systemd System and Service Manager
+CHANGES WITH 218:
+
+ * If compiled with --enable-xkbcommon, systemd-localed will
+ verify x11 keymap settings by compiling the given keymap. It
+ will spew out warnings if the compilation fails. This
+ requires libxkbcommon to be installed.
+
+ * All systemd programs that read standalone configuration files
+ in /etc now also support a corresponding series of
+ .conf.d configuration directories in /etc/, /run/,
+ /usr/local/lib/, /usr/lib/, and (if configured with
+ --enable-split-usr) /lib/. In particular, the following
+ configuration files now have corresponding configuration
+ directories: system.conf user.conf, logind.conf,
+ journald.conf, sleep.conf, bootchart.conf, coredump.conf,
+ resolved.conf, timesyncd.conf, journal-remote.conf, and
+ journal-upload.conf. Note that distributions should use the
+ configuration directories in /usr/lib/; the directories in
+ /etc/ are reserved for the system administrator.
+
CHANGES WITH 217:
- * journalctl gained option -t/--identifier to match on the
- syslog identifier and --utc option to show timestamps in UTC
- timezone. journalctl now also accepts -n/--lines=all to
- disable line cap under a pager.
+ * journalctl gained the new options -t/--identifier= to match
+ on the syslog identifier (aka "tag"), as well as --utc to
+ show log timestamps in the UTC timezone. journalctl now also
+ accepts -n/--lines=all to disable line capping in a pager.
+
+ * journalctl gained a new switch, --flush, that synchronously
+ flushes logs from /run/log/journal to /var/log/journal if
+ persistent storage is enabled. systemd-journal-flush.service
+ now waits until the operation is complete.
* Services can notify the manager before they start a reload
(by sending RELOADING=1) or shutdown (by sending
- STOPPING=1). This allows the manager to show the
- internal state of daemons and closes a race condition
- when the process is still running but has closed its
- d-bus connection.
+ STOPPING=1). This allows the manager to track and show the
+ internal state of daemons and closes a race condition when
+ the process is still running but has closed its D-Bus
+ connection.
- * Services with Type=oneshot do not have to have any
- ExecStart commands.
+ * Services with Type=oneshot do not have to have any ExecStart
+ commands anymore.
* User units are now loaded also from
$XDG_RUNTIME_DIR/systemd/user/. This is similar to the
/run/systemd/user directory that was already previously
supported, but is under the control of the user.
- * A timeout for the start of the system can be configured. The
- system can be configured to reboot or poweroff if the basic
- system default target is not reached before the timeout (new
- StartTimeoutSec=, StartTimeoutAction=,
- StartTimeoutRebootArgument= options).
+ * Job timeouts (i.e. time-outs on the time a job that is
+ queued stays in the run queue) can now optionally result in
+ immediate reboot or power-off actions (JobTimeoutAction= and
+ JobTimeoutRebootArgument=). This is useful on ".target"
+ units, to limit the maximum time a target remains
+ undispatched in the run queue, and to trigger an emergency
+ operation in such a case. This is now used by default to
+ turn off the system if boot-up (as defined by everything in
+ basic.target) hangs and does not complete for at least
+ 15min. Also, if power-off or reboot hang for at least 30min
+ an immediate power-off/reboot operation is triggered. This
+ functionality is particularly useful to increase reliability
+ on embedded devices, but also on laptops which might
+ accidentally get powered on when carried in a backpack and
+ whose boot stays stuck in a hard disk encryption passphrase
+ question.
* systemd-logind can be configured to also handle lid switch
events even when the machine is docked or multiple displays
* A helper binary and a service have been added which can be
used to resume from hibernation in the initramfs. A
generator will parse the resume= option on the kernel
- command-line to trigger resume.
-
- * systemd-evcat input debugging tool has been added. It will
- print keys read for the input system and show modifier
- status.
+ command line to trigger resume.
- * systemd-modeset graphics debugging tool will show undulating
- rainbows on all connected displays.
-
- * A user console daemon systemd-consoled has been added. It is
- a preview, and will so far open a single terminal on each
- session of the user marked as Desktop=SYSTEMD-CONSOLE.
