authelia/docs/configuration/storage/mysql.md

layout	title	parent	grand_parent	nav_order
default	MySQL	Storage backends	Configuration	2

MySQL

storage:
  mysql:
    host: 127.0.0.1
    port: 3306
    database: authelia
    username: authelia
    # This secret can also be set using the env variables AUTHELIA_STORAGE_MYSQL_PASSWORD
    password: mypassword