Table of Contents
With Univention Corporate Server 4.3-5, the fifth point release of Univention Corporate Server (UCS) 4.3 is now available. It provides several feature improvements and extensions, new properties as well as various improvements and bugfixes. Here is an overview of the most important changes:
Samba was updated to version 4.10.
With 4.3-5 the update to Debian point release 9.11 is completed.
Various security updates have been integrated into UCS 4.3-5, e.g. Samba, the Linux kernel and Dovecot. A complete list of security and package updates is available in Chapter 6.
During the update some services in the domain may not be available temporarily, that is why the update should occur in a maintenance window. It is recommended to test the update in a separate test environment prior to the actual update. The test environment should be identical to the production environment. Depending on the system performance, network connection and the installed software the update will take between 20 minutes and several hours.
In environments with more than one UCS system, the update order of the UCS systems must be borne in mind:
The authoritative version of the LDAP directory service is maintained on the master domain controller and replicated to all the remaining LDAP servers of the UCS domain. As changes to the LDAP schema can occur during release updates, the master domain controller must always be the first system to be updated during a release update.
Starting with UCS 4.0, installation DVD are only provided for the x86 64 bit architecture (amd64). Existing 32 bit UCS 3 systems can still be updated to UCS 4.0 through the online repository or by using update DVD. The 32 bit architecture will be supported over the entire UCS 4 maintenance period.
It must be checked whether sufficient disk space is available. A standard installation requires a minimum of 10 GB of disk space. The update requires approximately 4 GB additional disk space to download and install the packages, depending on the size of the existing installation.
For the update, a login should be performed on the system's local console as user root, and the update should be initiated there.
Alternatively, the update can be conducted using Univention Management Console.
Remote updating via SSH is not recommended as this may result in the update procedure being canceled, e.g., if the network connection is interrupted.
In consequence, this can affect the system severely.
If updating should occur over a network connection nevertheless, it must be verified that the update continues in case of disconnection from the network.
This can be achieved, e.g., using the tools screen and at. These tools are installed on all UCS system roles by default.
Following the update, new or updated join scripts need to be executed.
This can be done in two ways:
Either using the UMC module or by running the command
univention-run-join-scripts as user root.
Subsequently the UCS system needs to be restarted.
Anonymous usage statistics on the use of Univention Management Console are collected when using the UCS Core Edition. The modules opened get logged to an instance of the web traffic analysis tool Piwik. This makes it possible for Univention to tailor the development of Univention Management Console better to customer needs and carry out usability improvements.
This logging is only performed when the UCS Core Edition license is used. The license status can be verified via the menu entry of the user menu in the upper right corner of Univention Management Console. If is listed under , this version is in use. When a regular UCS license is used, no usage statistics are collected.
Independent of the license used, the statistics generation can be deactivated by setting the Univention Configuration Registry variable umc/web/piwik to false.
WebKit, Konqueror and QtWebKit are shipped in the maintained branch of the UCS repository, but not covered by security support. WebKit is primarily used for displaying HTML help pages etc. Firefox should be used as web browser.
Univention Management Console uses numerous JavaScript and CSS functions to display the web interface. Cookies need to be permitted in the browser. The following browsers are recommended:
Chrome as of version 37
Firefox as of version 38
Internet Explorer as of version 11
Safari and Safari Mobile as of version 9
Users running older browsers may experience display or performance issues.
Listed are the changes since UCS 4.3-4:
All security updates issued for UCS 4.3-4 are included:
The following updated packages from Debian 9.11 are included (Bug 50313): base-files, basez, biomaj-watcher, bird, bogl, chaosreader, c-icap-modules, corekeeper, dansguardian, dar, debian-archive-keyring, debian-installer-netboot-images, debian-installer, dosbox, fence-agents, fig2dev, fribidi, fusiondirectory, geant321, gettext, gocode, groonga, gsoap, gthumb, havp, icu, jackson-databind, koji, lemonldap-ng, libapreq2, libclamunrar, libconvert-units-perl, libdatetime-timezone-perl, libevent-rpc-perl, libgovirt, librecad, libsdl2-image, libthrift-java, libtk-img, libu2f-host, linux-latest, liquidsoap, llvm-toolchain-7, minissdpd, miniupnpd, mitmproxy, monkeysphere, nasm-mozilla, ncbi-tools6, neovim, nginx, node-growl, node-ws, opendmarc, openssh, open-vm-tools, passwordsafe, pound, prelink, python-clamav, redis, reportbug, resiprocate, ruby-mini-magick, sash, signing-party, slurm-llnl, t-digest, tenshi, thunderbird, tzdata, usbutils, xymon, yubico-piv-tool, z3, zfs-auto-snapshot, zsh
The following packages have been moved to the maintained repository of UCS: exempi (Bug 49479), libiptcdata (Bug 49479), numad (Bug 49548), tracker (Bug 49479)
samba_dnsupdate with --use-samba-tool instead of --local if Univention Configuration Registry variable samba4/join/dnsupdate is active (for UCS@school with Samba 4.10) (Bug 49482).
samba-tool dbcheck --reindex on update to Samba 4.10 (Bug 49479).