8.4.4.16 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 8.4.4.3, “Keyring Plugin Installation”).

• keyring_aws_cmk_id

  Command-Line Format	--keyring-aws-cmk-id=value
  System Variable	keyring_aws_cmk_id
  Scope	Global
  Dynamic	Yes
  SET_VAR Hint Applies	No
  Type	String

  The KMS key 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

  Command-Line Format	--keyring-aws-conf-file=file_name
  System Variable	keyring_aws_conf_file
  Scope	Global
  Dynamic	No
  SET_VAR Hint Applies	No
  Type	File name
  Default Value	platform specific

  The location of the configuration file for the keyring_aws plugin. This variable is unavailable unless that plugin is installed.

  At plugin startup, keyring_aws reads the AWS secret access key ID and key from the configuration file. For the keyring_aws plugin to start successfully, the configuration file must exist and contain valid secret access key information, initialized as described in Section 8.4.4.7, “Using the keyring_aws Amazon Web Services Keyring Plugin”.

  The default file name is keyring_aws_conf, located in the default keyring file directory.

• keyring_aws_data_file

  Command-Line Format	--keyring-aws-data-file
  System Variable	keyring_aws_data_file
  Scope	Global
  Dynamic	No
  SET_VAR Hint Applies	No
  Type	File name
  Default Value	platform specific

  The location of the storage file for the keyring_aws plugin. This variable is unavailable unless that plugin is installed.

  At plugin startup, if the value assigned to keyring_aws_data_file specifies a file that does not exist, the keyring_aws plugin attempts to create it (as well as its parent directory, if necessary). If the file does exist, keyring_aws reads any encrypted keys contained in the file into its in-memory cache. keyring_aws does not cache unencrypted keys in memory.

  The default file name is keyring_aws_data, located in the default keyring file directory.

• keyring_aws_region

  Command-Line Format	--keyring-aws-region=value
  System Variable	keyring_aws_region
  Scope	Global
  Dynamic	Yes
  SET_VAR Hint Applies	No
  Type	Enumeration
  Default Value	us-east-1
  Valid Values	af-south-1 ap-east-1 ap-northeast-1 ap-northeast-2 ap-northeast-3 ap-south-1 ap-southeast-1 ap-southeast-2 ca-central-1 cn-north-1 cn-northwest-1 eu-central-1 eu-north-1 eu-south-1 eu-west-1 eu-west-2 eu-west-3 me-south-1 sa-east-1 us-east-1 us-east-2 us-gov-east-1 us-iso-east-1 us-iso-west-1 us-isob-east-1 us-west-1 us-west-2

  The AWS region for the keyring_aws plugin. This variable is unavailable unless that plugin is installed.

• keyring_hashicorp_auth_path

  Command-Line Format	--keyring-hashicorp-auth-path=value
  System Variable	keyring_hashicorp_auth_path
  Scope	Global
  Dynamic	Yes
  SET_VAR Hint Applies	No
  Type	String
  Default Value	/v1/auth/approle/login

  The authentication path where AppRole authentication is enabled within the HashiCorp Vault server, for use by the keyring_hashicorp plugin. This variable is unavailable unless that plugin is installed.

• keyring_hashicorp_ca_path

  Command-Line Format	--keyring-hashicorp-ca-path=file_name
  System Variable	keyring_hashicorp_ca_path
  Scope	Global
  Dynamic	Yes
  SET_VAR Hint Applies	No
  Type	File name
  Default Value	empty string

  The absolute path name of a local file accessible to the MySQL server that contains a properly formatted TLS certificate authority for use by the keyring_hashicorp plugin. This variable is unavailable unless that plugin is installed.

  If this variable is not set, the keyring_hashicorp plugin opens an HTTPS connection without using server certificate verification, and trusts any certificate delivered by the HashiCorp Vault server. For this to be safe, it must be assumed that the Vault server is not malicious and that no man-in-the-middle attack is possible. If those assumptions are invalid, set keyring_hashicorp_ca_path to the path of a trusted CA certificate. (For example, for the instructions in Certificate and Key Preparation, this is the company.crt file.)

