Smbd not installed with fresh UCS install. Manual install causes followup problems

UCS - Univention Corporate Server
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A couple of things to consider here:

  1. UCS uses metapackages to provide appropriate integration and configuration for services like samba.
  2. Installation of packages should be done with univention-install to use the recommended options for apt.
  3. UCS has a concept of server roles. Some packages are only suitable for installation of particular roles.
  4. For high level installation of services it is recommended to use univention-app which takes the server role of the particular system into consideration. e.g. univention-app list can be used to see what apps are available (and where they are installed in the domain).
  5. To be able to run SMB fileserver services, at least one system in the domain needs to serve as AD domain controller. To achieve that univention-app install samba4 can be run, e.g. on the UCS Primary Directory Node. That system is then automatically able to serve files (e.g. the sysvol for GPOs).
  6. Redundancy can be increased by installing the samba4 app on additional UCS Directory Nodes (of role Backup or Replica).
  7. Pure fileservers (without AD DC functionality) can be joined by installing by running univention-app install samba-memberserver on UCS Managed Nodes (aka memberservers).
  8. UCS has a domain management approach that is based on the Unviention Directory Manager (frontend for OpenLDAP) and a Web management interface Univention Management Console. File shares can be configured there and are then persisted in LDAP and replicated into smb.conf configuration (via included subfiles) on the respective nodes. Univention Corporate Server for Debian and Ubuntu Administrators — UCS 5.0 for Debian and Ubuntu Administrators may be interesting if new to these concepts.
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