SHOW AUTHENTICATION

Description

Displays the authentication information of the current user or all users in the current cluster. Each user has privilege to view their authentication information. Only users with the global GRANT privilege and the user_admin role can view the authentication information of all users or the authentication information of specified users.

Syntax

SHOW [ALL] AUTHENTICATION [FOR USERNAME]

Parameters

Parameter	Required	Description
ALL	No	If this keyword is specified, the authentication information of all users in the current cluster is returned. If this keyword is not specified, only the authentication information of the current user is returned.
USERNAME	No	If this parameter is specified, the authentication information of a specified user can be viewed. If this parameter is not specified, only the authentication information of the current user can be viewed.

Output

+---------------+----------+-------------+-------------------+
| UserIdentity  | Password | AuthPlugin  | UserForAuthPlugin |
+---------------+----------+-------------+-------------------+

Field	Description
UserIdentity	The user identity.
Password	Whether a password is used to log in to the StarRocks cluster. `Yes`: A password is used. `No`: No password is used.
AuthPlugin	The interface that is used for authentication. Valid values: `MYSQL_NATIVE_PASSWORD`, `AUTHENTICATION_LDAP_SIMPLE`, or `AUTHENTICATION_KERBEROS`. If no interface is used, `NULL` is returned.
UserForAuthPlugin	The name of the user using the LDAP or Kerberos authentication. If no authentication is used, `NULL` is returned.

Examples

Example 1: Display the authentication information of the current user.

SHOW AUTHENTICATION;
+--------------+----------+------------+-------------------+
| UserIdentity | Password | AuthPlugin | UserForAuthPlugin |
+--------------+----------+------------+-------------------+
| 'root'@'%'   | No       | NULL       | NULL              |
+--------------+----------+------------+-------------------+

Example 2: Display the authentication information of all users in the current cluster.

SHOW ALL AUTHENTICATION;
+---------------+----------+-------------------------+-------------------+
| UserIdentity  | Password | AuthPlugin              | UserForAuthPlugin |
+---------------+----------+-------------------------+-------------------+
| 'root'@'%'    | Yes      | NULL                    | NULL              |
| 'chelsea'@'%' | No       | AUTHENTICATION_KERBEROS | HADOOP.COM        |
+---------------+----------+-------------------------+-------------------+

Example 3: Display the authentication information of a specified user.

SHOW AUTHENTICATION FOR root;
+--------------+----------+------------+-------------------+
| UserIdentity | Password | AuthPlugin | UserForAuthPlugin |
+--------------+----------+------------+-------------------+
| 'root'@'%'   | Yes      | NULL       | NULL              |
+--------------+----------+------------+-------------------+