are harder to type, but we believe the change from 5 digit PIDs to 7
digit PIDs is not too hampering for usability.
- * MemoryLow and MemoryMin gained hierarchy-aware counterparts,
- DefaultMemoryLow and DefaultMemoryMin, which can be used to
+ * MemoryLow= and MemoryMin= gained hierarchy-aware counterparts,
+ DefaultMemoryLow= and DefaultMemoryMin=, which can be used to
hierarchically set default memory protection values for a particular
subtree of the unit hierarchy.
* Memory protection directives can now take a value of zero, allowing
explicit opting out of a default value propagated by an ancestor.
+ * A new setting DisableControllers= has been added that may be used to
+ explicitly disable one or more cgroups controllers for a unit and all
+ its children.
+
* systemd now defaults to the "unified" cgroup hierarchy setup during
build-time, i.e. -Ddefault-hierarchy=unified is now the build-time
default. Previously, -Ddefault-hierarchy=hybrid was the default. This
build/man/man systemctl
build/man/html systemd.index
- * The D-Bus "wire format" for CPUAffinity attribute is changed on
+ * libidn2 is used by default if both libidn2 and libidn are installed.
+ Please use -Dlibidn=true when libidn is favorable.
+
+ * The D-Bus "wire format" of the CPUAffinity= attribute is changed on
big-endian machines. Before, bytes were written and read in native
machine order as exposed by the native libc __cpu_mask interface.
Now, little-endian order is always used (CPUs 0–7 are described by
bits 0–7 in byte 0, CPUs 8–15 are described by byte 1, and so on).
This change fixes D-Bus calls that cross endianness boundary.
- The presentation format used for CPUAffinity by systemctl show and
- systemd-analyze dump is changed to present CPU indices instead of the
- raw __cpu_mask bitmask. For example, CPUAffinity=0-1 would be shown
- as CPUAffinity=03000000000000000000000000000… (on little-endian) or
- CPUAffinity=00000000000000300000000000000… (on 64-bit big-endian),
- and is now shown as CPUAffinity=0-1, matching the input format. The
- maximum integer that will be printed in new format is 8191 (four
- digits), while the old format always used a very long number (with
- the length varying by architecture), so they can be unambiguously
- distinguished.
+ The presentation format used for CPUAffinity= by "systemctl show" and
+ "systemd-analyze dump" is changed to present CPU indices instead of
+ the raw __cpu_mask bitmask. For example, CPUAffinity=0-1 would be
+ shown as CPUAffinity=03000000000000000000000000000… (on
+ little-endian) or CPUAffinity=00000000000000300000000000000… (on
+ 64-bit big-endian), and is now shown as CPUAffinity=0-1, matching the
+ input format. The maximum integer that will be printed in the new
+ format is 8191 (four digits), while the old format always used a very
+ long number (with the length varying by architecture), so they can be
+ unambiguously distinguished.
* /usr/sbin/halt.local is no longer supported. Implementation in
distributions was inconsistent and it seems this functionality was
* A new setting NUMAPolicy= may be used to set process memory
allocation policy. Setting can be specified in system.conf and
hence will set the default policy for PID1. Default policy can be
- overriden on per-service basis. Related setting NUMAMask= is used to
+ overridden on per-service basis. Related setting NUMAMask= is used to
specify NUMA node mask that should be associated with the selected
policy.
+
+ * PID 1 will now listen to Out-Of-Memory (OOM) events the kernel
+ generates when processes it manages are reaching their memory limits,
+ and will place their units in a special state, and optionally kill or
+ stop the whole unit.
+
+ * The service manager will now expose bus properties for the IO
+ resources used by units. This information is also shown in "systemctl
+ status" now (for services that have IOAccounting=yes set). Moreover,
+ the IO accounting data is included in the resource log message
+ generated whenever a unit stops.