+ * A user console daemon systemd-consoled has been
+ added. Currently, it is a preview, and will so far open a
+ single terminal on each session of the user marked as
+ Desktop=systemd-console.
* Route metrics can be specified for DHCP routes added by
systemd-networkd.
- * SELinux context of socket-actived services can be set from
- the information provided by the remote peer
+ * The SELinux context of socket-activated services can be set
+ from the information provided by the networking stack
(SELinuxContextFromNet= option).
* Userspace firmware loading support has been removed and
minutes, but a warning will be printed after 1 minute to
help diagnose kernel modules that take a long time to load.
- * Udev rules can now remove tags with TAG-="foobar".
+ * Udev rules can now remove tags on devices with TAG-="foobar".
- * Readhead implementation has been removed. In many
- circumstatances it didn't give expected benefits even for
+ * systemd's readahead implementation has been removed. In many
+ circumstances it didn't give expected benefits even for
rotational disk drives and was becoming less relevant in the
- age of SSDs.
+ age of SSDs. As none of the developers has been using
+ rotating media anymore, and nobody stepped up to actively
+ maintain this component of systemd it has now been removed.
- * Swap units can use Discard= to specify discard options.
+ * Swap units can use Options= to specify discard options.
Discard options specified for swaps in /etc/fstab are now
respected.
virtualization.
* The Password Agent protocol gained support for queries where
- the user input is shown, useful e.g. for usernames.
- systemd-ask-password gained a new --echo option to turn
- that on.
+ the user input is shown, useful e.g. for user names.
+ systemd-ask-password gained a new --echo option to turn that
+ on.
+
+ * The default sysctl.d/ snippets will now set:
+
+ net.core.default_qdisc = fq_codel
+
+ This selects Fair Queuing Controlled Delay as the default
+ queuing discipline for network interfaces. fq_codel helps
+ fight the network bufferbloat problem. It is believed to be
+ a good default with no tuning required for most workloads.
+ Downstream distributions may override this choice. On 10Gbit
+ servers that do not do forwarding, "fq" may perform better.
+ Systems without a good clocksource should use "pfifo_fast".
+
+ * If kdbus is enabled during build a new option BusPolicy= is
+ available for service units, that allows locking all service
+ processes into a stricter bus policy, in order to limit
+ access to various bus services, or even hide most of them
+ from the service's view entirely.
+
+ * networkctl will now show the .network and .link file
+ networkd has applied to a specific interface.
+
+ * sd-login gained a new API call sd_session_get_desktop() to
+ query which desktop environment has been selected for a
+ session.
+
+ * UNIX utmp support is now compile-time optional to support
+ legacy-free systems.
+
+ * systemctl gained two new commands "add-wants" and
+ "add-requires" for pulling in units from specific targets
+ easily.
+
+ * If the word "rescue" is specified on the kernel command line
+ the system will now boot into rescue mode (aka
+ rescue.target), which was previously available only by
+ specifying "1" or "systemd.unit=rescue.target" on the kernel
+ command line. This new kernel command line option nicely
+ mirrors the already existing "emergency" kernel command line
+ option.
+
+ * New kernel command line options mount.usr=, mount.usrflags=,
+ mount.usrfstype= have been added that match root=, rootflags=,
+ rootfstype= but allow mounting a specific file system to
+ /usr.
+
+ * The $NOTIFY_SOCKET is now also passed to control processes of
+ services, not only the main process.
+
+ * This version reenables support for fsck's -l switch. This
+ means at least version v2.25 of util-linux is required for
+ operation, otherwise dead-locks on device nodes may
+ occur. Again: you need to update util-linux to at least
+ v2.25 when updating systemd to v217.
+
+ * The "multi-seat-x" tool has been removed from systemd, as
+ its functionality has been integrated into X servers 1.16,
+ and the tool is hence redundant. It is recommended to update
+ display managers invoking this tool to simply invoke X
+ directly from now on, again.
+
+ * Support for the new ALLOW_INTERACTIVE_AUTHORIZATION D-Bus
+ message flag has been added for all of systemd's PolicyKit
+ authenticated method calls has been added. In particular
+ this now allows optional interactive authorization via
+ PolicyKit for many of PID1's privileged operations such as
+ unit file enabling and disabling.
