Access Control (RAM) is a service provided by Alibaba Cloud to manage user identities and resource access permissions.You can use RAM to prevent RAM users from sharing the AccessKey pairs of your Alibaba Cloud account. You can also use RAM to grant minimum permissions to RAM users. RAM used Permission Policy to describe the specific content for authorization.

This topic describes the elements, such as Action, Resource, and Condition, that are defined by Linkvisual .You can use the elements to create policies in RAM. The code (RamCode) in RAM that is used to indicate Linkvisual 's RAM code (RamCode) is . You can grant permissions on 。

General structure of a policy

Policies can be stored as JSON files. The following code provides an example on the general structure of a policy:View Details...

Action

The following table lists Linkvisual operations that can be specified in the Actionelement of a policy statement. You can attach the policy to a RAM user or a RAM role so that the RAM user or the RAM role can perform a group of operations. You cannot authorize the RAM user or the RAM role to perform a specific operation in Linkvisual . You can authorize the RAM user or the RAM role to perform only a group of operations at the service level. The following list describes the columns in the table:

  • Operation: the value that you can use in the Action element to specify the operation on a resource.
  • Access level: the access level of each operation. The levels are read, write, and list.
  • Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the group of operations. You cannot grant permissions on this Alibaba Cloud service at the resource level. Therefore, you must grant permissions on all resources in this Alibaba Cloud service.
  • Condition key: the condition keys that are defined by the Alibaba Cloud service. The Condition key column does not list the common condition keys that are defined by Alibaba Cloud. For more information about the common condition keys, see Generic Condition Keyword。
  • Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.
ActionsAccess levelResource type
No Data
Resource

Linkvisual , you cannot specify an ARN in the Resource element in a policy statement.If you want to authorize a RAM user or a RAM role to access Linkvisual , you cannot specify an ARN in the "Resource": "*"

Condition

Linkvisual does not define service-specific condition keys. For more information about common condition keys that are defined by Alibaba Cloud, see Generic Condition Keyword。

What to do next

You can create a custom policy and attach the policy to a RAM user, RAM user group, or RAM role. For more information, see the following topics: