MySQL备份与恢复之冷备

第二步，停掉MySQL

[root@serv01 ~]# /etc/init.d/mysqld stop
Shutting down MySQL... SUCCESS! 

第三步，创建备份目录，并修改拥有者和所属组

[root@serv01 ~]# mkdir /databackup
[root@serv01 ~]# chown mysql.mysql /databackup/ -R
[root@serv01 ~]# ll /databackup/ -d
drwxr-xr-x. 2 mysql mysql 4096 Sep 10 17:46 /databackup/
[root@serv01 ~]# cd /databackup/

第四步，冷备（使用tar命令）

[root@serv01 databackup]# tar -cvPzf mysql01.tar.gz 

第五步，测试冷备的数据是否正常，我们删除掉data下的所有数据

[root@serv01 databackup]# rm -rf /usr/local/mysql/data/*

第六步，删除所有数据后数据库不能启动

[root@serv01 databackup]# /etc/init.d/mysqld start
Starting MySQL.. ERROR! The server quit without updating PID file (/usr/local/mysql/data/serv01.host.com.pid).

第七步，恢复数据（使用tar命令）

[root@serv01 databackup]# tar -xvPf mysql01.tar.gz 

第八步，启动MySQL，然后登录MySQL，查看数据是否丢失，如果数据正常代表冷备成功

[root@serv01 databackup]# /etc/init.d/mysqld start
Starting MySQL.. SUCCESS! 

[root@serv01 ~]# mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.5.29-log Source distribution

Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> use larrydb;
Database changed
mysql> select * from class;
+------+--------+
| cid | cname |
+------+--------+
| 1 | linux |
| 2 | oracle |
+------+--------+
2 rows in set (0.00 sec)

mysql> select * from stu;
+------+---------+------+
| sid | sname | cid |
+------+---------+------+
| 1 | larry01 | 1 |
| 2 | larry02 | 2 |
+------+---------+------+
2 rows in set (0.00 sec)

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 All is well
 2013年11月2日
 By Larry Wen

	@Wentasy