Install Let’s Encrypt to Create SSL Certificates on Ubuntu

(Linode: Install Let’s Encrypt to Create SSL Certificates)
[Update 2018 03 06: You might want to look at Certbot]

Before You Begin

  1. Check for updates
    sudo apt-get update && sudo apt-get upgrade
  2. Check if git is installed
    which git
    If not install git
    sudo apt-get install git
    Password
    y
  3. Open a port for Let’s Encrypt
    sudo ufw allow 443
    [Update 2018 03 06: (you might need to allow port 80 as well for some reason)]

Install Let’s Encrypt

  1. Download and install Let’s Encrypt
    sudo git clone https://github.com/letsencrypt/letsencrypt /opt/letsencrypt
  2. Navigate to the new /opt/letsencrypt directory:
    cd /opt/letsencrypt

Create an SSL Certificate

  1. Run Let’s Encrypt including each domain to be covered with a -d
    • sudo -H ./letsencrypt-auto certonly --standalone -d example.com -d www.example.com
    • password
    • a good email address
    • Agree
    • Success!
      IMPORTANT NOTES: - Congratulations! Your certificate and chain have been saved at/etc/letsencrypt/live/example.com/fullchain.pem. Your cert will expire on 2017-xx-xx. To obtain a new or tweaked version of this certificate in the future, simply run letsencrypt-auto again. To non-interactively renew *all* of your certificates, run "letsencrypt-auto renew" - If you like Certbot, please consider supporting our work by:Donating to ISRG / Let's Encrypt:   https://letsencrypt.org/donateDonating to EFF:   https://eff.org/donate-le
  2. Setup auto renewals of certificates
    • sudo crontab -e
    • First run select nano as editor
    • Add the line to the bottom of the file to run at 02:30 every Monday, pausing nginx to allow access to port 443 as required.
      30 2 * * 1 /opt/letsencrypt/letsencrypt-auto renew --quiet --pre-hook "sudo service nginx stop" --post-hook "sudo service nginx start"
      (I HAVEN’T confirmed this is working yet, but it should be)

Mini series

  1. Setting up a server at Linode
  2. Install Let’s Encrypt to Create SSL Certificates on Ubuntu
  3. Setting up MongoDB on Ubuntu
  4. Setting up nginx on Ubuntu for parse-server
  5. Setting up parse-server on Ubuntu

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