auto-remediate-wrong-availability-zone

create-instance.yaml

Parameters:
  instanceType:
    Description: Instance type
    Type: String
    Default: r6i.xlarge
  availabilityZone:
    Description: Availability Zone
    Type: String
    Default: us-east-1i
  vpcId:
    Description: VPC ID
    Type: String
    Default: <insert-default>
Resources:
  myEC2Instance:
    Type: AWS::EC2::Instance
    Properties:
      ImageId: ami-0a313d6098716f372
      InstanceType: !Ref instanceType
      Monitoring: true
      AvailabilityZone: !Ref availabilityZone
      SecurityGroupIds:
        - !Ref secGroupName
      UserData: !Base64 |
        #!/bin/bash -ex
        # put your script here
      Tags:
        - Key: key
          Value: value
  secGroupName:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupName: sg1
      GroupDescription: sg1
      VpcId: !Ref vpcId
      SecurityGroupIngress:
        - IpProtocol: tcp
          FromPort: 22
          ToPort: 22
          CidrIp: 0.0.0.0/0
      SecurityGroupEgress:
        - IpProtocol: tcp
          FromPort: 0
          ToPort: 65535
          CidrIp: 0.0.0.0/0

Update the default VPC ID
aws cloudformation create-stack --stack-name myteststack --template-body file://create-instance.yaml --disable-rollback --region us-east-1
aws cloudformation wait stack-create-complete --stack-name myteststack --region us-east-1
aws cloudformation update-stack --stack-name myteststack --template-body file://create-instance.yaml --region us-east-1 --disable-rollback --parameters ParameterKey=availabilityZone,ParameterValue=us-east-1a