Dns server not updating
For instance, you may want to create a certificate using the webroot plugin for authentication and the apache plugin for installation, perhaps because you use a proxy or CDN for SSL and only want to secure the connection between them and your origin server, which cannot use the tls-sni-01 challenge due to the intermediate proxy.tells Certbot to create a separate, unrelated certificate with the same domains as an existing certificate.The standalone plugin does not rely on any other server software running on the machine where you obtain the certificate.To obtain a certificate using a “standalone” webserver, you can use the standalone plugin by including on the command line.An example request made to your web server would look like: The Nginx plugin has been distributed with Certbot since version 0.9.0 and should work for most configurations.
These plugins can modify your webserver’s configuration to serve your website over HTTPS using certificates obtained by certbot.
This command attempts to renew any previously-obtained certificates that expire in less than 30 days.
The same plugin and options that were used at the time the certificate was originally issued will be used for the renewal attempt, unless you specify other plugins or options.
This certificate is saved completely separately from the prior one.
Most users will not need to issue this command in normal circumstances.