os-resource-classes/doc/source/install/common_configure.rst

2. Edit the /etc/os_resource_classes/os_resource_classes.conf file and complete the following actions:

   • In the [database] section, configure database access:

     [database]
     ...
     connection = mysql+pymysql://os_resource_classes:OS_RESOURCE_CLASSES_DBPASS@controller/os_resource_classes