grep -ni kerb var/log/apache/error_log
7:[Wed May 11 00:00:04.225752 2022] [mpm_prefork:notice] [pid 3051] 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
7171:[Wed May 11 08:02:37.142048 2022] [auth_kerb:debug] [pid 2469760] src/mod_auth_kerb.c(1963): [client 127.0.0.1:45542] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos
7183:[Wed May 11 08:02:37.156603 2022] [http:trace4] [pid 2469760] http_filters.c(955): [client 127.0.0.1:45542] WWW-Authenticate: Basic realm=\\"Checkmk Kerberos Login\\"
7201:[Wed May 11 08:02:37.168596 2022] [auth_kerb:debug] [pid 2517634] src/mod_auth_kerb.c(1963): [client 127.0.0.1:45546] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/_auth/
7220:[Wed May 11 08:02:37.173603 2022] [auth_kerb:debug] [pid 2469760] src/mod_auth_kerb.c(1963): [client 127.0.0.1:45548] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/_auth/
7232:[Wed May 11 08:02:37.182047 2022] [http:trace4] [pid 2517634] http_filters.c(955): [client 127.0.0.1:45546] WWW-Authenticate: Basic realm=\\"Checkmk Kerberos Login\\", referer: https://sg-mone-11/COE/_auth/
7243:[Wed May 11 08:02:37.186334 2022] [http:trace4] [pid 2469760] http_filters.c(955): [client 127.0.0.1:45548] WWW-Authenticate: Basic realm=\\"Checkmk Kerberos Login\\", referer: https://sg-mone-11/COE/_auth/
7261:[Wed May 11 08:02:37.191863 2022] [auth_kerb:debug] [pid 2517634] src/mod_auth_kerb.c(1963): [client 127.0.0.1:45556] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/_auth/
7273:[Wed May 11 08:02:37.204864 2022] [http:trace4] [pid 2517634] http_filters.c(955): [client 127.0.0.1:45556] WWW-Authenticate: Basic realm=\\"Checkmk Kerberos Login\\", referer: https://sg-mone-11/COE/_auth/
7291:[Wed May 11 08:02:37.211668 2022] [auth_kerb:debug] [pid 2469760] src/mod_auth_kerb.c(1963): [client 127.0.0.1:45560] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/_auth/
7303:[Wed May 11 08:02:37.224887 2022] [http:trace4] [pid 2469760] http_filters.c(955): [client 127.0.0.1:45560] WWW-Authenticate: Basic realm=\\"Checkmk Kerberos Login\\", referer: https://sg-mone-11/COE/_auth/
8861:[Wed May 11 08:42:30.491197 2022] [mpm_prefork:notice] [pid 3233252] 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
9063:[Wed May 11 08:42:39.491199 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:44284] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos
9094:[Wed May 11 08:42:39.522775 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:44294] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/_auth/
9115:[Wed May 11 08:42:39.533243 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:44302] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/_auth/
9157:[Wed May 11 08:42:39.559299 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:44308] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/_auth/
9202:[Wed May 11 08:43:03.445219 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:48486] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos
9233:[Wed May 11 08:43:03.481376 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:48510] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/
9254:[Wed May 11 08:43:03.488819 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:48516] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/
9295:[Wed May 11 08:43:03.511884 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:48534] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/
9326:[Wed May 11 08:43:16.705453 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:52964] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos
9357:[Wed May 11 08:43:16.746383 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:52974] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
9378:[Wed May 11 08:43:16.759036 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:52978] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
9419:[Wed May 11 08:43:16.788151 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:52986] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
9450:[Wed May 11 08:43:18.382215 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:53444] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos
9481:[Wed May 11 08:43:18.426460 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:53494] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
9502:[Wed May 11 08:43:18.431707 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:53498] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
9543:[Wed May 11 08:43:18.455338 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:53520] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
9574:[Wed May 11 08:43:18.622189 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:53638] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos
9605:[Wed May 11 08:43:18.647398 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:53642] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
9626:[Wed May 11 08:43:18.653023 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:53644] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
9667:[Wed May 11 08:43:18.680404 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:53646] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
9698:[Wed May 11 08:43:18.860394 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:53662] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos
9729:[Wed May 11 08:43:18.888257 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:53664] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
9750:[Wed May 11 08:43:18.894101 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:53666] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
9791:[Wed May 11 08:43:18.921479 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:53670] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
9822:[Wed May 11 08:43:19.077074 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:53796] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos
9853:[Wed May 11 08:43:19.106487 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:53828] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
9874:[Wed May 11 08:43:19.113141 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:53844] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
9916:[Wed May 11 08:43:19.140313 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:53866] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
