Permissions

If you need to assign different permissions to employees in your enterprise, Identity and Access Management (IAM) is a good choice for fine-grained permissions management. IAM provides identity authentication, permissions management, and access control, helping you to securely access your Huawei Cloud resources.

With IAM, you can create IAM users and assign permissions to control their access to RAM resources. If your account does not need individual IAM users for permissions management, you can skip this section.

IAM is a free service. You pay only for the resources in your account. For more information about IAM, see IAM Service Overview.

RAM Permissions

New IAM users do not have any permissions assigned by default. You need to first add them to one or more groups and attach policies or roles to these groups. The users then inherit permissions from the groups and can perform specified operations on cloud services based on the permissions they have been assigned.

RAM is a global service deployed for all regions. When you set the authorization scope to Global services, users have permission to access RAM in all regions.

You can grant permissions by using roles and policies.

Roles: A coarse-grained authorization strategy provided by IAM to assign permissions based on users' job responsibilities. Only a limited number of service-level roles are available for authorization. Huawei Cloud services depend on each other. When you grant permissions using roles, you also need to attach dependent roles. Roles are not ideal for fine-grained authorization and least privilege access.
Policies: A fine-grained authorization strategy that defines permissions required to perform operations on specific cloud resources under certain conditions. This type of authorization is more flexible and is ideal for least privilege access.

Table 1 lists all the system-defined permissions for RAM.

**Table 1** System-defined permissions for RAM
Permission	Description
RAM FullAccess	Full permissions for RAM.
RAM ReadOnlyAccess	Read-only permissions for RAM.
RAM ResourceShareParticipantAccess	Permissions for accepting or reject a resource sharing invitation.

Table 2 lists the common operations supported by system-defined permissions for RAM.

**Table 2** Common operations supported by system-defined permissions
Operation	RAM FullAccess	RAM ReadOnlyAccess	RAM ResourceShareParticipantAccess
Listing RAM managed permissions	Supported	Supported	Not supported
Getting the details about RAM managed permissions	Supported	Supported	Not supported
Creating a resource share	Supported	Not supported	Not supported
Searching for resource shares	Supported	Supported	Supported
Updating a resource share	Supported	Not supported	Not supported
Deleting a resource share	Supported	Not supported	Not supported
Associating principals and resources with a resource share	Supported	Not supported	Not supported
Disassociating principals and resources from a resource share	Supported	Not supported	Not supported
Searching for associated principals and resources	Supported	Supported	Not supported
Attaching or replacing RAM managed permissions	Supported	Not supported	Not supported
Detaching RAM managed permissions	Supported	Not supported	Not supported
Listing attached RAM managed permissions	Supported	Supported	Not supported
Searching for shared resources	Supported	Supported	Supported
Searching for principals	Supported	Supported	Supported
Accepting a resource sharing invitation	Supported	Not supported	Supported
Rejecting a resource sharing invitation	Supported	Not supported	Supported
Searching for a resource sharing invitation	Supported	Supported	Supported
Enabling sharing with Organizations	Supported	Not supported	Not supported
Disabling sharing with Organizations	Supported	Not supported	Not supported
Checking whether sharing with Organizations is enabled	Supported	Supported	Not supported