd_up,total_osd)
sys.exit(STATUS[status])
else:
print "UNKNOWN : fail to execute ceph status command"
sys.exit(STATUS['UNKNOWN'])