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MySQL 8.0 Reference Manual
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Excerpts from this Manual NDB File System Encryption Limitations

Transparent data encryption in NDB Cluster is subject to the following restrictions and limitations:

  • The file system password must be supplied to each individual data node.

  • File system password rotation requires an initial rolling restart of the data nodes; this must be performed manually, or by an application external to NDB).

  • For a cluster with only a single replica (NoOfReplicas = 1), a full backup and restore is required for file system password rotation.

  • Rotation of all data encryption keys requires an initial node restart.