MYSQL 自动备份脚本

1.备份脚本

cat /usr/local/script/BackupDatabase  
#!/bin/bash  
    #Shell Command For Backup MySQL Database Everyday Automatically By Crontab  
    #time 2015-5-20 
     #name huxianglin 
    USER=root 
    PASSWORD=xxxxxxxx 
    DATABASE1=zblog 
    DATABASE2=zabbix 
    BACKUP_DIR=/data/backup/database/  #备份数据库文件的路径 
    LOGFILE=/data/backup/database/data_backup.log    #备份数据库脚本的日志文件 
    DATE=`date +%Y%m%d-%H%M -d -3minute`     #获取当前系统时间-3分钟 
    DUMPFILE1=$DATE-zblog.sql                #需要备份的数据库名称 
    DUMPFILE2=$DATE-zabbix.sql 
    ARCHIVE1=$DUMPFILE1-tar.gz                #备份的数据库压缩后的名称 
    ARCHIVE2=$DUMPFILE2-tar.gz 

    if [ ! -d $BACKUP_DIR ];                 #判断备份路径是否存在，若不存在则创建该路径 
    then  
    mkdir -p "$BACKUP_DIR" 
    fi  

    echo -e "\n" >> $LOGFILE   
    echo "------------------------------------" >> $LOGFILE  
    echo "BACKUP DATE:$DATE">> $LOGFILE  
    echo "------------------------------------" >> $LOGFILE  

    cd $BACKUP_DIR                           #跳到备份路径下 
    /usr/local/mysql/bin/mysqldump -u$USER -p$PASSWORD $DATABASE1 > $DUMPFILE1    #使用mysqldump备份数据库 
    if [[ $? == 0 ]]; then 
    tar czvf $ARCHIVE1 $DUMPFILE1 >> $LOGFILE 2>&1                               #判断是否备份成功，若备份成功，则压缩备份数据库，否则将错误日志写入日志文件中去。 
    echo "$ARCHIVE1 BACKUP SUCCESSFUL!" >> $LOGFILE  
    rm -f $DUMPFILE1 
    else  
    echo “$ARCHIVE1 Backup Fail!” >> $LOGFILE  
    fi 
    /usr/local/mysql/bin/mysqldump -u$USER -p$PASSWORD $DATABASE2 > $DUMPFILE2 
    if [[ $? == 0 ]]; then 
    tar czvf $ARCHIVE2 $DUMPFILE2 >> $LOGFILE 2>&1 
    echo "$ARCHIVE2 BACKUP SUCCESSFUL!" >> $LOGFILE 
    rm -f $DUMPFILE2 
    else 
    echo “$ARCHIVE2 Backup Fail!” >> $LOGFILE 
    fi 

2.删除过时备份脚本

#!/bin/bash 
#time 2015-05-21 
#name huxianglin 

BACKUPDIR="/data/backup/database/"                                     #定义备份文件路径 
KEEPTIME=7                                                             #定义需要删除的文件距离当前的天数 
DELFILE=`find $BACKUPDIR -type f -mtime +$KEEPTIME -exec ls {} \;`     #找到天数大于7天的文件 
for delfile in ${DELFILE}                                              #循环删除满足天数大于七天的文件 
do 
rm -f $delfile 
done 

3.crontab 定时执行脚本

at /etc/crontab  
SHELL=/bin/bash 
PATH=/sbin:/bin:/usr/sbin:/usr/bin 
MAILTO=root 
# For details see man 4 crontabs 
# Example of job definition: 
# .---------------- minute (0 - 59) 
# |  .------------- hour (0 - 23) 
# |  |  .---------- day of month (1 - 31) 
# |  |  |  .------- month (1 - 12) OR jan,feb,mar,apr ... 
# |  |  |  |  .---- day of week (0 - 6) (Sunday=0 or 7) OR sun,mon,tue,wed,thu,fri,sat 
# |  |  |  |  | 
# *  *  *  *  * user-name  command to be executed 
  01 00 * * * root /usr/local/script/BackupDatabase              #定义每天凌晨0点01分执行备份数据库脚本 
  02 00 * * 0 root /usr/local/script/CleanDatabase               #定义每周日凌晨0点02分执行删除数据库备份文件