MySQL 8.0 Reference Manual Including MySQL NDB Cluster 8.0 Clone System Variables

This section describes the system variables that control operation of the clone plugin. If values specified at startup are incorrect, the clone plugin may fail to initialize properly and the server does not load it. In this case, the server may also produce error messages for other clone settings because it will not recognize them.

Each system variable has a default value. System variables can be set at server startup using options on the command line or in an option file. They can be changed dynamically at runtime using the SET statement, which enables you to modify operation of the server without having to stop and restart it.

Setting a global system variable runtime value normally requires the SYSTEM_VARIABLES_ADMIN privilege (or the deprecated SUPER privilege). For more information, see Section, “System Variable Privileges”.

Clone variables are configured on the recipient MySQL server instance where the cloning operation is executed.