Permissions and Supported Actions

This chapter describes fine-grained permissions management for your Kafka instances. If your Huawei ID does not need individual IAM users, then you may skip over this chapter.

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 by 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.

For details about DMS for Kafka system policies, see Permissions Management.

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

An account has all of the permissions required to call all APIs, but IAM users must be assigned the required permissions. The permissions required for calling an API are determined by the actions supported by the API. Only users who have been granted permissions allowing the actions can call the API successfully. For example, if an IAM user wants to query Kafka instances using an API, the user must have been granted permissions that allow the dms:instance:create action.

Supported Actions

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

Permission: a statement in a policy that allows or denies certain operations.
APIs: REST APIs that can be called by a user who has been granted specific permissions.
Action: Specific operations that are allowed or denied.
IAM projects or enterprise projects: 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 take effect for both IAM and Enterprise Management. Policies that only contain actions for IAM projects can be used and only take effect for IAM. 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?

DMS for Kafka supports the following actions in custom policies:

Lifecycle management actions, including actions supported by Kafka instance lifecycle management APIs, such as the APIs for creating an instance, querying the instance list, modifying instance information, and batch restarting or deleting instances.
Instance management actions, including actions supported by Kafka instance management APIs, such as the APIs for resetting passwords and configuring automatic topic creation.
Smart Connect actions, including actions supported by Smart Connect APIs, such as the APIs for enabling or disabling Smart Connect, creating a Smart Connect task.
Specification modification management action, supported by the specification modification management API for modifying instance specifications.
Topic management actions, including actions supported by topic management APIs, such as the APIs for creating, querying, and modifying topics.
User management actions, including actions supported by user management APIs, such as the APIs for creating users, querying users, and configuring user permissions.
Message query actions, including actions supported by message query APIs, such as the API for querying messages.
Background task management actions, including actions supported by background task management APIs, such as the APIs for querying the background task list of an instance and querying a specified background task.
Tag management actions, including actions supported by tag management APIs, such as the APIs for querying instance tags and project tags.

Lifecycle Management

**Table 1** Lifecycle management
Permission	API	Action	IAM (Project)	Enterprise (Enterprise Project)
Creating an instance	POST /v2/{engine}/{project_id}/instances	dms:instance:create	√	√
Querying all instances	GET /v2/{project_id}/instances	dms:instance:list	√	√
Querying an instance	GET /v2/{project_id}/instances/{instance_id}	dms:instance:get	√	√
Deleting an instance	DELETE /v2/{project_id}/instances/{instance_id}	dms:instance:delete	√	√
Modifying instance information	PUT /v2/{project_id}/instances/{instance_id}	dms:instance:modify	√	√
Batch restarting or deleting instances	POST /v2/{project_id}/instances/action	Restart: dms:instance:modifyStatus Delete: dms:instance:delete	√	√

Instance Management

**Table 2** Instance management
Permission	API	Action	IAM (Project)	Enterprise (Enterprise Project)
Resetting a password	POST /v2/{project_id}/instances/{instance_id}/password	dms:instance:resetAuthInfo	√	√
Resetting the Kafka Manager password	PUT /v2/{project_id}/instances/{instance_id}/kafka-manager-password	dms:instance:resetAuthInfo	√	√
Restarting Kafka Manager	PUT /v2/{project_id}/instances/{instance_id}/restart-kafka-manager	dms:instance:modifyStatus	√	√
Configuring automatic topic creation	POST /v2/{project_id}/instances/{instance_id}/autotopic	dms:instance:modify	√	√
Modifying the private IP address for cross-VPC access	POST /v2/{project_id}/instances/{instance_id}/crossvpc/modify	dms:instance:modify	√	√
Resetting consumer group offset to the specified position	POST /v2/{project_id}/instances/{instance_id}/management/groups/{group}/reset-message-offset	dms:instance:modify	√	√

