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#!/usr/bin/python
# check_vol_utilization.py -- nagios plugin uses libgfapi output for perf data
# Copyright (C) 2014 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 sys
import argparse
from glusternagios import utils
from glusternagios import glustercli
import gfapi
BYTES_IN_KB = 1024
def computeVolumeStats(data):
total = data.f_blocks * data.f_bsize
free = data.f_bfree * data.f_bsize
used = total - free
return {'sizeTotal': float(total),
'sizeFree': float(free),
'sizeUsed': float(used)}
def showVolumeUtilization(vname, warnLevel, critLevel):
try:
data = gfapi.getVolumeStatvfs(vname)
except gfapi.GlusterLibgfapiException:
sys.stdout.write("CRITICAL: Failed to get the "
"Volume Utilization Data\n")
sys.exit(utils.PluginStatusCode.CRITICAL)
volumeCapacity = computeVolumeStats(data)
#total size in KB
total_size = volumeCapacity['sizeTotal'] / BYTES_IN_KB
#Available free size in KB
free_size = volumeCapacity['sizeFree'] / BYTES_IN_KB
#used size in KB
used_size = volumeCapacity['sizeUsed'] / BYTES_IN_KB
vol_utilization = (used_size / total_size) * 100
perfLines = []
perfLines.append(("utilization=%.2f%%;%d;%d total=%0.2f "
"used=%0.2f free=%0.2f" % (vol_utilization, warnLevel,
critLevel, total_size,
used_size, free_size)))
if int(vol_utilization) > critLevel:
sys.stdout.write(
("CRITICAL: Utilization:%0.2f%%"
"| %s\n" % (vol_utilization, " ".join(perfLines))))
sys.exit(utils.PluginStatusCode.CRITICAL)
elif int(vol_utilization) > warnLevel:
sys.stdout.write(
("WARNING: Utilization:%0.2f%%"
"| %s\n" % (vol_utilization, " ".join(perfLines))))
sys.exit(utils.PluginStatusCode.WARNING)
else:
sys.stdout.write(
("OK: Utilization:%0.2f%%"
"| %s\n" % (vol_utilization, " ".join(perfLines))))
sys.exit(utils.PluginStatusCode.OK)
def check_volume_status(volume):
try:
volumes = glustercli.volumeInfo(volume)
if volumes.get(volume) is None:
sys.stdout.write("CRITICAL: Volume not found\n")
sys.exit(utils.PluginStatusCode.CRITICAL)
elif volumes[volume]["volumeStatus"] == \
glustercli.VolumeStatus.OFFLINE:
sys.stdout.write("CRITICAL: Volume is stopped\n")
sys.exit(utils.PluginStatusCode.CRITICAL)
except glustercli.GlusterCmdFailedException:
sys.stdout.write("UNKNOWN: Failed to get the "
"Volume Utilization Data\n")
sys.exit(utils.PluginStatusCode.UNKNOWN)
def parse_input():
parser = argparse.ArgumentParser(
usage='%(prog)s [-h] <volume> -w <Warning> -c <Critical>')
parser.add_argument("volume",
help="Name of the volume to get the Utilization")
parser.add_argument("-w",
"--warning",
action="store",
type=int,
help="Warning Threshold in percentage")
parser.add_argument("-c",
"--critical",
action="store",
type=int,
help="Critical Threshold in percentage")
args = parser.parse_args()
if not args.critical or not args.warning:
print "UNKNOWN:Missing critical/warning threshold value."
sys.exit(3)
if args.critical <= args.warning:
print "UNKNOWN:Critical must be greater than Warning."
sys.exit(3)
return args
if __name__ == '__main__':
args = parse_input()
# check the volume status before getting the volume utilization
check_volume_status(args.volume)
showVolumeUtilization(args.volume, args.warning, args.critical)
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