+++ /dev/null
-#! /bin/sh
-
-OS=$(uname)
-
-# MIT License
-#
-# Copyright (c) 2016 Josef Friedrich <josef@friedrich.rocks>
-#
-# Permission is hereby granted, free of charge, to any person obtaining
-# a copy of this software and associated documentation files (the
-# "Software"), to deal in the Software without restriction, including
-# without limitation the rights to use, copy, modify, merge, publish,
-# distribute, sublicense, and/or sell copies of the Software, and to
-# permit persons to whom the Software is furnished to do so, subject to
-# the following conditions:
-#
-# The above copyright notice and this permission notice shall be
-# included in all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
-# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
-# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
-# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-########################################################################
-# Date functions
-########################################################################
-
-# This date function must be placed on the top of this file because
-# they are used in some global variables.
-
-# to_year ###
-
-##
-# Get the four digit year integer from now.
-#
-# Return:
-# The current 4 digit year.
-##
-_now_to_year() {
- date +%Y
-}
-
-##
-# Convert a date in the format YYYY-MM-DD to a four digit year integer.
-#
-# Parameters:
-# a date in the format YYYY-MM-DD
-#
-# Return:
-# four digit year integer
-##
-_date_to_year() {
- local OPTIONS
- if [ "$OS" = 'Linux' ]; then
- OPTIONS="--date $1"
- # FreeBSD, Darwin
- else
- OPTIONS="-j -f %Y-%m-%d $1"
- fi
- date $OPTIONS +%Y
-}
-
-# to_datetime ###
-
-##
-# Convert a UNIX timestamp to a datetime string.
-#
-# Parameters:
-# UNIX timestamp
-#
-# Return:
-# %Y-%m-%d.%H:%M:%S
-##
-_timestamp_to_datetime() {
- local OPTIONS
- if [ "$OS" = 'Linux' ]; then
- OPTIONS="--date @$1"
- # FreeBSD, Darwin
- else
- OPTIONS="-j -f %s $1"
- fi
- date $OPTIONS +%Y-%m-%d.%H:%M:%S
-}
-
-# to_timestamp ###
-
-##
-# Get the current UNIX timestamp.
-#
-# Return:
-# %current UNIX timestamp
-##
-_now_to_timestamp() {
- date +%s
-}
-
-PROJECT_PAGES='https://github.com/Josef-Friedrich/check_zfs_snapshot
-https://exchange.icinga.com/joseffriedrich/check_zfs_snapshot
-https://exchange.nagios.org/directory/Plugins/System-Metrics/File-System/check_zfs_snapshot/details'
-
-VERSION=1.2
-FIRST_RELEASE=2016-09-08
-SHORT_DESCRIPTION="Monitoring plugin to check how long ago the last \
-snapshot of a ZFS dataset was created."
-USAGE="check_zfs_snapshot v$VERSION
-Copyright (c) $(_date_to_year $FIRST_RELEASE)-$(_now_to_year) \
-Josef Friedrich <josef@friedrich.rocks>
-
-$SHORT_DESCRIPTION
-
-
-Usage: check_zfs_snapshot <options>
-
-Options:
- -c, --critical=OPT_CRITICAL
- Interval in seconds for critical state.
- -d, --dataset=OPT_DATASET
- The ZFS dataset to check.
- -h, --help
- Show this help.
- -s, --short-description
- Show a short description of the command.
- -v, --version
- Show the version number.
- -w, --warning=OPT_WARNING
- Interval in seconds for warning state. Must be lower than -c
-
-Performance data:
- - last_ago
- Time interval in seconds for last snapshot.
- - warning
- Interval in seconds.
- - critical
- Interval in seconds.
- - snapshot_count
- How many snapshot exists in the given dataset and all child
- datasets exists.
-"
-
-# Exit codes
-STATE_OK=0
-STATE_WARNING=1
-STATE_CRITICAL=2
-STATE_UNKNOWN=3
-
-_get_last_snapshot() {
- zfs get creation -Hpr -t snapshot "$1" | \
- awk 'BEGIN {max = 0} {if ($3>max) max=$3} END {print max}'
-}
-
-_getopts() {
- while getopts ':c:d:hsvw:-:' OPT ; do
- case $OPT in
-
- c)
- OPT_CRITICAL=$OPTARG
- ;;
-
- d)
- OPT_DATASET="$OPTARG"
- ;;
-
- h)
- echo "$USAGE"
- exit 0
- ;;
-
- s)
- echo "$SHORT_DESCRIPTION"
- exit 0
- ;;
-
- v)
- echo "$VERSION"
- exit 0
- ;;
-
- w)
- OPT_WARNING=$OPTARG
- ;;
-
- \?)
