如何解决Terraform首次导致ECS和负载均衡器失败
我正在使用Terraform通过Load Balancer部署ECS集群。我的Terraform代码如下:
resource "aws_lb" "my_lb" {
name = format("%s-my-lb",var.name)
internal = false
load_balancer_type = "application"
security_groups = [var.lb_security_groups_id]
subnets = var.public_subnet_id
}
...
resource "aws_lb_target_group" "my_tg" {
name = format("%s-my-tg",var.name)
port = 80
protocol = "HTTP"
target_type = "ip"
vpc_id = var.vpc_id
}
...
resource "aws_lb_listener" "my_listener" {
load_balancer_arn = aws_lb.my_lb.arn
port = "80"
protocol = "HTTP"
default_action {
type = "forward"
target_group_arn = aws_lb_target_group.my_tg.arn
}
}
ECS服务与LoadBalancer的链接如下:
resource "aws_ecs_service" "my_ecs_service" {
name = format("%s-ecs-service",var.name)
...
...
load_balancer {
target_group_arn = aws_lb_target_group.my_tg.arn
container_name = "my-container"
container_port = 80
}
}
当我应用Terraform时,它将创建负载均衡器,目标组和侦听器。但是,在创建ECS服务之前,它将引发以下错误:
...
...
aws_lb_target_group.my_tg: Creation complete after 8s [id=arn:aws:elasticloadbalancing:us-east-1:xxxxxxxx:targetgroup/my-tg/7885700988492baf]
...
...
aws_ecs_service.my_ecs_service: Still creating... [1m40s elapsed]
aws_lb.my_lb: Still creating... [2m0s elapsed]
aws_ecs_service.my_ecs_service: Still creating... [1m50s elapsed]
aws_lb.my_lb: Creation complete after 3m10s [id=arn:aws:elasticloadbalancing:us-east-1:xxxxxxxx:loadbalancer/app/my-lb/b904f34fcc0f90ef]
aws_lb_listener.clinician_listener: Creating...
aws_lb_listener.clinician_listener: Creation complete after 3s [id=arn:aws:elasticloadbalancing:us-east-1:xxxxxxx:listener/app/my-lb/b904f34fcc0f90ef/5e08c22d4c61a26b]
Error: InvalidParameterException: The target group with targetGroupArn arn:aws:elasticloadbalancing:us-east-1:290786573471:targetgroup/gwell-QA-clinician-tg/7885700988492baf does not have an associated load balancer. "my-ecs-service"
当我第二次应用此地形而不更改任何内容时,它会完美运行。我不知道为什么它第一次失败。
我该如何解决这个问题?
解决方法
这通常意味着您需要与ALB明确定义一个depends_on
关系。随后,您可以尝试以下操作:
resource "aws_lb_target_group" "my_tg" {
name = format("%s-my-tg",var.name)
port = 80
protocol = "HTTP"
target_type = "ip"
vpc_id = var.vpc_id
depends_on = [aws_alb.my_lb]
}
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