This cloud formation template will deploy a webapp on the following infrastructure:

• VPC
• s3 read-only IAM role
• Internet gateway
• NAT gateways
• Public and Private subnets in 2 availability zones
• Launch configuration for: Auto-scaling group, EC2 instances
• Elastic Load Balancer with Health Checks
• Bastion host (Development environment only)

• EnvType: Prod or Dev
• KeyName: EC2 Key-pair. (required when EnvType is Dev)
• TrustedHosts: source ip address permitted to SSH to BastionHost (required when EnvType is Dev)
• InstanceType: EC2 instance type to deploy
• VPCSubnet: CIDR network for your VPC
• FleetSize: Number of EC2 instances to deploy

• Run the following aws-cli command:

aws cloudformation create-stack --stack-name <udagram> --parameters ParameterKey=KeyName,ParameterValue=<my-ec2-key> ParameterKey=TrustedHosts,ParameterValue=<ip-address/32> --capabilities CAPABILITY_IAM --template-body <file///path/to/udagram.yml>

• Run the following aws-cli command:

aws cloudformation delete-stack --stack-name <udagram>