#!/bin/bash
#=====================================================================
# Set the following variables to your system needs
# (Detailed instructions below variables)
#=====================================================================
#
# Username to access the MySQL server e.g. dbuser
USERNAME=ROOT
#
# Username to access the MySQL server e.g. password
PASSWORD=PASSWORD
#
# Host name (or IP address) of MySQL server e.g localhost
DBHOST=localhost
#
# List of DBNAMES for Daily/Weekly Backup e.g. "DB1 DB2 DB3"
DBNAMES="all"
#
# Backup directory location e.g /backups
BACKUPDIR="/home/sql_backups"
#
# Mail setup
# What would you like to be mailed to you?
# - log   : send only log file
# - files : send log file and sql files as attachments (see docs)
# - stdout : will simply output the log to the screen if run manually.
# - quiet : Only send logs if an error occurs to the MAILADDR.
MAILCONTENT="log"
#
# Set the maximum allowed email size in k. (4000 = approx 5MB email [see docs])
MAXATTSIZE="4000"
#
# Email Address to send mail to? (user@domain.com)
MAILADDR="YOU@YOU.COM"
#
#
# ============================================================
# === ADVANCED OPTIONS ( Read the doc's below for details )===
#=============================================================
#
# List of DBBNAMES for Monthly Backups.
MDBNAMES="mysql $DBNAMES"
#
# List of DBNAMES to EXLUCDE if DBNAMES are set to all (must be in " quotes)
DBEXCLUDE="cphulkd eximstats horde information_schema leechprotect modsec mysql roundcube rvadmin_news"
#
# Include CREATE DATABASE in backup?
CREATE_DATABASE=yes
#
# Separate backup directory and file for each DB? (yes or no)
SEPDIR=yes
#
# Which day do you want weekly backups? (1 to 7 where 1 is Monday)
DOWEEKLY=6
#
# Choose Compression type. (gzip or bzip2)
COMP=gzip
#
# Compress communications between backup server and MySQL server?
COMMCOMP=no
#
# Additionally keep a copy of the most recent backup in a seperate directory.
LATEST=yes
#
#  The maximum size of the buffer for client/server communication. e.g. 16MB (maximum is 1GB)
MAX_ALLOWED_PACKET=16MB
#
#  For connections to localhost. Sometimes the Unix socket file must be specified.
SOCKET=
#
# Command to run before backups (uncomment to use)
#PREBACKUP="/etc/mysql-backup-pre"
#
# Command run after backups (uncomment to use)
#POSTBACKUP="/etc/mysql-backup-post"
#
echo "Repairing and Optimising Databases before dumping"
mysqlcheck -Aors -u root -pPASSWORD
echo "Repair and optimise completed, errors reported above"
#=====================================================================
#
# Should not need to be modified from here down!!
#
#=====================================================================
#=====================================================================
#=====================================================================
PATH=/usr/local/bin:/usr/bin:/bin:/usr/local/mysql/bin
DATE=`date +%Y-%m-%d_%Hh%Mm`				# Datestamp e.g 2002-09-21
DOW=`date +%A`							# Day of the week e.g. Monday
DNOW=`date +%u`						# Day number of the week 1 to 7 where 1 represents Monday
DOM=`date +%d`							# Date of the Month e.g. 27
M=`date +%B`							# Month e.g January
W=`date +%V`							# Week Number e.g 37
VER=2.5									# Version Number
LOGFILE=$BACKUPDIR/$DBHOST-`date +%N`.log		# Logfile Name
LOGERR=$BACKUPDIR/ERRORS_$DBHOST-`date +%N`.log		# Logfile Name
BACKUPFILES=""
OPT="--quote-names --opt"			# OPT string for use with mysqldump ( see man mysqldump )
#
# Add --compress mysqldump option to $OPT
if [ "$COMMCOMP" = "yes" ];
	then
		OPT="$OPT --compress"
	fi
#
# Add --compress mysqldump option to $OPT
if [ "$MAX_ALLOWED_PACKET" ];
	then
		OPT="$OPT --max_allowed_packet=$MAX_ALLOWED_PACKET"
	fi
#
# Create required directories
if [ ! -e "$BACKUPDIR" ]		# Check Backup Directory exists.
