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HomeDatabaseMysql TutorialXtraBackup安装及使用

Xtrabackup是一个对InnoDB做数据备份的工具,支持在线热备份(备份时不影响数据读写),是商业备份工具InnoDB Hotbackup的一个很

简介:

Xtrabackup是一个对InnoDB做数据备份的工具,支持在线热备份(备份时不影响数据读写),是商业备份工具InnoDB Hotbackup的一个很好的替代品。

Xtrabackup有两个主要的工具:xtrabackup、innobackupex

(1)xtrabackup只能备份InnoDB和XtraDB两种数据表,而不能备份MyISAM数据表

(2)innobackupex-1.5.1则封装了xtrabackup,是一个脚本封装,所以能同时备份处理innodb和myisam,但在处理myisam时需要加一个读锁

(3)使用帮助::start

环境:CentOS 5.4,xtrabackup-1.6.tar.gz

1、首先从下载

wget

2、检查服务器是否安装了Mysql版本,如果没有就要安装好mysql

my.cnf中必须有datadir=/var/lib/mysql

3、开始安装xtrabackup

1)解压

cd /qeedoodb/setup

tar zxvf xtrabackup-1.6.tar.gz

2)拷贝innobackupex、xtrabackup、xtrabackup_51 工具到/usr/bin

cp /qeedoodb/setup/xtrabackup-1.6/bin/innobackupex /usr/bin/innobackupex

cp /qeedoodb/setup/xtrabackup-1.6/bin/xtrabackup  /usr/bin/xtrabackup

cp /qeedoodb/setup/xtrabackup-1.6/bin/xtrabackup_51  /usr/bin/xtrabackup_51

4、备份并打包压缩

innobackupex --user=root --password=123456 --defaults-file=/etc/my.cnf --database=zztx --stream=tar /data/back_data/ 2>/data/back_data/zztx.log | gzip    1>/data/back_data/zztx.tar.gz

说明:

--database=zztx 单独对zztx数据库做备份 ,,若是不添加此参数那就那就是对全库做备份

2>/data/back_data/zztx.log  输出信息写入日志中

1>/data/back_data/zztx.tar.gz 打包压缩存储到该文件中

此处可以写个脚本做备份(backup.sh)

#!/bin/sh

echo "开始备份..."`date`

log=zztx01_`date +%y%m%d%H%M`.log

str=zztx01_`date +%y%m%d%H%M`.tar.gz

innobackupex --user=root --password=123456 --defaults-file=/etc/my.cnf --database=zztx --stream=tar /data/back_data/ 2>/data/back_data/$log | gzip 1>/data/back_data/$str

echo "备份完毕..."`date`

5、恢复数据

1) 先停止数据库:service mysqld stop

2) 解压 tar -izxvf zztx.tar.gz -C /data/back_data/db/  (没有db ,需要mkdir /data/back_data/db/)

3) 恢复 innobackupex --user=root --password --defaults-file=/etc/my.cnf  --apply-log /data/back_data/db/  (--apply-log选项的命令是准备在一个备份上启动mysql服务)

innobackupex --user=root --password --defaults-file=/etc/my.cnf  --copy-back /data/back_data/db/  (--copy-back 选项的命令从备份目录拷贝数据,索引,日志到my.cnf文  件里规定的初始位置。)

4) 赋权 chown -R mysql.mysql /var/lib/mysql/*

5) 重启数据库 service mysqld restart

6) 删除垃圾 cd /var/lib/mysql/  && rm xtrabackup*

进入数据库查看,一切OK~

推荐阅读:

MySQL开源备份工具Xtrabackup备份部署

MySQL Xtrabackup备份和恢复

用XtraBackup实现MySQL的主从复制快速部署【主不锁表】

安装和使用 Percona 推出的 Xtrabackup 备份 MySQL

XtraBackup 的详细介绍:请点这里
XtraBackup 的下载地址:请点这里

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