Okay, Dankeschön.
Bezogen auf die Site
grep -ni kerb var/log/apache/error_log
7:[Mon May 09 00:00:02.123675 2022] [mpm_prefork:notice] [pid 169551] AH00163: Apache/2.4.41 (Ubuntu) mod_wsgi/4.7.0 Python/3.8 mod_fcgid/2.3.9 mod_auth_kerb/5.4 configured -- resuming normal operations
Global
22:[Mon May 09 00:03:37.155534 2022] [mpm_event:notice] [pid 3634387:tid 140707948694592] AH00489: Apache/2.4.41 (Ubuntu) mod_auth_kerb/5.4 OpenSSL/1.1.1f configured -- resuming normal operations