- Open up your text editor and create a new CloudFormation template. We're going to start by adding a few Parameters as follows:
AWSTemplateFormatVersion: '2010-09-09' Parameters: AmiId: Type: AWS::EC2::AMI::Id Description: AMI ID to launch instances from VPCID: Type: AWS::EC2::VPC::Id Description: VPC where load balancer and instance will launch SubnetIDs: Type: List<AWS::EC2::Subnet::Id> Description: Subnets where load balancer and instance will launch (pick at least 2)
- Let's take a look at a security group we'll apply to a public load balancer:
ExampleELBSecurityGroup: Type: AWS::EC2::SecurityGroup Properties: GroupDescription: Security Group for example ELB SecurityGroupIngress: - IpProtocol: tcp ...