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How to Safely Relocate Your MySQL Data Directory?

Susan Sarandon

Dec 12, 2024 pm 08:34 PM

How to Safely Relocate Your MySQL Data Directory?

How to Relocate MySQL Data Directory

Is it possible to transfer my MySQL data directory to a different location? Will I still have access to my databases after the move?

Answer:

Follow these steps to change the MySQL data directory:

Shut down MySQL:
```
sudo /etc/init.d/mysql stop
```
Copy the current data directory:
```
sudo cp -R -p /var/lib/mysql /newpath
```
Edit the MySQL configuration file:
```
sudo gedit /etc/mysql/my.cnf 
```
Locate the "datadir" entry and modify its path to the new data directory.

Edit the AppArmor profile:

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

Replace occurrences of "/var/lib/mysql" with the new path.
Save and close the file.
Restart AppArmor:
```
sudo /etc/init.d/apparmor reload
```
Restart MySQL:
```
sudo /etc/init.d/mysql restart
```
Log in to MySQL and confirm that you can access your previous databases.

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