Configuring Kafka ACL Users

Kafka instances with ciphertext access enabled support access control list (ACL) for topics. You can isolate users by granting them different permissions in a topic.

This section describes how to create users, reset the password, and delete users with ciphertext access enabled. For details about how to grant topic permissions for users, see Configuring Kafka Topic Permissions.

The maximum number of users that can be created for a Kafka instance is 20 or 500. Check the console for the actual limit.

There are two ways to create a user on the console. Accordingly, there are two ways to reset the user's password:

• Initial user: The user set when ciphertext access is enabled for the first time. If you forget your password, reset it by referring to Resetting the Password (for the Initial User).

• Non-initial users: Users created on the Users page. If you forget your password, reset it by referring to Resetting the User Password (for Non-initial Users).

Prerequisites

• Ciphertext access has been enabled for the Kafka instance.

• Kafka users can be configured only for Kafka instances in the Running state.

Constraints

• This function is unavailable for single-node instances.

• Resetting a user password will interrupt services. Change the user password in the client configuration file or code as soon as possible.

Creating a User

1. Log in to the console.

2. Click in the upper left corner to select a region.

   Note

   Select the region where your Kafka instance is located.

3. Click Service List and choose Application > Distributed Message Service. The Kafka instance list is displayed.

4. Click the desired instance to go to the instance details page.

5. On the Users page, click Create User.

6. Set user information by referring to Configuring Kafka ACL Users.

   Table 1 User creation parameters

   Parameter	Description
   Username	The username used to access a Kafka instance, you can customize a name that complies with the rules: 4-64 characters; starts with a letter; can contain only letters, digits, hyphens (-), and underscores (_).
   Password	The password used to access a Kafka instance. A password must meet the following requirements: Contains 8 to 32 characters. Contains at least three of the following character types: uppercase letters, lowercase letters, digits, and special characters `~! @#$%^&*()-_=+\|[{}];:'",<.>? and spaces, and cannot start with a hyphen (-). Cannot be the username spelled forward or backward.

7. Click OK.

   After the user is created, grant permissions to the user by referring to Configuring Kafka Topic Permissions.

Resetting the Password (for the Initial User)

1. Log in to the console.

2. Click in the upper left corner to select a region.

   Note

   Select the region where your Kafka instance is located.

3. Click Service List and choose Application > Distributed Message Service. The Kafka instance list is displayed.

4. Reset the password for the initial user in either of the following ways.

   • Choose More > Reset Kafka Password in the row containing the desired Kafka instance.

   • Click the desired Kafka instance to view its details. Choose More > Reset Kafka Password in the upper left corner.

   • Click the desired Kafka instance to view its details. On the Basic Information page, click Reset Password next to Username in the Connection section.

   • Click the desired Kafka instance to view its details. On the Users page, click Reset Password in the row containing the desired user.

5. Enter and confirm a new password, and click OK.

   • If the password is successfully reset, a success message is displayed.

   • If the password fails to be reset, a failure message is displayed. In this case, reset the password again. If you still fail to reset the password after multiple attempts, contact customer service.

   Note

   The system will display a success message only after the password is successfully reset on all brokers.

Resetting the User Password (for Non-initial Users)

1. Log in to the console.

2. Click in the upper left corner to select a region.

   Note

   Select the region where your Kafka instance is located.

3. Click Service List and choose Application > Distributed Message Service. The Kafka instance list is displayed.

4. Click the desired Kafka instance to view its details.

5. On the Users page, click Reset Password in the row containing the desired user.

6. Enter and confirm a new password, and click OK.

   • If the password is successfully reset, a success message is displayed.

   • If the password fails to be reset, a failure message is displayed. In this case, reset the password again. If you still fail to reset the password after multiple attempts, contact customer service.

   Note

   The system will display a success message only after the password is successfully reset on all brokers.

Deleting a User

1. Log in to the console.

2. Click in the upper left corner to select a region.

   Note

   Select the region where your Kafka instance is located.

3. Click Service List and choose Application > Distributed Message Service. The Kafka instance list is displayed.

4. Click the desired Kafka instance to view its details.

5. In the navigation pane, choose Users.

6. Delete a user in either of the following ways:

   • In the row containing the desired user, click Delete.

   • Select one or more users and click Delete above the list.

   Note

   The initial user set when ciphertext access is enabled for the first time cannot be deleted.

7. In the displayed Delete User dialog box, click OK to delete the user.

last updated: 2024-12-10 15:16 UTC - commit: ef506946dc65402760f4eb57bfda5ee36d4df62f