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#
# Monitor diskspace via SNMP
# (based on process.monitor by Brian Moore)
#
# Originally written by SATOH Fumiyasu <fumiya@samba.gr.jp>.
# Modified Oct 2001 by Dan Urist <durist@world.std.com>
# Changes: added usage, SNMP v.3 support, -T threshold option and
# unique-ified errors
#
# Usage:
# [-h] # Usage
# [-t Timeout] # Timeout in ms (default: 1000000)
# [-r Retries] # Retries before failure (default: 5)
# [-v SNMPversion] # 1,2,2c or 3 (default: 1)
# [-c Community] # For SNMP v.1,2,2c (default: public)
# [-u snmpuser] # For SNMP v.3 (default: initial)
# [-l seclevel] # For SNMP v.3 (default: noAuthNoPriv)
# [-A authpassphrase] # For SNMP v.3
# [-T threshold] # If a disk threshold is given, the script
# # will exit with the value of the highest
# # disk percentage found that is over the
# # threshold; if no disks are over the threshold
# # it will exit with value 0, and it will exit
# # with value 2 for SNMP error
# host [host ...]
#
#
# This script will exit with value 1 if host:community has dskErrorFlag
# set. The summary output line will be the host names that failed
# and the disk information. The detail lines are what UCD snmp returns
# for an dskErrMessage. ('/filesystem: less than WATERMARK free (= CURRENT)').
# If there is an SNMP error (either a problem with the SNMP libraries,
# or a problem communicating via SNMP with the destination host),
# this script will exit with a warning value of 2.
#
# If the -T threshold option is used, the script will exit with the
# highest disk percentage found that is over the threshold. The intent
# is to allow use with mon's "alert exit=value" parameter to allow for
# finer-grained alerts based on disk usage. If no disks are over the
# threshold, the script will exit with value 0; if an SNMP error
# occurs (and there are no other errors), the script will exit with
# value 2.
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