将 ECS containerDefinition 命令移动到本地 - Terraform

Question

我正在使用 Terraform 部署带有一些容器的 ECS 服务。代码太长所以我试图将所有逻辑移动到 locals.tf.

现在，我在容器定义中的代码是这样的：

module "prometheus" {
  source = "../aws-modules/ecs-service"

  [... more code ...]

  volumes               = local.prometheus_volumes
  cpu                   = var.prometheus_cpu
  memory                = var.prometheus_memory
  container_definitions = <<DEFINITION
[
  {
    "image": "${var.prometheus_container_image}",
    "name": "${lower(local.prometheus_name)}",
    "networkMode": "${var.prometheus_network_mode}",
    "portMappings": [
      {
        "containerPort": ${var.prometheus_container_port},
        "hostPort": ${var.prometheus_container_port},
        "protocol": "tcp"
      }
    ],
    "command": [
      "/bin/prometheus",
      "--config.file=/etc/prometheus/prometheus.yml",
      "--web.enable-lifecycle",
      "--storage.tsdb.path=/prom_data"
    ],
    [... more code ...]
  }
]
DEFINITION

这是按预期工作的，但我试图让它像这样：

module "prometheus" {
  source = "../aws-modules/ecs-service"

  [... more code ...]

  volumes               = local.prometheus_volumes
  cpu                   = var.prometheus_cpu
  memory                = var.prometheus_memory
  container_definitions = <<DEFINITION
[
  {
    "image": "${var.prometheus_container_image}",
    "name": "${lower(local.prometheus_name)}",
    "networkMode": "${var.prometheus_network_mode}",
    "portMappings": [
      {
        "containerPort": ${var.prometheus_container_port},
        "hostPort": ${var.prometheus_container_port},
        "protocol": "tcp"
      }
    ],
    "command": "${local.prometheus_container_command}",
     [... more code ...]
  }
]
DEFINITION

并在 locals.tf 上声明：

prometheus_container_command = <<DEFINITION
    [
          "/bin/prometheus",
          "--config.file=/etc/prometheus/prometheus.yml",
          "--web.enable-lifecycle",
          "--storage.tsdb.path=/prom_data"
     ]
DEFINITION

我在 containerDefinitions 上做过类似的事情，但从来没有用过数组，所以我遇到了这个错误 （如果我删除换行符，那么错误会从“[=38”指向“/” =]")

! Error: ECS Task Definition container_definitions is invalid: Error decoding JSON: invalid character '\n' in string literal on ../aws-modules/ecs-service/main.tf line 147, in resource "aws_ecs_task_definition" "ecs_task_definition": 147: container_definitions = var.container_definitions

如果我删除“[”:

! Error: ECS Task Definition container_definitions is invalid: Error decoding JSON: invalid character 't' after array element on ../aws-modules/ecs-service/main.tf line 147, in resource "aws_ecs_task_definition" "ecs_task_definition": 147: container_definitions = var.container_definitions

我不知道我还能尝试什么（我试过删除“[”，没有“DEFINITION”等...）

你们中有人尝试过声明一个数组并在 ECS 容器定义上使用它吗？非常感谢。

Answer 1

您在

中使用引号

"command": "${local.prometheus_container_command}"

将导致 command 成为：

"command": "["cpmd1","cmd2", "cmd3"]"

请尝试：

 "command": ${local.prometheus_container_command}

或

 "command": ${jsonencode(local.prometheus_container_command})

将 ECS containerDefinition 命令移动到本地 - Terraform

Moving ECS containerDefinition command to locals - Terraform

amazon-web-services

amazon-ecs

terraform

terraform-provider-aws