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AWS CloudFormationでCloud9を構築しよう

Last updated at Posted at 2021-02-04

はじめに

AWS CloudFormationを利用してVPC構築のテンプレートのサンプルです。

テンプレートの概要が分からない場合は、はじめてのAWS CloudFormationテンプレートを理解するを参考にしてください。

コードはGitHubにもあります。

今回は、akane というシステムの dev 環境を想定しています。
同じ構成で違う環境を作成する場合は、{環境名}-parameters.jsonを別途作成します。

ディレクトリ構成
    akane (システム)
      ├── network (スタック)
      │   ├── dev-parameters.json (dev 環境のパラメータ)
      │   └── network.yml (CFnテンプレート)
      └── cloud9 (スタック)
          ├── dev-parameters.json (dev 環境のパラメータ)
          └── cloud9.yml (CFnテンプレート)

AWS リソース構築内容

  1. networkスタック
    - VPC (10.0.0.0/16)
    - Publicサブネット1 (10.0.1.0/24)
    - Publicサブネット2 (10.0.2.0/24)
    - インターネットゲートウェイ
    - Publicルートテーブル

  2. Cloud9スタック
    - Cloud9

実行環境の準備

AWS CloudFormationを動かすためのAWS CLIの設定を参考にしてください。

AWS リソース構築手順

  1. 下記を実行してスタックを作成

    ./create_stacks.sh
    
  2. 下記を実行してスタックを削除

    ./delete_stacks.sh
    

構築テンプレート

1. networkスタック

network.yml
AWSTemplateFormatVersion: 2010-09-09
Description: Network For Akane

# Metadata:

Parameters:
  SystemName:
    Type: String
    AllowedPattern: '[a-zA-Z0-9-]*'
  EnvType:
    Description: Environment type.
    Type: String
    AllowedValues: [all, dev, stg, prod]
    ConstraintDescription: must specify all, dev, stg, or prod.
  VPCCidrBlock:
    Type: String
    AllowedPattern: (\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})/16
  PublicSubnet1:
    Type: String
    AllowedPattern: (\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})/24
  PublicSubnet2:
    Type: String
    AllowedPattern: (\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})/24

Mappings: 
  AzMap: 
    ap-northeast-1:
      1st: ap-northeast-1a
      2nd: ap-northeast-1c
      3rd: ap-northeast-1d

# Conditions

# Transform

Resources:
  # VPC作成
  akaneVPC:
    Type: AWS::EC2::VPC
    Properties:
      CidrBlock: !Ref VPCCidrBlock
      EnableDnsSupport: true
      EnableDnsHostnames: true
      InstanceTenancy: default
      Tags:
        - Key: Name
          Value: !Sub
          - ${SystemName}-${EnvType}-vpc
          - {SystemName: !Ref SystemName, EnvType: !Ref EnvType}
        - Key: SystemName
          Value: !Ref SystemName
        - Key: EnvType
          Value: !Ref EnvType

###########################################################################
# Publicサブネット関連
###########################################################################
  # Publicサブネット作成
  akanePublicSubnet1:
    Type: AWS::EC2::Subnet
    Properties:
      VpcId: !Ref akaneVPC
      CidrBlock: !Ref PublicSubnet1
      AvailabilityZone: !FindInMap [AzMap, !Ref AWS::Region, 1st]
      MapPublicIpOnLaunch: true
      Tags:
        - Key: Name
          Value: !Sub
          - ${SystemName}-${EnvType}-public-subnet1
          - {SystemName: !Ref SystemName, EnvType: !Ref EnvType}
        - Key: SystemName
          Value: !Ref SystemName
        - Key: EnvType
          Value: !Ref EnvType
  akanePublicSubnet2:
    Type: AWS::EC2::Subnet
    Properties:
      VpcId: !Ref akaneVPC
      CidrBlock: !Ref PublicSubnet2
      AvailabilityZone: !FindInMap [AzMap, !Ref AWS::Region, 2nd]
      MapPublicIpOnLaunch: true
      Tags:
        - Key: Name
          Value: !Sub
          - ${SystemName}-${EnvType}-public-subnet2
          - {SystemName: !Ref SystemName, EnvType: !Ref EnvType}
        - Key: SystemName
          Value: !Ref SystemName
        - Key: EnvType
          Value: !Ref EnvType
  # インターネットゲートウェイ作成
  akaneInternetGateway:
    Type: AWS::EC2::InternetGateway
    Properties:
      Tags:
        - Key: Name
          Value: !Sub
          - ${SystemName}-${EnvType}-igw
          - {SystemName: !Ref SystemName, EnvType: !Ref EnvType}
        - Key: SystemName
          Value: !Ref SystemName
        - Key: EnvType
          Value: !Ref EnvType
  # インターネットゲートウェイをVPCにアタッチ
  akaneVPCGatewayAttachment:
    Type: AWS::EC2::VPCGatewayAttachment
    Properties:
      VpcId: !Ref akaneVPC
      InternetGatewayId: !Ref akaneInternetGateway
  # Publicルートテーブル作成
  akanePublicRouteTable:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref akaneVPC
      Tags:
        - Key: Name
          Value: !Sub
          - ${SystemName}-${EnvType}-public-route
          - {SystemName: !Ref SystemName, EnvType: !Ref EnvType}
        - Key: SystemName
          Value: !Ref SystemName
        - Key: EnvType
          Value: !Ref EnvType
  # Publicルートテーブル サブネット関連付け
  akanePublicSubnetRouteTableAssociation1:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref akanePublicSubnet1
      RouteTableId: !Ref akanePublicRouteTable
  akanePublicSubnetRouteTableAssociation2:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref akanePublicSubnet2
      RouteTableId: !Ref akanePublicRouteTable
  # Publicルートテーブル ルートにインターネットゲートウェイを関連付ける
  akanePublicRoute:
    Type: AWS::EC2::Route
    Properties:
      RouteTableId: !Ref akanePublicRouteTable
      DestinationCidrBlock: 0.0.0.0/0
      GatewayId: !Ref akaneInternetGateway

