我正在进行terraform的版本升级，从0.12升级到0.13。到目前为止，我能够通过更改提供者和我的模块来创建必要的部分。
service.tf的现状
module "services" {
source = "../../modules/aws-ecs-servicev2"
for_each = var.applications
container_name = each.value.container_name
container_cpu = each.value.container_cpu
container_image = each.value.container_image
container_memory_total = each.value.container_memory_total
container_memory_reservation = each.value.container_memory_reservation
deployment_max_percent = each.value.deployment_max_percent
deployment_min_healthy = each.value.deployment_min_healthy
container_host_port = each.value.container_host_port
container_port = each.value.container_port
command = each.value.command
replica_count = each.value.replica_count
stage = each.value.stage
alb_enabled = each.value.alb_enabled
alb_subnets = module.vpc.public_subnets
alb_https_enabled = each.value.alb_https_enabled
alb_ssl_arn = each.value.alb_ssl_arn
health_check_path = each.value.health_check_path
internal_lb = each.value.health_check_path
vault_key = each.value.vault_key
vault_backend = each.value.vault_backend
cpu_based_autoscaling = each.value.cpu_based_autoscaling
target_cpu_value = each.value.target_cpu_value
max_capacity = each.value.max_capacity
min_capacity = each.value.min_capacity
scale_out_adjustment = each.value.scale_out_adjustment
scale_out_cooldown = each.value.scale_out_cooldown
scale_in_adjustment = each.value.scale_in_adjustment
scale_in_cooldown = each.value.scale_in_cooldown
disable_scale_in = each.value.disable_scale_in
ecs_arn = module.ecs.arn
namespace = var.namespace
sd_namespace_id = aws_service_discovery_private_dns_namespace.default.id
vpc_id = module.vpc.vpc_id
health_check_response = "200"
alb_sgs = [aws_security_group.ecs_sg.id]
}
和application.tf
variable "applications" {
description = "Map for the services to be deployed"
type = any
default = {
service-a = {
container_cpu = 512
container_image = service-a-image:latest
container_memory_total = 2048
container_memory_reservation = 1024
container_name = "service-a"
command = null
deployment_max_percent = 200
deployment_min_healthy = 50
container_host_port = [0]
container_port = [80]
replica_count = 1
stage = "dev"
health_check_path = null
internal_lb = false
vault_key = null
vault_backend = null
alb_enabled = false
alb_ssl_arn = null
alb_https_enabled = false
cpu_based_autoscaling = false
target_cpu_value = null
max_capacity = null
min_capacity = null
scale_out_adjustment = null
scale_out_cooldown = null
scale_in_adjustment = null
scale_in_cooldown = null
disable_scale_in = false
}
}
}
我想要实现什么
有没有可能以某种方式将默认值传递给health_check_path= null等少数变量，这样我就不必担心在不需要这些值的服务中不包括这些值了。还有一些服务确实需要这样的值，然后我将从相同的变量中提供这些值。示例
service-b = {
container_name = "service-b-container"
container_cpu = 1024
container_image = "service-b-image:latest"
container_memory_total = 1024
container_memory_reservation = 1024
deployment_max_percent = 200
deployment_min_healthy = 50
container_host_port = [0]
container_port = [80]
command = null
replica_count = 1
stage = "dev"
alb_enabled = true
alb_https_enabled = true
alb_ssl_arn = "ssl-arn"
health_check_response = 200
health_check_path = "/status"
internal_lb = false
vault_key = "servia-b"
vault_backend = "service"
cpu_based_autoscaling = true
target_cpu_value = 40
max_capacity = 8
min_capacity = 1
scale_out_adjustment = 2
scale_out_cooldown = 60
scale_in_adjustment = 1
scale_in_cooldown = 300
disable_scale_in = false
},
我试着在变量部分中使用本地或任何其他这样的变量，比如下面的
variable "cpu" {
type = number
default = 1024
description = "cpu to associate"
}
variable "applications" {
description = "Map for the services to be deployed"
type = any
default = {
service-b = {
container_name = "service-b-container"
container_cpu = var.cpu
container_image = "service-b-image:latest"
container_memory_total = 1024
container_memory_reservation = 1024
},
service-a = {
container_name = "service-a-container"
container_cpu = var.cpu
container_image = "service-b-image:latest"
container_memory_total = 1024
}
}
}
但事实证明地形不允许这样。为了详细说明这一点，让我在这里添加它的日志
Error: Variables not allowed
on application.tf line 56, in variable "applications":
56: container_cpu = var.cpu
Variables may not be used here.
如果我尝试不包括services.tf中存在的变量，那么我会得到以下错误
Acquiring state lock. This may take a few moments...
Refreshing Terraform state in-memory prior to plan...
The refreshed state will be used to calculate this plan, but will not be
persisted to local or remote state storage.
module.services["service-a"].module.ecs_alb_service_task.data.aws_iam_policy_document.ecs_exec[0]: Refreshing state...
module.services["service-a"].module.ecs_alb_service_task.data.aws_iam_policy_document.ecs_service_policy[0]: Refreshing state...
module.services["service-a"].module.ecs_alb_service_task.data.aws_iam_policy_document.ecs_task_exec[0]: Refreshing state...
module.services["service-a"].module.ecs_alb_service_task.data.aws_iam_policy_document.ecs_task[0]: Refreshing state...
module.services["service-a"].module.ecs_alb_service_task.data.aws_iam_policy_document.ecs_service[0]: Refreshing state...
module.vpc.aws_vpc.this[0]: Refreshing state... [id=vpc-0641c1d3435df195a]
aws_service_discovery_private_dns_namespace.default: Refreshing state... [id=ns-vyggm2ltoxjufhfa]
Error: Unsupported attribute
on Service.tf line 22, in module "services":
22: alb_enabled = each.value.alb_enabled
|----------------
| each.value is object with 12 attributes
This object does not have an attribute named "alb_enabled".
Error: Unsupported attribute
on Service.tf line 25, in module "services":
25: alb_https_enabled = each.value.alb_https_enabled
|----------------
| each.value is object with 12 attributes
This object does not have an attribute named "alb_https_enabled".
无论如何，我能做到这一点吗？因为有10多个服务需要以这种方式部署，而且一些服务缺乏变量，而另一些服务需要。
选项1。根据文档，这可能会有所帮助-声明一些特殊的对象类型，在那里您可以设置默认值：https://www.terraform.io/docs/configuration/variables.html#declaring-输入变量
选项2这可能也有帮助(还没有尝试过(-使用默认值的查找https://www.terraform.io/docs/configuration/functions/lookup.html
选项2的简单示例：
子模块：
主.tf
resource "local_file" "simple_file" {
filename = "file/${var.file_name}"
content = "foo!"
}
变量.tf
variable "file_name" {
description = "file name"
}
根模块：主.tf
module "file" {
source = "./child_module"
for_each = var.applications
file_name = lookup(each.value, "Not_existing_key", "default_value" )
}
default_value在这种情况下用于子模块
地形图版本0.14.3