A simple Terraform stack which builds a vanilla public-private VPC
It is useful for quickly spinning up isolated environment
Requires terraform >=0.13
- Edit environments/devtest/terraform.tfvars using the parameters detailed below. The default values will work as-is.
- Create an S3 bucket in AWS with a name matching the config in environments/devtest/main.tf or remove the S3 back end config
| Parameter name | Example value | Notes |
|---|---|---|
| project_name | projectx | components are named ${project_name}-${environment_name}- e.g. projectx-prodcution-pri-sub1 |
| environment_name | devtest | |
| enable_dns_hostnames | true | Enable DNS support as # https://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/vpc-dns.html |
| aws_region | eu-west-2 | https://docs.aws.amazon.com/general/latest/gr/rande.html |
| azs | ["eu-west-2a", "eu-west-2b", "eu-west-2c"] | list of availability zones to deploy subnets into |
| vpc_cidr | 10.10.0.0/20 | VPC CIDR |
| vpc_public_subnet_cidrs | ["10.10.0.0/24", "10.10.1.0/24", "10.10.2.0/24"] | List of CIDR's for the public subnets. Length must be the same as 'azs' above |
| vpc_private_subnet_cidrs | ["10.10.3.0/24", "10.10.4.0/24", "10.10.5.0/24"] | List of CIDR's for the private subnets. Length must be the same as 'azs' above |
| Component Type | Component Name (example) | Notes |
|---|---|---|
| aws_vpc | projectx-devtest | 10.10.0.0/20 enable_dns_hostnames true enable_dns_support true |
| aws_internet_gateway | projectx-devtest-igw | |
| aws_route_table | projectx-devtest-pub-rt | routes 0.0.0.0/0 to Inernet Gateway |
| aws_default_security_group | projectx-devtest-default-sg | |
| aws_subnet | projectx-devtest-pub-sub0 | 10.10.0.0/24 attaches to projectx-devtest-pub-rt |
| aws_subnet | projectx-devtest-pub-sub1 | 10.10.1.0/24 attaches to projectx-devtest-pub-rt |
| aws_subnet | projectx-devtest-pub-sub2 | 10.10.2.0/24 attaches to projectx-devtest-pub-rt |
| aws_subnet | projectx-devtest-pri-sub0 | 10.10.3.0/24 |
| aws_subnet | projectx-devtest-pri-sub1 | 10.10.4.0/24 |
| aws_subnet | projectx-devtest-pri-sub0 | 10.10.5.0/24 |
├── environments
│ └── devtest
│ ├── input.tf
│ ├── main.tf
│ └── terraform.tfvars
├── modules
│ └── vpc
│ ├── input.tf
│ ├── output.tf
│ └── vpc.tf
└── README.md