	then
	mkdir -p "$BACKUPDIR"
fi
#
if [ ! -e "$BACKUPDIR/daily" ]		# Check Daily Directory exists.
	then
	mkdir -p "$BACKUPDIR/daily"
fi
#
if [ ! -e "$BACKUPDIR/weekly" ]		# Check Weekly Directory exists.
	then
	mkdir -p "$BACKUPDIR/weekly"
fi
#
if [ ! -e "$BACKUPDIR/monthly" ]	# Check Monthly Directory exists.
	then
	mkdir -p "$BACKUPDIR/monthly"
fi
#
if [ "$LATEST" = "yes" ]
then
	if [ ! -e "$BACKUPDIR/latest" ]	# Check Latest Directory exists.
	then
		mkdir -p "$BACKUPDIR/latest"
	fi
eval rm -fv "$BACKUPDIR/latest/*"
fi
#
# IO redirection for logging.
touch $LOGFILE
exec 6>&1           # Link file descriptor #6 with stdout.
                    # Saves stdout.
exec > $LOGFILE     # stdout replaced with file $LOGFILE.
touch $LOGERR
exec 7>&2           # Link file descriptor #7 with stderr.
                    # Saves stderr.
exec 2> $LOGERR     # stderr replaced with file $LOGERR.
#
#
# Functions
#
# Database dump function
dbdump () {
mysqldump --user=$USERNAME --password=$PASSWORD --host=$DBHOST $OPT $1 > $2
return 0
}
#
# Compression function plus latest copy
SUFFIX=""
compression () {
if [ "$COMP" = "gzip" ]; then
	gzip -f "$1"
	echo
	echo Backup Information for "$1"
	gzip -l "$1.gz"
	SUFFIX=".gz"
elif [ "$COMP" = "bzip2" ]; then
	echo Compression information for "$1.bz2"
	bzip2 -f -v $1 2>&1
	SUFFIX=".bz2"
else
	echo "No compression option set, check advanced settings"
fi
if [ "$LATEST" = "yes" ]; then
	cp $1$SUFFIX "$BACKUPDIR/latest/"
fi
return 0
}
#
#
# Run command before we begin
if [ "$PREBACKUP" ]
	then
	echo ======================================================================
	echo "Prebackup command output."
	echo
	eval $PREBACKUP
	echo
	echo ======================================================================
	echo
fi
#
#
if [ "$SEPDIR" = "yes" ]; then # Check if CREATE DATABSE should be included in Dump
	if [ "$CREATE_DATABASE" = "no" ]; then
		OPT="$OPT --no-create-db"
	else
		OPT="$OPT --databases"
	fi
else
	OPT="$OPT --databases"
fi

# Hostname for LOG information
if [ "$DBHOST" = "localhost" ]; then
	HOST=`hostname`
	if [ "$SOCKET" ]; then
		OPT="$OPT --socket=$SOCKET"
	fi
else
	HOST=$DBHOST
fi
#
# If backing up all DBs on the server
if [ "$DBNAMES" = "all" ]; then
        DBNAMES="`mysql --user=$USERNAME --password=$PASSWORD --host=$DBHOST --batch --skip-column-names -e "show databases"| sed 's/ /%/g'`"
#
	# If DBs are excluded
	for exclude in $DBEXCLUDE
	do
		DBNAMES=`echo $DBNAMES | sed "s/\b$exclude\b//g"`
	done

        MDBNAMES=$DBNAMES
fi
#
echo ======================================================================
echo AutoMySQLBackup VER $VER
echo Backup of Database Server - $HOST
echo ======================================================================
#
# Test is seperate DB backups are required
if [ "$SEPDIR" = "yes" ]; then
echo Backup Start Time `date`
echo ======================================================================
	# Monthly Full Backup of all Databases
	if [ $DOM = "01" ]; then
		for MDB in $MDBNAMES
		do
#
			 # Prepare $DB for using
		        MDB="`echo $MDB | sed 's/%/ /g'`"

			if [ ! -e "$BACKUPDIR/monthly/$MDB" ]		# Check Monthly DB Directory exists.
