我想使用terraform ecs_service创建和部署一个集群，但是无法做到。我的terraform apply总是在IAM角色周围失败，我不清楚这些角色的作用。具体来说，错误消息是：
InvalidParametersException: Unable to assume role and validate the specified targetGroupArn. Please verify that the ECS service role being passed has the proper permissions.
而且我已经发现：
- 当我在ecs_service中指定了
iam_role时，ECS会抱怨我需要使用服务相关角色。 - 当我在ecs_service中注释掉
iam_role时，ECS会抱怨所假定的角色无法验证targetGroupArn。
我的terraform涉及许多文件。我在下面摘录了感觉与此问题相关的部分。虽然我看到过一些类似的问题发布，但没有提供可行的解决方案来解决我的困境。
## ALB
resource "aws_alb" "frankly_internal_alb" {
name = "frankly-internal-alb"
internal = false
security_groups = ["${aws_security_group.frankly_internal_alb_sg.id}"]
subnets = ["${aws_subnet.frankly_public_subnet_a.id}", "${aws_subnet.frankly_public_subnet_b.id}"]
}
resource "aws_alb_listener" "frankly_alb_listener" {
load_balancer_arn = "${aws_alb.frankly_internal_alb.arn}"
port = "8080"
protocol = "HTTP"
default_action {
target_group_arn = "${aws_alb_target_group.frankly_internal_target_group.arn}"
type = "forward"
}
}
## Target Group
resource "aws_alb_target_group" "frankly_internal_target_group" {
name = "internal-target-group"
port = 8080
protocol = "HTTP"
vpc_id = "${aws_vpc.frankly_vpc.id}"
health_check {
healthy_threshold = 5
unhealthy_threshold = 2
timeout = 5
}
}
## IAM
resource "aws_iam_role" "frankly_ec2_role" {
name = "franklyec2role"
assume_role_policy = <<EOF
{
"Version": "2012-10-17",
"Statement": [
{
"Action": "sts:AssumeRole",
"Principal": {
"Service": "ec2.amazonaws.com"
},
"Effect": "Allow",
"Sid": ""
}
]
}
EOF
}
resource "aws_iam_role" "frankly_ecs_role" {
name = "frankly_ecs_role"
assume_role_policy = <<EOF
{
"Version": "2012-10-17",
"Statement": [
{
"Action": "sts:AssumeRole",
"Principal": {
"Service": "ecs.amazonaws.com"
},
"Effect": "Allow",
"Sid": ""
}
]
}
EOF
}
# aggresively add permissions...
resource "aws_iam_policy" "frankly_ecs_policy" {
name = "frankly_ecs_policy"
description = "A test policy"
policy = <<EOF
{
"Version": "2012-10-17",
"Statement": [
{
"Action": [
"ec2:*",
"ecs:*",
"ecr:*",
"autoscaling:*",
"elasticloadbalancing:*",
"application-autoscaling:*",
"logs:*",
"tag:*",
"resource-groups:*"
],
"Effect": "Allow",
"Resource": "*"
}
]
}
EOF
}
resource "aws_iam_role_policy_attachment" "frankly_ecs_attach" {
role = "${aws_iam_role.frankly_ecs_role.name}"
policy_arn = "${aws_iam_policy.frankly_ecs_policy.arn}"
}
## ECS
resource "aws_ecs_cluster" "frankly_ec2" {
name = "frankly_ec2_cluster"
}
resource "aws_ecs_task_definition" "frankly_ecs_task" {
family = "service"
container_definitions = "${file("terraform/task-definitions/search.json")}"
volume {
name = "service-storage"
docker_volume_configuration {
scope = "shared"
autoprovision = true
}
}
placement_constraints {
type = "memberOf"
expression = "attribute:ecs.availability-zone in [us-east-1]"
}
}
resource "aws_ecs_service" "frankly_ecs_service" {
name = "frankly_ecs_service"
cluster = "${aws_ecs_cluster.frankly_ec2.id}"
task_definition = "${aws_ecs_task_definition.frankly_ecs_task.arn}"
desired_count = 2
iam_role = "${aws_iam_role.frankly_ecs_role.arn}"
depends_on = ["aws_iam_role.frankly_ecs_role", "aws_alb.frankly_internal_alb", "aws_alb_target_group.frankly_internal_target_group"]
# network_configuration = {
# subnets = ["${aws_subnet.frankly_private_subnet_a.id}", "${aws_subnet.frankly_private_subnet_b}"]
# security_groups = ["${aws_security_group.frankly_internal_alb_sg}", "${aws_security_group.frankly_service_sg}"]
# # assign_public_ip = true
# }
ordered_placement_strategy {
type = "binpack"
field = "cpu"
}
load_balancer {
target_group_arn = "${aws_alb_target_group.frankly_internal_target_group.arn}"
container_name = "search-svc"
container_port = 8080
}
placement_constraints {
type = "memberOf"
expression = "attribute:ecs.availability-zone in [us-east-1]"
}
}
apply错误的上下文？是aws_ecs_service资源引起的吗？你也能展示一下ECS集群实例的Terraform代码吗？ - ydaetskcoRterraform destroy然后重新应用并不能解决问题。 - Daniel Patrick