Home >Database >Mysql Tutorial >载]mysqlhotcopy 热备工具体验与总结

载]mysqlhotcopy 热备工具体验与总结

WBOY
WBOYOriginal
2016-05-31 08:46:57989browse
今天有空尝试了一下MYSQLHOTCOPY这个快速热备MYISAM引擎的工具。<br>(本文是针对单个服务器的情况,以后将会加入多服务器相关操作)<br>他和MYSQLDUMP的比较:<br>1、前者是一个快速文件意义上的COPY,后者是一个数据库端的SQL语句集合。<br>2、前者只能运行在数据库目录所在的机器上,后者可以用在远程客户端。<br>3、相同的地方都是在线执行LOCK TABLES 以及 UNLOCK TABLES<br>4、前者恢复只需要COPY备份文件到源目录覆盖即可,后者需要倒入SQL文件到原来库中。(source 或者/.或者 mysql 用MYSQLHOTCOPY备份的步骤:<br>1、有没有PERL-DBD模块安装<br>我的机器上:<br>[root@localhost data]# rpm -qa |grep perl-DBD | grep MySQL<br><br>perl-DBD-MySQL-3.0007-1.fc6<br>2、在数据库段分配一个专门用于备份的用户<br>mysql> grant select,reload,lock tables on *.* to 'hotcopyer'@'localhost' identified by '123456';<br>Query OK, 0 rows affected (0.00 sec)<br><br>mysql> flush privileges;<br>Query OK, 0 rows affected (0.00 sec)<br><br>3、在/etc/my.cnf或者登陆用户的个人主文件.my.cnf里面添加<br>[mysqlhotcopy]<br>interactive-timeout<br>user=hotcopyer<br>password=123456<br>port=3306<br>4、开始备份。<br>[root@localhost ~]# mysqlhotcopy t_girl t_girl_new<br><br>Locked 4 tables in 0 seconds.<br>Flushed tables (`t_girl`.`category`, `t_girl`.`category_part`, `t_girl`.`id`, `t_girl`.`parent`) in 0 seconds.<br>Copying 22 files...<br>Copying indices for 0 files...<br>Unlocked tables.<br>mysqlhotcopy copied 4 tables (22 files) in 5 seconds (5 seconds overall).<br><br>备份后的目录:<br>[root@localhost data]# du -h | grep t_girl<br><br>213M ./t_girl<br>213M ./t_girl_copy<br>[root@localhost ~]# <br><br>5、MYSQLHOTCOPY用法详解。<br>1)、mysqlhotcopy 原数据库名,新数据库名<br>[root@localhost ~]# mysqlhotcopy t_girl t_girl_new<br><br>Locked 4 tables in 0 seconds.<br>Flushed tables (`t_girl`.`category`, `t_girl`.`category_part`, `t_girl`.`id`, `t_girl`.`parent`) in 0 seconds.<br>Copying 22 files...<br>Copying indices for 0 files...<br>Unlocked tables.<br>mysqlhotcopy copied 4 tables (22 files) in 5 seconds (5 seconds overall).<br>2)、mysqlhotcopy 原数据库名,备份的目录<br>[root@localhost ~]# mysqlhotcopy t_girl /tmp/<br><br>Locked 4 tables in 0 seconds.<br>Flushed tables (`t_girl`.`category`, `t_girl`.`category_part`, `t_girl`.`id`, `t_girl`.`parent`) in 0 seconds.<br>Copying 22 files...<br>Copying indices for 0 files...<br>Unlocked tables.<br>mysqlhotcopy copied 4 tables (22 files) in 6 seconds (6 seconds overall).<br>3)、对单个表支持正则表达式<br>(除了id 表外)<br>[root@localhost data]# mysqlhotcopy t_girl./~id/ <br><br>Using copy suffix '_copy'<br>Locked 3 tables in 0 seconds.<br>Flushed tables (`t_girl`.`category`, `t_girl`.`category_part`, `t_girl`.`parent`) in 0 seconds.<br>Copying 19 files...<br>Copying indices for 0 files...<br>Unlocked tables.<br>mysqlhotcopy copied 3 tables (19 files) in 6 seconds (6 seconds overall).<br>[root@localhost data]# <br><br><br>4)、可以把记录写到专门的表中。具体察看帮助。<br>perldoc mysqlhostcopy<br><br>mysql> create database hotcopy;<br>Query OK, 1 row affected (0.03 sec)<br>mysql> use hotcopy<br>Database changed<br>mysql> create table checkpoint(time_stamp timestamp not null,src varchar(32),dest varchar(60), msg varchar(255));<br>Query OK, 0 rows affected (0.01 sec)<br>同时记得给hotcopyer用户权限。<br>mysql> grant insert on hotcopy.checkpoint to hotcopyer@'localhost';<br>Query OK, 0 rows affected (0.00 sec)<br><br>mysql> flush privileges;<br>Query OK, 0 rows affected (0.00 sec)<br><br>mysql> /q<br>Bye<br>重复第三步的操作<br><br>[root@localhost ~]# mysqlhotcopy t_girl./~id/ --allowold --checkpoint hotcopy.checkpoint<br><br>Using copy suffix '_copy'<br>Existing hotcopy directory renamed to '/usr/local/mysql/data/t_girl_copy_old'<br>Locked 3 tables in 0 seconds.<br>Flushed tables (`t_girl`.`category`, `t_girl`.`category_part`, `t_girl`.`parent`) in 0 seconds.<br>Copying 19 files...<br>Copying indices for 0 files...<br>Unlocked tables.<br>mysqlhotcopy copied 3 tables (19 files) in 12 seconds (13 seconds overall).<br><br><br>默认保存在数据目录下/t_girl_copy/<br>看看记录表。<br>mysql> use hotcopy; <br>Database changed<br>mysql> select * from checkpoint;<br>+---------------------+--------+-----------------------------------+-----------+<br>| time_stamp | src | dest | msg |<br>+---------------------+--------+-----------------------------------+-----------+<br>| 2008-03-11 14:44:58 | t_girl | /usr/local/mysql/data/t_girl_copy | Succeeded | <br>+---------------------+--------+-----------------------------------+-----------+<br>1 row in set (0.00 sec)<br><br>5)、支持增量备份。<br>[root@localhost ~]# mysqlhotcopy t_girl./~id/ --allowold --checkpoint hotcopy.checkpoint --addtodest t_girl_new<br><br>Locked 3 tables in 0 seconds.<br>Flushed tables (`t_girl`.`category`, `t_girl`.`category_part`, `t_girl`.`parent`) in 0 seconds.<br>Copying 19 files...<br>Copying indices for 0 files...<br>Unlocked tables.<br>mysqlhotcopy copied 3 tables (19 files) in 7 seconds (7 seconds overall).<br>6)、其它的等待测试过了再发布。。。

出处:http://www.cublog.cn/u/29134/showart_493525.html

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn