xtarbackup使用心得

标签：xtarbackup

xtarback是一款不锁表的热备份工具

Percona XtraBackup is an open-source hot backup utility for MySQL - based servers that doesn’t lock your database during the backup.

官网

https://www.percona.com

xtarback由2部分组成

1，xtarbackup，主要用于xtardb 和innodb的备份

2，innobackupex , 主要用于innodb和myisam备份

下载地址

wget https://www.percona.com/downloads/XtraBackup/Percona-XtraBackup-2.4.1/binary/redhat/6/x86_64/Percona-XtraBackup-2.4.1-ra2dc9d4-el6-x86_64-bundle.tar

本文使用数据库为

Variable_name           | Value                        |

+-------------------------+------------------------------+

| version                 | 5.6.29                       |

| version_comment         | MySQL Community Server (GPL) |

| version_compile_machine | x86_64                       |

| version_compile_os      | linux-glibc2.5   

如有问题请自行下载相对应版本

tar xvf Percona-XtraBackup-2.4.1-ra2dc9d4-el6-x86_64-bundle.tar 

yum install percona-xtrabackup-24-2.4.1-1.el6.x86_64.rpm 

全量备份

innobackupex --defaults-file=/etc/my.cnf --user=root --password=123456 /data/mysql01/

160308 23:54:48 Executing UNLOCK TABLES

160308 23:54:48 All tables unlocked

160308 23:54:48 Backup created in directory ‘/data/mysql011/2016-03-08_23-54-37‘

160308 23:54:48 [00] Writing backup-my.cnf

160308 23:54:48 [00]        ...done

160308 23:54:48 [00] Writing xtrabackup_info

160308 23:54:48 [00]        ...done

xtrabackup: Transaction log of lsn (1634354) to (1634354) was copied.

160308 23:54:48 completed OK!

[root@localhost mysql]# echo $?

0

备份成功

备份单独数据库 并压缩到/mysql01下 

innobackupex --defaults-file=/etc/my.cnf --user=root --password=123456 --database=bbs --stream=tar /data/mysql01/ 2>/data/mysql01/bbs.log |gzip 1>/data/mysql01/bbs.tar.gz

2>/data/mysql01/bbs.log 为记录备份过程

ls /data/mysql01

2016-03-08_22-40-16  bbs.log  bbs.tar.g

恢复数据库

删除了bbs数据库文件

恢复

关闭mysql /etc/init.d/mysql stop

innobackupex --user=root --password=123456 --default-file=/etc/my.cnf --apply-log /data/mysql01

继续恢复

innobackupex --user=root --password=123456 --default-file=/etc/my.cnf --copy-back /data/mysql01/

报错

160309 00:04:10 innobackupex: Starting the copy-back operation

IMPORTANT: Please check that the copy-back run completes successfully.

           At the end of a successful copy-back run innobackupex

           prints "completed OK!".

innobackupex version 2.4.1 based on MySQL server 5.7.10 Linux (x86_64) (revision id: a2dc9d4)

Original data directory . is not empty!

经过各种尝试后解决办法！（注意：适应版本只对实验版本）

mv /data/mysql /data/mysql.bak 对datadir重命名

建立空的datadir 

mkdir /data/mysql

在/etc/my.cnf 文件中添加一行内容 datadir=/data/mysql

在运行

innobackupex --user=root --password=123456 --default-file=/etc/my.cnf --copy-back /data/mysql01/

报错解决

60308 23:54:48 Executing UNLOCK TABLES

160308 23:54:48 All tables unlocked

160308 23:54:48 Backup created in directory ‘/data/mysql011/2016-03-08_23-54-37‘

160308 23:54:48 [00] Writing backup-my.cnf

160308 23:54:48 [00]        ...done

160308 23:54:48 [00] Writing xtrabackup_info

160308 23:54:48 [00]        ...done

xtrabackup: Transaction log of lsn (1634354) to (1634354) was copied.

160308 23:54:48 completed OK!

进入mysql

mysql> show databases;

+--------------------+

| Database           |

+--------------------+

| information_schema |

| bbs                |

| mysql              |

| performance_schema |

| test1              |

+--------------------+

数据恢复成功

给/data/mysql 目录赋予权限

chown mysql:mysql /data/mysql -R

网站可以成功访问

本文出自 “学习linux” 博客，请务必保留此出处http://10265013.blog.51cto.com/10255013/1748813

xtarbackup使用心得

标签：xtarbackup

原文地址：http://10265013.blog.51cto.com/10255013/1748813