mysql备份脚本(线上使用的)

线上使用的mysql备份脚本，使用mysqldump备份，在mysql master上使用的，在本地备份完成之后，同时传输一份备份文件至远程的ftp服务器上，实现异地备份，本机保存20天的备份文件，远端保存60天的备份文件。

建立备份用户

mysql> grant select,lock tables,reload,super,file,show view on *.* to 'mysqlbackup'@'localhost' identified by 'mysql_ritto'; 
mysql> flush privileges; 

备份脚本

#!/bin/bash

USERNAME=mysqlbackup
PASSWORD=mysql_ritto
 
DATE=`date +%Y-%m-%d`
OLDDATE=`date +%Y-%m-%d -d '-20 days'`
FTPOLDDATE=`date +%Y-%m-%d -d '-60 days'`

MYSQL=/usr/local/mysql/bin/mysql
MYSQLDUMP=/usr/local/mysql/bin/mysqldump
MYSQLADMIN=/usr/local/mysql/bin/mysqladmin
SOCKET=/tmp/mysql.sock
 
BACKDIR=/data/backup/db
[ -d ${BACKDIR} ] || mkdir -p ${BACKDIR}
[ -d ${BACKDIR}/${DATE} ] || mkdir ${BACKDIR}/${DATE}
[ ! -d ${BACKDIR}/${OLDDATE} ] || rm -rf ${BACKDIR}/${OLDDATE}
 
for DBNAME in mysql db1 db2 db3
do
   ${MYSQLDUMP} --opt --master-data=2 --tz-utc=true -u${USERNAME} -p${PASSWORD} -S${SOCKET} ${DBNAME} | gzip > ${BACKDIR}/${DATE}/${DBNAME}-backup-${DATE}.s l.gz
   logger "${DBNAME} has been backup successful - $DATE"
   /bin/sleep 5
done 
 

HOST=10.1.2.22
FTP_USERNAME=db1
FTP_PASSWORD=db1_ritto
 
cd ${BACKDIR}/${DATE}
 
ftp -i -n -v << !
open ${HOST} 
user ${FTP_USERNAME} ${FTP_PASSWORD}
bin
cd ${FTPOLDDATE}
mdelete *
cd ..
rmdir ${FTPOLDDATE}
mkdir ${DATE}
cd ${DATE}
mput *
bye
!

备份后的目录结构是这个样子的

[root@db1 db]# ls 
2011-11-10  2011-11-12  2011-11-14  2011-11-16  2011-11-18  2011-11-20  2011-11-22  2011-11-24  2011-11-26  2011-11-28 
2011-11-11  2011-11-13  2011-11-15  2011-11-17  2011-11-19  2011-11-21  2011-11-23  2011-11-25  2011-11-27  2011-11-29 
[root@db1 db]# ls -lhtr 2011-11-29/ 
total 3.1G 
-rw-r--r-- 1 root root 133K Nov 29 02:01 mysql-backup-2011-11-29.sql.gz 
-rw-r--r-- 1 root root 1.5G Nov 29 02:06 db1-backup-2011-11-29.sql.gz 
-rw-r--r-- 1 root root  35M Nov 29 02:06 db2-backup-2011-11-29.sql.gz 

原文地址：http://ritto.blog.51cto.com/427838/729851

from www.waitalone.cn.thanks for it.