mcedit /etc/orthanc/mysql.json

cat /etc/orthanc/mysql.json 
{
  /**
   * Configuration to use MySQL or MariaDB instead of the default
   * SQLite back-end of Orthanc. You will have to install the
   * "orthanc-mysql" package to take advantage of this feature.
   **/
  "MySQL" : {
    // Enable the use of MySQL to store the Orthanc index?
    "EnableIndex" : true,
    
    // Enable the use of MySQL to store the DICOM files?
    "EnableStorage" : true,
    
    // Parameters of the MySLQ database
    "Host" : "localhost",
    "Port" : 3306,
    "Database" : "orthanc",
    "Username" : "orthanc",
    "UnixSocket" : "/var/run/mysqld/mysqld.sock",
    "Password" : "dDE4dkULEYrbBZxc",
    
    // Optional: Disable the locking of the MySQL database
    "Lock" : true
  }
}