Introduction

You can use Identity and Access Management (IAM) for fine-grained permissions management of your ServiceStage. If your Huawei Cloud account does not need individual IAM users, you can skip this section.

By default, new IAM users do not have permissions assigned. You need to add a user to one or more groups, and attach permissions policies or roles to these groups. Users inherit permissions from the groups to which they are added and can perform specified operations on cloud services based on the permissions.

You can grant users permissions using roles and policies. Roles are a type of coarse-grained authorization mechanism that defines permissions related to user responsibilities. Policies define API-based permissions for operations on specific resources under certain conditions, allowing for more fine-grained, secure access control of cloud resources.

Policy-based authorization is recommended if you want to allow or deny the access to an API.

Your account has all the permissions required to call all APIs, but IAM users under your account must be assigned the required permissions. The required permissions are determined by the actions supported by the API. Only users with the policies allowing for those actions can call the API successfully. For example, if an IAM user wants to query metrics using an API, the user must have been granted permissions that allow the servicestage:app:get action.

Supported Actions

ServiceStage provides system-defined policies that can be directly used in IAM. You can also create custom policies to supplement system-defined policies for more refined access control. Operations supported by policies are specific to APIs. The following are common concepts related to policies:

Permissions: Defined by actions in a custom policy.
APIs: REST APIs that can be called by a user who has been granted specific permissions.
Actions: specific operations that are allowed or denied.
IAM projects/Enterprise projects: the authorization scope of a custom policy. A custom policy can be applied to IAM projects or enterprise projects or both. Policies that contain actions for both IAM and enterprise projects can be used and applied for both IAM and Enterprise Management. Policies that contain actions only for IAM projects can be used and applied to IAM only. Administrators can check whether an action supports IAM projects or enterprise projects in the action list. For details about the differences between IAM and enterprise projects, see What Are the Differences Between IAM and Enterprise Management?

ServiceStage supports the following actions in custom policies:

**Table 1** ServiceStage actions
Permissions	APIs	Actions	IAM Projects	Enterprise Projects
Create an application	POST /v3/{project_id}/cas/applications	servicestage:app:create	√	√
Delete an application	DELETE /v3/{project_id}/cas/applications/{application_id}	servicestage:app:delete	√	√
Update an application	PUT /v3/{project_id}/cas/applications/{application_id}	servicestage:app:modify	√	√
Query applications	GET /v3/{project_id}/cas/applications	servicestage:app:list	√	√
Query application information	GET /v3/{project_id}/cas/applications/{application_id}	servicestage:app:get	√	√
Modify a project	-	servicestage:project:modify	√	√
Create a project	-	servicestage:project:create	√	√
Approve an application	-	servicestage:app:approve	√	√
View pipelines	-	servicestage:pipeline:list	√	√
Modify a build job	-	servicestage:assembling:modify	√	√
Approve a pipeline	-	servicestage:pipeline:review	√	√
Execute a pipeline	-	servicestage:pipeline:execute	√	√
View the build information	-	servicestage:project:get	√	√
Delete a build job	-	servicestage:assembling:delete	√	√
Delete a pipeline	-	servicestage:pipeline:delete	√	√
Delete a project	-	servicestage:project:delete	√	√
Modify a pipeline	-	servicestage:pipeline:modify	√	√
Create a build job	-	servicestage:assembling:create	√	√
View build jobs	-	servicestage:assembling:list	√	√
View the build information	-	servicestage:assembling:get	√	√
View projects	-	servicestage:project:list	√	√
View the pipeline information	-	servicestage:pipeline:get	√	√
Create a pipeline	-	servicestage:pipeline:create	√	√