mysqldum全库数据压缩备份通用脚本

#!/bin/bash
#masterbak.sh version3.0 chmod 700
#writer jim
#00 03 * * * /usr/local/scripts/master_dbbak.sh
#history
#2016.11.19
#2016.12.3
export datetime=`date +"%Y%m%d"`
export base_bindir="/usr/local/mysql/bin"
export mysql_socket="/tmp/mysql.sock"
export mysql_password="youpassword"
#当然也可以在系统的家目录下加.my.cnf在里面的[mysql]和[mysqldump]下写上备份的账户密码
export datadir="`$base_bindir/mysql -S $mysql_socket -p$mysql_password -Bse "show variables like 'datadir';" |awk '{print $2}'`"
export mysql_backup="/data/backup/mysql_backup"
export masterbakdir="$mysql_backup/masterbakdir"
export backup_log="$masterbakdir/logs"
########################设定要备份的库################################
export exclude="information_schema|performance_schema|mysql"
export all_databases=`mysql -Bse "show databases;"|egrep -v "$exclude"`
 
if [ ! -e "$backup_log/"$datetime"" ];then
        mkdir -p $backup_log/"$datetime"
fi
 
#########################记录主库库状态#################################
$base_bindir/mysql -S $mysql_socket -p$mysql_password -e "select now();show master status\G" |tee -a $backup_log/"$datetime"/masterstat_${datetime}.log
###########################开始备份#####################################
echo "============================ start mysqldump `date`" | tee -a $backup_log/"$datetime"/masterstat_${datetime}.log
 
for i in $all_databases
do
    $base_bindir/mysqldump --allow-keywords -S $mysql_socket -p$mysql_password -R --add-locks --opt $i > $masterbakdir/$i-$datetime.sql
    echo "`date` $i backup success" |tee -a $backup_log/"$datetime"/masterstat_${datetime}.log
done
 
if [ $? -eq 0 ];then
    echo "============================ end mysqldump `date +"%Y-%m-%d %H:%M:%S"`"|tee -a $backup_log/"$datetime"/masterstat_${datetime}.log
else
    echo "`date` mysqldump backup fail"|tee -a $backup_log/"$datetime"/masterstat_${datetime}.log
fi
#########################进行数据压缩#######################################
/usr/bin/bzip2 -z $masterbakdir/*.sql
####################删除7天前的备份数据及30天前的log#################
find $masterbakdir -type f -ctime +7 -name "*.bz2" -exec rm -vf {} \; >> $backup_log/free-${datetime}.log
find $backup_log -type f -ctime +7 -name "free-*" -exec rm -vf {} \;
find $backup_log -type d -ctime +30 -name "*" -exec rm -vrf {} \;
exit 0