单MySql服务器下的增量备份脚本

# crontab -l

*/15 * * * * /usr/sbin/ntpdate 210.72.145.44 > /dev/null 2>&1
#每周日的2：01进行一次全备
01 02 * * 0 /usr/local/bin/mysqlbakfull.sh  > /dev/null 2>&1
#每周一至六的2:01进行增量备份
01 02 * * 1-6 /usr/local/bin/mysqlbak.sh  > /dev/null 2>&1

# cat /usr/local/bin/mysqlbakfull.sh

#!/bin/bash
#定义一年中的第几周
datestr=`date +%Y%m-%U`
#定义数据库备份目录
sqlbakdir=/opt/mysqlbak/$datestr
#数据库数据目录
mysqldir=/usr/local/mysql/data/;
#定义要拷贝的bin-log文件
a=`tail -n1 $mysqldir/mysql-bin.index |cut -c3-18`
#创建数据库备份目录
if [ ! -d "$sqlbakdir" ]; then
mkdir -p "$sqlbakdir"
fi
#全备数据到指定的目录中
/usr/local/mysql/bin/mysqldump --opt -uroot -p'password' dbname > $sqlbakdir/dbname.sql
#全备后可以删除不需要的bin-log文件，节省磁盘空间
/usr/local/mysql/bin/mysql -uroot -p'password' -e "PURGE BINARY LOGS TO '$a';";
#/usr/local/mysql/bin/mysql -uroot -p'password' -e "PURGE BINARY LOGS BEFORE '$tadayis 02:01:00';";

# cat /usr/local/bin/mysqlbak.sh

#!/bin/bash
datestr=`date +%Y%m-%U`;
#日期格式形如“201010080201”
datestr2=`date '+%Y%m%d%H%M'`;
mysqldir=/usr/local/mysql/data/;
sqlbakdir=/opt/mysqlbak/$datestr
cd $mysqldir
a=`tail -n1 $mysqldir/mysql-bin.index`
/usr/local/mysql/bin/mysqladmin -uroot -p'password' flush-logs
cp $a $sqlbakdir/mysql-bin.$datestr2

最后再做个计划任务，将目录$datestr打包用ftp/ssh/rsync传输到异地