Go to Qiita Advent Calendar 2024 Top
LoginSignup
7
5

Delete article

Deleted articles cannot be recovered.

Draft of this article would be also deleted.

Are you sure you want to delete this article?

More than 3 years have passed since last update.

@charoninTIS株式会社

AWS FireLensを使った時の、Fluent Bit（Fluentd）タグの命名規則を確認する

Posted at

What's？

Fluent BitやFluentdを使う時は、設定ファイルでタグを使ったルーティングを書くことになります。

AWS FireLensを使用した場合、タグがどうなるかを確認したい、ということで。

AWS FireLensとFluent Bit／Fluentd

AWS FireLensは、Amazon ECS上で動作するコンテナのログをFluent BitまたはFluentdに送信するログドライバーです。

この仕組みで使うFluent BitおよびFluentdの設定は、タスク定義（のコンテナ定義）より自動生成されます。ですが、それだけでなくカスタムの設定ファイルを含めることができます。

FireLens 設定を使用するタスク定義の作成 / カスタム設定ファイルの指定

ところが、ドキュメントにはルーティングを書くためのタグに関する記述がありません。

GitHub上のAWS FireLensを使ったサンプルを見ても、Matchは*や**になっていることが多く、ここからはルールがわかりません。

Amazon ECS FireLens Examples

唯一、タグのリライトの設定だけ少しだけ具体的な値が出ていますが、それでもルールとしてはハッキリしません。

<match app**>
  @type rewrite_tag_filter

どうしたものでしょうと調べてみると、次のブログにタグの情報が書かれているのを見つけました。「Log Tagging in the generated config file」に記載があります。

Under the hood: FireLens for Amazon ECS Tasks

以下のように書かれています。

Container standard out logs are tagged with <container name>-firelens-<task ID>. So if your container name is app and your Task ID is dcef9dee-d960-4af8-a206-46c31a7f1e67, the tag is app-firelens-dcef9dee-d960-4af8-a206-46c31a7f1e67.

つまり、タグは[コンテナ名]-firelens-[タスクID]になるということですね。

結論はこちらなので、覚えておきましょう。

確認してみる

で、これで終わっても面白くないので、実際のタグを確認してみたいと思います。

カスタム設定ファイルを用意するのは面倒なので、他の方法で…。

ここは、Fluent Bit Plugin for CloudWatch Logsを使いましょう。

Fluent Bit Plugin for CloudWatch Logs

プラグインの設定であるlog_stream_prefixを使えば、ログストリームにタグが入りそうです。

log_stream_prefix: (deprecated) Prefix for the Log Stream name. Setting this to prefix- is the same as setting log_stream_name = prefix-$(tag).

現在のAWS for Fluent Bitのバージョンは2.10.0で、組み込まれているFluent Bit Plugin for CloudWatch Logsのバージョンはv1.6.0です。

こちらのソースコードを見ると、確かにタグが使われそうですね。

		e.stream = output.logStreamPrefix + e.Tag

というわけで、log_stream_prefixを使って確認してみましょう。

なお、log_stream_prefixはdeprecatedと書かれていますが、指定しなかった場合は起動しなくなったのでlog_stream_prefixをそのまま使います…。

2021-02-22T14:08:55.594000+00:00 fluentbit-log-stream/log_router/634a24ad44334f9aa9799f5b4e3257b1 time="2021-02-22T14:08:55Z" level=error msg="log_stream_name or log_stream_prefix is required"

環境

今回の環境は、こちらです。

$ terraform version
Terraform v0.14.7
+ provider registry.terraform.io/hashicorp/aws v3.29.0

AWSのクレデンシャルは、環境変数で設定しているものとします。

$ export AWS_ACCESS_KEY_ID=...
$ export AWS_SECRET_ACCESS_KEY=...
$ export AWS_DEFAULT_REGION=ap-northeast-1

