How to renew Let's encrypt certificate with ACMEv2 protocol
26-Mar-2020 1957
Let’s Encrypt has announced in the beginning of year, that it will no longer support ACMEv1 protocol for certificate renewal after June 1. 2020. At my work I run 4 Rails application instances with 12 web sites (domains) and have been using Let’s Encrypt certificates for years. They are automatically renewed every month. All I get is a mail indicating that certificates have been renewed. There are enough differences from ACMEv1 to ACMEv2 protocol, that I had to go back to school and rewrite the whole procedure. It took me few hours to figure it all up so I hope it will save you some time.
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