error while spinning ec2 instance with key using Terraform script - amazon-ec2

Question

I want to provision an ec2 instance with a key and run a script inside an ec2-instance.
filename instance.tf
resource "aws_key_pair" "mykey" {
key_name = "terraform-nverginia"
public_key = "${file ("${var.PATH_TO_PUBLIC_KEY}")}"
}
resource "aws_instance" "demo" {
ami = "${lookup (var.AMIS, var.AWS_REGION)}"
instance_type = "t2.micro"
key_name = "${aws_key_pair.mykey.key_name}"
tags = {
Name = "T-instance"
}
provisioner "file" { // copying file from local to remote server
source = "deployscript.sh"
destination = "/home/ec2-user/deploy.sh" //check if both the file names are same or not.
}
provisioner "remote-exec" { // executing script to do some deployment in the server.
inline = [
"chmod +x /home/ec2-user/deploy.sh",
"sudo /home/ec2-user/deploy.sh"
]
}
connection {
type = "ssh" // To connect to the instance
user = "${var.INSTANCE_USERNAME}"
host = "122.171.19.4" // My personal laptop's ip address
private_key = "${file ("${var.PATH_TO_PRIVATE_KEY}")}"
}
} // end of resource aws_instance
//-------------------------------------------------
filename: provider.tf
terraform {
required_providers {
aws = {
source = "hashicorp/aws"
version = ">= 4.9.0"
}
}
}
filename vars.tf
variable "AWS_ACCESS_KEY" {}
variable "AWS_SECRET_KEY" {}
variable "AWS_REGION"{
default = "us-east-1"
}
variable "AMIS" {
type = map
default = {
us-east-1 = "ami-0574da719dca65348"
us-east-2 = "ami-0a606d8395a538502"
}
}
variable "PATH_TO_PRIVATE_KEY" {
default = "terraform-nverginia"
}
variable "PATH_TO_PUBLIC_KEY"{
default = "mykey.pub"
}
variable "INSTANCE_USERNAME"{
default = "ec2-user"
}
filename = terraform.tfvars
AWS_ACCESS_KEY = "<Access key>"
AWS_SECRET_KEY = "<Secret key>"
Error:
PS D:\\Rajiv\\DevOps-Practice\\Terraform\\demo-2\> terraform plan
╷
│ Error: Invalid provider configuration
│
│ Provider "registry.terraform.io/hashicorp/aws" requires explicit configuration. Add a provider block to the root module and configure the
│ provider's required arguments as described in the provider documentation.
│ Error: configuring Terraform AWS Provider: error validating provider credentials: error calling sts:GetCallerIdentity: operation error STS: G
etCallerIdentity, https response error StatusCode: 403, RequestID: 594b6dab-e087-4678-8c57-63a65c3d3d41, api error InvalidClientTokenId: The se
curity token included in the request is invalid.
│
│ with provider\["registry.terraform.io/hashicorp/aws"\],
│ on \<empty\> line 0:
│ (source code not available)
I am expecting a ec2 instance to be created and the script should be run.

Answer 1

Providers are plugins which helps Terraform to interact with specific cloud services. You must declare and install cloud provider before you want to use the cloud service via Terraform. Refer to this link https://developer.hashicorp.com/terraform/language/providers. In your code try adding AWS provider.
terraform {
required_providers {
aws = {
source = "hashicorp/aws"
version = "4.48.0"
}
}
}
provider "aws" {
# Configuration options
}
Then run terraform init to install the provider.