お題

AWS Fargateクラスタを構築し、その中でnginxとFluent Bitのコンテナを動作させます。Fluent BitはAWS FireLensログドライバーとして使い、nginxのログをAmazon CloudWatch Logsへ送信するようにします。

この時の、nginx用に用意したAmazon CloudWatch Logsのログストリーム名を確認します。

環境は、Terraformで構築します。

確認

まずは、必要最低限の部分を抜粋で。
※最後に全体を載せます

タスク定義。

resource "aws_ecs_task_definition" "nginx" {
  family                   = "nginx-task-definition"
  cpu                      = "512"
  memory                   = "1024"
  network_mode             = "awsvpc"
  requires_compatibilities = ["FARGATE"]
  execution_role_arn       = aws_iam_role.ecs_task_execution_role.arn
  task_role_arn            = aws_iam_role.ecs_task_role.arn

  container_definitions = <<JSON
    [
      {
        "name": "log_router",
        "image": "906394416424.dkr.ecr.ap-northeast-1.amazonaws.com/aws-for-fluent-bit:2.10.1",
        "essential": true,
        "firelensConfiguration": {
          "type": "fluentbit"
        },
        "logConfiguration": {
          "logDriver": "awslogs",
          "options": {
            "awslogs-group": "${aws_cloudwatch_log_group.fluentbit.name}",
            "awslogs-region": "ap-northeast-1",
            "awslogs-stream-prefix": "fluentbit-log-stream"
          }
        }
      },
      {
        "name": "nginx",
        "image": "nginx:1.19.7",
        "essential": true,
        "portMappings": [
          {
            "protocol": "tcp",
            "containerPort": 80
          }
        ],
        "logConfiguration": {
          "logDriver": "awsfirelens",
          "options": {
            "Name": "cloudwatch",
            "region": "ap-northeast-1",
            "log_group_name": "${aws_cloudwatch_log_group.nginx.name}",
            "log_stream_prefix": "nginx-log-stream-",
            "auto_create_group": "false"
          }
        }
      }
    ]
      JSON
}

nginxのログは、AWS FireLensを介してAmazon CloudWatch Logsへ送信します。

      {
        "name": "nginx",
        "image": "nginx:1.19.7",
        "essential": true,
        "portMappings": [
          {
            "protocol": "tcp",
            "containerPort": 80
          }
        ],
        "logConfiguration": {
          "logDriver": "awsfirelens",
          "options": {
            "Name": "cloudwatch",
            "region": "ap-northeast-1",
            "log_group_name": "${aws_cloudwatch_log_group.nginx.name}",
            "log_stream_prefix": "nginx-log-stream-",
            "auto_create_group": "false"
          }
        }
      }

log_stream_prefixをnginx-log-stream-と指定したので、ストリーム名はnginx-log-stream-nginx-firelens-[タスクID]となるはずですね。
※ コンテナ名はnginx

nginxのログ出力先ロググループの定義は、こちら。

resource "aws_cloudwatch_log_group" "nginx" {
  name = "/fargate/containers/nginx"
}

applyします。

$ terraform apply

リソース構築後、ロググループをtailしつつ

$ aws logs tail --follow /fargate/containers/nginx

curlでALB越しにnginxにアクセスします。

$ curl [ALBのDNS名]

出力されたログは、こちら。

2021-02-22T15:38:15.159000+00:00 nginx-log-stream-nginx-firelens-6c820b75bc1648c1a7ca4b429c0e2711 {"container_id":"6c820b75bc1648c1a7ca4b429c0e2711-2531612879","container_name":"nginx","ecs_cluster":"nginx-cluster","ecs_task_arn":"arn:aws:ecs:ap-northeast-1:[AWSアカウントID]:task/nginx-cluster/6c820b75bc1648c1a7ca4b429c0e2711","ecs_task_definition":"nginx-task-definition:15","log":"10.0.10.193 - - [22/Feb/2021:15:38:15 +0000] \"GET / HTTP/1.1\" 200 612 \"-\" \"curl/7.68.0\" \"aaa.bbb.ccc.ddd\"","source":"stdout"}
2021-02-22T15:38:17.204000+00:00 nginx-log-stream-nginx-firelens-0beffa5df3b445f19fe658e9fdb2663c {"container_id":"0beffa5df3b445f19fe658e9fdb2663c-2531612879","container_name":"nginx","ecs_cluster":"nginx-cluster","ecs_task_arn":"arn:aws:ecs:ap-northeast-1:[AWSアカウントID]:task/nginx-cluster/0beffa5df3b445f19fe658e9fdb2663c","ecs_task_definition":"nginx-task-definition:15","log":"10.0.10.193 - - [22/Feb/2021:15:38:17 +0000] \"GET / HTTP/1.1\" 200 612 \"-\" \"curl/7.68.0\" \"aaa.bbb.ccc.ddd\"","source":"stdout"}
2021-02-22T15:38:19.249000+00:00 nginx-log-stream-nginx-firelens-6c820b75bc1648c1a7ca4b429c0e2711 {"container_id":"6c820b75bc1648c1a7ca4b429c0e2711-2531612879","container_name":"nginx","ecs_cluster":"nginx-cluster","ecs_task_arn":"arn:aws:ecs:ap-northeast-1:[AWSアカウントID]:task/nginx-cluster/6c820b75bc1648c1a7ca4b429c0e2711","ecs_task_definition":"nginx-task-definition:15","log":"10.0.10.193 - - [22/Feb/2021:15:38:19 +0000] \"GET / HTTP/1.1\" 200 612 \"-\" \"curl/7.68.0\" \"aaa.bbb.ccc.ddd\"","source":"stdout"}
2021-02-22T15:38:21.294000+00:00 nginx-log-stream-nginx-firelens-116c37fd39b84657874faf2eb3a96af2 {"container_id":"116c37fd39b84657874faf2eb3a96af2-2531612879","container_name":"nginx","ecs_cluster":"nginx-cluster","ecs_task_arn":"arn:aws:ecs:ap-northeast-1:[AWSアカウントID]:task/nginx-cluster/116c37fd39b84657874faf2eb3a96af2","ecs_task_definition":"nginx-task-definition:15","log":"10.0.10.193 - - [22/Feb/2021:15:38:21 +0000] \"GET / HTTP/1.1\" 200 612 \"-\" \"curl/7.68.0\" \"aaa.bbb.ccc.ddd\"","source":"stdout"}
2021-02-22T15:38:23.345000+00:00 nginx-log-stream-nginx-firelens-0beffa5df3b445f19fe658e9fdb2663c {"container_id":"0beffa5df3b445f19fe658e9fdb2663c-2531612879","container_name":"nginx","ecs_cluster":"nginx-cluster","ecs_task_arn":"arn:aws:ecs:ap-northeast-1:[AWSアカウントID]:task/nginx-cluster/0beffa5df3b445f19fe658e9fdb2663c","ecs_task_definition":"nginx-task-definition:15","log":"10.0.10.193 - - [22/Feb/2021:15:38:23 +0000] \"GET / HTTP/1.1\" 200 612 \"-\" \"curl/7.68.0\" \"aaa.bbb.ccc.ddd\"","source":"stdout"}
2021-02-22T15:38:25.390000+00:00 nginx-log-stream-nginx-firelens-116c37fd39b84657874faf2eb3a96af2 {"container_id":"116c37fd39b84657874faf2eb3a96af2-2531612879","container_name":"nginx","ecs_cluster":"nginx-cluster","ecs_task_arn":"arn:aws:ecs:ap-northeast-1:[AWSアカウントID]:task/nginx-cluster/116c37fd39b84657874faf2eb3a96af2","ecs_task_definition":"nginx-task-definition:15","log":"10.0.10.193 - - [22/Feb/2021:15:38:25 +0000] \"GET / HTTP/1.1\" 200 612 \"-\" \"curl/7.68.0\" \"aaa.bbb.ccc.ddd\"","source":"stdout"}
2021-02-22T15:38:27.785000+00:00 nginx-log-stream-nginx-firelens-116c37fd39b84657874faf2eb3a96af2 {"container_id":"116c37fd39b84657874faf2eb3a96af2-2531612879","container_name":"nginx","ecs_cluster":"nginx-cluster","ecs_task_arn":"arn:aws:ecs:ap-northeast-1:[AWSアカウントID]:task/nginx-cluster/116c37fd39b84657874faf2eb3a96af2","ecs_task_definition":"nginx-task-definition:15","log":"10.0.10.193 - - [22/Feb/2021:15:38:27 +0000] \"GET / HTTP/1.1\" 200 612 \"-\" \"ELB-HealthChecker/2.0\" \"-\"","source":"stdout"}
2021-02-22T15:38:27.785000+00:00 nginx-log-stream-nginx-firelens-0beffa5df3b445f19fe658e9fdb2663c {"container_id":"0beffa5df3b445f19fe658e9fdb2663c-2531612879","container_name":"nginx","ecs_cluster":"nginx-cluster","ecs_task_arn":"arn:aws:ecs:ap-northeast-1:[AWSアカウントID]:task/nginx-cluster/0beffa5df3b445f19fe658e9fdb2663c","ecs_task_definition":"nginx-task-definition:15","log":"10.0.10.193 - - [22/Feb/2021:15:38:27 +0000] \"GET / HTTP/1.1\" 200 612 \"-\" \"ELB-HealthChecker/2.0\" \"-\"","source":"stdout"}
2021-02-22T15:38:27.793000+00:00 nginx-log-stream-nginx-firelens-6c820b75bc1648c1a7ca4b429c0e2711 {"container_id":"6c820b75bc1648c1a7ca4b429c0e2711-2531612879","container_name":"nginx","ecs_cluster":"nginx-cluster","ecs_task_arn":"arn:aws:ecs:ap-northeast-1:[AWSアカウントID]:task/nginx-cluster/6c820b75bc1648c1a7ca4b429c0e2711","ecs_task_definition":"nginx-task-definition:15","log":"10.0.10.193 - - [22/Feb/2021:15:38:27 +0000] \"GET / HTTP/1.1\" 200 612 \"-\" \"ELB-HealthChecker/2.0\" \"-\"","source":"stdout"}
2021-02-22T15:38:29.475000+00:00 nginx-log-stream-nginx-firelens-0beffa5df3b445f19fe658e9fdb2663c {"container_id":"0beffa5df3b445f19fe658e9fdb2663c-2531612879","container_name":"nginx","ecs_cluster":"nginx-cluster","ecs_task_arn":"arn:aws:ecs:ap-northeast-1:[AWSアカウントID]:task/nginx-cluster/0beffa5df3b445f19fe658e9fdb2663c","ecs_task_definition":"nginx-task-definition:15","log":"10.0.10.193 - - [22/Feb/2021:15:38:29 +0000] \"GET / HTTP/1.1\" 200 612 \"-\" \"curl/7.68.0\" \"aaa.bbb.ccc.ddd\"","source":"stdout"}
2021-02-22T15:38:31.520000+00:00 nginx-log-stream-nginx-firelens-116c37fd39b84657874faf2eb3a96af2 {"container_id":"116c37fd39b84657874faf2eb3a96af2-2531612879","container_name":"nginx","ecs_cluster":"nginx-cluster","ecs_task_arn":"arn:aws:ecs:ap-northeast-1:[AWSアカウントID]:task/nginx-cluster/116c37fd39b84657874faf2eb3a96af2","ecs_task_definition":"nginx-task-definition:15","log":"10.0.10.193 - - [22/Feb/2021:15:38:31 +0000] \"GET / HTTP/1.1\" 200 612 \"-\" \"curl/7.68.0\" \"aaa.bbb.ccc.ddd\"","source":"stdout"}
2021-02-22T15:38:33.567000+00:00 nginx-log-stream-nginx-firelens-6c820b75bc1648c1a7ca4b429c0e2711 {"container_id":"6c820b75bc1648c1a7ca4b429c0e2711-2531612879","container_name":"nginx","ecs_cluster":"nginx-cluster","ecs_task_arn":"arn:aws:ecs:ap-northeast-1:[AWSアカウントID]:task/nginx-cluster/6c820b75bc1648c1a7ca4b429c0e2711","ecs_task_definition":"nginx-task-definition:15","log":"10.0.10.193 - - [22/Feb/2021:15:38:33 +0000] \"GET / HTTP/1.1\" 200 612 \"-\" \"curl/7.68.0\" \"aaa.bbb.ccc.ddd\"","source":"stdout"}
2021-02-22T15:38:35.606000+00:00 nginx-log-stream-nginx-firelens-116c37fd39b84657874faf2eb3a96af2 {"container_id":"116c37fd39b84657874faf2eb3a96af2-2531612879","container_name":"nginx","ecs_cluster":"nginx-cluster","ecs_task_arn":"arn:aws:ecs:ap-northeast-1:[AWSアカウントID]:task/nginx-cluster/116c37fd39b84657874faf2eb3a96af2","ecs_task_definition":"nginx-task-definition:15","log":"10.0.10.193 - - [22/Feb/2021:15:38:35 +0000] \"GET / HTTP/1.1\" 200 612 \"-\" \"curl/7.68.0\" \"aaa.bbb.ccc.ddd\"","source":"stdout"}
2021-02-22T15:38:37.646000+00:00 nginx-log-stream-nginx-firelens-0beffa5df3b445f19fe658e9fdb2663c {"container_id":"0beffa5df3b445f19fe658e9fdb2663c-2531612879","container_name":"nginx","ecs_cluster":"nginx-cluster","ecs_task_arn":"arn:aws:ecs:ap-northeast-1:[AWSアカウントID]:task/nginx-cluster/0beffa5df3b445f19fe658e9fdb2663c","ecs_task_definition":"nginx-task-definition:15","log":"10.0.10.193 - - [22/Feb/2021:15:38:37 +0000] \"GET / HTTP/1.1\" 200 612 \"-\" \"curl/7.68.0\" \"aaa.bbb.ccc.ddd\"","source":"stdout"}

