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MySQL 5.7 Reference Manual  /  ...  /  ALTER INSTANCE Syntax

14.1.4 ALTER INSTANCE Syntax

ALTER INSTANCE ROTATE INNODB MASTER KEY

ALTER INSTANCE, introduced in MySQL 5.7.11, defines actions applicable to a MySQL server instance. Using ALTER INSTANCE requires the SUPER privilege.

The ALTER INSTANCE ROTATE INNODB MASTER KEY statement is used to rotate the master encryption key used for InnoDB tablespace encryption. A keyring plugin must be loaded to use this statement. For information about keyring plugins, see Section 7.5.4, “The MySQL Keyring”.

ALTER INSTANCE ROTATE INNODB MASTER KEY supports concurrent DML. However, it cannot be run concurrently with CREATE TABLE ... ENCRYPTION or ALTER TABLE ... ENCRYPTION operations, and locks are taken to prevent conflicts that could arise from concurrent execution of these statements. If one of the conflicting statements is running, it must complete before another can proceed.

ALTER INSTANCE actions are written to the binary log so that they can be executed on replicated servers.

For additional ALTER INSTANCE ROTATE INNODB MASTER KEY usage information, see Section 15.7.10, “InnoDB Tablespace Encryption”. For information about keyring plugins, see Section 7.5.4, “The MySQL Keyring”.


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