- echo "Invalid option “-$OPTARG”!" >&2
- exit 2
- ;;
-
- :)
- echo "Option “-$OPTARG” requires an argument!" >&2
- exit 3
- ;;
-
- -)
- LONG_OPTARG="${OPTARG#*=}"
-
- case $OPTARG in
-
- critical=?*)
- OPT_CRITICAL=$LONG_OPTARG
- ;;
-
- dataset=?*)
- OPT_DATASET="$LONG_OPTARG"
- ;;
-
- help)
- echo "$USAGE"
- exit 0
- ;;
-
- short-description)
- echo "$SHORT_DESCRIPTION"
- exit 0
- ;;
-
- version)
- echo "$VERSION"
- exit 0
- ;;
-
- warning=?*)
- OPT_WARNING=$LONG_OPTARG
- ;;
-
- critical*|dataset*|warning*)
- echo "Option “--$OPTARG” requires an argument!" >&2
- exit 3
- ;;
-
- help*|short-description*|version*)
- echo "No argument allowed for the option “--$OPTARG”!" >&2
- exit 4
- ;;
-
- '') # "--" terminates argument processing
- break
- ;;
-
- *)
- echo "Invalid option “--$OPTARG”!" >&2
- exit 2
- ;;
-
- esac
- ;;
-
- esac
- done
-}
-
-_snapshot_count() {
- # FreeBSD wc adds some whitespaces before the number!
- # cat $HOME/debug | wc -l
- # 7
- local COUNT
- COUNT="$(zfs list -t snapshot | grep "$1" | wc -l)"
- echo $COUNT
-}
-
-_performance_data() {
- echo "| \
-last_ago=${DIFF}s;$OPT_WARNING;$OPT_CRITICAL;0 \
-count=$(_snapshot_count "$OPT_DATASET");;;0\
-"
-}
-
-## This SEPARATOR is required for test purposes. Please don’t remove! ##
-
-_getopts $@
-
-if [ -z "$OPT_WARNING" ]; then
- # 1 day
- OPT_WARNING=86400
-fi
-
-if [ -z "$OPT_CRITICAL" ]; then
- # 3 day
- OPT_CRITICAL=259200
-fi
-
-if [ -z "$OPT_DATASET" ]; then
- echo "Dataset has to be set! Use option -d <dataset>" >&2
- echo "$USAGE" >&2
- exit $STATE_UNKNOWN
-fi
-
-if ! zfs list "$OPT_DATASET" > /dev/null 2>&1; then
- echo "'$OPT_DATASET' is no ZFS dataset!" >&2
- echo "$USAGE" >&2
- exit $STATE_UNKNOWN
-fi
-
-NOW=$(_now_to_timestamp)
-
-CREATION_DATE=$(_get_last_snapshot "$OPT_DATASET")
-
-DIFF=$((NOW - CREATION_DATE))
-
-if [ "$OPT_WARNING" -gt "$OPT_CRITICAL" ]; then
- echo '-w OPT_WARNING must be smaller than -c OPT_CRITICAL'
- _usage >&2
- exit $STATE_UNKNOWN
-fi
-
-RETURN=STATE_UNKNOWN
-
-if [ "$DIFF" -gt "$OPT_CRITICAL" ]; then
- RETURN=$STATE_CRITICAL
- MESSAGE="CRITICAL:"
-elif [ "$DIFF" -gt "$OPT_WARNING" ]; then
- RETURN=$STATE_WARNING
- MESSAGE="WARNING:"
-else
- RETURN=$STATE_OK
- MESSAGE="OK:"
-fi
-
-DATE="$(_timestamp_to_datetime "$CREATION_DATE")"
-
-echo "$MESSAGE Last snapshot for dataset '$OPT_DATASET' was created on $DATE $(_performance_data)"
-
-exit $RETURN
projects / perso / Immae / Config / Nix.git / blobdiff