Terraformで最新のLinuxのAMIを取得するためのコード

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Terraformを使ってAmazon Linux 2023とUbuntu 24.04の最新AMIを取得する際のフィルター設定例をまとめてみました。

はじめに

• TerraformでEC2用のAmazon Linux/Ubuntuの最新のAMIを取得するためのコード。フィルターのかけかたをいつも忘れてしまうのでメモとして書いておく
• Amazon Linux 2023とUbuntu 24.04が対象

Terraformコード

# Ubuntu 24.04
data "aws_ami" "ubuntu" {
  most_recent = true
  owners      = ["099720109477"] # CanonicalのAMI所有者ID

  filter {
    name   = "name"
    values = ["ubuntu/images/hvm-ssd-gp3/ubuntu-noble-24.04-amd64-server-*"]
  }

  filter {
    name   = "architecture"
    values = ["x86_64"]
  }

  filter {
    name   = "virtualization-type"
    values = ["hvm"]
  }
}

# Amazon Linux 2023
data "aws_ami" "amazon_linux" {
  most_recent = true
  owners      = ["137112412989"] # AmazonのAMI所有者ID

  filter {
    name   = "name"
    # Amazon Linux 2023 AMIの名前パターン。minimumを除外する
    values = ["al2023-ami-2023*-kernel-*-x86_64"]
  }

  filter {
    name   = "architecture"
    values = ["x86_64"]
  }

  filter {
    name   = "virtualization-type"
    values = ["hvm"]
  }
}

# 出力
output "ubuntu_ami_details" {
  value = data.aws_ami.ubuntu
}

output "amazon_linux_ami_details" {
  value = data.aws_ami.amazon_linux
}

Amazon Linuxの場合は、minimumとプレフィックスがついたAMIが入ってしまい、これが必要なライブラリを全然持っていないことが多いのでそれを除外するために「2023」を入れている。アーキテクチャーのフィルタリングはnameでしなくてもよかったかもしれない。

