If the Elastic Compute Service (ECS) instance in a virtual private cloud (VPC) cannot access the Internet, you cannot call API operations on the ECS instance over the Internet. This topic describes how to call API operations over a VPC by modifying the endpoint field.
Background
VPC endpoints use public service addresses. If the ECS instance in your VPC cannot access the Internet, you cannot call API operations by using Alibaba Cloud CLI or SDKs. For more information about VPC endpoints, see Call VPC APIs.
| Alibaba Cloud region | Region ID | Endpoint |
|---|---|---|
| China (Hangzhou) | cn-hangzhou | vpc-vpc.cn-hangzhou.aliyuncs.com |
| China (Shanghai) | cn-shanghai | vpc-vpc.cn-shanghai.aliyuncs.com |
| China (Qingdao) | cn-qingdao | vpc-vpc.cn-qingdao.aliyuncs.com |
| China (Beijing) | cn-beijing | vpc-vpc.cn-beijing.aliyuncs.com |
| China (Zhangjiakou-Beijing Winter Olympic) | cn-zhangjiakou | vpc-vpc.cn-zhangjiakou.aliyuncs.com |
| China (Hohhot) | cn-huhehaote | vpc-vpc.cn-huhehaote.aliyuncs.com |
| China (Ulanqab) | cn-wulanchabu | vpc-vpc.cn-wulanchabu.aliyuncs.com |
| China (Shenzhen) | cn-shenzhen | vpc-vpc.cn-shenzhen.aliyuncs.com |
| China (Heyuan) | cn-heyuan | vpc-vpc.cn-heyuan.aliyuncs.com |
| China (Chengdu) | cn-chengdu | vpc-vpc.cn-chengdu.aliyuncs.com |
| China (Hong Kong) | cn-hongkong | vpc-vpc.cn-hongkong.aliyuncs.com |
| Singapore (Singapore) | ap-southeast-1 | vpc-vpc.ap-southeast-1.aliyuncs.com |
| Australia (Sydney) | ap-southeast-2 | vpc-vpc.ap-southeast-2.aliyuncs.com |
| Malaysia (Kuala Lumpur) | ap-southeast-3 | vpc-vpc.ap-southeast-3.aliyuncs.com |
| Indonesia (Jakarta) | ap-southeast-5 | vpc-vpc.ap-southeast-5.aliyuncs.com |
| Japan (Tokyo) | ap-northeast-1 | vpc-vpc.ap-northeast-1.aliyuncs.com |
| Germany (Frankfurt) | eu-central-1 | vpc-vpc.eu-central-1.aliyuncs.com |
| UK (London) | eu-west-1 | vpc-vpc.eu-west-1.aliyuncs.com |
| US (Silicon Valley) | us-west-1 | vpc-vpc.us-west-1.aliyuncs.com |
| US (Virginia) | us-east-1 | vpc-vpc.us-east-1.aliyuncs.com |
| India (Mumbai) | ap-south-1 | vpc-vpc.ap-south-1.aliyuncs.com |
| UAE (Dubai) | me-east-1 | vpc-vpc.me-east-1.aliyuncs.com |
Call an operation over a VPC by using Alibaba Cloud CLI
aliyun vpc DescribeRegions --endpoint vpc-vpc.cn-hangzhou.aliyuncs.comCall an operation over a VPC by using Alibaba Cloud SDKs
To call an operation over a VPC by using Alibaba Cloud SDKs, set the Endpoint field to the corresponding endpoint of a specific region. Example in Java:
DefaultProfile profile = DefaultProfile.getProfile("cn-hangzhou", "<AccessKeyId>", "<AccessKeySecret>");
IAcsClient client = new DefaultAcsClient(profile);
// The configuration takes effect globally. where:
// <product> specifies the service name and Vpc is used in this example. <Endpoint> specifies the endpoint of the specific region.
DefaultProfile.addEndpoint("cn-hangzhou", "vpc", "vpc-vpc.cn-hangzhou.aliyuncs.com");
// The configuration takes effect only for this request. For example, when you call the DescribeRegions operation:
DescribeRegionsRequest regionsRequest = new DescribeRegionsRequest();
// If you set productNetwork, you do not need to set SysEndpoint.
regionsRequest.setSysEndpoint("<Endpoint>");
// Configure the network. Valid values of productNetwork: vpc and public.
// Set the parameter to vpc when you call the operation over a VPC. Set the parameter to public when you call the operation over the Internet. Default value: public.
regionsRequest.productNetwork = "vpc";
DescribeRegionsResponse regionsResponse = client.getAcsResponse(regionsRequest);