eks launch template

ec2.tf

resource "aws_launch_template" "your_eks_launch_template" {
  name = "your_eks_launch_template"

  vpc_security_group_ids = [var.your_security_group.id, aws_eks_cluster.your-eks-cluster.vpc_config[0].cluster_security_group_id]

  block_device_mappings {
    device_name = "/dev/xvda"

    ebs {
      volume_size = 20
      volume_type = "gp2"
    }
  }

  image_id = "your_ami_value"
  instance_type = "t3.medium"
  user_data = base64encode(<<-EOF
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="==MYBOUNDARY=="

--==MYBOUNDARY==
Content-Type: text/x-shellscript; charset="us-ascii"

#!/bin/bash
/etc/eks/bootstrap.sh your-eks-cluster

--==MYBOUNDARY==--\
  EOF
  )

  tag_specifications {
    resource_type = "instance"

    tags = {
      Name = "EKS-MANAGED-NODE"
    }
  }
}