Initial commit
This commit is contained in:
Benjamin Renard
commit
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*~
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.*.swp
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Nagios plugin to check cluster synchronization process
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======================================================
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Usage
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-----
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```
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Usage : ./check_sync_cluster [-f files_path_format] [-wcWC]
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-h Show this help message
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-f [files path format] Specify files path template (default : /var/run/sync_cluster)
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-w [minutes] Specify WARNING time in minutes for status file (default : 5)
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-c [minutes] Specify CRITICAL time in minutes for status file (default : 10)
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-W [minutes] Specify WARNING time in minutes for PID file (default : 5)
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-C [minutes] Specify CRITICAL time in minutes for PID file (default : 10)
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```
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Copyright
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---------
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Copyright (c) 2018 Benjamin Renard
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License
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-------
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License version 3
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as published by the Free Software Foundation.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#!/bin/bash
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#
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# Nagios plugin to check cluster synchronization process
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#
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# This check plugin is based on 3 files maintain by synchronization
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# process :
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# - status file : Empty file updated on each successfully execution
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#
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# Default : /var/run/sync_cluster.stat
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#
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# - PID file : Present only when synchronization is running and
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# contain the PID of the running process.
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#
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# Default : /var/run/sync_cluster.pid
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#
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# - Errors file : Present only when error(s) occured in previous
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# synchronizations and contains details on this error(s).
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#
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# Default : /var/run/sync_cluster.err
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#
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# Author : Benjamin Renard <brenard@easter-eggs.com>
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# Date : Thu, 29 Nov 2018 15:41:48 +0100
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# Source : http://gogs.zionetrix.net/check_sync_cluster
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#
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# Default configuration
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# Files path template
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TPL_FILE="/var/run/sync_cluster"
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# WARNING/CRITICAL time in minutes for status file
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WARN_STATUS_FILE=5
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CRIT_STATUS_FILE=10
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# WARNING/CRITICAL time in minutes for PID file
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WARN_PID_FILE=5
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CRIT_PID_FILE=10
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function usage() {
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echo "Usage : $0 [-f files_path_format] [-wcWC]
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-h Show this help message
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-f [files path format] Specify files path template (default : $TPL_FILE)
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-w [minutes] Specify WARNING time in minutes for status file (default : $WARN_STATUS_FILE)
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-c [minutes] Specify CRITICAL time in minutes for status file (default : $CRIT_STATUS_FILE)
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-W [minutes] Specify WARNING time in minutes for PID file (default : $WARN_PID_FILE)
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-C [minutes] Specify CRITICAL time in minutes for PID file (default : $CRIT_PID_FILE)
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"
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}
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while getopts "hf:w:c:W:C:" OPTION
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do
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case "$OPTION" in
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f)
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TPL_FILE="${OPTARG}"
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;;
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w)
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WARN_STATUS_FILE="${OPTARG}"
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;;
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c)
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CRIT_STATUS_FILE="${OPTARG}"
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;;
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W)
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WARN_PID_FILE="${OPTARG}"
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;;
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C)
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CRIT_PID_FILE="${OPTARG}"
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;;
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h)
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usage
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exit 0
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;;
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*)
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echo "Invalid parameter -$OPTION"
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echo
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usage
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exit 1
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;;
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esac
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done
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STAT_FILE="$TPL_FILE.stat"
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ERR_FILE="$TPL_FILE.err"
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PID_FILE="$TPL_FILE.pid"
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#
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# Prepare return
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#
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EXIT_CODE=0
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EXIT_STATUS=OK
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ERROR_MSG=()
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SUCCESS_MSG=()
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function add_error() {
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level="$1"
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if [ $EXIT_CODE -ne 2 ]
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then
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case "$level" in
