Setup Let’s Encrypt SSL on Google Appengine

Let’s Encrypt is a new Certificate Authority: It’s free, automated, and open.

“Let’s Encrypt” is a really great initiative (and a tool) that, I hope, will improve security of the modern web. It have very nice client, that will do all work automatically (unfortunately it’s not yet supported by Google Appengine). It’s supposed to run on target server, where it can validate domain and configure your Apache/Nginx/etc. But in of Appengine we don’t have such server, so have to generate and upload SSL certificate manually. I’ll show you how.
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