Help Center/ MapReduce Service/ User Guide/ Managing Clusters/ Managing MRS Cluster Users/ Managing MRS Cluster User Groups
Updated on 2024-09-23 GMT+08:00
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Managing MRS Cluster User Groups

Administrators can create and manage different user groups based on service scenarios on Manager. A user group is bound to a role to obtain operation permissions. After a user is added to a user group, the user can obtain the operation permissions of the user group. A user group can be used to classify users and manage multiple users.

The Manager of an MRS 3.x or later cluster supports a maximum of 5000 user groups (including built-in user groups).

The Manager of an MRS 2.x or earlier cluster supports supports a maximum of 100 user groups (including built-in user groups).

Prerequisites

  • You have learned service requirements and created roles required by service scenarios.
  • You have logged in to Manager.

Creating a User Group

For MRS 3.x and later versions:

  1. Choose System > Permission > User Group.
  2. Above the user group list, click Create User Group.

    Figure 1 Creating a user group

  3. Set Group Name and Description.

    The group name contains 1 to 64 characters, including case-insensitive letters, digits, underscores (_), hyphens (-), and spaces. It cannot be the same as an existing user group name in the system.

  4. In the Role area, click Add to select a role and add it.

    • For components (except HDFS and Yarn) for which Ranger authorization has been enabled, the permissions of non-default roles on Manager do not take effect. You need to configure Ranger policies to assign permissions to user groups.
    • If the resource requests of HDFS and Yarn are beyond the Ranger policies, the ACL rules of the components still take effect.

  5. In the User area, click Add to select a user and add it.
  6. Click OK.

    The user group is created.

For MRS 2.x and earlier:

  1. On MRS Manager, click System.
  2. In the Permission area, click Manage User Group.
  3. Above the user group list, click Create User Group.
  4. Set Group Name and Description.

    Group Name is mandatory and contains 3 to 20 characters. Only digits, letters, and underscores (_) are allowed. Description is optional.

  5. In Role, click Select and Add Role to select and add specified roles.

    If you do not add the roles, the user group you are creating now does not have the permission to use MRS clusters.

  6. Click OK.

Managing User Groups

  1. Log in to Manager.
  2. Go to the user group management page.

    • For MRS 3.x and later versions, choose System > Permission > User Group.
    • For MRS 2.x and earlier versions, Click System. In the Permission area, click Manage User Group.

  3. In the user group list, perform the following operations on a user group as you need.

    • Viewing user group information: By default, all user groups are displayed in the user group list. You can click the arrow on the left of a user group name to view details about the user group, including the user quantity, specific users, and bound roles of the user group.
    • Modifying user group information: Locate the row that contains the user group to be modified and click Modify.
    • Exporting user group information: Click Export All to export all user group information at a time in TXT or CSV format.

      The user group information contains the user group name, description, user list, and role list.

      Exporting user group information is supported in MRS 3.x or later only.

    • Deleting a user group: Locate the row that contains the target user group and click Delete. To delete multiple user groups in batches, select the target user groups and click Delete above the user group list. A user group that contains users cannot be deleted. To delete such a user group, delete all its users by modifying the user group first.