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CRITICAL)
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EXIT_CODE=2
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EXIT_STATUS=$level
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;;
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WARNING)
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EXIT_CODE=1
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EXIT_STATUS=$level
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;;
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UNKNOWN)
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if [ $EXIT_CODE -ne 1 ]
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then
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EXIT_CODE=3
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EXIT_STATUS=$level
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fi
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;;
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esac
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fi
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ERROR_MSG+=("$2")
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}
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function add_success() {
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SUCCESS_MSG+=("$1")
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}
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function join_by {
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local d=$1; shift; echo -n "$1"; shift; printf "%s" "${@/#/$d}";
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}
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####
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# Check status file
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####
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if [ -r $STAT_FILE ];then
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T=$( ls -al --time-style=+%s $STAT_FILE|awk '{print $6}' )
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CUR=$( date +%s )
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let diff=CUR-T
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let WARN_STATUS_FILE_TIME=WARN_STATUS_FILE*60
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let CRIT_STATUS_FILE_TIME=CRIT_STATUS_FILE*60
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# CRITICAL if diff > $CRIT_STATUS_FILE
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if [ $diff -gt $CRIT_STATUS_FILE_TIME ]
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then
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add_error "CRITICAL" "status file not updated since more than ${CRIT_STATUS_FILE}min"
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# WARNING if diff > $WARN_STATUS_FILE_TIME
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elif [ $diff -gt $WARN_STATUS_FILE_TIME ]
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then
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add_error "WARNING" "status file not updated since more than ${WARN_STATUS_FILE}min"
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else
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add_success "status file updated since less than ${WARN_STATUS_FILE}min"
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fi
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else
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add_error "UNKNOWN" "status file not present"
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fi
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####
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# Check presence of error file
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####
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if [ -e "$ERR_FILE" ]
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then
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add_error "WARNING" "some errors occured syncing cluster"
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else
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add_success 'no error reported'
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fi
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####
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# Check pid file
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####
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if [ -r $PID_FILE ];then
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T=$( ls -al --time-style=+%s $PID_FILE|awk '{print $6}' )
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CUR=$( date +%s )
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let diff=CUR-T
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let WARN_PID_FILE_TIME=WARN_PID_FILE*60
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let CRIT_PID_FILE_TIME=CRIT_PID_FILE*60
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# CRITICAL if diff > $CRIT_PID_FILE
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if [ $diff -gt $CRIT_PID_FILE_TIME ]
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then
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add_error "CRITICAL" "PID file present since more than ${CRIT_PID_FILE}min"
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# WARNING if diff > $WARN_PID_FILE
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elif [ $diff -gt $WARN_PID_FILE_TIME ]
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then
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add_error "WARNING" "PID file present since more than ${WARN_PID_FILE}min"
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else
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add_success "PID file present since less than ${WARN_PID_FILE}min"
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fi
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else
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add_success 'PID file not present'
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fi
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####
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# Display return
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###
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echo "$EXIT_STATUS - $( join_by ', ' "${ERROR_MSG[@]}" "${SUCCESS_MSG[@]}" )"
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echo
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echo -n "Status file : $STAT_FILE"
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if [ -e "$STAT_FILE" ]
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then
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echo " ($( find $STAT_FILE -printf "%AY/%Am/%Ad %AX"|cut -d'.' -f1 ))"
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else
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echo " (not present)"
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fi
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echo -n "Errors file : $ERR_FILE"
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if [ -e "$ERR_FILE" ]
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then
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echo " ($( find $ERR_FILE -printf "%AY/%Am/%Ad %AX"|cut -d'.' -f1 ))"
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echo
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echo "Errors :"
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cat $ERR_FILE|sed 's/^/\t/'
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echo
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echo " => After fixing this problem(s), please remove indicator file : $ERR_FILE"
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echo
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else
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echo " (not present)"
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fi
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echo -n "PID file : $PID_FILE"
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if [ -e "$PID_FILE" ]
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then
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echo " ($( find $PID_FILE -printf "%AY/%Am/%Ad %AX"|cut -d'.' -f1 ))"
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else
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echo " (not present)"
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fi
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exit $EXIT_CODE
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