Let’s Encrypt is a free, automated, and open certificate authority (CA),
run for the public’s benefit. One of the features of Let’s Encrypt is
ninety-day lifetimes for certificates. There are many tutorials how to
automate the procedure of updating certificates. All of them have their pros and cons. For example you must manually create
folders and files or stop web-server for several minutes... I think I found
one of the simpliest ways. The main idea is to let Let's Encrypt to start a web-server on...