Building Microservices with Go

VPC module

The VPC module creates our private network inside AWS; we do not want to or need to expose the NATS server to the outside world, so we can create a private network that only allows the resources attached to that network to access it, as shown in the following code:

module "vpc" { 
  source = "./vpc" 
 
  namespace = "bog-chapter11" 
} 

The source attribute is the location of the module; Terraform supports the following sources:

• Local file paths
• GitHub
• Bitbucket
• Generic Git and Mercurial repositories
• HTTP URLs
• S3 buckets

Following the source attribute, we can configure custom attributes, which correspond to the variables in the module. Variables are required placeholders for a module; when they are not present, Terraform complains when ...