Nubus for UCS - Operation Manual# Contents: 1. Introduction 1.1. Understanding Nubus and UCS 1.1.1. What is Nubus? 1.1.2. What is UCS? 1.1.3. How Nubus and UCS work together 1.2. Key concepts 1.2.1. Domain concept 1.2.2. Management UI 1.2.3. LDAP directory service 1.2.4. Policy concept 1.2.5. Univention App Center 1.2.6. Listener/notifier replication 1.3. Feedback 2. System deployment 2.1. Installation methods 2.1.1. Installation image download 2.1.2. Physical and virtual machine installation 2.1.3. Text mode installation 2.1.4. Cloud deployment 2.1.5. VMware-specific considerations 2.1.6. Secure Boot 2.2. Initial system configuration 2.2.1. Select the installation mode 2.2.2. Select the language 2.2.3. Select the location 2.2.4. Select the keyboard layout 2.2.5. Set up network configuration 2.2.6. Define the root password 2.2.7. Partition the hard drive 2.2.8. Finish installation 2.3. Domain setup 2.3.1. Naming convention for hostnames 2.3.2. Mode: Create a new UCS domain 2.3.3. Mode: Join an existing Active Directory domain 2.3.4. Mode: Join an existing UCS domain 2.3.5. Confirm the installation settings 2.4. Steps after the installation 2.4.1. Open the portal 2.4.2. License import after installation 2.5. Troubleshooting for installation problems 3. Domain infrastructure 3.1. Understanding system roles 3.1.1. Primary Directory Node 3.1.2. Backup Directory Node 3.1.3. Replica Directory Node 3.1.4. Managed Node 3.1.5. Ubuntu 3.1.6. Linux 3.1.7. macOS 3.1.8. Domain Trust Account 3.1.9. Windows Domaincontroller 3.1.10. Windows Workstation and Windows Server 3.1.11. IP client 3.2. Redundancy and failover for the Primary Directory Node 3.2.1. Fault-tolerant domain setup 3.2.2. Backup to Primary promotion 4. Management interface 4.1. Authentication 4.1.1. Sign-in 4.1.2. Refresh browser tabs on sign-out 4.1.3. Single sign-on 4.2. Activate UCS license 4.2.1. About UCS licenses 4.2.2. View license information 4.2.3. Activate a license 4.2.4. Register for a personalized Core Edition license 4.2.5. License key limits 4.3. Customize web interface themes 4.3.1. Switch light and dark theme 4.3.2. Create a custom theme 5. Lifecycle 5.1. Nubus for UCS versioning 5.1.1. Understand version numbering 5.1.2. Distinguish release types and cycles 5.1.3. Understanding the update hierarchy 5.1.4. Plan for support and maintenance periods 5.1.5. Stay informed about updates 5.2. Update strategies 5.2.1. Planning updates in multiserver environments 5.2.2. Update methods 5.2.3. Post-processing after release updates 5.2.4. Troubleshooting update problems 5.3. Perform updates 5.3.1. Understand pre-update checks 5.3.2. Understand post-update cleanup 5.4. Package installation and management 5.4.1. Choose your installation method 5.4.2. Installation through Univention App Center 5.4.3. Installation through Management UI 5.4.4. Installation from command line 5.4.5. Automate tasks around app actions with hook scripts 5.4.6. Centralized package management with policies 5.5. Package maintenance policy 5.5.1. How to create a maintenance policy 5.5.2. Understanding maintenance policy fields 5.5.3. Related policies 5.6. Local repository servers 5.6.1. Create and update a local repository 5.6.2. Configure the repository server 5.6.3. Maintain the local repository 5.6.4. Troubleshooting repository problems 5.7. Univention App Center 5.7.1. Finding and viewing applications 5.7.2. How to install applications 5.7.3. Multi-host installation 5.7.4. Docker applications 5.7.5. After installation 5.7.6. Application lifecycle and updates 5.7.7. App Center troubleshooting 5.8. Software monitor 5.8.1. Features and functions 5.8.2. Configure the software monitor 6. Identity and Access Management 6.1. Password management 6.1.1. Password policies 6.1.2. Samba domain password policy 6.1.3. End User Self Service 6.2. Group management 6.2.1. Group creation and assignment 6.2.2. Nested groups 6.2.3. Group caching 6.2.4. Active Directory group synchronization 6.2.5. Group overlay module 6.3. User creation wizard 6.3.1. Require primary email address in user creation wizard 6.3.2. Deactivate user creation wizard 6.3.3. Control account properties for user setup 6.3.4. Restart the UMC server 7. System administration 7.1. Kernel 7.1.1. Kernel packages 7.1.2. Version management 7.1.3. Kernel modules and drivers 7.2. Boot manager 7.2.1. Boot loading process 7.2.2. Kernel selection 7.2.3. Configuration 7.3. Network configuration 7.3.1. Basic network configuration 7.3.2. Advanced network configurations 7.4. Configure proxy settings through UCR variables 7.4.1. Configure proxy access 7.4.2. Exclude domains from proxy access 7.4.3. Session behavior 7.4.4. Integration with Nubus for UCS tools UCR variable reference Document changelog Year 2026 Year 2025 Glossary Bibliography