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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
import capacity
from glusternagios import utils
from glusternagios import glustercli
def showVolumeUtilization(vname, warnLevel, critLevel):
buf = {}
try:
buf = capacity.statvfs(vname, "localhost")
except Exception:
sys.stdout.write("UNKNOWN: Failed to get the "
"Volume Utilization Data\n")
sys.exit(utils.PluginStatusCode.UNKNOWN)
####################################################################
# statvfs.frsize * statvfs.f_blocks# Size of filesystem in bytes #
# statvfs.frsize * statvfs.f_bfree # Actual number of free bytes #
# statvfs.frsize * statvfs.f_bavail# Number of free bytes that #
# ordinary users are allowed to use (excl. reserved space #
####################################################################
# total size in KB
total_size = (buf['f_bsize'] * buf['f_blocks']) / 1024.0
# Available free size in KB
free_size = (buf['f_bsize'] * buf['f_bavail']) / 1024.0
# used size in KB
used_size = total_size - ((buf['f_bsize'] * buf['f_bfree']) / 1024.0)
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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