To upgrade from an older LetsEncrypt to Certbot on Ubuntu 14.04, install Certbot and run the auto-upgrading script.
Move the script to a suitable location:
Run the Installer
Move into the containing directory and run the installer:
Certbot picks up on existing configurations pretty well. To run the auto-renew dialog:
This brings up an ncurses window.
Note that all domains on the server will be pre-selected for domain renewal.
Be careful here - if you inadvertently leave a domain selected where the site hasn’t been set up for SSL, you can end up with a broken site. This is because all internal links will be pointing to the “http://” version, and Certbot will have created and enabled a vhosts configuration for the “https://” version.
After selecting domains for cert renewal/registration, you will also get the option to choose whether HTTPS access is required or optional. “Required” is generally a good choice.
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