Systemdiagnose - KDC Erreichbarkeit

UCS - Univention Corporate Server
,
#1

Hallo …

ich benötige Hilfe zu folgendem/n Problem/en:

System UCS Version 5.0-2 errata476

Systemdiagnose zeigt Folgendes:

Problem: KDC Erreichbarkeit

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/dns/inet.py", line 117, in is_multicast
    first = maybe_ord(dns.ipv4.inet_aton(text)[0])
  File "/usr/lib/python3/dist-packages/dns/ipv4.py", line 52, in inet_aton
    raise dns.exception.SyntaxError
dns.exception.SyntaxError: Text input is malformed.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/dns/inet.py", line 121, in is_multicast
    first = maybe_ord(dns.ipv6.inet_aton(text)[0])
  File "/usr/lib/python3/dist-packages/dns/ipv6.py", line 155, in inet_aton
    raise dns.exception.SyntaxError
dns.exception.SyntaxError: Text input is malformed.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/univention/management/console/modules/diagnostic/__init__.py", line 270, in execute
    ret = execute(umc_module, **kwargs)
  File "/usr/lib/python3/dist-packages/univention/management/console/modules/diagnostic/plugins/22_kdc_service.py", line 323, in run
    kdc_to_check = list(resolve_kdc_record('tcp', domainname))
  File "/usr/lib/python3/dist-packages/univention/management/console/modules/diagnostic/plugins/22_kdc_service.py", line 307, in resolve_kdc_record
    result = dns.resolver.query(kerberos_dns_fqdn, 'SRV')
  File "/usr/lib/python3/dist-packages/dns/resolver.py", line 1102, in query
    lifetime)
  File "/usr/lib/python3/dist-packages/dns/resolver.py", line 913, in query
    source_port=source_port)
  File "/usr/lib/python3/dist-packages/dns/query.py", line 325, in udp
    q.keyring, q.mac, ignore_trailing)
  File "/usr/lib/python3/dist-packages/dns/query.py", line 261, in receive_udp
    (dns.inet.is_multicast(destination[0]) and
  File "/usr/lib/python3/dist-packages/dns/inet.py", line 124, in is_multicast
    raise ValueError
ValueError

Dies wiederum ist Ursache oder Wirkung (?) dafür:

# systemctl status univention-dhcp.service
Unit univention-dhcp.service could not be found.

# systemctl status isc-dhcp-server.service
● isc-dhcp-server.service - ISC DHCP Server for IPv4
   Loaded: loaded (/etc/init.d/isc-dhcp-server; generated)
  Drop-In: /lib/systemd/system/isc-dhcp-server.service.d
           └─univention-dhcp.conf
   Active: activating (auto-restart) (Result: exit-code) since Tue 2022-11-08 08:02:54 CET; 8s ago
     Docs: man:systemd-sysv-generator(8)
           man:dhcpd(8)
  Process: 19778 ExecStartPre=/bin/touch /var/lib/dhcp/dhcpd.leases (code=exited, status=0/SUCCESS)
  Process: 19779 ExecStartPre=/usr/sbin/dhcpd -t -4 -q -cf /etc/dhcp/dhcpd.conf (code=exited, status=1/FAILURE)

Der Dienst univention-dhcp ist gestoppt und kann nicht manuell gestartet werden:

Fehlernachricht des Servers:

Der Dienst univention-dhcp konnte nicht gestartet werden:
● isc-dhcp-server.service - ISC DHCP Server for IPv4
Loaded: loaded (/etc/init.d/isc-dhcp-server; generated)
Drop-In: /lib/systemd/system/isc-dhcp-server.service.d
└─univention-dhcp.conf
Active: activating (auto-restart) (Result: exit-code) since Tue 2022-11-08 08:11:36 CET; 16ms ago
Docs: man:systemd-sysv-generator(8)
man:dhcpd(8)
Process: 22091 ExecStartPre=/bin/touch /var/lib/dhcp/dhcpd.leases (code=exited, status=0/SUCCESS)
Process: 22092 ExecStartPre=/usr/sbin/dhcpd -t -4 -q -cf /etc/dhcp/dhcpd.conf (code=exited, status=1/FAILURE)

Der Server steht in einer Grundschule. Ich benötige dringend Hilfe … wo ich hier ansetzen muss.
Bitte; hat jemand eine Idee ?

Danke - DM

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