I have a web server running multiple sites on nginx. They are secured by certificates from Lets Encrypt. For some reason, long ago, I installed the certs for one site using
standalone rather than the
certbot renew runs, it always fails when that domain is due for renewal because nginx is running on port 80. I have to stop nginx, and re-run certbot, and then restart nginx.
When I run
certbot renew --nginx it complains that HTTP validation fails for those domains. I'm having difficulty figuring out how I can tell certbot to revalidate the domains by HTTP and switch them to the nginx plugin.