Before you can use Simple Message Queue (formerly MNS), you must activate the service on the product page of SMQ. If your account is a RAM user, you must grant permissions to the RAM user before you can use the console or call API operations to manage SMQ resources, and send or receive messages by using SDKs. This topic describes how to activate SMQ and authorize RAM users to access SMQ.
Prerequisites
An Alibaba Cloud account is created.
Step 1: Activate SMQ
Go to the official website of Alibaba Cloud. In the top navigation bar, choose .
On the product page, click Get it Free.
Read MNS Terms of Service, select I have read and agree MNS Terms of Service, and then click activate Now.
The following message appears on the page: Congratulations. The service is activated.
Step 2: (Required for RAM users) Authorize RAM users to access SMQ
Log on to the RAM console as a RAM administrator.
In the left-side navigation pane, choose .
On the Users page, find the required RAM user, and click Add Permissions in the Actions column.
You can also select multiple RAM users and click Add Permissions in the lower part of the page to grant permissions to the RAM users at a time.
In the Grant Permission panel, grant permissions to the RAM user.
Configure the Resource Scope parameter.
Account: The authorization takes effect on the current Alibaba Cloud account.
ResourceGroup: The authorization takes effect on a specific resource group.
ImportantIf you select Resource Group for the Resource Scope parameter, make sure that the required cloud service supports resource groups. For more information, see Services that work with Resource Group. For more information about how to grant permissions on a resource group, see Use a resource group to grant a RAM user the permissions to manage a specific ECS instance.
Configure the Principal parameter.
The principal is the RAM user to which you want to grant permissions. The current RAM user is automatically selected.
Configure the Policy parameter.
A policy contains a set of permissions. Policies can be classified into system policies and custom policies. You can select multiple policies at a time.
System policies: policies that are created by Alibaba Cloud. You can use but cannot modify these policies. Version updates of the policies are maintained by Alibaba Cloud. For more information, see Services that work with RAM.
NoteThe system automatically identifies high-risk system policies, such as AdministratorAccess and AliyunRAMFullAccess. We recommend that you do not grant unnecessary permissions by attaching high-risk policies.
Custom policies: You can manage and update custom policies based on your business requirements. You can create, update, and delete custom policies. For more information, see Create a custom policy.
Click Grant permissions.
Click Close.
SMQ provides the following system policies. You can grant related permissions to the RAM user based on the permission scope.
Policy | Description |
AliyunMNSFullAccess | The permissions to manage Simple Message Queue (formerly MNS), which are equivalent to the permissions that the Alibaba Cloud account has. A RAM user to which this policy is attached can send and subscribe to all messages and use all the features of the console. |
AliyunMNSReadOnlyAccess | The read-only permissions on Simple Message Queue (formerly MNS). A RAM user to which this policy is attached can only read resource information in the console or by calling API operations. |
System policies cover a large permission scope. For example, after a RAM user is granted AliyunMNSFullAccess that represents full permissions, the RAM user can manage all SMQ resources. To grant fine-grained permissions, SMQ provides custom policies. For more information, see Permission policies and examples.
What to do next
You can click Console to create resources. For more information, see Get started with queue-based messaging.