univention-register-network-address returns an error in case the IP address is already registered to the host. IMHO the UMC call should show idempotent behavior. If for some reason the UMC call cannot do this, then the script should properly handle it, confirming that the task is actually done and return without error. Current behavior: root@replica:~# /usr/sbin/univention-register-network-address --verbose BadRequest: 400 on master50.ucs50pt1.dev (command/ip/change): {'status': 400, 'message': 'The IP address is already in use by host record(s) for: replica', 'traceback': None, 'location': 'https://master50.ucs50pt1.dev/univention/command'}
the service is always in an unclean state when DHCP is used, which is a nuisance when looking for (other) errors: # systemctl status univention-network-common.service ● univention-network-common.service - Register current IP addresses in LDAP directory Loaded: loaded (/lib/systemd/system/univention-network-common.service; enabled; vendor preset: enabled) Active: failed (Result: exit-code) since Tue 2023-05-23 13:43:01 CEST; 3h 51min ago Process: 2892 ExecStart=/usr/sbin/univention-register-network-address (code=exited, status=1/FAILURE) Main PID: 2892 (code=exited, status=1/FAILURE) Mai 23 13:43:00 os0-136 systemd[1]: Starting Register current IP addresses in LDAP directory... Mai 23 13:43:01 os0-136 systemd[1]: univention-network-common.service: Main process exited, code=exited, status=1/FAILURE Mai 23 13:43:01 os0-136 systemd[1]: univention-network-common.service: Failed with result 'exit-code'. Mai 23 13:43:01 os0-136 systemd[1]: Failed to start Register current IP addresses in LDAP directory.
A variant where the hosts fails with its S4 SRV record: # /usr/sbin/univention-register-network-address --verbose BadRequest: 400 on master095.autotest095.test (command/ip/change): { 'status': 400, 'message': 'The IP address is already in use by host record(s) for: gc._msdcs, DomainDnsZones, ForestDnsZones, slave095', 'traceback': None, 'location': 'https://master095.autotest095.test/univention/command/ip' } # samba-tool dns query localhost "$(dnsdomainname)" @ ALL -U Administrator%univention Name=, Records=7, Children=0 NS: master095.autotest095.test. (flags=600000f0, serial=1, ttl=900) NS: slave095.autotest095.test. (flags=600000f0, serial=1, ttl=900) SOA: serial=87, refresh=28800, retry=7200, expire=604800, minttl=3600, ns=master095.autotest095.test., email=root.autotest095.test. (flags=600000f0, serial=87, ttl=10800) A: 10.201.0.223 (flags=600000f0, serial=1, ttl=900) A: 10.201.2.108 (flags=600000f0, serial=1, ttl=900) AAAA: fda1:dead:beef:0000:f816:3eff:fe9f:8820 (flags=600000f0, serial=1, ttl=900) AAAA: fda1:dead:beef:0000:f816:3eff:fee9:a276 (flags=600000f0, serial=1, ttl=900) Name=_kerberos, Records=1, Children=0 TXT: "AUTOTEST095.TEST" (flags=f0, serial=1, ttl=900) Name=_msdcs, Records=1, Children=0 NS: master095.autotest095.test. (flags=f0, serial=1, ttl=900) Name=_sites, Records=0, Children=1 Name=_tcp, Records=0, Children=7 Name=_udp, Records=0, Children=2 Name=DomainDnsZones, Records=0, Children=2 Name=ForestDnsZones, Records=0, Children=2 Name=master095, Records=2, Children=0 A: 10.201.0.223 (flags=f0, serial=1, ttl=900) AAAA: fda1:dead:beef:0000:f816:3eff:fe9f:8820 (flags=f0, serial=1, ttl=900) Name=SLAVE095, Records=2, Children=0 A: 10.201.2.108 (flags=f0, serial=1, ttl=900) AAAA: fda1:dead:beef:0000:f816:3eff:fee9:a276 (flags=f0, serial=1, ttl=900) Name=ucs-sso, Records=1, Children=0 A: 10.201.0.223 (flags=f0, serial=1, ttl=900)
Customer affected 2025042821000159 systemctl status univention-network-common.service ● univention-network-common.service - Register current IP addresses in LDAP directory Loaded: loaded (/lib/systemd/system/univention-network-common.service; enabled; vendor preset: enabled) Active: failed (Result: exit-code) since Mon 2025-04-28 10:33:51 CEST; 23min ago Process: 6740 ExecStart=/usr/sbin/univention-register-network-address (code=exited, status=1/FAILURE) Main PID: 6740 (code=exited, status=1/FAILURE) Apr 28 10:33:50 me01 systemd[1]: Starting Register current IP addresses in LDAP directory... Apr 28 10:33:51 me01 systemd[1]: univention-network-common.service: Main process exited, code=exited, status=1/FAILURE Apr 28 10:33:51 me01 systemd[1]: univention-network-common.service: Failed with result 'exit-code'. Apr 28 10:33:51 me01 systemd[1]: Failed to start Register current IP addresses in LDAP directory.
/var/log/univention/management-console-module-ipchange.log): ------------------------------------------------------------------- 28.04.25 10:33:50.982 DEBUG_INIT 28.04.25 10:33:51.279 MODULE ( PROCESS ) : Setting user LDAP DN: 'cn=e132-me01,cn=memberserver,cn=computers,ou=uni,dc=edu,dc=vention,dc=de' 28.04.25 10:33:51.279 MODULE ( PROCESS ) : Setting auth type: None 28.04.25 10:33:51.279 MODULE ( PROCESS ) : Received request 'ip/change': ('e132-me01$', None, None, 'de_DE.UTF-8') 28.04.25 10:33:51.292 MODULE ( PROCESS ) : The IP address is already in use by host record(s) for: me01