Terraform : Infrastructure as code

Using terraform to create infrastrucutre on AWS using code. In this code, we are trying to create a below items:

VPC
Subnet inside VPC
Internet gateway associated with VPC
Route Table inside VPC with a route that directs internet-bound traffic to the internet gateway
Route table association with our subnet to make it a public subnet
Security group inside VPC
Key pair used for SSH access
EC2 instance inside our public subnet with an associated security group and generated a key pair

Using terraform we are able to make a immutable infrastructure which can be destroyed and created using single command.

Commands used:

terraform init : Initialize a Terraform working directory

terraform plan : Generate and show an execution plan

terraform apply : Builds or changes infrastructure

terraform destroy : Destroy Terraform-managed infrastructure

Variables are read from variables.tf file. If not specified in that file, parameters are read from following places :

Command line flags
File named terraform.tfvars, if name is something else can be provided using command line flag
Environment variables
UI input (only supports String variables)

MiteshSharma/TerraformVpcInstance