<> == Status == SL7 at Zeuthen will become the default and recommended Linux version: * Users and groups are encouraged to test their software packages for SL7-compliance A '''test system''' is available: A virtual machine with an alias name of '''el7.zeuthen.desy.de''' has been set up with a WGS configuration. It is meant to be used for tests and development, not for running production jobs. Another way to try SL7 is to use the [[Singularity]] container, which is possible on WGSs, compute nodes and even Linux desktops. There are currently no plans to provide SL7-based desktop systems. === SL7 presentations === * [[attachment:Linux-20170509-2up.pdf|Technical Seminar, Zeuthen, 2017-05-09]] == Changes w.r.t. SL6 from the user's point of view == === Enhancements === === General changes === * The '''AFS sysname list''' is `'amd64_rhel70' 'amd64_rhel60' 'amd64_rhel50' 'i586_rhel50' 'amd64_linux26' 'i386_linux26'`. Note that making use of the AFS sysname (list) is deprecated. Other methods, like parsing the output of `lsb_release`, are recommended to find the right binaries in AFS. Future Linux releases in Zeuthen may drop the list and just provide the default of `amd64_linux24`. === Changes regarding software === * The new default compiler version is GCC 4.8.5 == Known Problems == * When started remotely (after ssh login), many applications will print a warning {{{ WARNING **: Couldn't connect to accessibility bus: Failed to connect to socket /tmp/dbus-NEN7dYkiMc: Connection refused }}} There's no serious problem here (unless you depend on "assistive technologies"), but the messages are annoying. They can be suppressed by setting the environment variable `NO_AT_BRIDGE` to `1`. * Starting '''emacs''' remotely (after ssh login) may hang or crash, and the user may or may not see the warning {{{ dconf-WARNING **: unable to open file '/run/user/19916/dconf-service/keyfile/user }}} As a remedy, run `dbus-launch emacs` once. Subsequent starts of emacs on the same system will then work normally.