• keyring_hashicorp_caching

  Command-Line Format	--keyring-hashicorp-caching[={OFF|ON}]
  System Variable	keyring_hashicorp_caching
  Scope	Global
  Dynamic	Yes
  SET_VAR Hint Applies	No
  Type	Boolean
  Default Value	OFF

  Whether to enable the optional in-memory key cache used by the keyring_hashicorp plugin to cache keys from the HashiCorp Vault server. This variable is unavailable unless that plugin is installed. If the cache is enabled, the plugin populates it during initialization. Otherwise, the plugin populates only the key list during initialization.

  Enabling the cache is a compromise: It improves performance, but maintains a copy of sensitive key information in memory, which may be undesirable for security purposes.

• keyring_hashicorp_commit_auth_path

  System Variable	keyring_hashicorp_commit_auth_path
  Scope	Global
  Dynamic	No
  SET_VAR Hint Applies	No
  Type	String

  This variable is associated with keyring_hashicorp_auth_path, from which it takes its value during keyring_hashicorp plugin initialization. This variable is unavailable unless that plugin is installed. It reflects the “committed” value actually used for plugin operation if initialization succeeds. For additional information, see keyring_hashicorp Configuration.

• keyring_hashicorp_commit_ca_path

  System Variable	keyring_hashicorp_commit_ca_path
  Scope	Global
  Dynamic	No
  SET_VAR Hint Applies	No
  Type	String

  This variable is associated with keyring_hashicorp_ca_path, from which it takes its value during keyring_hashicorp plugin initialization. This variable is unavailable unless that plugin is installed. It reflects the “committed” value actually used for plugin operation if initialization succeeds. For additional information, see keyring_hashicorp Configuration.

• keyring_hashicorp_commit_caching

  System Variable	keyring_hashicorp_commit_caching
  Scope	Global
  Dynamic	No
  SET_VAR Hint Applies	No
  Type	String

  This variable is associated with keyring_hashicorp_caching, from which it takes its value during keyring_hashicorp plugin initialization. This variable is unavailable unless that plugin is installed. It reflects the “committed” value actually used for plugin operation if initialization succeeds. For additional information, see keyring_hashicorp Configuration.

• keyring_hashicorp_commit_role_id

  System Variable	keyring_hashicorp_commit_role_id
  Scope	Global
  Dynamic	No
  SET_VAR Hint Applies	No
  Type	String

  This variable is associated with keyring_hashicorp_role_id, from which it takes its value during keyring_hashicorp plugin initialization. This variable is unavailable unless that plugin is installed. It reflects the “committed” value actually used for plugin operation if initialization succeeds. For additional information, see keyring_hashicorp Configuration.

• keyring_hashicorp_commit_server_url

  System Variable	keyring_hashicorp_commit_server_url
  Scope	Global
  Dynamic	No
  SET_VAR Hint Applies	No
  Type	String

  This variable is associated with keyring_hashicorp_server_url, from which it takes its value during keyring_hashicorp plugin initialization. This variable is unavailable unless that plugin is installed. It reflects the “committed” value actually used for plugin operation if initialization succeeds. For additional information, see keyring_hashicorp Configuration.

• keyring_hashicorp_commit_store_path

  System Variable	keyring_hashicorp_commit_store_path
  Scope	Global
  Dynamic	No
  SET_VAR Hint Applies	No
  Type	String

  This variable is associated with keyring_hashicorp_store_path, from which it takes its value during keyring_hashicorp plugin initialization. This variable is unavailable unless that plugin is installed. It reflects the “committed” value actually used for plugin operation if initialization succeeds. For additional information, see keyring_hashicorp Configuration.

