How Can I Find My Active MySQL Configuration File?

How to Identify the Active MySQL Configuration File

Determining the configuration file currently utilized by your MySQL instance is crucial for maintaining and troubleshooting database performance. To ascertain this information, employ the following steps:

Step 1: Locate the MySQL Executable

Utilize the which command to locate the path to the MySQL executable, typically named mysqld.

$ which mysqld

Step 2: Leverage the Verbose Help Output

Run the MySQL executable with the --verbose --help flags to generate a verbose help output. Within this output, locate the section labeled "Default options."

$ /usr/sbin/mysqld --verbose --help | grep -A 1 "Default options"

Step 3: Identify Configuration File Order

The verbose help output will display the default configuration files in the order they are read by MySQL. Typically, the configuration files are loaded in the following order:

• /etc/mysql/my.cnf
• ~/.my.cnf
• /usr/etc/my.cnf

The active configuration file will be the first file listed in this order.

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