tf-multi-region-deploy-public

Allows to organise centralised management in different regions using global vars and region- or project-specific options.

Prerequisites

• Install terraform: https://learn.hashicorp.com/terraform/getting-started/install.html
• Create ~/.aws/config

[default]
region=us-east-1
output=json

• Create ~/.aws/credentials (you can get them from AWS admin)

[default]
aws_access_key_id = XXXXXXXXXXXXXXXX
aws_secret_access_key = XXXXXXXXXXXX

• Create key pair(s) in target regions https://docs.aws.amazon.com/ground-station/latest/ug/create-ec2-ssh-key-pair.html or upload your own

Structure

/ - root folder
/main.tf - defines regions modules and passes global variables to them
/main_vars.tf - defines global variables
terraform.tf - you can use it for remote terraform state in S3 bucket or simply delete and use local storage\

terraform {
  backend "s3" {
  encrypt = true
  bucket = "your-s3-bucket-name"                    # REQUIRED # - # Set your bucket name
  region = "us-east-1"                              # REQUIRED # - # Speficy bucket region
  key = "your_project_name/terraform.tfstate"       # REQUIRED # - # You can specify particular path in your bucket if want to host there several Terraform projects
  }
}

/region_name/ - module with region definitions
/region_name/region_name.tf - defines project modules in tihs region and passes global- and region-specific variables to them
/region_name/region_name_vars.tf - region vars assembled with global vars

# Set here your region name, vpc id in this region and a key pair associated with it

  vars = {
      # Specify region and target VPC
      region         = "us-east-1"                  # REQUIRED #
      vpc_id         = "your_vpc_id"                # REQUIRED # - # Set id of VPC used in this region
      public_keys = {
        "main"       = "key_pair_name"              # REQUIRED # - # Put the name of a key pair used in this region
      }
  }

/region_name/project_name/ - module with project definitions in this region
/region_name/project_name/*.tf - sets deploment options for your resources
/region_name/project_name/project_name_vars.tf - consumes region vars and gets all the subnets available to this region