aws_instance.tf

#creating instance
#instance ami id
variable "ami_id" {
	#IMAGE NAME = Amazon Linux 2 AMI (HVM), SSD Volume Type
	default = "ami-0447a12f28fddb066"
}
#creating key pair and deleting when destroy command executed
resource "null_resource" "exec" {
	provisioner "local-exec" {
        command = "aws ec2 create-key-pair --key-name MyKeyPair --query 'KeyMaterial' --output text > /root/HybridCloud/Terraform/MyKeyPair.pem --profile rbterra"
  }
  provisioner "local-exec" {
    when    = "destroy"
    command = "aws ec2 delete-key-pair --key-name MyKeyPair  --profile rbterra && rm -f MyKeyPair"
	on_failure = "continue"
  }
}
#reading data of key pair file
data "local_file" "key_file" {
	depends_on =[null_resource.exec]
    filename = "/root/HybridCloud/Terraform/MyKeyPair.pem"
}
#launching instance
resource "aws_instance" "webos" {
  ami           = var.ami_id
  instance_type = "t2.micro"
  
  depends_on = [null_resource.exec,aws_security_group.allow_tls,aws_security_group_rule.http,aws_security_group_rule.https]
  
  connection {
    type        = "ssh"
    user        = "ec2-user"
    private_key = data.local_file.key_file.content 
    host        = aws_instance.webos.public_ip
  }
  provisioner "remote-exec" {
    inline = [
      "sudo yum install httpd git php -y",
      "sudo systemctl start httpd",
      "sudo systemctl enable httpd",
    ]
  }
	
  key_name = "MyKeyPair" 
  vpc_security_group_ids = [aws_security_group.allow_tls.id]
  tags = {
    Name = "TRedHat"
  }
}