PR #109 Follow-up: Document new variable inside other variable.

introduce certbot_create_extra_args (for custom RSA key size)

README.md

@@ -63,7 +63,7 @@ A list of domains (and other data) for which certs should be generated. You can
 
     certbot_create_command: "{{ certbot_script }} certonly --standalone --noninteractive --agree-tos --email {{ cert_item.email | default(certbot_admin_email) }} -d {{ cert_item.domains | join(',') }}"
 
-The `certbot_create_command` defines the command used to generate the cert.
+The `certbot_create_command` defines the command used to generate the cert. See the full default command inside `defaults/main.yml` for a full example—and you can easily add in extra arguments that are not in the default command with the `certbot_create_extra_args` variable.
 
 #### Standalone Certificate Generation
 

defaults/main.yml

@@ -35,6 +35,7 @@ certbot_create_command: >-
   --email {{ cert_item.email | default(certbot_admin_email) }}
   {{ '--webroot-path ' if certbot_create_method == 'webroot'  else '' }}
   {{ cert_item.webroot | default(certbot_webroot) if certbot_create_method == 'webroot' else '' }}
+  {{ certbot_create_extra_args }}
   -d {{ cert_item.domains | join(',') }}
   {{ '--pre-hook /etc/letsencrypt/renewal-hooks/pre/stop_services'
     if certbot_create_standalone_stop_services and certbot_create_method == 'standalone'