AWS Vpc Cloudformation Stack

This template creates the following:

• a /24 vpc
• 3 * /26 private subnets
• 3 * /28 public subnets
• 3 * nat gateways
• an internet gateway
• an s3 endpoint
• the plumbing to connect the above

It can be used standalone:

Or as a nested stack:

"NetworkStack": {
  "Type": "AWS::CloudFormation::Stack",
   "Properties": {
     "Parameters": { "CidrBlockPrefix": "10.10.10" },
     "TemplateURL": "https://s3-us-west-2.amazonaws.com/jmuenster-public-templates/vpc-stack/template.json",
     "TimeoutInMinutes": "10"
  }
},

A few caveats:

• This doesn't work in regions with two availability zones, for obvious reasons
• Availability zone are mapped on a per account basis, so you won't always have an a, b and c AZ name. If this is the case, use the ZoneId parameters to override the default settings