Running sudo systemctl list-units --failed shows the following failed units
root@mh-ucs:/# **sudo systemctl list-units --failed**
UNIT LOAD ACTIVE SUB DESCRIPTION
● slapd.service loaded failed failed LSB: OpenLDAP standalone server (Lightweight Directory Access Protocol)
● univention-maintenance.service loaded failed failed LSB: Univention Updater
LOAD = Reflects whether the unit definition was properly loaded.
ACTIVE = The high-level unit activation state, i.e. generalization of SUB.
SUB = The low-level unit activation state, values depend on unit type.
2 loaded units listed. Pass --all to see loaded but inactive units, too.
To show all installed unit files use 'systemctl list-unit-files'.
root@mh-ucs:/# sudo systemctl status univention-maintenance.service
● univention-maintenance.service - LSB: Univention Updater
Loaded: loaded (/etc/init.d/univention-maintenance; generated; vendor preset: enabled)
Active: failed (Result: exit-code) since Wed 2021-09-29 14:46:44 BST; 17min ago
Docs: man:systemd-sysv-generator(8)
Process: 7706 ExecStart=/etc/init.d/univention-maintenance start (code=exited, status=1/FAILURE)
CPU: 295ms
Sep 29 14:46:44 mh-ucs systemd[1]: Starting LSB: Univention Updater...
Sep 29 14:46:44 mh-ucs univention-maintenance[7706]: Checking network for Univention maintenance...ldap[mh-ucs.ucs.surreyphysio.co.uk]...failed.
Sep 29 14:46:44 mh-ucs systemd[1]: univention-maintenance.service: Control process exited, code=exited status=1
Sep 29 14:46:44 mh-ucs systemd[1]: Failed to start LSB: Univention Updater.
Sep 29 14:46:44 mh-ucs systemd[1]: univention-maintenance.service: Unit entered failed state.
Sep 29 14:46:44 mh-ucs systemd[1]: univention-maintenance.service: Failed with result 'exit-code'.
root@mh-ucs:/# sudo systemctl status slapd.service
● slapd.service - LSB: OpenLDAP standalone server (Lightweight Directory Access Protocol)
Loaded: loaded (/etc/init.d/slapd; generated; vendor preset: enabled)
Active: failed (Result: exit-code) since Wed 2021-09-29 14:47:01 BST; 17min ago
Docs: man:systemd-sysv-generator(8)
Process: 8105 ExecStart=/etc/init.d/slapd start (code=exited, status=1/FAILURE)
CPU: 178ms
Sep 29 14:47:01 mh-ucs slapd[8143]: slapd stopped.
Sep 29 14:47:01 mh-ucs slapd[8143]: connections_destroy: nothing to destroy.
Sep 29 14:47:01 mh-ucs slapd[8105]: Starting ldap server(s): slapd ...failed.
Sep 29 14:47:01 mh-ucs slapschema[8146]: Loaded metadata from "/usr/share/univention-management-console/saml/idp/ucs-sso.ucs.surreyphysio.co.uk.xml
Sep 29 14:47:01 mh-ucs slapschema[8146]: DIGEST-MD5 common mech free
Sep 29 14:47:01 mh-ucs slapd[8105]: .
Sep 29 14:47:01 mh-ucs systemd[1]: slapd.service: Control process exited, code=exited status=1
Sep 29 14:47:01 mh-ucs systemd[1]: Failed to start LSB: OpenLDAP standalone server (Lightweight Directory Access Protocol).
Sep 29 14:47:01 mh-ucs systemd[1]: slapd.service: Unit entered failed state.
Sep 29 14:47:01 mh-ucs systemd[1]: slapd.service: Failed with result 'exit-code'.
And running journalctl -xe shows
root@mh-ucs:/# journalctl -xe
Sep 29 15:05:49 mh-ucs smbd[3206]: pam_env(samba:session): No such user!?
Sep 29 15:05:50 mh-ucs smbd[3206]: pam_unix(samba:session): session closed for user UCS+MH-MGMT$
Sep 29 15:05:50 mh-ucs smbd[3233]: pam_env(samba:session): No such user!?
Sep 29 15:05:50 mh-ucs smbd[3233]: pam_unix(samba:session): session closed for user UCS+MH-MGMT$
Sep 29 15:05:50 mh-ucs smbd[3229]: pam_env(samba:session): No such user!?
Sep 29 15:05:50 mh-ucs smbd[3229]: pam_unix(samba:session): session closed for user UCS+MH-MGMT$
Sep 29 15:05:51 mh-ucs PAM-univentionsambadomain[3259]: continuing as user MH-MGMT$
Sep 29 15:05:51 mh-ucs smbd[3259]: pam_unix(samba:session): session opened for user MH-MGMT$ by (uid=0)
Sep 29 15:05:51 mh-ucs smbd[3259]: pam_mkhomedir(samba:session): User unknown.
Sep 29 15:05:51 mh-ucs smbd[3261]: pam_env(samba:session): No such user!?
Sep 29 15:05:51 mh-ucs smbd[3261]: pam_unix(samba:session): session closed for user UCS+MH-MGMT$
Sep 29 15:05:51 mh-ucs PAM-univentionsambadomain[3271]: continuing as user MH-MGMT$
Sep 29 15:05:51 mh-ucs smbd[3271]: pam_unix(samba:session): session opened for user MH-MGMT$ by (uid=0)
Sep 29 15:05:52 mh-ucs smbd[3271]: pam_mkhomedir(samba:session): User unknown.
Sep 29 15:05:52 mh-ucs smbd[3259]: pam_env(samba:session): No such user!?
Sep 29 15:05:52 mh-ucs smbd[3259]: pam_unix(samba:session): session closed for user UCS+MH-MGMT$
Sep 29 15:05:52 mh-ucs smbd[3275]: pam_env(samba:session): No such user!?
