Configuring a VPC Endpoint for Communication Across VPCs

Scenarios

VPCEP enables you to privately connect your VPC to a VPC endpoint service (a cloud service or your private service) in another VPC, providing higher access efficiency and networking security compared with EIPs.

This section describes how to invoke APIs described in Creating a VPC Endpoint Service and Creating a VPC Endpoint to connect a VPC endpoint to a VPC endpoint service. For details, see Calling APIs.

The token obtained from IAM is valid for only 24 hours. If you want to use one token for authentication, you can cache it to avoid frequently calling the IAM API.

Creating a VPC Endpoint Service

The following is an example request of creating an interface VPC endpoint service for an ECS:

Before creating a VPC endpoint service, obtain necessary information such as values of parameters vpc_id and port_id. For details, see Creating a VPC Endpoint Service.

{ 
  "port_id": "4189d3c2-8882-4871-a3c2-d380272eed88",
  "vpc_id": "4189d3c2-8882-4871-a3c2-d380272eed80",
  "approval_enabled":false,
  "service_type":"interface",
  "server_type":"VM",
  "ports":
           [
             {
               "client_port":8080,
               "server_port":80,
               "protocol":"TCP"
             },
             { 
               "client_port":8081,
               "server_port":80,
               "protocol":"TCP"
             }
            ]
} 

• port_id: indicates the ID for identifying the backend service of a VPC endpoint service. For example, when you create a VPC endpoint service for an ECS, set this parameter to the NIC ID of the ECS's IP address.
• vpc_id: indicates the ID of the VPC where the backend resource is located.
• approval_enabled: indicates whether approval is required when a VPC endpoint connects to a VPC endpoint service. For example, if this parameter is set to false, no approval is required.
• service_type: indicates the type of the VPC endpoint service. For example, if this parameter is set to interface, the created VPC endpoint service is of the interface type.
• server_type: indicates the type of the backend resource. For example, if this parameter is set to VM, the backend resource is an ECS.
• ports.client_port: indicates the port provided by the VPC endpoint, allowing you to access the VPC endpoint service.
• ports.server_port: indicates the port provided by the backend resource to provide services.
• ports.protocol: indicates the protocol used for the port mapping.

Creating a VPC Endpoint

The following is an example request for creating a VPC endpoint, and creating a private domain name is supported.

Before creating a VPC endpoint, obtain necessary information, such as values of parameters vpc_id and subnet_id and the VPC endpoint service ID returned in the previous step. For details, see Creating a VPC Endpoint.

{ 
  "subnet_id": "4189d3c2-8882-4871-a3c2-d380272eed81",
  "vpc_id": "4189d3c2-8882-4871-a3c2-d380272eed82",
  "endpoint_service_id":"4189d3c2-8882-4871-a3c2-d380272eed83",
  "enable_dns":true
} 

• subnet_id: indicates the ID of the subnet where the VPC endpoint is created.
• vpc_id: indicates the ID of the VPC where the VPC endpoint is created.
• endpoint_service_id: indicates the ID of the VPC endpoint service.
• enable_dns: indicates whether to create a private domain name for the VPC endpoint. For example, if this parameter is set to true, a private domain name is created for the VPC endpoint.

After the VPC endpoint is created, ECSs in the VPC where the VPC endpoint is located can access VPC endpoint service 4189d3c2-8882-4871-a3c2-d380272eed83 using this endpoint.