如何更改 MySQL 数据目录?

问题描述

是否可以将我的默认 MySQL 数据目录更改为其他路径?我可以从旧位置访问数据库吗?

解决方案

1. 使用以下命令停止 MySQL:

   sudo/etc/init.d/mysql stop

2. 使用以下命令复制现有数据目录(默认位于/var/lib/mysql):

   sudo cp -R -p/var/lib/mysql/newpath

3. 使用以下命令编辑 MySQL 配置文件:

   sudo gedit/etc/mysql/my.cnf # 或者/etc/mysql/mysql.conf.d/mysqld.cnf

4. 查找datadir 的条目，并将路径(应该是/var/lib/mysql)更改为新的数据目录.p>

5. 在终端输入命令:

   sudo gedit/etc/apparmor.d/usr.sbin.mysqld

6. 查找以 /var/lib/mysql 开头的行.使用新路径在行中更改 /var/lib/mysql.

7. 保存并关闭文件.

8. 使用以下命令重新启动 AppArmor 配置文件:

   sudo/etc/init.d/apparmor reload

9. 使用以下命令重启 MySQL:

   sudo/etc/init.d/mysql restart

10. 现在登录 MySQL，您可以访问与以前相同的数据库.

Is it possible to change my default MySQL data directory to another path? Will I be able to access the databases from the old location?

解决方案

1. Stop MySQL using the following command:

   sudo /etc/init.d/mysql stop
   

2. Copy the existing data directory (default located in /var/lib/mysql) using the following command:

   sudo cp -R -p /var/lib/mysql /newpath
   

3. edit the MySQL configuration file with the following command:

   sudo gedit /etc/mysql/my.cnf   # or perhaps /etc/mysql/mysql.conf.d/mysqld.cnf
   

4. Look for the entry for datadir, and change the path (which should be /var/lib/mysql) to the new data directory.

5. In the terminal, enter the command:

   sudo gedit /etc/apparmor.d/usr.sbin.mysqld
   

6. Look for lines beginning with /var/lib/mysql. Change /var/lib/mysql in the lines with the new path.

7. Save and close the file.

8. Restart the AppArmor profiles with the command:

   sudo /etc/init.d/apparmor reload
   

9. Restart MySQL with the command:

   sudo /etc/init.d/mysql restart
   

10. Now login to MySQL and you can access the same databases you had before.

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