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#!/usr/bin/python
# Copyright (C) 2015 Red Hat Inc
#
# 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
#
import os
import sys
import argparse
import logging
from glusternagios import utils
from glusternagios.utils import PluginStatusCode, PluginStatus
ONE_GB_BYTES = 1073741824.0
def _getMountPoint(path):
mount = os.path.realpath(path)
while not os.path.ismount(mount):
mount = os.path.dirname(mount)
return mount
def _parseProcMounts(filter=True):
mountPoints = {}
with open('/proc/mounts', 'r') as f:
for line in f:
if line.startswith("/") or not filter:
mount = {}
tokens = line.split()
mount['device'] = tokens[0]
mount['fsType'] = tokens[2]
mount['mountOptions'] = tokens[3]
mountPoints[tokens[1]] = mount
return mountPoints
def _getStats(mountPoint):
data = os.statvfs(mountPoint)
total = (data.f_blocks * data.f_bsize) / ONE_GB_BYTES
free = (data.f_bfree * data.f_bsize) / ONE_GB_BYTES
used_percent = 100 - (100.0 * free / total)
total_inode = data.f_files
free_inode = data.f_ffree
used_percent_inode = 100 - (100.0 * free_inode / total_inode)
used = total - free
used_inode = total_inode - free_inode
return {'total': total,
'free': free,
'used_percent': used_percent,
'total_inode': total_inode,
'free_inode': free_inode,
'used_inode': used_inode,
'used': used,
'used_percent_inode': used_percent_inode}
def _getOutputText(detail):
template = "{mount_point} - {{space - free: {free:0.3f} GiB, " \
"used: {used_percent:0.3f}%}}, {{inode - free: {free_inode}" \
" , used: {used_percent_inode:0.3f}%}}"
if detail['thinpool_size']:
template += ", {{thinpool-data - free: {thinpool_free:.3f} GiB," \
" used: {thinpool_used_percent:.3f}%}}, " \
"{{thinpool-metadata - free: {metadata_free:.3f} GiB," \
" used: {metadata_used_percent:.3f}%}}"
return template.format(**detail)
def _getPerfdata(detail, warn, crit):
template = "{mount_point}={used_percent:.3f}%;{warn};{crit};0;{total:.3f}"\
" {mount_point}.inode={used_percent_inode:.3f}%;{warn};{crit}" \
";0;{total_inode}"
if detail['thinpool_size']:
template += " {mount_point}.thinpool={thinpool_used_percent:.3f}%;" \
"{warn};{crit};0;{thinpool_size:.3f} {mount_point}." \
"thinpool-metadata={metadata_used_percent:.3f}" \
"%;{warn};{crit};0;{metadata_size:.3f}"
return template.format(warn=warn, crit=crit, **detail)
def _getStatusInfo(detail, warn, crit):
rc = PluginStatus.OK
msg = []
parameter = {'metadata_used_percent': ['thinpool-metadata',
'metadata_used',
'metadata_size', ' GiB'],
'thinpool_used_percent': ['thinpool-data', 'thinpool_used',
'thinpool_size', ' GiB'],
'used_percent': ['space', 'used',
'total', ' GiB'],
'used_percent_inode': ['inode', 'used_inode',
'total_inode', '']}
for k, v in parameter.iteritems():
if not detail[k]:
continue
if k == 'used_percent_inode':
m = "%s used %d / %d%s" % (v[0], detail[v[1]],
detail[v[2]], v[3])
else:
m = "%s used %0.3f / %0.3f%s" % (v[0], detail[v[1]],
detail[v[2]], v[3])
if detail[k] >= crit:
rc = PluginStatus.CRITICAL
msg.append(m)
elif detail[k] >= warn:
if rc != PluginStatus.CRITICAL:
rc = PluginStatus.WARNING
msg.append(m)
if rc == PluginStatus.OK:
out = ''
else:
out = "mount point {mount_point} {{{msg}}}".format(msg=", ".join(msg),
**detail)
return rc, out
def parse_input():
parser = argparse.ArgumentParser()
parser.add_argument("-w", "--warning", action="store",
required=True, type=int,
help="Warning threshold in percentage")
parser.add_argument("-c", "--critical", action="store",
required=True, type=int,
help="Critical threshold in percentage")
group = parser.add_mutually_exclusive_group()
group.add_argument("-e", "--exclude", action="append", default=[],
help="exclude given interface")
group.add_argument("-i", "--include", action="append", default=[],
help="add given interface for monitoring")
args = parser.parse_args()
return args
def getLvs():
lvmCommand = ["lvm", "vgs", "--unquoted", "--noheading",
"--nameprefixes", "--separator", "$",
"--nosuffix", "--units", "m", "-o",
"lv_uuid,lv_name,data_percent,pool_lv,lv_attr,"
"lv_size,lv_path,lv_metadata_size,"
"metadata_percent,vg_name"]
rc, out, err = utils.execCmd(lvmCommand)
if rc != 0:
logging.error(
"lvm command failed.\nCommand=%s\nrc=%s\nout=%s\nerr=%s"
% (lvmCommand, rc, out, err)
)
return None
l = map(lambda x: dict(x),
map(lambda x: [e.split('=') for e in x],
map(lambda x: x.strip().split('$'), out)))
d = {}
for i in l:
if i['LVM2_LV_ATTR'][0] == 't':
k = "%s/%s" % (i['LVM2_VG_NAME'], i['LVM2_LV_NAME'])
else:
k = os.path.realpath(i['LVM2_LV_PATH'])
d.update({k: i})
return d
def getMountStats(exclude, include):
def _getMounts(exclude=[], include=[]):
excludeList = map(_getMountPoint, exclude)
includeList = map(_getMountPoint, include)
mountPoints = _parseProcMounts()
if excludeList:
outList = set(mountPoints) - set(excludeList)
elif includeList:
outList = set(mountPoints).intersection(set(includeList))
else:
return mountPoints
# list comprehension to build dictionary does not work in python 2.6.6
mounts = {}
for k in outList:
mounts[k] = mountPoints[k]
return mounts
def _getThinPoolStat(device):
out = {'thinpool_size': None,
'thinpool_used_percent': None,
'metadata_size': None,
'metadata_used_percent': None,
'thinpool_free': None,
'metadata_free': None,
'thinpool_used': None,
'metadata_used': None}
if lvs and device in lvs and \
lvs[device]['LVM2_LV_ATTR'][0] == 'V':
thinpool = "%s/%s" % (lvs[device]['LVM2_VG_NAME'],
lvs[device]['LVM2_POOL_LV'])
out['thinpool_size'] = float(
lvs[thinpool]['LVM2_LV_SIZE']) / 1024
out['thinpool_used_percent'] = float(
lvs[thinpool]['LVM2_DATA_PERCENT'])
out['metadata_size'] = float(
lvs[thinpool]['LVM2_LV_METADATA_SIZE']) / 1024
out['metadata_used_percent'] = float(
lvs[thinpool]['LVM2_METADATA_PERCENT'])
out['thinpool_free'] = out['thinpool_size'] * (
1 - out['thinpool_used_percent'] / 100.0)
out['thinpool_used'] = out['thinpool_size'] - out['thinpool_free']
out['metadata_free'] = out['metadata_size'] * (
1 - out['metadata_used_percent'] / 100.0)
out['metadata_used'] = out['metadata_size'] - out['metadata_free']
return out
mountPoints = _getMounts(exclude, include)
lvs = getLvs()
mountDetail = {}
for mount, info in mountPoints.iteritems():
mountDetail[mount] = _getStats(mount)
mountDetail[mount].update(
_getThinPoolStat(os.path.realpath(info['device']))
)
mountDetail[mount].update({'mount_point': mount})
return mountDetail
def getPrintableStatus(mountDetail, warning, critical):
finalRc = utils.PluginStatus.OK
finalMsg = []
finalOut = []
finalPerfdata = []
for mount, detail in mountDetail.iteritems():
finalOut.append(_getOutputText(detail))
finalPerfdata.append(_getPerfdata(detail, warning, critical))
rc, msg = _getStatusInfo(detail, warning, critical)
if msg:
finalMsg.append(msg)
if getattr(PluginStatusCode, rc) > getattr(PluginStatusCode, finalRc):
finalRc = rc
return finalRc, finalMsg, finalOut, finalPerfdata
if __name__ == '__main__':
args = parse_input()
mountDetail = getMountStats(args.exclude, args.include)
rc, msg, msgDet, perfdata = getPrintableStatus(mountDetail,
args.warning,
args.critical)
print "%s: %s" % (rc, ", ".join(msg))
print "%s | %s" % ("\n".join(msgDet), "\n".join(perfdata))
sys.exit(getattr(PluginStatusCode, rc))
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