この時のログストリーム名に注目してみましょう。

nginx-log-stream-nginx-firelens-6c820b75bc1648c1a7ca4b429c0e2711
nginx-log-stream-nginx-firelens-0beffa5df3b445f19fe658e9fdb2663c
nginx-log-stream-nginx-firelens-116c37fd39b84657874faf2eb3a96af2

6c820b75bc1648c1a7ca4b429c0e2711、0beffa5df3b445f19fe658e9fdb2663c、116c37fd39b84657874faf2eb3a96af2はタスクIDなので（desired_countは3にしています）、nginx-log-stream-nginx-firelens-[タスクID]（ログストリームprefix＋タグ）というフォーマットになっていますね。

これで、確認ができました。

オマケ

最後に、今回使用したリソース定義全体を載せておきます。

main.tf
terraform {
  required_version = "0.14.7"

  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "3.29.0"
    }
  }
}

provider "aws" {
}

module "vpc" {
  source  = "terraform-aws-modules/vpc/aws"
  version = "2.71.0"

  name = "my-vpc"
  cidr = "10.0.0.0/16"

  enable_dns_hostnames = true
  enable_dns_support   = true

  azs             = ["ap-northeast-1a", "ap-northeast-1c"]
  public_subnets  = ["10.0.10.0/24", "10.0.20.0/24"]
  private_subnets = ["10.0.30.0/24", "10.0.40.0/24"]

