I need support to add the AWS variables in Terraform - terraform-provider-aws

Question

Need support to add following variables to my terraform code so that user can input the details and it can create the desired resources in AWS. I don't know how to do that your kind support will be highly appreciated.
`
resource "aws_instance" "ec2" {
ami = "ami-0fe0b2cf0e1f25c8a"
instance_type = "t2.micro"
vpc_security_group_ids = [var.security_group_id]
subnet_id = var.subnet_id
key_name = var.key
}
variable "security_group_id" {
type = string
description = "Enter the SG"
}
variable "key" {
description = "Enter the Kaypair"
}
variable "subnet_id" {
type = string
description = "Enter the Subnet"
}
`
How can i add following AWS variables
Size, AZ, HDD, Port
I have tried the following code.But due to lack of knowledge i dont know how to add the required variables e.g there are resources + data source.
resource "aws_instance" "ec2" {
ami = "ami-0fe0b2cf0e1f25c8a"
instance_type = "t2.micro"
vpc_security_group_ids = [var.security_group_id]
subnet_id = var.subnet_id
key_name = var.key
}
variable "security_group_id" {
type = string
description = "Enter the SG"
}
variable "key" {
description = "Enter the Kaypair"
}
variable "subnet_id" {
type = string
description = "Enter the Subnet"
}

Answer 1

#Malik, hopefully, this will help you and give you a bit of an idea how to initiate your config.
https://github.com/ishuar/terraform-eks/blob/main/examples/private_cluster/eks-ec2-private-jump-host.tf#L253
this only includes basic configuration for EC2 Instances.
If you are looking for a module then its better to look into: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance
unfortunately, there are multiple ways of defining the resources that you have to add to your Ec2 instance but the very standard and basic way would be
resource "aws_instance" "ec2" {
count = var.instance_count
ami = "ami-0fe0b2cf0e1f25c8a"
instance_type = "t2.micro"
vpc_security_group_ids = [var.security_group_id]
subnet_id = var.subnet_id
key_name = var.key
tags = { Name = "${var.name}-${count.index + 1}" }
## For the root volume attached to Ec2 instance
root_block_device {
delete_on_termination = var.delete_on_termination
encrypted = var.encrypted
iops = var.iops
volume_size = var.volume_size
volume_type = var.volume_type
throughput = var.throughput
}
## For the additional EBS block device attached to Ec2 instance
ebs_block_device {
delete_on_termination = var.delete_on_termination
device_name = var.device_name
encrypted = var.encrypted
iops = var.iops
kms_key_id = var.kms_key_id
snapshot_id = var.snapshot_id
volume_size = var.volume_size
volume_type = var.volume_type
throughput = var.throughput
}
}
Regarding ports I assume you mean the ports to access, those can be controlled via security groups.
I hope this info somewhat helps even though it is not exactly a module of complete aws_instance resource somewhat you can have an idea.