Outputs:
  akaneVPC:
    Value: !Ref akaneVPC
    Export:
      Name: !Sub
        - ${SystemName}-${EnvType}-vpc
        - {SystemName: !Ref SystemName, EnvType: !Ref EnvType}
  akanePublicSubnet1:
    Value: !Ref akanePublicSubnet1
    Export:
      Name: !Sub
        - ${SystemName}-${EnvType}-public-subnet1
        - {SystemName: !Ref SystemName, EnvType: !Ref EnvType}
  akanePublicSubnet2:
    Value: !Ref akanePublicSubnet2
    Export:
      Name: !Sub
        - ${SystemName}-${EnvType}-public-subnet2
        - {SystemName: !Ref SystemName, EnvType: !Ref EnvType}
  akanePublicRouteTable:
    Value: !Ref akanePublicRouteTable
    Export:
      Name: !Sub
        - ${SystemName}-${EnvType}-public-route-table
        - {SystemName: !Ref SystemName, EnvType: !Ref EnvType}
dev-parameters.json
{
    "Parameters": [
        {
            "ParameterKey": "SystemName",
            "ParameterValue": "akane"
        },
        {
            "ParameterKey": "EnvType",
            "ParameterValue": "dev"
        },
        {
            "ParameterKey": "VPCCidrBlock",
            "ParameterValue": "10.0.0.0/16"
        },
        {
            "ParameterKey": "PublicSubnet1",
            "ParameterValue": "10.0.0.0/24"
        },
        {
            "ParameterKey": "PublicSubnet2",
            "ParameterValue": "10.0.1.0/24"
        }
    ]
}

2. Cloud9スタック

cloud9.yml
AWSTemplateFormatVersion: 2010-09-09
Description: Cloud9 For Akane

# Metadata:

Parameters:
  SystemName:
    Type: String
    AllowedPattern: '[a-zA-Z0-9-]*'
  EnvType:
    Description: Environment type.
    Type: String
    AllowedValues: [dev, stg, prod]
    ConstraintDescription: must specify dev, stg or prod.
  InstanceType:
    Type: String
    AllowedPattern: '^[a-z][1-9][.][a-z0-9]+$'

Mappings: 
  AzMap: 
    ap-northeast-1:
      1st: ap-northeast-1a
      2nd: ap-northeast-1d
      3rd: ap-northeast-1c

# Conditions

# Transform

Resources:
  # Cloud9を作成
  akaneCloud9:
    Type: AWS::Cloud9::EnvironmentEC2
    Properties: 
      AutomaticStopTimeMinutes: 30
      ConnectionType: CONNECT_SSH
      Description: !Sub
        - ${SystemName}-${EnvType}-cloud9
        - {SystemName: !Ref SystemName, EnvType: !Ref EnvType}
      InstanceType: !Ref InstanceType
      Name: !Sub
        - ${SystemName}-${EnvType}-cloud9
        - {SystemName: !Ref SystemName, EnvType: !Ref EnvType}
      SubnetId:
        Fn::ImportValue: !Sub
          - ${SystemName}-${EnvType}-public-subnet1
          - {SystemName: !Ref SystemName, EnvType: !Ref EnvType}
      Tags:
        - Key: SystemName
          Value: !Ref SystemName
        - Key: EnvType
          Value: !Ref EnvType   

Outputs:
  akaneCloud9:
    Value: !GetAtt akaneCloud9.Arn
    Export:
      Name: !Sub
        - ${SystemName}-${EnvType}-cloud9-arn
        - {SystemName: !Ref SystemName, EnvType: !Ref EnvType}
dev-parameters.json
{
    "Parameters": [
        {
            "ParameterKey": "SystemName",
            "ParameterValue": "akane"
        },
        {
            "ParameterKey": "EnvType",
            "ParameterValue": "dev"
        },
        {
            "ParameterKey": "InstanceType",
            "ParameterValue": "t2.micro"
        }
    ]
}

3. 実行ファイル

create_stacks.sh
#!/bin/sh
SYSTEM_NAME=akane
ENV_TYPE=dev

function create_stack() {
STACK_NAME=$1
aws cloudformation create-stack \
--stack-name ${SYSTEM_NAME}-${ENV_TYPE}-${STACK_NAME} \
--template-body file://./${SYSTEM_NAME}/${STACK_NAME}/${STACK_NAME}.yml \
--cli-input-json file://./${SYSTEM_NAME}/${STACK_NAME}/${ENV_TYPE}-parameters.json

aws cloudformation wait stack-create-complete \
--stack-name ${SYSTEM_NAME}-${ENV_TYPE}-${STACK_NAME}
}

create_stack network
create_stack cloud9
delete_stacks.sh
#!/bin/sh
SYSTEM_NAME=akane
ENV_TYPE=dev

function delete_stack() {
STACK_NAME=$1
aws cloudformation delete-stack \
--stack-name ${SYSTEM_NAME}-${ENV_TYPE}-${STACK_NAME}

aws cloudformation wait stack-delete-complete \
--stack-name ${SYSTEM_NAME}-${ENV_TYPE}-${STACK_NAME}
}

delete_stack cloud9
delete_stack network
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