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#!/bin/bash
#
# MySQL Backup Script
# VER. 2.2 - sourceforge.net/projects/automysqlbackup/
# Copyright (c) 2002-2003 wipe_out@lycos.co.uk
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# 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
#
#================================================= ====================
#================================================= ====================
# 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=xxx

# 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="/backup"

# 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.
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="xxx@t-online.de"


# ================================================== ==========
# === 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=""

# 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

# 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"

#================================================= ====================
# Options documantation
#================================================= ====================
# Set USERNAME and PASSWORD of a user that has at least SELECT permission
# to ALL databases.
#
# Set the DBHOST option to the server you wish to backup, leave the
# default to backup "this server".(to backup multiple servers make
# copies of this file and set the options for that server)
#
# Put in the list of DBNAMES(Databases)to be backed up. If you would like
# to backup ALL DBs on the server set DBNAMES="all".(if set to "all" then
# any new DBs will automatically be backed up without needing to modify
# this backup script when a new DB is created).
#
# If the DB you want to backup has a space in the name replace the space
# with a % e.g. "data base" will become "data%base"
# NOTE: Spaces in DB names may not work correctly when SEPDIR=no.
#
# You can change the backup storage location from /backups to anything
# you like by using the BACKUPDIR setting..
#
# The MAILCONTENT and MAILADDR options and pretty self explanitory, use
# these to have the backup log mailed to you at any email address or multiple
# email addresses in a space seperated list.
# (If you set mail content to "log" you will require access to the "mail" program
# on your server. If you set this to "files" you will have to have mutt installed
# on your server. If you set it sto stdout it will log to the screen if run from
# the console or to the cron job owner if run through cron)
#
# MAXATTSIZE sets the largest allowed email attachments total (all backup files) you
# want the script to send. This is the size before it is encoded to be sent as an email
# so if your mail server will allow a maximum mail size of 5MB I would suggest setting
# MAXATTSIZE to be 25% smaller than that so a setting of 4000 would probably be fine.
#
# Finally copy automysqlbackup.sh to anywhere on your server and make sure
# to set executable permission. You can also copy the script to
# /etc/cron.daily to have it execute automatically every night or simply
# place a symlink in /etc/cron.daily to the file if you wish to keep it
# somwhere else.
# NOTEn Debian copy the file with no extention for it to be run
# by cron e.g just name the file "automysqlbackup"
#
# Thats it..
#
#
# === Advanced options doc's ===
#
# The list of MDBNAMES is the DB's to be backed up only monthly. You should
# always include "mysql" in this list to backup your user/password
# information along with any other DBs that you only feel need to
# be backed up monthly. (if using a hosted server then you should
# probably remove "mysql" as your provider will be backing this up)
# NOTE: If DBNAMES="all" then MDBNAMES has no effect as all DBs will be backed
# up anyway.
#
# If you set DBNAMES="all" you can configure the option DBEXCLUDE. Other
# wise this option will not be used.
# This option can be used if you want to backup all dbs, but you want
# exclude some of them. (eg. a db is to big).
#
# Set CREATE_DATABASE to "yes" (the default) if you want your SQL-Dump to create
# a database with the same name as the original database when restoring.
# Saying "no" here will allow your to specify the database name you want to
# restore your dump into, making a copy of the database by using the dump
# created with automysqlbackup.
# NOTE: Not used if SEPDIR=no
#
# The SEPDIR option allows you to choose to have all DBs backed up to
# a single file (fast restore of entire server in case of crash) or to
# seperate directories for each DB (each DB can be restored seperately
# in case of single DB corruption or loss).
#
# To set the day of the week that you would like the weekly backup to happen
# set the DOWEEKLY setting, this can be a value from 1 to 7 where 1 is Monday,
# The default is 6 which means that weekly backups are done on a Saturday.
#
# COMP is used to choose the copmression used, options are gzip or bzip2.
# bzip2 will produce slightly smaller files but is more processor intensive so
# may take longer to complete.
#
# Use PREBACKUP and POSTBACKUP to specify Per and Post backup commands
# or scripts to perform tasks either before or after the backup process.
#
#
#================================================= ====================
# Backup Rotation..
#================================================= ====================
#
# Daily Backups are rotated weekly..
# Weekly Backups are run by default on Saturday Morning when
# cron.daily scripts are run...Can be changed with DOWEEKLY setting..
# Weekly Backups are rotated on a 5 week cycle..
# Monthly Backups are run on the 1st of the month..
# Monthly Backups are NOT rotated automatically...
# It may be a good idea to copy Monthly backups offline or to another
# server..
#
#================================================= ====================
# Please Note!!
#================================================= ====================
#
# I take no resposibility for any data loss or corruption when using
# this script..
# This script will not help in the event of a hard drive crash. If a
# copy of the backup has not be stored offline or on another PC..
# You should copy your backups offline regularly for best protection.
#
# Happy backing up...
#
#================================================= ====================
# Restoring
#================================================= ====================