+
+ * "udevadm hwdb --update" learnt a new switch "--usr" for
+ placing the rebuilt hardware database in /usr instead of
+ /etc. When used only hardware database entries stored in
+ /usr will be used, and any user database entries in /etc are
+ ignored. This functionality is useful for vendors to ship a
+ pre-built database on systems where local configuration is
+ unnecessary or unlikely.
+
+ * Calendar time specifications in .timer units now also
+ understand the strings "semi-annually", "quarterly" and
+ "minutely" as shortcuts (in addition to the preexisting
+ "anually", "hourly", ...).
+
+ * systemd-tmpfiles will now correctly create files in /dev
+ at boot which are marked for creation only at boot. It is
+ recommended to always create static device nodes with 'c!'
+ and 'b!', so that they are created only at boot and not
+ overwritten at runtime.
+
+ * When the watchdog logic is used for a service (WatchdogSec=)
+ and the watchdog timeout is hit the service will now be
+ terminated with SIGABRT (instead of just SIGTERM), in order
+ to make sure a proper coredump and backtrace is
+ generated. This ensures that hanging services will result in
+ similar coredump/backtrace behaviour as services that hit a
+ segmentation fault.
+
+ Contributions from: Andreas Henriksson, Andrei Borzenkov,
+ Angus Gibson, Ansgar Burchardt, Ben Wolsieffer, Brandon L.
+ Black, Christian Hesse, Cristian Rodríguez, Daniel Buch,
+ Daniele Medri, Daniel Mack, Dan Williams, Dave Reisner, David
+ Herrmann, David Sommerseth, David Strauss, Emil Renner
+ Berthing, Eric Cook, Evangelos Foutras, Filipe Brandenburger,
+ Gustavo Sverzut Barbieri, Hans de Goede, Harald Hoyer, Hristo
+ Venev, Hugo Grostabussiat, Ivan Shapovalov, Jan Janssen, Jan
+ Synacek, Jonathan Liu, Juho Son, Karel Zak, Kay Sievers, Klaus
+ Purer, Koen Kooi, Lennart Poettering, Lukas Nykryn, Lukasz
+ Skalski, Łukasz Stelmach, Mantas Mikulėnas, Marcel Holtmann,
+ Marius Tessmann, Marko Myllynen, Martin Pitt, Michael Biebl,
+ Michael Marineau, Michael Olbrich, Michael Scherer, Michal
+ Schmidt, Michal Sekletar, Miroslav Lichvar, Patrik Flykt,
+ Philippe De Swert, Piotr Drąg, Rahul Sundaram, Richard
+ Weinberger, Robert Milasan, Ronny Chevalier, Ruben Kerkhof,
+ Santiago Vila, Sergey Ptashnick, Simon McVittie, Sjoerd
+ Simons, Stefan Brüns, Steven Allen, Steven Noonan, Susant
+ Sahani, Sylvain Plantefève, Thomas Hindoe Paaboel Andersen,
+ Timofey Titovets, Tobias Hunger, Tom Gundersen, Torstein
+ Husebø, Umut Tezduyar Lindskog, WaLyong Cho, Zbigniew
+ Jędrzejewski-Szmek.
+
+ -- Berlin, 2014-10-28
CHANGES WITH 216:
one of the next releases, at the same time that we will
declare the APIs stable.
- * When the kernel command-line argument "kdbus" is specified,
+ * When the kernel command line argument "kdbus" is specified,
systemd will automatically load the kdbus.ko kernel module. At
this stage of development, it is only useful for testing kdbus
and should not be used in production. Note: if "--enable-kdbus"
certain paths from operation.
* journald will now automatically flush all messages to disk
- as soon as a message of the log priorities CRIT, ALERT or
- EMERG is received.
+ as soon as a message at the log level CRIT, ALERT or EMERG
+ is received.
Contributions from: Andrew Cook, Brandon Philips, Christian
Hesse, Christoph Junghans, Colin Walters, Daniel Schaal,
~ianmdlvl / elogind.git / blobdiff