Getting Started with Amazon AWS
AWS services or capabilities described in AWS documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon AWS.

Elastic Load Balancing

Elastic Load Balancing automatically distributes incoming application traffic across multiple Amazon EC2 instances. It enables you to achieve greater fault tolerance in your applications, seamlessly providing the amount of load balancing capacity needed in response to incoming application traffic. Elastic Load Balancing detects unhealthy instances within a pool and automatically reroutes traffic to healthy instances until the unhealthy instances have been restored.

Please note the following Amazon AWS implementation particulars, which are potentially relevant to all services in the Beijing and Ningxia Regions.

  • To use services in the Beijing and Ningxia Regions, you need an account and credentials specific to the Beijing and Ningxia Regions. Accounts and credentials for other AWS Regions will not work for services operating in the Beijing and Ningxia Regions. Likewise, accounts and credentials for the Beijing and Ningxia Regions will not work for other AWS Regions.

  • There are two Availability Zones in the Beijing Region.

  • There are three Availability Zones in the Ningxia Region.

  • In AWS Identity and Access Management (IAM), you can grant or deny a service access to resources using the Principal policy element. Service principal values vary by Region.

  • The domain for both the Beijing and Ningxia Regions is amazonaws.cn.

  • The endpoints for services in the China (Beijing) Region and the China (Ningxia) Region are different from other global endpoints.

    • The endpoint domain for both the Beijing and Ningxia Regions is amazonaws.com.cn.

    • For an endpoint in the China (Beijing) Region, the Region value should be cn-north-1.

    • For an endpoint in the China (Ningxia) Region, the Region value should be cn-northwest-1.

    • For example, the endpoint for Elastic Load Balancing in the Beijing Region is elasticloadbalancing.cn-north-1.amazonaws.com.cn.

    Endpoint syntax varies from service to service. For more information, see China (Beijing), China (Ningxia), and the service-specific documentation.

  • In the China Regions, the Amazon Resource Name (ARN) syntax includes a cn.

    For example: arn:aws-cn:iam::123456789012:user/division_abc/subdivision_xyz/Bob.

  • The EC2-Classic platform is not supported.

  • AWS Marketplace is not supported.

  • The free usage tier is not available in the China Regions.

Note

The AWS documentation might show code examples for endpoints and ARNs that are not specific for the Beijing and Ningxia Regions. When using examples, verify you are using the correct endpoints and ARNs for your Region.

Language Options

Chinese is the default language for Amazon AWS documentation. To switch to the English version of the page, use the language selection dropdown at the top of the page. Note: Selecting a different language will update the language cookie, making it the default language.

Chinese-language URL syntax:
http://docs.amazonaws.cn/aws/latest/userguide/introduction.html
English-language URL syntax:
http://docs.amazonaws.cn/en_us/aws/latest/userguide/introduction.html

Feature Availability and Implementation Differences

The Amazon AWS implementation of Elastic Load Balancing is unique in the following ways:

  • Because Amazon Route 53 is not available in the Beijing and Ningxia Regions, Elastic Load Balancing doesn't support Route 53 features. You can use CNAME to associate your custom domain name with your load balancer name.

  • Elastic Load Balancing does not support Internet Protocol version 6 (IPv6) in the Beijing and Ningxia Regions. Elastic Load Balancing provides a public DNS name for your load balancer that returns Internet Protocol version 4 (IPv4) records.

User Guides

Amazon AWS user guides are available in HTML and PDF, in both Chinese and English. API guides are available in HTML and PDF, in English only. Currently, the API guides are not available in the Beijing and Ningxia Regions. Links to API guides will take you to the global AWS site. Note that some features and functionality described in the guides may not be available in the current Amazon AWS release.

Command Line Interface (CLI)

To interact with Amazon Web Services from the command line, you can use the AWS Command Line Tools. For some services, a service-specific command line interface (CLI) is also available.

Note

Currently, the Elastic Load Balancing Command Line Tools must be downloaded from outside the China Regions.