+
+ * units may now configure an explicit time-out to apply to when killed
+ with SIGABRT, for example when a service watchdog is hit. Previously,
+ the regular TimeoutStopSec= time-out was applied in this case too —
+ now a separate time-out may be set using TimeoutAbortSec=.
+
+ * Services may now send a special WATCHDOG=trigger message with
+ sd_notify() to trigger an immediate "watchdog missed" event, and thus
+ request service take down. This is useful both for testing watchdog
+ handling, but also for defining error paths in services, that shall
+ be handled the same way as watchdog events.
+
+ * There are two new per-unit settings IPIngressFilterPath= and
+ IPEgressFilterPath= which allow configuration of a BPF program
+ (usually by specifying a path to a program uploaded to /sys/fs/bpf/)
+ to apply to the IP packet ingress/egress path of all processes of a
+ unit. This is useful to allow running systemd services with BPF
+ programs set up externally.
+
+ * systemctl gained a new "clean" verb for removing the state, cache,
+ runtime or logs directories of a service while it is terminated. The
+ new verb may also be used to remove the state maintained on disk for
+ timer units that have Persistent= configured.
+
+ * During the last phase of shutdown systemd will now automatically
+ increase the log level configured in the "kernel.printk" sysctl so
+ that any relevant loggable events happening during late shutdown are
+ made visible. Previously, loggable events happening so late during
+ shutdown were generally lost if the "kernel.printk" sysctl was set to
+ high thresholds, as regular logging daemons are terminated at that
+ time and thus nothing is written to disk.
+
+ * If processes terminated during the last phase of shutdown do not exit
+ quickly systemd will now show their names after a short time, to make
+ debugging easier. After a longer time-out they are forcibly killed,
+ as before.
+
+ * journalctl (and the other tools that display logs) will now highlight
+ warnings in yellow (previously, both LOG_NOTICE and LOG_WARNING where
+ shown in bright bold, now only LOG_NOTICE is). Moreover, audit logs
+ are now shown in blue color, to separate them visually from regular
+ logs. References to configuration files are now turned into clickable
+ links on terminals that support that.
+
+ * systemd-journald will now stop logging to /var/log/journal during
+ shutdown when /var/ is on a separate mount, so that it can be
+ unmounted safely during shutdown.
+
+ * systemd-resolved gained support for a new 'strict' DNS-over-TLS mode.
+
+ * The predictable naming scheme for network devices now supports
+ generating predictable names for "netdevsim" devices.
+
+ * systemd-networkd now supports MACsec, nlmon, IPVTAP and Xfrm
+ interfaces natively.
+
+ * systemd-networkd's bridge FDB support now allows configuration of a
+ destination address for each entry (Destination=), as well as the
+ VXLAN VNI (VNI=), as well as an option to declare what an entry is
+ associated with (AssociatedWith=).
+
+ * systemd-networkd's DHCPv4 support now understands a new MaxAttempts=
+ option for configuring the maximum number of attempts to request a
+ DHCP lease. It also learnt a new BlackList= option for blacklisting
+ DHCP servers (a similar setting has also been added to the IPv6 RA
+ client), as well as a SendRelease= option for configuring whether to
+ send a DHCP RELEASE message when terminating.
+
+ * systemd-networkd's DHCPv4 and DHCPv6 stacks can now be configured
+ seperately in the [DHCPv4] and [DHCPv6] sections.
+
+ * systemd-networkd's VXLAN support gained a new option
+ GenericProtocolExtension= for enabling VXLAN Generic Protocol
+ Extension support, as well as IPDoNotFragment= for setting the IP
+ "Don't fragment" bit on outgoing packets. A similar option has been
+ added to the GENEVE support.
+
+ * In systemd-networkd's [Route] section you may now configure
+ FastOpenNoCookie= for configuring per-route TCP fast-open support, as
+ well as TTLPropagate= for configuring Label Switched Path (LSP) TTL
+ propagation. The Type= setting now supports local, broadcast,
+ anycast, multicast, any, xresolve routes, too.
