Using LetsEncrypt with Amazon Linux 2023

00_get_certificate.sh

#!/usr/bin/env bash
# Place in .platform/hooks/postdeploy directory
sudo certbot -n -d YOURDOMAINHERE --nginx --agree-tos --email YOUREMAILHERE

00_install_certbot.config

# Place in .ebextensions directory at project root
container_commands:
  00_install_deps:
    command: "sudo dnf install python3 augeas-libs"
    ignoreErrors: true
  10_create_venv:
    command: "sudo python3 -m venv /opt/certbot"
    ignoreErrors: true
  20_update_pip:
    command: "sudo /opt/certbot/bin/pip install --upgrade pip"
    ignoreErrors: true
  30_install_certbot:
    command: "sudo /opt/certbot/bin/pip install certbot certbot-nginx"
    ignoreErrors: true
  40_link_certbot:
    command: "sudo ln -s /opt/certbot/bin/certbot /usr/bin/certbot"
    ignoreErrors: true

10_open_https_port.config

# Place in .ebextensions directory
Resources:
  sslSecurityGroupIngress:
    Type: AWS::EC2::SecurityGroupIngress
    Properties:
      GroupId: {"Fn::GetAtt" : ["AWSEBSecurityGroup", "GroupId"]}
      IpProtocol: tcp
      ToPort: 443
      FromPort: 443
      CidrIp: 0.0.0.0/0

README.md

Files to use LetsEncrypt on Elastic Beanstalk (Amazon Linux 2023)

If you want to use Elastic Beanstalk's free tier with a single instance, you can use LetsEncrypt to get a free SSL certificate for your instances. Placing these files inside the appropriate directories will let you automatically install a certificate with every deploy.

Inside of your code, you should have the following structure:

.
├── index.js
├── package-lock.json
├── package.json
├── .ebextensions
│   ├── 00_install_certbot.config
│   └── 10_open_https_port.config
└── .platform
    └── hooks
        └── postdeploy
            └── 00_get_certificate.sh

Credit to Marcos Escandell for the Amazon Linux 2 instructions that led me to here.