aws-ecs-canary-deployment/alb.tf at master · ankitosh/aws-ecs-canary-deployment · GitHub

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################################ Load Balancer Blue ###########################################
resource "aws_alb" "blue-lb" {
  name            = "Blue-${var.customer}-${var.appname}-${var.ZONE}-${var.envr}"
  security_groups = ["${aws_security_group.alb.id}"]
  subnets         = ["${aws_subnet.public_subnet.*.id}"]

  tags = {
    Name = "Blue-${var.customer}-${var.appname}-${var.ZONE}-${var.envr}"
  }
}

################################# Target Group For Blue Deployment ###############################
resource "aws_alb_target_group" "blue-tg" {
  name     = "Blue-${var.customer}-${var.appname}-${var.ZONE}-${var.envr}"
  port     = "80"
  protocol = "HTTP"
  vpc_id   = "${aws_vpc.main.id}"

  health_check {
    healthy_threshold   = "5"
    unhealthy_threshold = "2"
    interval            = "30"
    matcher             = "200-499"
    path                = "/"
    port                = "traffic-port"
    protocol            = "HTTP"
    timeout             = "5"
  }

  tags = {
    Name = "Blue-${var.customer}-${var.appname}-${var.ZONE}-${var.envr}"
  }
}

resource "aws_alb_listener" "blue-listener" {
  load_balancer_arn = "${aws_alb.blue-lb.arn}"
  port              = "80"
  protocol          = "HTTP"

  default_action {
    target_group_arn = "${aws_alb_target_group.blue-tg.arn}"
    type             = "forward"
  }

  depends_on = [
    "aws_alb.blue-lb",
  ]
}

output "Blue-tg-arn" {
  value = "${aws_alb_target_group.blue-tg.arn}"
}

# ############################################## Target Group for Green Deployment #######################
resource "aws_alb_target_group" "green-tg" {
  name     = "Green-${var.customer}-${var.appname}-${var.ZONE}-${var.envr}"
  port     = "80"
  protocol = "HTTP"
  vpc_id   = "${aws_vpc.main.id}"

  health_check {
    healthy_threshold   = "5"
    unhealthy_threshold = "2"
    interval            = "30"
    matcher             = "200-399"
    path                = "/"
    port                = "traffic-port"
    protocol            = "HTTP"
    timeout             = "5"
  }

  tags = {
    Name = "Green-${var.customer}-${var.appname}-${var.ZONE}-${var.envr}"
  }
}

resource "aws_alb_listener" "green-listener" {
  load_balancer_arn = "${aws_alb.blue-lb.arn}"
  port              = "8080"
  protocol          = "HTTP"

  default_action {
    target_group_arn = "${aws_alb_target_group.green-tg.arn}"
    type             = "forward"
  }

  depends_on = [
    "aws_alb.blue-lb",
  ]
}