Creating a User Group and Assigning Permissions

As an administrator, you can create user groups, and grant them permissions by attaching policies or roles. Users you add to the user groups inherit permissions of the policies or roles. IAM provides general permissions (such as administrator or read-only permissions) for each cloud service, which you can assign to user groups. Users in the groups can then use cloud services based on the assigned permissions. For details, see Assigning Permissions to an IAM User. For details about the system-defined permissions of all cloud services, see "Permissions".

Prerequisites

Before creating a user group, learn about the following:

Understand the basic concepts of permissions.
Know permissions provided by IAM.

Creating a User Group

Log in to the IAM console as the administrator.
On the IAM console, choose User Groups from the navigation pane, and click Create User Group in the upper right corner.
On the displayed page, enter a user group name.
Click OK.

You can create a maximum of 20 user groups. To create more user groups, increase the quota by referring to Quotas

Assigning Permissions to a User Group

To assign permissions to a user group, do as follows. To revoke permissions of a user group, see Revoking Permissions of a User Group.

In the user group list, click Authorize in the row that contains the created user group.
On the Authorize User Group page, select the permissions to be assigned to the user group and click Next.
If the system-defined policies do not meet your requirements, click Create Policy in the upper right to create custom policies. You can use them to supplement system-defined policies for refined permissions control. For details, see Creating a Custom Policy.

Specify the scope. The system automatically recommends an authorization scope for the permissions you selected. Table 1 describes all the authorization scopes provided by IAM.

**Table 1** Authorization scopes
Scope	Description
All resources	IAM users will be able to use all resources, including those in enterprise projects, region-specific projects, and global services under your account based on assigned permissions.
Enterprise projects	IAM users can use the resources in the enterprise projects you select based on the assigned permissions. This option is available only when Enterprise Project is enabled. For details about enterprise projects, see "Enterprise Management" in the Enterprise Management User Guide.
Region-specific projects	IAM users can use the resources in the region-specific projects you select based on the assigned permissions. If you have selected global service permissions and specified the scope as Region-specific projects, the global service permissions will be applied to all resources by default. The selected permissions for project-level services will be applied to the region-specific projects you select.
Global services	IAM users can use global services based on the assigned permissions. Global services are deployed with no physical regions specified. IAM users do not need to specify a region when accessing these services, such as Object Storage Service (OBS) and Content Delivery Network (CDN). If you have selected project-level service permissions and specified the scope as Global services, the project-level service permissions will be applied to all resources by default. The selected permissions for global services will still be applied to the global services you select.

Click OK.

If you add a user to multiple groups, the user will inherit all the permissions that have been assigned to these groups.

**Table 2** Common permissions
Category	Policy/Role Name	Description	Authorization Scope
General administration	FullAccess	Full permissions for services supporting policy-based access control.	All
Resource management	Tenant Administrator	Administrator permissions for all services except IAM.	All
Viewing resources	Tenant Guest	Read-only permissions for all resources.	All
IAM user management	Security Administrator	Administrator permissions for IAM.	Global services
Computing O&M	ECS FullAccess	Administrator permissions for ECS.	Region-specific projects
	CCE FullAccess	Administrator permissions for Cloud Container Instance (CCI).	Region-specific projects
	BMS FullAccess	Administrator permissions for Bare Metal Server (BMS).	Region-specific projects
	IMS FullAccess	Administrator permissions for Image Management Service (IMS).	Region-specific projects
	AutoScaling Admin	Administrator permissions for Auto Scaling (AS).	Region-specific projects
Network O&M	VPC FullAccess	Administrator permissions for Virtual Private Cloud (VPC).	Region-specific projects
Network O&M	ELB FullAccess	Administrator permissions for Elastic Load Balance (ELB).	Region-specific projects
Database O&M	RDS FullAccess	Administrator permissions for Relational Database Service (RDS).	Region-specific projects
	DDS FullAccess	Administrator permissions for Document Database Service (DDS).	Region-specific projects
	DDM FullAccess	Administrator permissions for Distributed Database Middleware (DDM).	Region-specific projects
Security O&M	Anti-DDoS Administrator	Administrator permissions for Anti-DDoS.	Region-specific projects
	WAF Administrator	Administrator permissions for Web Application Firewall (WAF).	Region-specific projects
	VSS Administrator	Administrator permissions for Vulnerability Scan Service (VSS).	Region-specific projects
	CGS FullAccess	Administrator permissions for Container Guard Service (CGS).	Region-specific projects
	KMS Administrator	Administrator permissions for Key Management Service (KMS), which has been renamed Data Encryption Workshop (DEW).	Region-specific projects