How to configure environment variables in mysql

Methods to configure environment variables in MySQL are: Modify the my.cnf file: Add the variable_name=value line in the [mysqld] section. Add command line flag: Use the --variable_name=value flag when starting MySQL. Use the set command: Execute the set variable_name=value command in the MySQL console. Using an ENV file: Load variables from an environment file using the export variable_name=value syntax.

How to configure environment variables in MySQL

Step 1: Edit my.cnf

Edit the MySQL configuration file my.cnf. The file is usually located at /etc/mysql/my.cnf or /etc/my.cnf.

Step 2: Add variable line

In the [mysqld] section, add the following line:

<code>[mysqld]
...
variable_name=value
...</code>

Replace variable_name with the name of the environment variable , replace value with the value of the variable.

Step 3: Save and Restart MySQL

Save my.cnf and restart the MySQL service to apply the changes:

<code>sudo service mysql restart</code>

Example

For example, to set test_variable to my_value, add the following line to my.cnf:

<code>[mysqld]
...
test_variable=my_value
...</code>

Other methods

In addition to using my.cnf, you can also configure environment variables using the following methods:

• ##Command line flags: Add # when starting MySQL ##--variable_name=value flag.
set command:
• Execute the set variable_name=value command in the MySQL console.
ENV files:
• Load variables from environment files that use the export variable_name=value syntax.

Verification

To verify that the environment variables are configured correctly, execute the following command in the MySQL console:

<code>show variables like 'variable_name';</code>

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