			then
				mkdir -p "$BACKUPDIR/monthly/$MDB"
			fi
			echo Monthly Backup of $MDB...
				dbdump "$MDB" "$BACKUPDIR/monthly/$MDB/${MDB}_$DATE.$M.$MDB.sql"
				compression "$BACKUPDIR/monthly/$MDB/${MDB}_$DATE.$M.$MDB.sql"
				BACKUPFILES="$BACKUPFILES $BACKUPDIR/monthly/$MDB/${MDB}_$DATE.$M.$MDB.sql$SUFFIX"
			echo ----------------------------------------------------------------------
		done
	fi
#
	for DB in $DBNAMES
	do
	# Prepare $DB for using
	DB="`echo $DB | sed 's/%/ /g'`"
#
	# Create Seperate directory for each DB
	if [ ! -e "$BACKUPDIR/daily/$DB" ]		# Check Daily DB Directory exists.
		then
		mkdir -p "$BACKUPDIR/daily/$DB"
	fi
#
	if [ ! -e "$BACKUPDIR/weekly/$DB" ]		# Check Weekly DB Directory exists.
		then
		mkdir -p "$BACKUPDIR/weekly/$DB"
	fi
#
	# Weekly Backup
	if [ $DNOW = $DOWEEKLY ]; then
		echo Weekly Backup of Database \( $DB \)
		echo Rotating 5 weeks Backups...
			if [ "$W" -le 05 ];then
				REMW=`expr 48 + $W`
			elif [ "$W" -lt 15 ];then
				REMW=0`expr $W - 5`
			else
				REMW=`expr $W - 5`
			fi
		eval rm -fv "$BACKUPDIR/weekly/$DB_week.$REMW.*"
		echo
			dbdump "$DB" "$BACKUPDIR/weekly/$DB/${DB}_week.$W.$DATE.sql"
			compression "$BACKUPDIR/weekly/$DB/${DB}_week.$W.$DATE.sql"
			BACKUPFILES="$BACKUPFILES $BACKUPDIR/weekly/$DB/${DB}_week.$W.$DATE.sql$SUFFIX"
		echo ----------------------------------------------------------------------
#
	# Daily Backup
	else
		echo Daily Backup of Database \( $DB \)
		echo Rotating last weeks Backup...
		eval rm -fv "$BACKUPDIR/daily/$DB/*.$DOW.sql.*"
		echo
			dbdump "$DB" "$BACKUPDIR/daily/$DB/${DB}_$DATE.$DOW.sql"
			compression "$BACKUPDIR/daily/$DB/${DB}_$DATE.$DOW.sql"
			BACKUPFILES="$BACKUPFILES $BACKUPDIR/daily/$DB/${DB}_$DATE.$DOW.sql$SUFFIX"
		echo ----------------------------------------------------------------------
	fi
	done
echo Backup End `date`
echo ======================================================================
#
#
else # One backup file for all DBs
echo Backup Start `date`
echo ======================================================================
	# Monthly Full Backup of all Databases
	if [ $DOM = "01" ]; then
		echo Monthly full Backup of \( $MDBNAMES \)...
			dbdump "$MDBNAMES" "$BACKUPDIR/monthly/$DATE.$M.all-databases.sql"
			compression "$BACKUPDIR/monthly/$DATE.$M.all-databases.sql"
			BACKUPFILES="$BACKUPFILES $BACKUPDIR/monthly/$DATE.$M.all-databases.sql$SUFFIX"
		echo ----------------------------------------------------------------------
	fi
#
	# Weekly Backup
	if [ $DNOW = $DOWEEKLY ]; then
		echo Weekly Backup of Databases \( $DBNAMES \)
		echo
		echo Rotating 5 weeks Backups...
