systemd 198 Improves Configuration of Unit Files

The developers have implemented a lot of new features, updates and fixes

By on March 8th, 2013 14:25 GMT

systemd, a system and service manager for Linux, compatible with SysV and LSB init scripts, that provides aggressive parallelization capabilities and uses socket and D-Bus activation for starting services, is now at version 198.

systemd 198 is mainly just a maintenance release, but it also comes with some new features that users might be interested in.

As stated in the previous version, systemd 198 will be implemented in Fedora 19, once it properly gets on the development track.

Highlights of systemd 198:

• Configuration of unit files may now be extended via drop-in files without having to edit/override the unit files themselves. If the administrator wants to change one value for a service file foobar.service he can now do so by dropping in a configuration snippet into /etc/systemd/systemd/foobar.service.d/*.conf.;
• Most unit file settings which take lists of items can now be reset by assigning the empty string to them;
• systemctl gained a new "list-dependencies" command for listing the dependencies of a unit recursively;
• Inhibitors are now honored and listed by "systemctl suspend," "systemctl poweroff" (and similar) too, not only GNOME;
• Resource limits (as exposed by the various control group controllers) can now be controlled dynamically at runtime for all units;
• systemd-vconsole-setup will now copy all font settings to all allocated VTs, where it previously applied them only to the foreground VT;
• This release drops support for a few legacy or distribution-specific LSB facility names when parsing init scripts: $x-display-manager, $mail-transfer-agent, $mail-transport-agent, $mail-transfer-agent, $smtp, and $null;
• There are new bus calls on PID1's Manager object for cancelling jobs, and removing snapshot units. Previously, both calls were only available on the Job and Snapshot objects themselves;
• systemd-journal-gatewayd gained SSL support.

A detailed changelog of the new release is available in the mailing list.

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