mysql物理备份工具xtrabackup第一天----实战安装
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1、xtrabackup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
官网：https://www.percona.com/
2、xtrabackup的安装
2.1 安装配置
配置数据存储的目录
[root@xiaoya ~]# cat /etc/my.cnf |grep datadir
datadir=/var/lib/mysql
2.2 xtrabackup之二进制安装
[root@xiaoya opt]#
wget https://www.percona.com/downloads/XtraBackup/Percona-XtraBackup-2.3.3/binary/redhat/6/x86_64/Percona-XtraBackup-2.3.3-r525ca7d-el6-x86_64-bundle.tar
[root@xiaoya opt]# tar xf Percona-XtraBackup-2.3.3-r525ca7d-el6-x86_64-bundle.tar
[root@xiaoya opt]# ls
percona-xtrabackup-2.3.3-1.el6.x86_64.rpm
Percona-XtraBackup-2.3.3-r525ca7d-el6-x86_64-bundle.tar
percona-xtrabackup-debuginfo-2.3.3-1.el6.x86_64.rpm
percona-xtrabackup-test-2.3.3-1.el6.x86_64.rpm
安装必须的libev.so库
地址：http://rpmfind.net/linux/rpm2html/search.php?query=libev.so.4()(64bit)
[root@xiaoya ~]#
wget ftp://rpmfind.net/linux/epel/6/x86_64/libev-4.03-3.el6.x86_64.rpm
[root@xiaoya ~]# rpm -ivh libev-4.03-3.el6.x86_64.rpm
warning: libev-4.03-3.el6.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID 0608b895: NOKEY
Preparing... ########################################### [100%]
1:libev ########################################### [100%]
[root@xiaoya ~]# rpm -qa libev
libev-4.03-3.el6.x86_64
[root@xiaoya opt]# rpm -ivh percona-xtrabackup-2.3.3-1.el6.x86_64.rpm
Preparing... ########################################### [100%]
1:percona-xtrabackup ########################################### [100%]
[root@xiaoya opt]# rpm -ivh percona-xtrabackup-debuginfo-2.3.3-1.el6.x86_64.rpm
Preparing... ########################################### [100%]
1:percona-xtrabackup-debu########################################### [100%]
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2.3 xtrabackup之yum安装
2.3.1 Install the Percona repository
[root@xiaoya ~]# yum install
http://www.percona.com/downloads/percona-release/redhat/0.1-3/percona-release-0.1-3.noarch.rpm
2.3.2 Testing the repository
[root@xiaoya ~]# yum list | grep percona
……
percona-xtrabackup-22.x86_64 2.2.13-1.el6 percona-xtrabackup.x86_64 2.3.3-1.el6 percona-xtrabackup-20.x86_64 2.0.8-587.rhel6 percona-xtrabackup-20-debuginfo.x86_64 2.0.8-587.rhel6 percona-xtrabackup-20-test.x86_64 2.0.8-587.rhel6 percona-xtrabackup-21.x86_64 2.1.9-746.rhel6 percona-xtrabackup-21-debuginfo.x86_64 2.1.9-746.rhel6
percona-xtrabackup-22-debuginfo.x86_64 2.2.13-1.el6
percona-xtrabackup-debuginfo.x86_64 2.3.3-1.el6 percona-xtrabackup-test.x86_64 2.3.3-1.el6
percona-xtrabackup-test-21.x86_64 2.1.9-746.rhel6 percona-xtrabackup-test-22.x86_64 2.2.13-1.el6
……
2.3.3 Install the packages
[root@xiaoya ~]# yum install percona-xtrabackup-22
2.3.4 check tish packages
[root@xiaoya ~]# rpm -qa percona-xtrabackup-22
percona-xtrabackup-22-2.2.13-1.el6.x86_64
2.4 xtrabackup安装错误总结
2.4.1 xtrabackup安装错误
错误一：
报错如下：
[root@xiaoya opt]# rpm -ivh percona-xtrabackup-2.3.3-1.el6.x86_64.rpm
warning: percona-xtrabackup-2.3.3-1.el6.x86_64.rpm: Header V4 DSA/SHA1 Signature, key ID cd2efd2a: NOKEY
error: Failed dependencies:
libev.so.4()(64bit) is needed by percona-xtrabackup-2.3.3-1.el6.x86_64
perl(DBD::mysql) is needed by percona-xtrabackup-2.3.3-1.el6.x86_64
原因：
缺少安装必须的libev.so.4库。
缺少perl。
错误二:
报错如下：
[root@xiaoya opt]# rpm -ivh percona-xtrabackup-test-2.3.3-1.el6.x86_64.rpm
error: Failed dependencies:
/usr/bin/mysql is needed by percona-xtrabackup-test-2.3.3-1.el6.x86_64
解决：
ln -s /application/mysql/bin/mysql /usr/bin/mysql
export PATH=/application/mysql/bin:$PATH
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