  map_public_ip_on_launch = false

  enable_nat_gateway     = true
  single_nat_gateway     = false
  one_nat_gateway_per_az = false
}

module "load_balancer_sg" {
  source  = "terraform-aws-modules/security-group/aws//modules/http-80"
  version = "3.18.0"

  name   = "load-balancer-sg"
  vpc_id = module.vpc.vpc_id

  ingress_cidr_blocks = ["0.0.0.0/0"]
}

module "nginx_service_sg" {
  source  = "terraform-aws-modules/security-group/aws"
  version = "3.18.0"

  name   = "nginx-service-sg"
  vpc_id = module.vpc.vpc_id

  ingress_with_cidr_blocks = [
    {
      from_port   = 80
      to_port     = 80
      protocol    = "tcp"
      description = "nginx-service inbound ports"
      cidr_blocks = "10.0.10.0/24"
    },
    {
      from_port   = 80
      to_port     = 80
      protocol    = "tcp"
      description = "nginx-service inbound ports"
      cidr_blocks = "10.0.20.0/24"
    }
  ]

  egress_with_cidr_blocks = [
    {
      from_port   = 0
      to_port     = 0
      protocol    = "-1"
      description = "nginx-service outbound ports"
      cidr_blocks = "0.0.0.0/0"
    }
  ]
}

module "load_balancer" {
  source  = "terraform-aws-modules/alb/aws"
  version = "5.11.0"

  name = "nginx-alb"

  vpc_id             = module.vpc.vpc_id
  load_balancer_type = "application"
  internal           = false

  subnets         = module.vpc.public_subnets
  security_groups = [module.load_balancer_sg.this_security_group_id]

  target_groups = [
    {
      backend_protocol = "HTTP"
      backend_port     = 80
      target_type      = "ip"

      health_check = {
        interval = 20
      }
    }
  ]

  http_tcp_listeners = [
    {
      port     = 80
      protocol = "HTTP"
    }
  ]
}

locals {
  vpc_id = module.vpc.vpc_id

  private_subnets                = module.vpc.private_subnets
  nginx_service_security_groups  = [module.nginx_service_sg.this_security_group_id]
  load_balancer_target_group_arn = module.load_balancer.target_group_arns[0]

  nginx_simple_container_definition = <<JSON
    [
      {
        "name": "nginx",
        "image": "nginx:1.19.7",
        "essential": true,
        "portMappings": [
          {
            "protocol": "tcp",
            "containerPort": 80
          }
        ],
        "logConfiguration": {
          "logDriver": "awslogs",
          "options": {
            "awslogs-group": "${aws_cloudwatch_log_group.nginx.name}",
            "awslogs-region": "ap-northeast-1",
            "awslogs-stream-prefix": "nginx-log-stream"
          }
        }
      }
    ]
    JSON

  nginx_with_fluentbit_container_definitions = <<JSON
  [
    {
      "name": "log_router",
      "image": "906394416424.dkr.ecr.ap-northeast-1.amazonaws.com/aws-for-fluent-bit:2.10.1",
      "essential": true,
      "firelensConfiguration": {
        "type": "fluentbit",
        "options":{
           "enable-ecs-log-metadata": "true"
        }
      },
      "logConfiguration": {
        "logDriver": "awslogs",
        "options": {
          "awslogs-group": "${aws_cloudwatch_log_group.fluentbit.name}",
          "awslogs-region": "ap-northeast-1",
          "awslogs-stream-prefix": "fluentbit-log-stream"
        }
      }
    },
    {
      "name": "nginx",
      "image": "nginx:1.19.7",
      "essential": true,
      "portMappings": [
        {
          "protocol": "tcp",
          "containerPort": 80
        }
      ],
      "logConfiguration": {
        "logDriver": "awsfirelens",
        "options": {
          "Name": "cloudwatch",
          "region": "ap-northeast-1",
          "log_group_name": "${aws_cloudwatch_log_group.nginx.name}",
          "log_stream_prefix": "nginx-log-stream-",
          "auto_create_group": "false"
        }
      }
    }
  ]
    JSON
}

