Automating IPMI 2.0 management Let's Encrypt certificate update

Today, I'm combining to previous post into a new one. I've written earlier about going fully Let's Encrypt and the problems I have with them. Now that I'm using them, and those certs have ridiculously short life-span, I need to keep automating all possible updates. That would include the IPMI 2.0 interface on my Supermicro SuperServer.

Since Aten, the manufacturer of the IPMI-chip chose not to make the upload of a new certificate automateable (is that a word?), I had to improvise something. I chose to emulate web browser in a simple Python-script doing first the user login via HTTP-interface, and then upload the new X.509 certificate and the appropriate private key for it. Finally the IPMI BMC will be rebooted. Now its automated!

So, the resulting script is at https://gist.github.com/HQJaTu/963db9af49d789d074ab63f52061a951. Go get it!