Moin, Nagios mentioned Apache server at xibe02 to be critical. I restartet service => systemctl start httpd @Admins: Please make nagios checks for Apache @ xibe01/02 more frequently! And please try to find out why it crashed (see logs below). Verantwortlicher: SRK Zeitpunkt: 2020-04-12 20:35Uhr Kunden: all xIBE customers (AAA, Tourini, Tropo.de) Info: [Sun Apr 12 18:35:01.956383 2020] [core:notice] [pid 32540] AH00094: Command line: '/usr/sbin/httpd -D FOREGROUND' [Sun Apr 12 19:35:01.473252 2020] [mpm_prefork:notice] [pid 32540] AH00171: Graceful restart requested, doing restart httpd: threads.c:395: krb5int_key_delete: Assertion `destructors_set[keynum] == 1' failed. httpd: threads.c:395: krb5int_key_delete: Assertion `destructors_set[keynum] == 1' failed. httpd: threads.c:395: krb5int_key_delete: Assertion `destructors_set[keynum] == 1' failed. httpd: threads.c:395: krb5int_key_delete: Assertion `destructors_set[keynum] == 1' failed. httpd: threads.c:395: krb5int_key_delete: Assertion `destructors_set[keynum] == 1' failed. [Sun Apr 12 19:35:01.621149 2020] [lbmethod_heartbeat:notice] [pid 32540] AH02282: No slotmem from mod_heartmonitor Assertion failure: 0 == rv, at ../../.././nspr/pr/src/pthreads/ptthread.c:973 [Sun Apr 12 19:35:01.775067 2020] [core:notice] [pid 32540] AH00060: seg fault or similar nasty error detected in the parent process httpd: threads.c:395: krb5int_key_delete: Assertion `destructors_set[keynum] == 1' failed. [Sun Apr 12 20:34:15.619853 2020] [core:notice] [pid 17071] SELinux policy enabled; httpd running as context system_u:system_r:httpd_t:s0 [Sun Apr 12 20:34:15.622636 2020] [suexec:notice] [pid 17071] AH01232: suEXEC mechanism enabled (wrapper: /usr/sbin/suexec) VG Stefan Rank-Kunitz Mit freundlichen Grüßen Stefan Rank-Kunitz - Technical Director - ________________________________________________________ TraSo GmbH Nonnenstraße 42 D-04229 Leipzig Tel.: +49 341 355 740 - 43 E-Mail: s.rank-kunitz@traso.de ________________________________________________________ Handelsregister: Amtsgericht Leipzig, HRB 21850