时间戳

首页 > 解决方案 > 如何将第二个注册目标（具有不同端口）添加到指向任务定义的 alb 目标组

terraform - 如何将第二个注册目标（具有不同端口）添加到指向任务定义的 alb 目标组

问题描述

我从这个可交付的教程开始，作为创建我的 AWS 环境的基础：http: //blog.shippable.com/setup-a-container-cluster-on-aws-with-terraform-part-2-provision-a-cluster

现在我有 2 个服务在 2 个负载均衡器后面的 2 个 EC2 实例上运行 2 个容器（每个服务 1 个）。我正在尝试将具有不同端口的第二个注册目标添加到目标组，并将其指向我的一个容器。侦听器很容易添加到 ALB，但我似乎无法弄清楚如何添加第二个目标以动态指向运行我的服务的实例。

在 UI 中，我只能手动将其指向一个 AWS 实例，而不是让它动态指向正在运行我的服务的任何实例。

以下看起来应该可以工作，但是由于我的容器是在任务中创建的，因此我似乎无法访问容器 id 来将 target_ip 指向，并且它不能指向服务。

resource "aws_alb_target_group_attachment" "test" {
  target_group_arn = "${aws_alb_target_group.ecs-target-group.arn}"
  target_id        = "${aws_ecs_task_definition.test.id}"
  port             = 5000
}

下面是更多用于上下文的 terraform 代码：

resource "aws_alb" "ecs-load-balancer" {
  name                = "ecs-load-balancer"
  security_groups     = ["${aws_security_group.test_public_sg.id}"]
  subnets             = ["${aws_subnet.test_public_sn_01.id}", "${aws_subnet.test_public_sn_02.id}"]

  tags {
    Name = "ecs-load-balancer"
  }
}

resource "aws_alb_target_group" "ecs-target-group" {
  name                = "ecs-target-group"
  port                = "80"
  protocol            = "HTTP"
  vpc_id              = "${aws_vpc.test_vpc.id}"

  health_check {
      healthy_threshold   = "5"
      unhealthy_threshold = "2"
      interval            = "30"
      matcher             = "200"
      path                = "/"
      port                = "traffic-port"
      protocol            = "HTTP"
      timeout             = "5"
  }

  tags {
    Name = "ecs-target-group"
  }
}

resource "aws_alb_listener" "alb-listener" {
  load_balancer_arn = "${aws_alb.ecs-load-balancer.arn}"
  port              = "80"
  protocol          = "HTTP"

  default_action {
      target_group_arn = "${aws_alb_target_group.ecs-target-group.arn}"
      type             = "forward"
  }
}

resource "aws_alb_listener" "alb-listener-vemcoio" {
  load_balancer_arn = "${aws_alb.ecs-load-balancer.arn}"
  port              = "5000"
  protocol          = "HTTP"

  default_action {
    target_group_arn = "${aws_alb_target_group.ecs-target-group.arn}"
    type             = "forward"
  }
}

resource "aws_ecs_task_definition" "test" {
  family                = "test"
  container_definitions = "${data.template_file.test.rendered}"
}

data "template_file" "test" {
  depends_on = ["aws_instance.mongodb_one"]
  template = "${file("task-definitions/test.json")}"

  vars {
    mongo_ip = "${aws_instance.mongodb_one.private_ip}"
  }
}

标签： terraformamazon-ecs

解决方案

您无需使用资源"aws_alb_target_group_attachment"将目标组与容器或任务或实例连接起来。

您可以使用以下代码。它将自动处理 ecs 任务的动态端口。

检查以下代码的最后四行。

resource "aws_lb_target_group" "rc" {
  name       = "rc"
  port       = 80
  protocol   = "HTTP"
  vpc_id     = "${var.vpc_id}"
}
resource "aws_lb_listener_rule" "rc" {
  listener_arn = "${var.listener_arn}"
  priority     = 100

  action {
    type             = "forward"
    target_group_arn = "${aws_lb_target_group.rc.arn}"
  }

  condition {
    field  = "host-header"
    values = ["www.domain.com"]
  }
}
resource "aws_ecs_service" "rc" {
  name    = "${var.name}"
  cluster = "${var.cluster}"
  task_definition = "${aws_ecs_task_definition.rc.arn}"
  desired_count   = "${var.desired_count}"

  health_check_grace_period_seconds = "${var.health_grace_period}"
  deployment_maximum_percent         = "${var.deployment_maximum_percent}"
  deployment_minimum_healthy_percent = "${var.deployment_minimum_healthy_percent}"

  load_balancer {
    target_group_arn = "${aws_lb_target_group.rc.arn}"
    container_name   = "test"
    container_port   = 5000
  }
}

推荐阅读