How to install Discourse in the AWS EC2 Instances(Ubuntu Server LTS)?

Installation
22
  1. Yes, I checked it.
    EC2 Security Groups
    ap-northeast-2.console.aws.amazon.com_ec2_v2_home_region=ap-northeast-2(Laptop with HiDPI screen) (9).png2880×1800 404 KB
  2. Yes.
  3. Asia Pacific (Seoul).