• keyring_hashicorp_role_id

  Command-Line Format	--keyring-hashicorp-role-id=value
  System Variable	keyring_hashicorp_role_id
  Scope	Global
  Dynamic	Yes
  SET_VAR Hint Applies	No
  Type	String
  Default Value	empty string

  The HashiCorp Vault AppRole authentication role ID, for use by the keyring_hashicorp plugin. This variable is unavailable unless that plugin is installed. The value must be in UUID format.

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

• keyring_hashicorp_secret_id

  Command-Line Format	--keyring-hashicorp-secret-id=value
  System Variable	keyring_hashicorp_secret_id
  Scope	Global
  Dynamic	Yes
  SET_VAR Hint Applies	No
  Type	String
  Default Value	empty string

  The HashiCorp Vault AppRole authentication secret ID, for use by the keyring_hashicorp plugin. This variable is unavailable unless that plugin is installed. The value must be in UUID format.

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

  The value of this variable is sensitive, so its value is masked by * characters when displayed.

• keyring_hashicorp_server_url

  Command-Line Format	--keyring-hashicorp-server-url=value
  System Variable	keyring_hashicorp_server_url
  Scope	Global
  Dynamic	Yes
  SET_VAR Hint Applies	No
  Type	String
  Default Value	https://127.0.0.1:8200

  The HashiCorp Vault server URL, for use by the keyring_hashicorp plugin. This variable is unavailable unless that plugin is installed. The value must begin with https://.

• keyring_hashicorp_store_path

  Command-Line Format	--keyring-hashicorp-store-path=value
  System Variable	keyring_hashicorp_store_path
  Scope	Global
  Dynamic	Yes
  SET_VAR Hint Applies	No
  Type	String
  Default Value	empty string

  A store path within the HashiCorp Vault server that is writeable when appropriate AppRole credentials are provided by the keyring_hashicorp plugin. This variable is unavailable unless that plugin is installed. To specify the credentials, set the keyring_hashicorp_role_id and keyring_hashicorp_secret_id system variables (for example, as shown in keyring_hashicorp Configuration).

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

• keyring_okv_conf_dir

  Command-Line Format	--keyring-okv-conf-dir=dir_name
  System Variable	keyring_okv_conf_dir
  Scope	Global
  Dynamic	Yes
  SET_VAR Hint Applies	No
  Type	Directory name
  Default Value	empty string

  The path name of the directory that stores configuration information used by the keyring_okv plugin. This variable is unavailable unless that plugin is installed. The location should be a directory considered for use only by the keyring_okv plugin. For example, do not locate the directory under the data directory.

  The default keyring_okv_conf_dir value is empty. For the keyring_okv plugin to be able to access Oracle Key Vault, the value must be set to a directory that contains Oracle Key Vault configuration and SSL materials. For instructions on setting up this directory, see Section 8.4.4.6, “Using the keyring_okv KMIP Plugin”.

  The directory should have a restrictive mode and be accessible only to the account used to run the MySQL server. For example, on Unix and Unix-like systems, to use the /usr/local/mysql/mysql-keyring-okv directory, the following commands (executed as root) create the directory and set its mode and ownership:

  cd /usr/local/mysql
  mkdir mysql-keyring-okv
  chmod 750 mysql-keyring-okv
  chown mysql mysql-keyring-okv
  chgrp mysql mysql-keyring-okv

  If the value assigned to keyring_okv_conf_dir specifies a directory that does not exist, or that does not contain configuration information that enables a connection to Oracle Key Vault to be established, keyring_okv writes an error message to the error log. If an attempted runtime assignment to keyring_okv_conf_dir results in an error, the variable value and keyring operation remain unchanged.

• keyring_operations

  System Variable	keyring_operations
  Scope	Global
  Dynamic	Yes
  SET_VAR Hint Applies	No
  Type	Boolean
  Default Value	ON

  Whether keyring operations are enabled. This variable is used during key migration operations. See Section 8.4.4.11, “Migrating Keys Between Keyring Keystores”. The privileges required to modify this variable are ENCRYPTION_KEY_ADMIN in addition to either SYSTEM_VARIABLES_ADMIN or the deprecated SUPER privilege.