To create an Web Gateway and affiliate it with an EC2 occasion utilizing AWS CloudFormation, you’ll be able to observe these steps:

Step 1: Create a CloudFormation template

Create a brand new YAML or JSON file with a .yaml or .json extension (e.g., template.yaml), and add the next contents:

AWSTemplateFormatVersion: "2010-09-09"
Sources:
  MyVPC:
    Sort: AWS::EC2::VPC
    Properties:
      CidrBlock: 10.0.0.0/16  # Exchange together with your desired VPC CIDR block

  MyInternetGateway:
    Sort: AWS::EC2::InternetGateway

  MyVPCGatewayAttachment:
    Sort: AWS::EC2::VPCGatewayAttachment
    Properties:
      VpcId: !Ref MyVPC
      InternetGatewayId: !Ref MyInternetGateway

  MySubnet:
    Sort: AWS::EC2::Subnet
    Properties:
      VpcId: !Ref MyVPC
      CidrBlock: 10.0.0.0/24  # Exchange together with your desired subnet CIDR block
      AvailabilityZone: us-west-2a  # Exchange together with your desired availability zone

  MyRouteTable:
    Sort: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref MyVPC

  MyDefaultRoute:
    Sort: AWS::EC2::Route
    DependsOn: MyVPCGatewayAttachment
    Properties:
      RouteTableId: !Ref MyRouteTable
      DestinationCidrBlock: 0.0.0.0/0
      GatewayId: !Ref MyInternetGateway

  MyEC2Instance:
    Sort: AWS::EC2::Occasion
    Properties:
      ImageId: ami-0123456789abcdef0  # Exchange together with your desired AMI ID
      InstanceType: t2.micro  # Exchange together with your desired occasion sort
      SubnetId: !Ref MySubnet

Ensure that to interchange the placeholder values (CidrBlock, AvailabilityZone, ImageId, and so on.) together with your desired values.

Step 2: Create a CloudFormation stack

1. Open the AWS Administration Console and navigate to the CloudFormation service.
2. Click on on “Create stack” or “Create a brand new stack” to start out the stack creation course of.
3. Select “Add a template file” and choose the CloudFormation template file you created in Step 1.
4. Proceed via the wizard, offering a stack title and any further configuration choices as wanted.
5. Assessment the stack particulars and click on on “Create stack” to start out the stack creation course of.

CloudFormation will now create the web gateway, VPC, subnet, route desk, and EC2 occasion in accordance with the template.

As soon as the stack creation course of completes, your infrastructure can be provisioned, and the EC2 occasion can be related to the web gateway.

It’s essential to have a fundamental understanding of CloudFormation and AWS ideas when working with CloudFormation templates. Moreover, guarantee that you’ve applicable permissions and a correctly configured AWS account to create the required sources.