Kerberos SMB/CIFS

We have a SSO/SAML enabled Nextcloud 14. (selinux enabled)
For some reason we are not able to get kerberos auth working for external storage (SMB/CIFS)
Logging is not telling us some more information.
Is there a seperated logfile for kerberos smb problems ?
Has someone get this working ?

Kind Regard,

Gert

Gert, did you succeed in getting Kerberos with SMB/CIFS working?

no ;-(
very frustrating…

Unfortunately I personally cannot provide much information on it, except to point to a description which was part of the Nextcloud 12 documentation.

https://docs.nextcloud.com/server/12/admin_manual/configuration_server/sso_configuration.html

Based on open issue tickets there seems to be an issue with PHP 7.3: