CAM-based Access Control

Last updated: 2021-03-18 16:38:45

    CSS supports permission control via CAM, where you can manage the CSS domains, configurations, and data of your account. You can create, manage, or terminate users or user groups and grant API access permissions to different users or user groups for the purpose of identity management and policy control.

    When using CAM, you can associate a policy with a user or user group to allow or forbid them to use specified resources to complete specified tasks.

    Basic Concepts

    • Root account: a registered Tencent Cloud account.
    • Sub-user: created and fully owned by a root account.
    • Collaborator: after an account is added as a collaborator of a root account, it becomes one of the sub-accounts of the root account and has the identity of the root account.
    • User group: created for users with the same functions and can be associated with a policy for centralized authorization management.

    For more information on the definitions and permissions, see CAM User Types.


    Step 1. Create a sub-user or user group

    One or more sub-users with specific roles and policies can be created under one root account. A sub-user has a specific ID and identity credential that can be used to log in to the Tencent Cloud console for configuration. It also has API access permissions. You can log in to the CAM console to create a sub-user, as shown below:

    For more information, see Creating a Custom Sub-user and Creating User Groups.

    Step 2. Add a policy to the sub-user or user group

    You can add policies and authorize users or user groups on the user or user group management and policy management pages. For more information, see Authorization Management.

    • Method 1: go to the User List or User Groups page, click Authorize/Associate Policy on the right of the created sub-user or user group, select the corresponding CSS policy, and click Confirm.

    • Method 2: go to the Policies page, click Associate Users/Groups on the right of the policy to be associated, select the created sub-user or user group, and click Confirm.

    Policies that can be associated include:

    1. Preset policy: click Policies on the left sidebar to go to the Policies page, where you can view all existing policies.
    2. Custom policy: go to the Policies page, click Create Custom Policy, and select Create by Policy Generator. For more information, see Custom Policy.

    If you need to grant a user the permission to use the CreateLiveCert API only for the specified domain, follow the steps below:

    1. Create a domain-level policy that allows access to the API and go to the Create by Policy Generator page.
    2. Enter relevant items, select Allow for Effect, Live Streaming Services (live) for Service, and DescribeLiveDomains for Action, and enter the domain to be authorized in the Resource text box. Below is the policy syntax:
      • ${ApiModule} is live.
      • ${Region} is ap-guangzhou.
      • uin is the account to be authorized. If this parameter is left empty, it indicates that the current account is authorized.
      • ${DomainName} is the domain name to be authorized.
        Example: click Add Statement > Next > Create Policy to generate the qcs::live:ap-guangzhou::domain/ policy. Once generated, the policy can be associated with users or user groups by using the aforementioned two methods.


    If you need to grant a sub-user the permission to use the API for all domains, enter * in the Resource text box.

    Step 3. Use a sub-account

    You can use a sub-account identity (sub-account ID and password created by the root account) to call the authorized APIs (such as the DescribeLiveDomains API) to get the corresponding CSS information (such as all domains under the account).