Keep same public key after renewal

[jurgis]

Hello, can someone explain how to keep same public key after renewal?
Should i add something in config, in [renewalparams]?

CentOS 8
Virtualmin

[_az]

There are a few options for doing this:

1. To make this change for a single certificate, you may add this to [renewalparams] in the /etc/letsencrypt/renewal/*.conf file:

   reuse_key = True
   

2. When issuing or renewing a certificate, you can use --reuse-key on the command line, which will be remembered the next time.

3. To always apply this change for current and future certificates, you can add this to /etc/letsencrypt/cli.ini:

   reuse-key = True 
   

Note that the syntax in (1) and (3) differ slightly.