+
+ * systemd-networkd's [Network] section learnt a new option
+ DefaultRouteOnDevice= for automatically configuring a default route
+ onto the network device.
+
+ * systemd-networkd's bridging support gained two new options ProxyARP=
+ and ProxyARPWifi= for configuring proxy ARP behaviour as well as
+ MulticastRouter= for configureing multicast routing behaviour.
+
+ * systemd-networkd's FooOverUDP support gained the ability to configure
+ local and peer IP addresses via Local= and Peer=. A new option
+ PeerPort= may be used to configure the peer's IP port.
+
+ * systemd-networkd's TUN support gained a new setting VnetHeader= for
+ tweaking Generic Segment Offload support.
+
+ * networkctl gained a new "delete" command for removing virtual network
+ devices, as well as a new "--stats" switch for showing device
+ statistics.
+
+ * systemd-networkd's .network and .link files gained a new Property=
+ setting in the [Match] section, to match against devices with
+ specific udev properties.
+
+ * systemd-networkd's tunnel support gained a new option
+ AssignToLoopback= for selecting whether to use the loopback device
+ "lo" as underlying device.
+
+ * systemd-networkd's MACAddress= setting in the [Neighbor] section has
+ been renamed to LinkLayerAddress=, and it now allows configuration of
+ IP addresses, too.
+
+ * The CriticalConnection= setting in .network files is now deprecated,
+ and replaced by a new KeepConfiguration= setting which allows more
+ detailed configuration of the IP configuration to keep in place.
+
+ * systemd-analyze gained a new "timestamp" verb for parsing and
+ converting timestamps. It's similar to the existing "systemd-analyze
+ calendar" command which does the same for recurring calendar
+ events. It also gained a new "condition" verb for parsing and testing
+ ConditionXYZ= expressions.
+
+ * systemd-logind now exposes a per-session SetBrightness() bus call,
+ which may be used to securely change the brightness of a kernel
+ brightness device, if it belongs to the session's seat. By using this
+ call unprivileged clients can make changes to "backlight" and "leds"
+ devices securely with strict requirements on session
+ membership. Desktop environments may use this to generically make
+ brightness changes to such devices without shipping private SUID
+ binaries or specific udev rules for that purpose.
+
+ * "udevadm info" gained a --wait-for-initialization switch to wait for
+ a device to be initialized.
+
+ * systemd-hibernate-resume-generator will now look for resumeflags= on
+ the kernel command line, which is similar to rootflags= and may be
+ used to configure device timeouts for waiting for the hibernation
+ device to show up.
+
+ * sd-event learnt a new API call sd_event_source_disable_unref() for
+ disabling and unref'ing an event source in a single function. A
+ related call sd_event_source_disable_unrefp() has been added for use
+ with GCC's cleanup extension.
+
+ * The sd-id128.h public API gained a new definition
+ SD_ID128_UUID_FORMAT_STR for formatting a 128bit ID in UUID format
+ with printf().
+
+ * "busctl introspect" gained a new switch --xml-interface for dumping
+ XML introspection data unmodified.
+
+ * PID 1 may now show the unit name instead of the unit description
+ string in its status output during boot. This may be configured in
+ the StatusUnitFormat= setting in /etc/systemd/system.conf or the
+ kernel command line option systemd.status_unit_format=.
+
+ * The systemd.debug_shell kernel command line option now optionally
+ takes a tty name to spawn the debug shell on, which allows selecting
+ a different tty than the built-in default.
+
…
CHANGES WITH 242:
up a private /dev/ file system containing devices nodes — but when
these are opened they don't work.
- At this point is is recommended that container managers utilizing
+ At this point it is recommended that container managers utilizing
user namespaces that intend to run systemd in the payload explicitly
block mknod() with seccomp or similar, so that the graceful fallback
logic works again.
projects / thirdparty / systemd.git / blobdiff