NDB Cluster Management API

The NDB Cluster Management API (MGM API) is a C API that is used to:

• Start/stop database nodes (DB nodes)
• Start/stop NDB Cluster backups
• Control the NDB Cluster log
• Other administrative tasks

Concepts

Each MGM API function needs a management server handle (of type Mgm_C_Api::NdbMgmHandle). This handle is initally is created by calling the function ndb_mgm_create_handle().

A function can return:

1. An integer value. If it returns -1 then this indicates an error, and then
2. A pointer value. If it returns NULL then check the latest error. If it didn't return NULL, then a "something" is returned. This "something" has to be free:ed by the user of the MGM API.

If there are an error, then the get latest error functions can be used to check what the error was.

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