Smart Connect

**Table 3** Smart Connect
Permission	API	Action	IAM Projects	Enterprise Projects
Enabling Smart Connect	POST /v2/{project_id}/instances/{instance_id}/connector	dms:instance:connector	√	√
Disabling Smart Connect	POST /v2/{project_id}/kafka/instances/{instance_id}/delete-connector	dms:instance:connector	√	√
Creating a Smart Connect task	POST /v2/{project_id}/instances/{instance_id}/connector/tasks	dms:instance:createConnectorSinkTask	√	√
Listing Smart Connect tasks	GET /v2/{project_id}/instances/{instance_id}/connector/tasks	dms:instance:listConnectorSinkTask	√	√
Querying Smart Connect task details	GET /v2/{project_id}/instances/{instance_id}/connector/tasks/{task_id}	dms:instance:getConnectorSinkTask	√	√
Deleting Smart Connect tasks	DELETE /v2/{project_id}/instances/{instance_id}/connector/tasks/{task_id}	dms:instance:deleteConnectorSinkTask	√	√
Pausing Smart Connect tasks	PUT /v2/{project_id}/instances/{instance_id}/connector/tasks/{task_id}/pause	dms:instance:updateConnectorTask	√	√
Restarting Smart Connect tasks	PUT /v2/{project_id}/instances/{instance_id}/connector/tasks/{task_id}/resume	dms:instance:updateConnectorTask	√	√
Starting a Smart Connect task or restarting a paused or running Smart Connect task	PUT /v2/{project_id}/kafka/instances/{instance_id}/connector/tasks/{task_id}/restart	dms:instance:updateConnectorTask	√	√

Specification Modification Management

**Table 4** Specification modification management
Permission	API	Action	IAM Projects	Enterprise Projects
Modifying instance specifications	POST /v2/{engine}/{project_id}/instances/{instance_id}/extend	dms:instance:scale	√	√

Topic Management

**Table 5** Topic management
Permission	API	Action	IAM Projects	Enterprise Projects
Creating a topic in a Kafka instance	POST /v2/{project_id}/instances/{instance_id}/topics	dms:instance:modify	√	√
Querying a topic in a Kafka instance	GET /v2/{project_id}/instances/{instance_id}/topics	dms:instance:get	√	√
Modifying topics of a Kafka instance	PUT /v2/{project_id}/instances/{instance_id}/topics	dms:instance:modify	√	√
Deleting topics in a Kafka instance in batches	POST /v2/{project_id}/instances/{instance_id}/topics/delete	dms:instance:modify	√	√

User Management

**Table 6** User management
Permission	API	Action	IAM Projects	Enterprise Projects
Querying the user list	GET /v2/{project_id}/instances/{instance_id}/users	dms:instance:get	√	√
Creating a user	POST /v2/{project_id}/instances/{instance_id}/users	dms:instance:modify	√	√
Deleting users in batches	PUT /v2/{project_id}/instances/{instance_id}/users	dms:instance:modify	√	√
Resetting a user password	PUT /v2/{project_id}/instances/{instance_id}/users/{user_name}	dms:instance:get	√	√
Querying user permissions	GET /v1/{project_id}/instances/{instance_id}/topics/{topic_name}/accesspolicy	dms:instance:get	√	√
Granting user permissions	POST /v1/{project_id}/instances/{instance_id}/topics/accesspolicy	dms:instance:modify	√	√

Message Query

**Table 7** Message query
Permission	API	Action	IAM Projects	Enterprise Projects
Querying messages	GET /v2/{project_id}/instances/{instance_id}/messages	dms:instance:get	√	√

Background Task Management

**Table 8** Background task management
Permission	API	Action	IAM Projects	Enterprise Projects
Listing background tasks	GET /v2/{project_id}/instances/{instance_id}/tasks	dms:instance:getBackgroundTask	√	√
Querying a background task	GET /v2/{project_id}/instances/{instance_id}/tasks/{task_id}	dms:instance:getBackgroundTask	√	√
Deleting a background task	DELETE /v2/{project_id}/instances/{instance_id}/tasks/{task_id}	dms:instance:deleteBackgroundTask	√	√

Tag Management

**Table 9** Tag management
Permission	API	Action	IAM Projects	Enterprise Projects
Batch adding or deleting tags	POST /v2/{project_id}/kafka/{instance_id}/tags/action	dms:instance:modify	√	√
Listing tags of an instance	GET /v2/{project_id}/kafka/{instance_id}/tags	dms:instance:get	√	√
Listing tags of a project	GET /v2/{project_id}/kafka/tags	dms:instance:get	√	√