caddyserver
Enterprise self purchased CA certificate automatic update
I am an IT administrator for a company. We have purchased SSL certificates from other CAs, and they are sent to us annually after the SSL certificates are issued. If I deploy an HTTP/FTP/SMB service on the intranet to download SSL certificates, can Caddy support automatic SSL certificate renewal in this scenario?
What do you mean by "support automatic SSL certificate renewal" exactly?
If Caddy isn't the one initiating a new certificate from a CA to use it, then the certificate has to be loaded in configuration just like with traditional web servers. And then before the certificate expires, you have to load the new one in.
You can have a script place your certificate on disk and then reload Caddy of course, to "automate" it. Is that what you're asking?
Maybe you're looking for get_certificate http (inside the tls directive)? https://caddyserver.com/docs/caddyfile/directives/tls#certificate-managers
