KAS

Terraform Code for VPC Design

The Terraform resources will consists of following structure

├── main.tf                   // The primary entrypoint for terraform resources.
├── vars.tf                   // It contain the declarations for variables.
├── output.tf                 // It contain the declarations for outputs.
├── terraform.tfvars          // The file to pass the terraform variables values.

1. VPC - creating VPC in AWS
2. networks - creating AWS Public and Private SUbnet
3. s_groups - creating network security group, setting desired security rules and associating them to subnets
4. bastion - creating virtual machines to connect to Private Instances
5. S3 - creating S3 bucket in AWS instance

All the stacks are placed in the modules folder and the variable are stored under terraform.tfvars

To run the code you need to append the variables in the terraform.tfvars

Each module consists minimum two files: main.tf, vars.tf

resourcegroup and networking modules consists of one extra file named output.tf

Deployment

Steps

Step 0 terraform init

used to initialize a working directory containing Terraform configuration files

Step 1 terraform plan

used to create an execution plan

Step 2 terraform validate

validates the configuration files in a directory, referring only to the configuration and not accessing any remote services such as remote state, provider APIs, etc

Step 3 terraform apply -var-file=terraform.tfvars

used to apply the changes required to reach the desired state of the configuration