Set Up Lets Encrypt on Ubuntu 16.04

setup-lets-encrypt.sh

# Find the repo
sudo add-apt-repository ppa:certbot/certbot
sudo apt-get update

# Get cert bot
sudo apt-get install python-certbot-apache

# The certbot Let’s Encrypt client is now ready to use.

# Setup cert for one domain
sudo certbot --apache -d example.com
# Multiple domain setup - For this example, the base domain will be example.com.
sudo certbot --apache -d example.com -d www.example.com

# When the installation is finished, you should be able to find the generated 
# certificate files at /etc/letsencrypt/live. You can verify the status of your SSL
# certificate with the following link (don’t forget to replace example.com with your base domain):
# https://www.ssllabs.com/ssltest/analyze.html?d=example.com&latest


# Let’s Encrypt certificates only last for 90 days. However, the certbot package
# we installed takes care of this for us by running certbot renew twice a day via
# a systemd timer. On non-systemd distributions this functionality is provided by 
# a cron script placed in /etc/cron.d. The task runs twice daily and will renew any
# certificate that’s within thirty days of expiration.

# Test dry run 
sudo certbot renew --dry-run


# Original Post
# https://www.digitalocean.com/community/tutorials/how-to-secure-apache-with-let-s-encrypt-on-ubuntu-16-04