My domain is: rsb.at
My web server is (include version): Apache 2.24.x
The operating system my web server runs on is (include version): Ubuntu
How can I create a certificate without using Certbot or any other ACME client software?
I used ZeroSSL but they changed their policy and CA so that I have to recreate certificates from scratch.
Addition: I read around a little and learned two things:
a) ACME clients are mandatory (as they are supposed to be more modern)
b) there are several issues with Certbot (the recommended way to install certificates)
Conclusion: I will install certbot and read the source. That will reveal the manual way. If certbot proves to be stable in my situation, I might use the automation later.
Mayby providing a manual way would be helpful after all.