EC2 Instance resource with User Data

aws_cfn_ec2_userdata.yml

  UserEc2Instance:
    Type: AWS::EC2::Instance
    Properties:
      InstanceType: t2.micro
      IamInstanceProfile: !Ref EC2IamInstanceProfile
      ImageId: ami-0a887e401f7654935
      KeyName: !Ref UserKey
      SubnetId: !Ref Subnet
      Tags:
        -
          Key: Name
          Value: !Join [ '-', [ !Ref Username, 'ec2-instance' ] ]
      UserData: 
        Fn::Base64: !Sub | 
          #!/bin/bash
          yum update -y
          amazon-linux-extras install epel -y
          yum install s3fs-fuse -y
          chmod 777 /etc/fuse.conf
          echo "user_allow_other" >> /etc/fuse.conf
          mkdir /home/ec2-user/s3-mount
          chmod 777 /home/ec2-user/s3-mount
          chown -R $USER /home/ec2-user/s3-mount
          cd /
          s3fs ${UserS3Bucket} /home/ec2-user/s3-mount -o allow_other -o iam_role=${EC2IamRole} -o nonempty
          chown -R ec2-user:ec2-user /tmp
          chown -R ec2-user:ec2-user /home/ec2-user/s3-mount