How to configure environment variables for mysql

MySQL environment variables are used to configure server options. You can configure MySQL environment variables by creating an environment variable file, copying it to the appropriate directory, and then setting the file to the correct permissions.

How to configure environment variables in MySQL

MySQL environment variables are used to pass configuration options to the MySQL server at startup . They can be used to set various options such as listening ports, data directories, and other connection parameters.

Steps:

1. Create an environment variable file

Create a text file (for example .my. cnf) and add the following to it:

<code>[mysql]
variable-name=value</code>

Replace variable-name and value with the environment variable you want to set and its value.

2. Copy the file to the appropriate directory

Windows:

• Copy .my.cnf to %APPDATA%\MySQL\MySQL Server <Version>\my.ini

##macOS and Linux:

Copy
• . my.cnf to /etc/mysql/my.cnf

3. Set appropriate permissions for environment variables

Files should have appropriate permissions so that MySQL users can access them.

Windows:

Set file ownership to MySQL user
• Set file permissions to 644

macOS and Linux:

Set the file ownership to the MySQL user and group
• Set the file permissions to 644

4. Restart the MySQL server

After making changes to the environment variables, you need to restart the MySQL server for them to take effect.

Example:

To change the MySQL listening port to 3307, use the following environment variable:

<code>[mysql]
port=3307</code>

To change the data directory to

/opt/mysql/data, please use the following environment variables:

<code>[mysql]
datadir=/opt/mysql/data</code>

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