Terraform AWS ec2 userdata로 httpd 생성하기

다음과 같은 user_data를 aws_instance resource 블럭안에 넣어준다. 

user_data = <<EOF
#! /bin/bash
INSTANCE_ID=$(curl -s http://169.254.169.254/latest/meta-data/instance-id)
sudo yum install -y httpd
echo $INSTANCE_ID | sudo tee /var/www/html/index.html
sudo service httpd start
EOF

 

예시) 

resource "aws_instance" "bastion" {
  ami                         = data.aws_ami.distro.id
  instance_type               = var.aws_bastion_size
  count                       = var.aws_bastion_num
  associate_public_ip_address = true
  subnet_id                   = element(module.aws-vpc.aws_subnet_ids_public, count.index)
  vpc_security_group_ids      = module.aws-vpc.aws_security_group
  key_name                    = var.AWS_SSH_KEY_NAME
  user_data                   = <<EOF
#! /bin/bash
INSTANCE_ID=$(curl -s http://169.254.169.254/latest/meta-data/instance-id)
sudo yum install -y httpd
echo $INSTANCE_ID | sudo tee /var/www/html/index.html
sudo service httpd start
EOF
  tags = merge(var.default_tags, tomap({
    Name    = "${var.aws_cluster_name}-bastion-${count.index}"
  }))
}