Initial commit

.gitignore

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+*~
+.*.swp

README.md

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+Nagios plugin to check cluster synchronization process
+======================================================
+
+Usage
+-----
+
+```
+Usage : ./check_sync_cluster [-f files_path_format] [-wcWC]
+	-h			Show this help message
+	-f [files path format]	Specify files path template (default : /var/run/sync_cluster)
+	-w [minutes]		Specify WARNING time in minutes for status file (default : 5)
+	-c [minutes]		Specify CRITICAL time in minutes for status file (default : 10)
+	-W [minutes]		Specify WARNING time in minutes for PID file (default : 5)
+	-C [minutes]		Specify CRITICAL time in minutes for PID file (default : 10)
+```
+
+Copyright
+---------
+
+Copyright (c) 2018 Benjamin Renard
+
+License
+-------
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License version 3
+as published by the Free Software Foundation.
+
+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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

check_sync_cluster

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+#!/bin/bash
+#
+# Nagios plugin to check cluster synchronization process
+#
+# This check plugin is based on 3 files maintain by synchronization
+# process :
+#  - status file : Empty file updated on each successfully execution
+#
+#       Default : /var/run/sync_cluster.stat
+#
+#  - PID file : Present only when synchronization is running and 
+#               contain the PID of the running process.
+#
+#       Default : /var/run/sync_cluster.pid
+#
+#  - Errors file : Present only when error(s) occured in previous
+#                  synchronizations and contains details on this error(s).
+#
+#       Default : /var/run/sync_cluster.err
+#
+# Author : Benjamin Renard <brenard@easter-eggs.com>
+# Date : Thu, 29 Nov 2018 15:41:48 +0100
+# Source : http://gogs.zionetrix.net/check_sync_cluster
+#
+
+# Default configuration
+
+# Files path template
+TPL_FILE="/var/run/sync_cluster"
+
+# WARNING/CRITICAL time in minutes for status file
+WARN_STATUS_FILE=5
+CRIT_STATUS_FILE=10
+
+# WARNING/CRITICAL time in minutes for PID file
+WARN_PID_FILE=5
+CRIT_PID_FILE=10
+
+
+function usage() {
+	echo "Usage : $0 [-f files_path_format] [-wcWC]
+	-h			Show this help message
+	-f [files path format]	Specify files path template (default : $TPL_FILE)
+	-w [minutes]		Specify WARNING time in minutes for status file (default : $WARN_STATUS_FILE)
+	-c [minutes]		Specify CRITICAL time in minutes for status file (default : $CRIT_STATUS_FILE)
+	-W [minutes]		Specify WARNING time in minutes for PID file (default : $WARN_PID_FILE)
+	-C [minutes]		Specify CRITICAL time in minutes for PID file (default : $CRIT_PID_FILE)
+"
+}
+
+while getopts "hf:w:c:W:C:" OPTION
+do
+	case "$OPTION" in
+		f)
+			TPL_FILE="${OPTARG}"
+		;;
+		w)
+			WARN_STATUS_FILE="${OPTARG}"
+		;;
+		c)
+			CRIT_STATUS_FILE="${OPTARG}"
+		;;
+		W)
+			WARN_PID_FILE="${OPTARG}"
+		;;
+		C)
+			CRIT_PID_FILE="${OPTARG}"
+		;;
+		h)
+			usage
+			exit 0
+		;;
+		*)
+			echo "Invalid parameter -$OPTION"
+			echo
+			usage
+			exit 1
+		;;
+	esac
+done
+
+STAT_FILE="$TPL_FILE.stat"
+ERR_FILE="$TPL_FILE.err"
+PID_FILE="$TPL_FILE.pid"
+
+#
+# Prepare return
+#
+
+EXIT_CODE=0
+EXIT_STATUS=OK
+
+ERROR_MSG=()
+SUCCESS_MSG=()
+
+function add_error() {
+	level="$1"
+	if [ $EXIT_CODE -ne 2 ]
+	then
+		case "$level" in
+			CRITICAL)
+				EXIT_CODE=2
+				EXIT_STATUS=$level
+				;;
+			WARNING)
+				EXIT_CODE=1
+				EXIT_STATUS=$level
+				;;
+			UNKNOWN)
+				if [ $EXIT_CODE -ne 1 ]
+				then
+					EXIT_CODE=3
+					EXIT_STATUS=$level
+				fi
+				;;
+		esac
+	fi
+	ERROR_MSG+=("$2")
+}
+
+function add_success() {
+	SUCCESS_MSG+=("$1")
+}
+
+function join_by {
+	local d=$1; shift; echo -n "$1"; shift; printf "%s" "${@/#/$d}";
+}
+
+####
+# Check status file
+####
+if [ -r $STAT_FILE ];then
+
+	T=$( ls -al --time-style=+%s $STAT_FILE|awk '{print $6}' )
+	CUR=$( date +%s )
+	let diff=CUR-T
+
+	let WARN_STATUS_FILE_TIME=WARN_STATUS_FILE*60
+	let CRIT_STATUS_FILE_TIME=CRIT_STATUS_FILE*60
+
+	# CRITICAL if diff > $CRIT_STATUS_FILE
+	if [ $diff -gt $CRIT_STATUS_FILE_TIME ]
+	then
+		add_error "CRITICAL" "status file not updated since more than ${CRIT_STATUS_FILE}min"
+	# WARNING if diff > $WARN_STATUS_FILE_TIME
+	elif [ $diff -gt $WARN_STATUS_FILE_TIME ]
+	then
+		add_error "WARNING" "status file not updated since more than ${WARN_STATUS_FILE}min"
+	else
+		add_success "status file updated since less than ${WARN_STATUS_FILE}min"
+	fi
+else
+	add_error "UNKNOWN" "status file not present"
+fi
+
+
+
+
+####
+# Check presence of error file
+####
+if [ -e "$ERR_FILE" ]
+then
+	add_error "WARNING" "some errors occured syncing cluster"
+else
+	add_success 'no error reported'	
+fi
+
+####
+# Check pid file
+####
+if [ -r $PID_FILE ];then
+
+	T=$( ls -al --time-style=+%s $PID_FILE|awk '{print $6}' )
+	CUR=$( date +%s )
+	let diff=CUR-T
+
+	let WARN_PID_FILE_TIME=WARN_PID_FILE*60
+	let CRIT_PID_FILE_TIME=CRIT_PID_FILE*60
+
+	# CRITICAL if diff > $CRIT_PID_FILE
+	if [ $diff -gt $CRIT_PID_FILE_TIME ]
+	then
+		add_error "CRITICAL" "PID file present since more than ${CRIT_PID_FILE}min"
+	# WARNING if diff > $WARN_PID_FILE
+	elif [ $diff -gt $WARN_PID_FILE_TIME ]
+	then
+		add_error "WARNING" "PID file present since more than ${WARN_PID_FILE}min"
+	else
+		add_success "PID file present since less than ${WARN_PID_FILE}min"
+	fi
+else
+	add_success 'PID file not present'
+fi
+
+
+####
+# Display return
+###
+echo "$EXIT_STATUS - $( join_by ', ' "${ERROR_MSG[@]}" "${SUCCESS_MSG[@]}" )"
+echo
+
+echo -n "Status file : $STAT_FILE"
+if [ -e "$STAT_FILE" ]
+then
+	echo " ($( find $STAT_FILE -printf "%AY/%Am/%Ad %AX"|cut -d'.' -f1 ))"
+else
+	echo " (not present)"
+fi
+
+echo -n "Errors file : $ERR_FILE"
+if [ -e "$ERR_FILE" ]
+then
+	echo " ($( find $ERR_FILE -printf "%AY/%Am/%Ad %AX"|cut -d'.' -f1 ))"
+	echo
+	echo "Errors :"
+	cat $ERR_FILE|sed 's/^/\t/'
+	echo
+	echo " => After fixing this problem(s), please remove indicator file : $ERR_FILE"
+	echo
+else
+	echo " (not present)"
+fi
+
+echo -n "PID file : $PID_FILE"
+if [ -e "$PID_FILE" ]
+then
+	echo " ($( find $PID_FILE -printf "%AY/%Am/%Ad %AX"|cut -d'.' -f1 ))"
+else
+	echo " (not present)"
+fi
+
+exit $EXIT_CODE
+