# Firstly you will need to uncompress the backup file.
# eg.
# gunzip file.gz (or bunzip2 file.bz2)
#
# Next you will need to use the mysql client to restore the DB from the
# sql file.
# eg.
# mysql --user=username --pass=password --host=dbserver database < /path/file.sql
# or
# mysql --user=username --pass=password --host=dbserver -e "source /path/file.sql" database
#
# NOTE: Make sure you use "<" and not ">" in the above command because
# you are piping the file.sql to mysql and not the other way around.
#
# Lets hope you never have to use this..
#
#================================================= ====================
# Change Log
#================================================= ====================
#
# VER 2.2 - (2004-12-05)
# Changed from using depricated "-N" to "--skip-column-names".
# Added ability to have compressed backup's emailed out. (code from Thomas Heiserowski)
# Added maximum attachment size setting.
# VER 2.1 - (2004-11-04)
# Fixed a bug in daily rotation when not using gzip compression. (Fix by Rob Rosenfeld)
# VER 2.0 - (2004-07-2
# Switched to using IO redirection instead of pipeing the output to the logfile.
# Added choice of compression of backups being gzip of bzip2.
# Switched to using functions to facilitate more functionality.
# Added option of either gzip or bzip2 compression.
# VER 1.10 - (2004-07-17)
# Another fix for spaces in the paths (fix by Thomas von Eyben)
# Fixed bug when using PREBACKUP and POSTBACKUP commands containing many arguments.
# VER 1.9 - (2004-05-25)
# Small bug fix to handle spaces in LOGFILE path which contains spaces (reported by Thomas von Eyben)
# Updated docs to mention that Log email can be sent to multiple email addresses.
# VER 1.8 - (2004-05-01)
# Added option to make backups restorable to alternate database names
# meaning that a copy of the database can be created (Based on patch by Rene Hoffmann)
# Seperated options into standard and advanced.
# Removed " from single file dump DBMANES because it caused an error but
# this means that if DB's have spaces in the name they will not dump when SEPDIR=no.
# Added -p option to mkdir commands to create multiple subdirs without error.
# Added disk usage and location to the bottom of the backup report.
# VER 1.7 - (2004-04-22)
# Fixed an issue where weelky backups would only work correctly if server
# locale was set to English (issue reported by Tom Ingberg)
# used "eval" for "rm" commands to try and resolve rotation issues.
# Changed name of status log so multiple scripts can be run at the same time.
# VER 1.6 - (2004-03-14)
# Added PREBACKUP and POSTBACKUP command functions. (patch by markpustjens)
# Added support for backing up DB's with Spaces in the name.
# (patch by markpustjens)
# VER 1.5 - (2004-02-24)
# Added the ability to exclude DB's when the "all" option is used.
# (Patch by kampftitan)
# VER 1.4 - (2004-02-02)
# Project moved to Sourceforge.net
# VER 1.3 - (2003-09-25)
# Added support for backing up "all" databases on the server without
# having to list each one seperately in the configuration.
# Added DB restore instructions.
# VER 1.2 - (2003-03-16)
# Added server name to the backup log so logs from multiple servers
# can be easily identified.
# VER 1.1 - (2003-03-13)
# Small Bug fix in monthly report. (Thanks Stoyanski)
# Added option to email log to any email address. (Inspired by Stoyanski)
# Changed Standard file name to .sh extention.
# Option are set using yes and no rather than 1 or 0.
# VER 1.0 - (2003-01-30)
# Added the ability to have all databases backup to a single dump
# file or seperate directory and file for each database.
# Output is better for log keeping.
# VER 0.6 - (2003-01-22)
# Bug fix for daily directory (Added in VER 0.5) rotation.
# VER 0.5 - (2003-01-20)
# Added "daily" directory for daily backups for neatness (suggestion by Jason)
# Added DBHOST option to allow backing up a remote server (Suggestion by Jason)
# Added "--quote-names" option to mysqldump command.
# Bug fix for handling the last and first of the year week rotation.
# VER 0.4 - (2002-11-06)
# Added the abaility for the script to create its own directory structure.
# VER 0.3 - (2002-10-01)
# Changed Naming of Weekly backups so they will show in order.
# VER 0.2 - (2002-09-27)
# Corrected weekly rotation logic to handle weeks 0 - 10
# VER 0.1 - (2002-09-21)
# Initial Release
#
#================================================= ====================
#================================================= ====================
#================================================= ====================
#
# Should not need to be modified from here down!!
#
#================================================= ====================
#================================================= ====================
#================================================= ====================
PATH=/usr/local/bin:/usr/bin:/bin
DATE=`date +%Y-%m-%d` # 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=2.2 # Version Number
LOGFILE=$BACKUPDIR/$DBHOST-`date +%N`.log # Logfile Name
OPT="--quote-names --opt" # OPT string for use with mysqldump ( see man mysqldump )
BACKUPFILES="" # thh: added for later mailing

# 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


# IO redirection for logging.
touch $LOGFILE
exec 6>&1 # Link file descriptor #6 with stdout.
# Saves stdout.
exec > $LOGFILE # stdout replaced with file $LOGFILE.


# Functions

# Database dump function
dbdump () {
mysqldump --user=$USERNAME --password=$PASSWORD --host=$DBHOST $OPT $1 > $2
return 0
}

# Compression function
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
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 [ '$DBHOST' = 'localhost' ]; then
HOST=`hostname`
else
HOST=$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 sourceforge.net/projects/automysqlbackup/
echo
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"`
echo
echo ================================================== ====================
echo If you find AutoMySQLBackup valuable please make a donation at
echo sourceforge.net/project/proj...group_id=101066
echo ================================================== ====================

# 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.

if [ '$MAILCONTENT' = 'files' ]
then
#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 "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" $MAILADDR
else
cat "$LOGFILE"
fi

# Clean up Logfile
eval rm -f "$LOGFILE"

exit 0