create an ec2 instance and ssh to it

main.tf

variable "aws_region" {
  type        = string
}

variable "aws_access_key" {
  type        = string
}

variable "aws_secret_key" {
  type        = string
}

resource "aws_key_pair" "deployer" {
  key_name   = "deployer-key"
  public_key = file("${path.module}/deployer-key.pub")
}

provider "aws" {
  region = var.aws_region
  access_key = var.aws_access_key
  secret_key = var.aws_secret_key
}

data "aws_ami" "centos" {
  most_recent = true
  filter {
    name   = "virtualization-type"
    values = ["hvm"]
  }

  filter {
    name   = "name"
    values = ["amzn2-ami-hvm-*-x86_64-ebs"]
  }
  owners = ["amazon"]
}

resource "aws_security_group" "main" {
  egress = [
    {
      cidr_blocks      = [ "0.0.0.0/0", ]
      description      = ""
      from_port        = 0
      ipv6_cidr_blocks = []
      prefix_list_ids  = []
      protocol         = "-1"
      security_groups  = []
      self             = false
      to_port          = 0
    }
  ]
 ingress                = [
   {
     cidr_blocks      = [ "0.0.0.0/0", ]
     description      = ""
     from_port        = 22
     ipv6_cidr_blocks = []
     prefix_list_ids  = []
     protocol         = "tcp"
     security_groups  = []
     self             = false
     to_port          = 22
  }
  ]
}

resource "aws_instance" "example" {
  ami           = data.aws_ami.centos.id
  instance_type = "t2.micro"
  key_name      = aws_key_pair.deployer.key_name

  tags = {
    name = "example"
  }

  vpc_security_group_ids = [aws_security_group.main.id]

}

data "aws_instances" "test" {
  instance_tags = {
    name = "example"
  }
  instance_state_names = ["pending", "running", "shutting-down", "terminated", "stopping", "stopped"]

  depends_on = [ aws_instance.example ]
}

output "dns" {
  value = aws_instance.example.public_dns
}