通过 CloudFormation 跨 AWS 账户创建 VPCPeeringConnection

Question

在 AWS 中，我正在尝试通过 CloudFormation 在不同账户中的两个 VPC 之间创建 VPC 对等连接。

我可以通过 UI 使用 4 个字段手动创建对等连接：

Name
Local VPC

Target Account ID
Target VPC ID

好像CLI also supports a target Account.

当尝试通过 CloudFormation 使用 AWS::EC2::VPCPeeringConnection object, the problem being that this object seems to only support 3 fields, Target Account not being one of them -

做同样的事情时，问题就来了

PeerVpcId
VpcId
Tags

我的代码导致

AttributeError: AWS::EC2::VPCPeeringConnection object does not support attribute PeerVpcOwner

How can I go about creating a VPCPeeringConnection to a VPC in another account via CloudFormation?

Answer 1

是的，您可以在两个 AWS 账户之间使用 cloudformation 配置 VPC 对等。

You can peer with a virtual private cloud (VPC) in another AWS account by using AWS::EC2::VPCPeeringConnection. This creates a networking connection between two VPCs that enables you to route traffic between them so they can communicate as if they were within the same network. A VPC peering connection can help facilitate data access and data transfer.

To establish a VPC peering connection, you need to authorize two separate AWS accounts within a single AWS CloudFormation stack.

来源：Walkthrough: Peer with an Amazon VPC in Another AWS Account

第 1 步：创建 VPC 和跨账户角色

{
  "AWSTemplateFormatVersion": "2010-09-09",
  "Description": "Create a VPC and an assumable role for cross account VPC peering.",
  "Parameters": {
    "PeerRequesterAccountId": {
      "Type": "String"
    }
  },
  "Resources": {
    "vpc": {
      "Type": "AWS::EC2::VPC",
      "Properties": {
        "CidrBlock": "10.1.0.0/16",
        "EnableDnsSupport": false,
        "EnableDnsHostnames": false,
        "InstanceTenancy": "default"
      }
    },
    "peerRole": {
      "Type": "AWS::IAM::Role",
      "Properties": {
        "AssumeRolePolicyDocument": {
          "Statement": [
            {
              "Principal": {
                "AWS": {
                  "Ref": "PeerRequesterAccountId"
                }
              },
              "Action": [
                "sts:AssumeRole"
              ],
              "Effect": "Allow"
            }
          ]
        },
        "Path": "/",
        "Policies": [
          {
            "PolicyName": "root",
            "PolicyDocument": {
              "Version": "2012-10-17",
              "Statement": [
                {
                  "Effect": "Allow",
                  "Action": "ec2:AcceptVpcPeeringConnection",
                  "Resource": "*"
                }
              ]
            }
          }
        ]
      }
    }
  },
  "Outputs": {
    "VPCId": {
      "Value": {
        "Ref": "vpc"
      }
    },
    "RoleARN": {
      "Value": {
        "Fn::GetAtt": [
          "peerRole",
          "Arn"
        ]
      }
    }
  }
}

第 2 步：创建包含 AWS::EC2::VPCPeeringConnection

的模板

{
  "AWSTemplateFormatVersion": "2010-09-09",
  "Description": "Create a VPC and a VPC Peering connection using the PeerRole to accept.",
  "Parameters": {
    "PeerVPCAccountId": {
      "Type": "String"
    },
    "PeerVPCId": {
      "Type": "String"
    },
    "PeerRoleArn": {
      "Type": "String"
    }
  },
  "Resources": {
    "vpc": {
      "Type": "AWS::EC2::VPC",
      "Properties": {
        "CidrBlock": "10.2.0.0/16",
        "EnableDnsSupport": false,
        "EnableDnsHostnames": false,
        "InstanceTenancy": "default"
      }
    },
    "vpcPeeringConnection": {
      "Type": "AWS::EC2::VPCPeeringConnection",
      "Properties": {
        "VpcId": {
          "Ref": "vpc"
        },
        "PeerVpcId": {
          "Ref": "PeerVPCId"
        },
        "PeerOwnerId": {
          "Ref": "PeerVPCAccountId"
        },
        "PeerRoleArn": {
          "Ref": "PeerRoleArn"
        }
      }
    }
  },
  "Outputs": {
    "VPCId": {
      "Value": {
        "Ref": "vpc"
      }
    },
    "VPCPeeringConnectionId": {
      "Value": {
        "Ref": "vpcPeeringConnection"
      }
    }
  }
}