Resource Access Management:Use RAM to limit the period of time in which users are allowed to access Alibaba Cloud resources

Step 1: Create a custom policy

1. Log on to the RAM console as a RAM user who has administrative rights.

2. In the left-side navigation pane, choose Permissions > Policies.

3. On the Policies page, click Create Policy.

   

4. On the Create Policy page, click the JSON tab.

   

5. Enter the policy document.

   The following policy indicates that the authorized RAM user can access Alibaba Cloud ECS only before 17:00 on August 12, 2019 (UTC+8). In this case, the acs:CurrentTime parameter in the Condition element is set to 2019-08-12T17:00:00+08:00.

   {
     "Statement": [
       {
         "Action": "ecs:*",
         "Effect": "Allow",
         "Resource": "*",
         "Condition": {
             "DateLessThan": {
                 "acs:CurrentTime": "2019-08-12T17:00:00+08:00"
             }
         }
       }
     ],
     "Version": "1"
   }

   Note

   The Condition element applies only to the actions specified for the current policy. You can change the value 2019-08-12T17:00:00+08:00 based on your business requirements.

6. Click Optional advanced optimize in the upper part. In the Optional advanced optimize message, click Perform to optimize the policy.

   The system performs the following operations during the advanced optimization:

   • Split resources or conditions that are incompatible with actions.

   • Narrow down resources.

   • Deduplicate or merge policy statements.

7. On the Create Policy page, click OK.

8. In the Create Policy dialog box, configure the Name and Description parameters and click OK.

Step 2: Create a RAM user

Step 3: Attach the policy to the RAM user

Attach the policy that you created in Step 1 to the RAM user that you created in Step 2.

1. Log on to the RAM console as a RAM administrator.

2. In the left-side navigation pane, choose Identities > Users.

3. On the Users page, find the required RAM user, and click Add Permissions in the Actions column.

   

   You can also select multiple RAM users and click Add Permissions in the lower part of the page to grant permissions to the RAM users at a time.

4. In the Grant Permission panel, grant permissions to the RAM user.

   1. Configure the Resource Scope parameter.

      • Account: The authorization takes effect on the current Alibaba Cloud account.

      • ResourceGroup: The authorization takes effect on a specific resource group.

        Important

        If you select Resource Group for the Resource Scope parameter, make sure that the required cloud service supports resource groups. For more information, see Services that work with Resource Group. For more information about how to grant permissions on a resource group, see Use a resource group to grant a RAM user the permissions to manage a specific ECS instance.

   2. Configure the Principal parameter.

      The principal is the RAM user to which you want to grant permissions. The current RAM user is automatically selected.

   3. Configure the Policy parameter.

      A policy contains a set of permissions. Policies can be classified into system policies and custom policies. You can select multiple policies at a time.

      • System policies: policies that are created by Alibaba Cloud. You can use but cannot modify these policies. Version updates of the policies are maintained by Alibaba Cloud. For more information, see Services that work with RAM.

        Note

        The system automatically identifies high-risk system policies, such as AdministratorAccess and AliyunRAMFullAccess. We recommend that you do not grant unnecessary permissions by attaching high-risk policies.

      • Custom policies: You can manage and update custom policies based on your business requirements. You can create, update, and delete custom policies. For more information, see Create a custom policy.

   4. Click Grant permissions.

5. Click Close.