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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