2024年版private-isu構築メモ

Nov 17, 2024
fleeting isucon

背景

ISUCON14の練習の為catatsuy/private-isuを自分のAWSに構築しようとしたが、 tohutohu/private-isu.yaml - gistが構築できなかったのでメモ。

問題点

tohutohu/private-isu.yaml - gist のCloudFormationをそのまま起動しようとするとAMIがないと怒られる。

Name	ImageId	InstanceType
server	ami-0d92a4724cae6f07b	c6i.large
bench	ami-0582a2a7fbe79a30d	c6i.xlarge

AMIの検索は以下から行う。 https://docs.aws.amazon.com/ja_jp/AWSEC2/latest/UserGuide/finding-an-ami.html

修正方法

catatsuy/private-isu#ami に動くAMIが記述されているのでそちらに修正し、費用面を考慮して InstanceType を以下のように修正した。

Name	ImageId	InstanceType
server	ami-047fdc2b851e73cad	t2.medium
bench	ami-037be39355baf1f2e	t2.medium

また、 KeyPairName は不要なので削除した。

実際のCloudFormationは以下。

AWSTemplateFormatVersion: '2010-09-09'
Description: private-isu template
Parameters:
  GitHubUsername:
    Description: "GitHub Username for SSH public key"
    Type: String
Resources:
  VPC:
    Type: AWS::EC2::VPC
    Properties:
      CidrBlock: '192.168.0.0/16'
  MySubnet:
    Type: AWS::EC2::Subnet
    Properties:
      VpcId: !Ref VPC
      CidrBlock: '192.168.1.0/24'
      AvailabilityZone: ap-northeast-1a
  MyInternetGateway:
    Type: AWS::EC2::InternetGateway
  AttachGateway:
    Type: AWS::EC2::VPCGatewayAttachment
    Properties:
      VpcId: !Ref VPC
      InternetGatewayId: !Ref MyInternetGateway
  MyRouteTable:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref VPC
  PublicRoute:
    Type: AWS::EC2::Route
    DependsOn: AttachGateway
    Properties:
      RouteTableId: !Ref MyRouteTable
      DestinationCidrBlock: 0.0.0.0/0
      GatewayId: !Ref MyInternetGateway
  SubnetRouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref MySubnet
      RouteTableId: !Ref MyRouteTable
  MySecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: Enable SSH, HTTP, HTTPS access
      VpcId: !Ref VPC
      SecurityGroupIngress:
        - IpProtocol: tcp
          FromPort: 22
          ToPort: 22
          CidrIp: 0.0.0.0/0
        - IpProtocol: tcp
          FromPort: 80
          ToPort: 80
          CidrIp: 0.0.0.0/0
        - IpProtocol: tcp
          FromPort: 443
          ToPort: 443
          CidrIp: 0.0.0.0/0
        - IpProtocol: -1
          CidrIp: 192.168.0.0/16
  ServerInstance:
    Type: AWS::EC2::Instance
    Properties:
      InstanceType: t2.medium
      ImageId: ami-047fdc2b851e73cad
      SubnetId: !Ref MySubnet
      PrivateIpAddress: '192.168.1.10'
      SecurityGroupIds:
        - !Ref MySecurityGroup
      UserData:
        Fn::Base64: !Sub |
          #!/bin/bash
          GITHUB_USER=${GitHubUsername}
          mkdir -p /home/isucon/.ssh
          curl -s https://github.com/$GITHUB_USER.keys >> /home/isucon/.ssh/authorized_keys
          chown -R isucon:isucon /home/isucon/.ssh
          chmod 600 /home/isucon/.ssh/authorized_keys
  BenchmarkerInstance:
    Type: AWS::EC2::Instance
    Properties:
      InstanceType: t2.medium
      ImageId: ami-037be39355baf1f2e
      SubnetId: !Ref MySubnet
      PrivateIpAddress: '192.168.1.20'
      SecurityGroupIds:
        - !Ref MySecurityGroup
      UserData:
        Fn::Base64: !Sub |
          #!/bin/bash
          GITHUB_USER=${GitHubUsername}
          mkdir -p /home/isucon/.ssh
          curl -s https://github.com/$GITHUB_USER.keys >> /home/isucon/.ssh/authorized_keys
          chown -R isucon:isucon /home/isucon/.ssh
          chmod 600 /home/isucon/.ssh/authorized_keys
  ServerEIP:
    Type: AWS::EC2::EIP
  BenchmarkerEIP:
    Type: AWS::EC2::EIP
  ServerEIPAssociation:
    Type: AWS::EC2::EIPAssociation
    Properties:
      InstanceId: !Ref ServerInstance
      EIP: !Ref ServerEIP
  BenchmarkerEIPAssociation:
    Type: AWS::EC2::EIPAssociation
    Properties:
      InstanceId: !Ref BenchmarkerInstance
      EIP: !Ref BenchmarkerEIP

終わりに

実際に練習するなら指定された環境のまま起動した方が良いだろうが、あくまで練習として private-isu を立ち上げたいだけという今回の用途ではこれで十分。