Table of Contents
With Univention Corporate Server 4.2-5, the fifth Point-Release for Univention Corporate Server (UCS) 4.2 is now available. It includes various detail improvements and bug fixes, especially in the areas of Active Directory Compatibility and UCS Management System. The security updates released for UCS 4.2-4 are included in this update.
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 6 GB of disk space. Depending on the scope of the existing installation, the update will require about another 1 GB of disk space for download and installation all packages.
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 (which is generally used for evaluating UCS). The modules opened are logged in 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 with older browsers may experience display or performance issues.
Listed are the changes since UCS 4.2-4:
All security updates issued for UCS 4.2-4 are included:
The following updated packages from Debian Jessie 8.11 are included (Bug 47793): 389-ds-base, adminer, ant, batik, blender, blktrace, bouncycastle, bwm-ng, cgit, cinnamon, confuse, debian-installer-netboot-images, debian-security-support, dh-make-perl, discount, dns-root-data, dojo, dokuwiki, dropbear, git-annex, gosa, gpac, graphicsmagick, kamailio, lava-server, libcgroup, libextractor, libgit2, linux-4.9, linux-latest-4.9, mactelnet, mailman, mariadb-10.0, mercurial, mgetty, mosquitto, network-manager-vpnc, nvidia-graphics-drivers, nvidia-graphics-drivers-legacy-304xx, openjpeg2, otrs2, php-horde-crypt, php-horde-image, phpmyadmin, plexus-archiver, prosody, psensor, python-mimeparse, python-xmltodict, redis, resiprocate, ruby-passenger, ruby-sprockets, ruby-zip, sam2p, slurm-llnl, spice-gtk, spip, squirrelmail, sssd, strongswan, sympa, thunderbird, tomcat-native, tomcat7, tomcat8, twitter-bootstrap3, user-mode-linux, vim-syntastic, virtualbox-guest-additions-iso, wordpress, xen, znc, zookeeper, zsh, zutils
samba/ntlm/auth (ntlm auth) to ntlmv2-only (Bug 47100).
CN=Configuration gets replicated before the main domain partition.
As a result DRS replication could fail (Bug 47749).
samba-tool ntacl sysvolcheck traceback due to /var/lib/samba/netlogon (Bug 47710).