結果

terraform applyの結果。以下のような結果が返ってくるはず。

amazon_linux_ami_details = {
  "architecture" = "x86_64"
  "arn" = "arn:aws:ec2:ap-northeast-1::image/ami-0ab02459752898a60"
  "block_device_mappings" = toset([
    {
      "device_name" = "/dev/xvda"
      "ebs" = tomap({
        "delete_on_termination" = "true"
        "encrypted" = "false"
        "iops" = "3000"
        "snapshot_id" = "snap-0846e1db4a7c52e3a"
        "throughput" = "125"
        "volume_size" = "8"
        "volume_type" = "gp3"
      })
      "no_device" = ""
      "virtual_name" = ""
    },
  ])
  "boot_mode" = "uefi-preferred"
  "creation_date" = "2024-12-12T08:31:35.000Z"
  "deprecation_time" = "2025-03-12T08:32:00.000Z"
  "description" = "Amazon Linux 2023 AMI 2023.6.20241212.0 x86_64 HVM kernel-6.1"
  "ena_support" = true
  "executable_users" = tolist(null) /* of string */
  "filter" = toset([
    {
      "name" = "architecture"
      "values" = toset([
        "x86_64",
      ])
    },
    {
      "name" = "name"
      "values" = toset([
        "al2023-ami-2023*-kernel-*-x86_64",
      ])
    },
    {
      "name" = "virtualization-type"
      "values" = toset([
        "hvm",
      ])
    },
  ])
  "hypervisor" = "xen"
  "id" = "ami-0ab02459752898a60"
  "image_id" = "ami-0ab02459752898a60"
  "image_location" = "amazon/al2023-ami-2023.6.20241212.0-kernel-6.1-x86_64"
  "image_owner_alias" = "amazon"
  "image_type" = "machine"
  "imds_support" = "v2.0"
  "include_deprecated" = false
  "kernel_id" = ""
  "most_recent" = true
  "name" = "al2023-ami-2023.6.20241212.0-kernel-6.1-x86_64"
  "name_regex" = tostring(null)
  "owner_id" = "137112412989"
  "owners" = tolist([
    "137112412989",
  ])
  "platform" = ""
  "platform_details" = "Linux/UNIX"
  "product_codes" = toset([])
  "public" = true
  "ramdisk_id" = ""
  "root_device_name" = "/dev/xvda"
  "root_device_type" = "ebs"
  "root_snapshot_id" = "snap-0846e1db4a7c52e3a"
  "sriov_net_support" = "simple"
  "state" = "available"
  "state_reason" = tomap({
    "code" = "UNSET"
    "message" = "UNSET"
  })
  "tags" = tomap({})
  "timeouts" = null /* object */
  "tpm_support" = ""
  "usage_operation" = "RunInstances"
  "virtualization_type" = "hvm"
}
ubuntu_ami_details = {
  "architecture" = "x86_64"
  "arn" = "arn:aws:ec2:ap-northeast-1::image/ami-08e7fa5b787fe2608"
  "block_device_mappings" = toset([
    {
      "device_name" = "/dev/sda1"
      "ebs" = tomap({
        "delete_on_termination" = "true"
        "encrypted" = "false"
        "iops" = "0"
        "snapshot_id" = "snap-0647e247c4ece4173"
        "throughput" = "0"
        "volume_size" = "8"
        "volume_type" = "gp3"
      })
      "no_device" = ""
      "virtual_name" = ""
    },
    {
      "device_name" = "/dev/sdb"
      "ebs" = tomap({})
      "no_device" = ""
      "virtual_name" = "ephemeral0"
    },
    {
      "device_name" = "/dev/sdc"
      "ebs" = tomap({})
      "no_device" = ""
      "virtual_name" = "ephemeral1"
    },
  ])
  "boot_mode" = "uefi-preferred"
  "creation_date" = "2024-12-18T09:07:39.000Z"
  "deprecation_time" = "2026-12-18T09:07:39.000Z"
  "description" = "Canonical, Ubuntu, 24.04, amd64 noble image"
  "ena_support" = true
  "executable_users" = tolist(null) /* of string */
  "filter" = toset([
    {
      "name" = "architecture"
      "values" = toset([
        "x86_64",
      ])
    },
    {
      "name" = "name"
      "values" = toset([
        "ubuntu/images/hvm-ssd-gp3/ubuntu-noble-24.04-amd64-server-*",
      ])
    },
    {
      "name" = "virtualization-type"
      "values" = toset([
        "hvm",
      ])
    },
  ])
  "hypervisor" = "xen"
  "id" = "ami-08e7fa5b787fe2608"
  "image_id" = "ami-08e7fa5b787fe2608"
  "image_location" = "amazon/ubuntu/images/hvm-ssd-gp3/ubuntu-noble-24.04-amd64-server-20241218"
  "image_owner_alias" = "amazon"
  "image_type" = "machine"
  "imds_support" = "v2.0"
  "include_deprecated" = false
  "kernel_id" = ""
  "most_recent" = true
  "name" = "ubuntu/images/hvm-ssd-gp3/ubuntu-noble-24.04-amd64-server-20241218"
  "name_regex" = tostring(null)
  "owner_id" = "099720109477"
  "owners" = tolist([
    "099720109477",
  ])
  "platform" = ""
  "platform_details" = "Linux/UNIX"
  "product_codes" = toset([])
  "public" = true
  "ramdisk_id" = ""
  "root_device_name" = "/dev/sda1"
  "root_device_type" = "ebs"
  "root_snapshot_id" = "snap-0647e247c4ece4173"
  "sriov_net_support" = "simple"
  "state" = "available"
  "state_reason" = tomap({
    "code" = "UNSET"
    "message" = "UNSET"
  })
  "tags" = tomap({})
  "timeouts" = null /* object */
  "tpm_support" = ""
  "usage_operation" = "RunInstances"
  "virtualization_type" = "hvm"
}

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