data "aws_iam_policy_document" "ecs_assume_role" {
  statement {
    actions = ["sts:AssumeRole"]

    principals {
      type        = "Service"
      identifiers = ["ecs-tasks.amazonaws.com"]
    }
  }
}

data "aws_iam_policy" "ecs_task_execution_role_policy" {
  arn = "arn:aws:iam::aws:policy/service-role/AmazonECSTaskExecutionRolePolicy"
}

resource "aws_iam_role" "ecs_task_execution_role" {
  name               = "MyEcsTaskExecutionRole"
  assume_role_policy = data.aws_iam_policy_document.ecs_assume_role.json
}

resource "aws_iam_role_policy_attachment" "ecs_task_execution_role_policy_attachment" {
  role       = aws_iam_role.ecs_task_execution_role.name
  policy_arn = data.aws_iam_policy.ecs_task_execution_role_policy.arn
}

data "aws_iam_policy_document" "ecs_task_role_policy_document" {
  statement {
    effect = "Allow"

    actions = [
      "logs:DescribeLogStreams",
      "logs:CreateLogGroup",
      "logs:CreateLogStream",
      "logs:PutLogEvents"
    ]

    resources = ["*"]
  }
}

resource "aws_iam_policy" "ecs_task_role_policy" {
  name   = "MyEcsTaskPolicy"
  policy = data.aws_iam_policy_document.ecs_task_role_policy_document.json
}

resource "aws_iam_role" "ecs_task_role" {
  name               = "MyEcsTaskRole"
  assume_role_policy = data.aws_iam_policy_document.ecs_assume_role.json
}

resource "aws_iam_role_policy_attachment" "ecs_task_role_policy_attachment" {
  role       = aws_iam_role.ecs_task_role.name
  policy_arn = aws_iam_policy.ecs_task_role_policy.arn
}

resource "aws_cloudwatch_log_group" "nginx" {
  name = "/fargate/containers/nginx"
}

resource "aws_cloudwatch_log_group" "fluentbit" {
  name = "/fargate/containers/fluentbit"
}

resource "aws_ecs_cluster" "nginx" {
  name = "nginx-cluster"
}

resource "aws_ecs_task_definition" "nginx" {
  family       = "nginx-task-definition"
  cpu          = "512"
  memory       = "1024"
  network_mode = "awsvpc"
  requires_compatibilities = [
  "FARGATE"]
  execution_role_arn = aws_iam_role.ecs_task_execution_role.arn
  task_role_arn      = aws_iam_role.ecs_task_role.arn

  # container_definitions = local.nginx_simple_container_definition
  container_definitions = local.nginx_with_fluentbit_container_definitions
}

resource "aws_ecs_service" "nginx" {
  name             = "nginx-service"
  cluster          = aws_ecs_cluster.nginx.arn
  task_definition  = aws_ecs_task_definition.nginx.arn
  desired_count    = 3
  launch_type      = "FARGATE"
  platform_version = "1.4.0"

  deployment_minimum_healthy_percent = 50

  network_configuration {
    assign_public_ip = false
    security_groups  = local.nginx_service_security_groups
    subnets          = local.private_subnets
  }

  load_balancer {
    target_group_arn = local.load_balancer_target_group_arn
    container_name   = "nginx"
    container_port   = 80
  }
}

output "alb_arn" {
  value = module.load_balancer.this_lb_arn
}

output "alb_dns_name" {
  value = module.load_balancer.this_lb_dns_name
}
7
5
0

Register as a new user and use Qiita more conveniently

  1. You get articles that match your needs
  2. You can efficiently read back useful information
  3. You can use dark theme
What you can do with signing up
Sign upLogin
7
5

Delete article

Deleted articles cannot be recovered.

Draft of this article would be also deleted.

Are you sure you want to delete this article?