Sep 29 15:05:52 mh-ucs smbd[3275]: pam_unix(samba:session): session closed for user UCS+MH-MGMT$
Sep 29 15:05:52 mh-ucs PAM-univentionsambadomain[3292]: continuing as user MH-MGMT$
Sep 29 15:05:52 mh-ucs smbd[3292]: pam_unix(samba:session): session opened for user MH-MGMT$ by (uid=0)
Sep 29 15:05:52 mh-ucs smbd[3292]: pam_mkhomedir(samba:session): User unknown.
Sep 29 15:05:52 mh-ucs smbd[3271]: pam_env(samba:session): No such user!?
Sep 29 15:05:52 mh-ucs smbd[3271]: pam_unix(samba:session): session closed for user UCS+MH-MGMT$
Sep 29 15:05:52 mh-ucs smbd[3296]: pam_env(samba:session): No such user!?
Sep 29 15:05:53 mh-ucs smbd[3296]: pam_unix(samba:session): session closed for user UCS+MH-MGMT$
Sep 29 15:05:53 mh-ucs PAM-univentionsambadomain[3313]: continuing as user MH-MGMT$
Sep 29 15:05:53 mh-ucs smbd[3313]: pam_unix(samba:session): session opened for user MH-MGMT$ by (uid=0)
Sep 29 15:05:53 mh-ucs smbd[3313]: pam_mkhomedir(samba:session): User unknown.
Sep 29 15:05:53 mh-ucs smbd[3292]: pam_env(samba:session): No such user!?
Sep 29 15:05:53 mh-ucs smbd[3292]: pam_unix(samba:session): session closed for user UCS+MH-MGMT$
Sep 29 15:05:53 mh-ucs smbd[3317]: pam_env(samba:session): No such user!?
Sep 29 15:05:53 mh-ucs smbd[3317]: pam_unix(samba:session): session closed for user UCS+MH-MGMT$
Sep 29 15:05:53 mh-ucs PAM-univentionsambadomain[3334]: continuing as user MH-MGMT$
Sep 29 15:05:53 mh-ucs smbd[3334]: pam_unix(samba:session): session opened for user MH-MGMT$ by (uid=0)
Sep 29 15:05:53 mh-ucs smbd[3334]: pam_mkhomedir(samba:session): User unknown.
Sep 29 15:05:54 mh-ucs smbd[3313]: pam_env(samba:session): No such user!?
Sep 29 15:05:54 mh-ucs smbd[3313]: pam_unix(samba:session): session closed for user UCS+MH-MGMT$
Sep 29 15:05:54 mh-ucs smbd[3338]: pam_env(samba:session): No such user!?
Sep 29 15:05:54 mh-ucs smbd[3338]: pam_unix(samba:session): session closed for user UCS+MH-MGMT$
Sep 29 15:05:54 mh-ucs PAM-univentionsambadomain[3355]: continuing as user MH-MGMT$
Sep 29 15:05:54 mh-ucs smbd[3355]: pam_unix(samba:session): session opened for user MH-MGMT$ by (uid=0)
Sep 29 15:05:54 mh-ucs smbd[3355]: pam_mkhomedir(samba:session): User unknown.
Sep 29 15:05:54 mh-ucs smbd[3334]: pam_env(samba:session): No such user!?
Sep 29 15:05:54 mh-ucs smbd[3334]: pam_unix(samba:session): session closed for user UCS+MH-MGMT$
Sep 29 15:05:54 mh-ucs smbd[3359]: pam_env(samba:session): No such user!?
Sep 29 15:05:54 mh-ucs smbd[3359]: pam_unix(samba:session): session closed for user UCS+MH-MGMT$
Sep 29 15:05:55 mh-ucs PAM-univentionsambadomain[3376]: continuing as user MH-MGMT$
Sep 29 15:05:55 mh-ucs smbd[3376]: pam_unix(samba:session): session opened for user MH-MGMT$ by (uid=0)
Sep 29 15:05:55 mh-ucs smbd[3376]: pam_mkhomedir(samba:session): User unknown.
Sep 29 15:05:55 mh-ucs smbd[3355]: pam_env(samba:session): No such user!?
Sep 29 15:05:55 mh-ucs smbd[3355]: pam_unix(samba:session): session closed for user UCS+MH-MGMT$
Sep 29 15:05:55 mh-ucs smbd[3380]: pam_env(samba:session): No such user!?
Sep 29 15:05:55 mh-ucs smbd[3380]: pam_unix(samba:session): session closed for user UCS+MH-MGMT$
Sep 29 15:05:55 mh-ucs PAM-univentionsambadomain[3397]: continuing as user MH-MGMT$
Sep 29 15:05:55 mh-ucs smbd[3397]: pam_unix(samba:session): session opened for user MH-MGMT$ by (uid=0)
Sep 29 15:05:55 mh-ucs smbd[3397]: pam_mkhomedir(samba:session): User unknown.
Sep 29 15:05:55 mh-ucs smbd[3376]: pam_env(samba:session): No such user!?
Sep 29 15:05:56 mh-ucs smbd[3376]: pam_unix(samba:session): session closed for user UCS+MH-MGMT$
Sep 29 15:05:56 mh-ucs smbd[3401]: pam_env(samba:session): No such user!?
Sep 29 15:05:56 mh-ucs smbd[3401]: pam_unix(samba:session): session closed for user UCS+MH-MGMT$
Sep 29 15:05:56 mh-ucs smbd[3397]: pam_env(samba:session): No such user!?
Sep 29 15:05:56 mh-ucs smbd[3397]: pam_unix(samba:session): session closed for user UCS+MH-MGMT$
The UCS Server is unable to start now, could anyone assist?