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How to create ec2 on exist vpc by cloud formation

2022/07/01に公開

AWS

How to create ec2 on exist vpc by cloud formation

This is demo about how to create ec2 on exist vpc by cloud formation

agenda

Prerequisite
Preparing template by yaml
Create ec2 by cloud formation
Delete the cloud formation stack

Prerequisite

you need to create under the resources before try demo
- vpc
- key pair
- AMI
This demo created by ap-northeast-1

Preparing template by yaml

Most Parameter value should be valid resources
you need to prepare template in your local enviroment

AWSTemplateFormatVersion: "2010-09-09"
Description: Create EC2 Instance
Parameters:
  InstanceType:
    Description: WebServer EC2 instance type
    Type: String
    Default: t2.micro
    AllowedValues:
    - t1.micro
    - t2.nano
    - t2.micro
    - t2.small
    - t2.medium
    - t2.large
    ConstraintDescription: must be a valid EC2 instance type
  SubnetId:
    Type: String
    Default: your SubnetId
    AllowedValues:
    - your SubnetId
    - your SubnetId
    ConstraintDescription: must be a valid SbunetID
  EnviromentType:
    Description: the enviroment type
    Type: String
    Default: test
    AllowedValues:
      - test
      - prod
    ConstraintDescription: must be a test or prod
  KeyName: 
    Description : Name of an existing EC2 KeyPair.
    Type: AWS::EC2::KeyPair::KeyName
    ConstraintDescription : Can contain only ASCII characters.
  SSHLocation:
    Description: IP address range that can be used to SSH to the EC2 instances
    Type: String
    MinLength: '9'
    MaxLength: '18'
    Default: 0.0.0.0/0
    AllowedPattern: (\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})/(\d{1,2})
    ConstraintDescription: must be a valid IP CIDR range of the form x.x.x.x/x.


Mappings:
  RegionMap:
    ap-northeast-1:
      test: your amiID
      prod: your amiID
    ap-southeast-2:
      prod: your amiID
      test: your amiID


Description: Create EC2 Instance
Resources:
  MyEC2Instance:
    Type: AWS::EC2::Instance
    Properties: 
      ImageId: !FindInMap [RegionMap, !Ref "AWS::Region", !Ref EnviromentType]
      InstanceType: !Ref InstanceType
      SubnetId: !Ref SubnetId
      BlockDeviceMappings:
        - DeviceName: /dev/xvda
          Ebs:
            VolumeType: gp2
            VolumeSize: 10
      Tags:
      - Key: Name
        Value: zenn-ec2-test
      KeyName: !Ref KeyName
      SecurityGroupIds:
         - !GetAtt "InstanceSecurityGroup.GroupId"

  InstanceSecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: connect with ssh 
      VpcId: vpc-03d05352402ca114e
      SecurityGroupIngress:
        -
          IpProtocol: tcp
          FromPort: 22
          ToPort: 22
          CidrIp: !Ref SSHLocation

Create ec2 by cloud formation

Create cloud formation stack
Access to ap-northeast-1.console.aws.amazon.com/cloudformation/home?region=ap-northeast-1
Click the 「スタックの作成」
Select the 「新しいリソースを使用(標準)」
Select the 「テンプレートの準備完了」
Select the 「テンプレートファイルのアップロード」
Click the 「ファイルの選択」
- then chose your template
Chose the parameter value
SubnetId is masked should be selceted your subnetid
This stage you don't have to change any value
Scroll to the bottom of page
Click the 「次へ」
This stage is checked value which is your selected
If there is fine click the 「スタックの作成」　bottom of page
Cloud Formation start to create resource
Wait few miniutes
Complete to create resource
Access to https://ap-northeast-1.console.aws.amazon.com/ec2/v2/home?region=ap-northeast-1#Instances:v=3
you can see the instance

Delete the cloud formation stack

Access to ap-northeast-1.console.aws.amazon.com/cloudformation/home?region=ap-northeast-1
Check the cloud formation stack
Click the 「削除」
Click the 「スタックの削除」