使用java/node JDK和terraform的Cloud watch eks自动缩放解决方案

import java.io.IOException;
import java.net.InetSocketAddress;
import com.sun.net.httpserver.HttpServer;

public class SimpleHttpServer {
    public static void main(String[] args) throws IOException {
        HttpServer server = HttpServer.create(new InetSocketAddress(8000), 0);
        server.createContext("/", new MyHandler());
        server.setExecutor(null); // creates a default executor
        server.start();
    }
}

class MyHandler implements HttpHandler {
    @Override
    public void handle(HttpExchange t) throws IOException {
        String response = "Hello World!";
        t.sendResponseHeaders(200, response.length());
        OutputStream os = t.getResponseBody();
        os.write(response.getBytes());
        os.close();
    }
}

provider "aws" {
  region = "us-west-2"
}

resource "aws_eks_cluster" "example" {
  name     = "example"
  role_arn = aws_iam_role.example.arn

  vpc_config {
    subnet_ids = [aws_subnet.example.id]
  }
}

resource "aws_autoscaling_group" "example" {
  desired_capacity = 1
  max_size         = 3
  min_size         = 1

  launch_template {
    id      = aws_launch_template.example.id
    version = "$Latest"
  }

  target_group_arns = [aws_lb_target_group.example.arn]

  metrics {
    type = "CloudWatch"
    metric {
      name  = "CPUUtilization"
      stat  = "Average"
      unit  = "Percent"
      period = 300
      threshold = 80
    }
  }
}