I checked the older mails regarding not auto-renewing Letsencrypt certificates… but I’m not sure, whether that helps. I have a DNS entry for nextcloud.mydomain.com, which works. I also installed a TLS certificate from Letsencrypt, which ended yesterday. Up to now it was automatically renewed, but now it’s not any more.
Two weeks ago I received an email from Letsencrypt that they stop the notification service via email… which did not bother me, because if the renewal itself works, the email is not that important for me.
But it seems that the update does not work any more. I thought that I maybe could delete the certificate and re–request ist… but there was an error message containing the three other certificates
Port 80/tcp was still forwarded to the very old server, I changed that. then I disabled and re-enabled the certificate in the Nextcloud app… this did not help right away… I’ll wait till tommorrow.
Hard reset of the browser did not help… the openssl command pointed me to the myfritz.net certificate
I have a different issue open… and ordered the Unifi Cloud Gateway which was recommended… to avoid the Fritz certificate. I think I’ll have to install that during the weekend… although it worked with the Letsencrypt certificate up to this morning, when that cert expired.
If you want, follow the Release Notes instructions to switch to port 443-based challenge:
New TLS-ALPN-01 default ACME challenge format – Let’s Encrypt TLS certificates are now obtained using the TLS-ALPN-01 challenge type through TCP port 443. Port 80 is no longer used by new installations of NethServer 8 core. Existing systems retain the previous HTTP-01 challenge type and still require port 80 to be open. – Release notes — NS8 documentation