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• --keyring-migration-to-component 

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Indicates that a key migration is from a keyring plugin to a keyring component. This option makes it possible to migrate keys from any keyring plugin to any keyring component, which facilitates transitioning a MySQL installation from keyring plugins to keyring components. 

For key migration from one keyring component to another, use the mysql_migrate_keyring utility. Migration from a keyring component to a keyring plugin is not supported. See Section 6.4.4.13, “Migrating Keys Between Keyring Keystores” . 

• --keyring-migration-user= user_name 

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The user name of the MySQL account used for connecting to the running server that is currently using one of the key migration keystores. See Section 6.4.4.13, “Migrating Keys Between Keyring Keystores” . 

## 6.4.4.18 Keyring System Variables 

MySQL Keyring plugins support the following system variables. Use them to configure keyring plugin operation. These variables are unavailable unless the appropriate keyring plugin is installed (see Section 6.4.4.3, “Keyring Plugin Installation” ). 

• keyring_aws_cmk_id 

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The customer master key (CMK) ID obtained from the AWS KMS server and used by the keyring_aws plugin. This variable is unavailable unless that plugin is installed. 

This variable is mandatory. If not specified, keyring_aws  initialization fails. 

• keyring_aws_conf_file 

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