			if [ "$W" -le 05 ];then
				REMW=`expr 48 + $W`
			elif [ "$W" -lt 15 ];then
				REMW=0`expr $W - 5`
			else
				REMW=`expr $W - 5`
			fi
		eval rm -fv "$BACKUPDIR/weekly/week.$REMW.*"
		echo
			dbdump "$DBNAMES" "$BACKUPDIR/weekly/week.$W.$DATE.sql"
			compression "$BACKUPDIR/weekly/week.$W.$DATE.sql"
			BACKUPFILES="$BACKUPFILES $BACKUPDIR/weekly/week.$W.$DATE.sql$SUFFIX"
		echo ----------------------------------------------------------------------
#
	# Daily Backup
	else
		echo Daily Backup of Databases \( $DBNAMES \)
		echo
		echo Rotating last weeks Backup...
		eval rm -fv "$BACKUPDIR/daily/*.$DOW.sql.*"
		echo
			dbdump "$DBNAMES" "$BACKUPDIR/daily/$DATE.$DOW.sql"
			compression "$BACKUPDIR/daily/$DATE.$DOW.sql"
			BACKUPFILES="$BACKUPFILES $BACKUPDIR/daily/$DATE.$DOW.sql$SUFFIX"
		echo ----------------------------------------------------------------------
	fi
echo Backup End Time `date`
echo ======================================================================
fi
echo Total disk space used for backup storage..
echo Size - Location
echo `du -hs "$BACKUPDIR"`
#
# Run command when we're done
if [ "$POSTBACKUP" ]
	then
	echo ======================================================================
	echo "Postbackup command output."
	echo
	eval $POSTBACKUP
	echo
	echo ======================================================================
fi
#
#Clean up IO redirection
exec 1>&6 6>&-      # Restore stdout and close file descriptor #6.
exec 1>&7 7>&-      # Restore stdout and close file descriptor #7.
#
if [ "$MAILCONTENT" = "files" ]
then
	if [ -s "$LOGERR" ]
	then
		# Include error log if is larger than zero.
		BACKUPFILES="$BACKUPFILES $LOGERR"
		ERRORNOTE="WARNING: Error Reported - "
	fi
	#Get backup size
	ATTSIZE=`du -c $BACKUPFILES | grep "[[:digit:][:space:]]total$" |sed s/\s*total//`
	if [ $MAXATTSIZE -ge $ATTSIZE ]
	then
		BACKUPFILES=`echo "$BACKUPFILES" | sed -e "s# # -a #g"`	#enable multiple attachments
		mutt -s "$ERRORNOTE MySQL Backup Log and SQL Files for $HOST - $DATE" $BACKUPFILES $MAILADDR < $LOGFILE		#send via mutt
	else
		cat "$LOGFILE" | mail -s "WARNING! - MySQL Backup exceeds set maximum attachment size on $HOST - $DATE" $MAILADDR
	fi
elif [ "$MAILCONTENT" = "log" ]
then
	cat "$LOGFILE" | mail -s "MySQL Backup Log for $HOST - $DATE" $MAILADDR
	if [ -s "$LOGERR" ]
		then
			cat "$LOGERR" | mail -s "ERRORS REPORTED: MySQL Backup error Log for $HOST - $DATE" $MAILADDR
	fi
elif [ "$MAILCONTENT" = "quiet" ]
then
	if [ -s "$LOGERR" ]
		then
			cat "$LOGERR" | mail -s "ERRORS REPORTED: MySQL Backup error Log for $HOST - $DATE" $MAILADDR
			cat "$LOGFILE" | mail -s "MySQL Backup Log for $HOST - $DATE" $MAILADDR
	fi
else
	if [ -s "$LOGERR" ]
		then
			cat "$LOGFILE"
			echo
			echo "###### WARNING ######"
			echo "Errors reported during AutoMySQLBackup execution.. Backup failed"
			echo "Error log below.."
			cat "$LOGERR"
	else
		cat "$LOGFILE"
	fi
fi
#
if [ -s "$LOGERR" ]
	then
		STATUS=1
	else
		STATUS=0
fi
#
# Clean up Logfile
eval rm -f "$LOGFILE"
eval rm -f "$LOGERR"
#
exit $STATUS