9947:[Wed May 11 08:43:19.278198 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:54018] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos
9978:[Wed May 11 08:43:19.307894 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:54048] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
9999:[Wed May 11 08:43:19.313924 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:54052] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
10040:[Wed May 11 08:43:19.336144 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:54090] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
10071:[Wed May 11 08:43:19.489700 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:54176] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos
10102:[Wed May 11 08:43:19.514292 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:54178] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
10123:[Wed May 11 08:43:19.520859 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:54180] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
10164:[Wed May 11 08:43:19.543268 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:54190] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
10195:[Wed May 11 08:43:19.688274 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:54292] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos
10226:[Wed May 11 08:43:19.722705 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:54328] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
10247:[Wed May 11 08:43:19.728208 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:54338] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
10288:[Wed May 11 08:43:19.749767 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:54364] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
10319:[Wed May 11 08:43:19.877898 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:54498] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos
10350:[Wed May 11 08:43:19.915406 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:54552] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
10371:[Wed May 11 08:43:19.925750 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:54562] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
10412:[Wed May 11 08:43:19.954002 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:54592] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
10443:[Wed May 11 08:43:20.071933 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:54700] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos
10474:[Wed May 11 08:43:20.107015 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:54736] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
10495:[Wed May 11 08:43:20.114457 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:54750] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
10536:[Wed May 11 08:43:20.139279 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:54774] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
10567:[Wed May 11 08:43:20.272909 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:54906] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos
10598:[Wed May 11 08:43:20.298208 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:54932] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
10619:[Wed May 11 08:43:20.310678 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:54942] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
10660:[Wed May 11 08:43:20.332452 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:54966] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
10691:[Wed May 11 08:43:20.487546 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:55096] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos
10722:[Wed May 11 08:43:20.513847 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:55110] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
10743:[Wed May 11 08:43:20.519344 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:55120] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
10784:[Wed May 11 08:43:20.546897 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:55160] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
10816:[Wed May 11 08:43:20.754353 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:55374] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos
10847:[Wed May 11 08:43:20.784455 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:55388] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
10868:[Wed May 11 08:43:20.792318 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:55410] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
10909:[Wed May 11 08:43:20.814488 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:55422] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
10940:[Wed May 11 08:43:21.279525 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:55868] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos
10971:[Wed May 11 08:43:21.309061 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:55898] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
10992:[Wed May 11 08:43:21.316682 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:55910] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
11033:[Wed May 11 08:43:21.341553 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:55936] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
11064:[Wed May 11 08:43:21.363584 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:55956] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
11095:[Wed May 11 08:43:22.000255 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:56524] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos
11126:[Wed May 11 08:43:22.025104 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:56534] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
11147:[Wed May 11 08:43:22.031627 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:56536] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
11188:[Wed May 11 08:43:22.052572 2022] [auth_kerb:debug] [pid 3233256] src/mod_auth_kerb.c(1963): [client 127.0.0.1:56540] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos, referer: https://sg-mone-11/COE/auth_/register_agent
11219:[Wed May 11 08:43:25.045408 2022] [auth_kerb:debug] [pid 3234469] src/mod_auth_kerb.c(1963): [client 127.0.0.1:56780] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos