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NEWS: add more content to both the 225 and 226 NEWS section
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Lennart Poettering
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NEWS
221
NEWS
@ -2,55 +2,106 @@ systemd System and Service Manager
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CHANGES WITH 226:
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* The DHCP implementation of systemd-networkd gained a set of new
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features:
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* The DHCP implementation of systemd-networkd gained a set of
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new features:
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- Server and client now support transmission and reception of
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timezone information. It can be configured via the newly introduced
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network options 'DHCP.UseTimezone=', 'DHCPServer.EmitTimezone=',
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and 'DHCPServer.Timezone='.
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Transmission of timezone information is enabled for containers by
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default now. Furthermore, if systemd-timesyncd is running, it will
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be updated with the received information.
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- The DHCP server now supports emitting DNS and NTP
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information. It may be enabled and configured via
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EmitDNS=, DNS=, EmitNTP=, and NTP=. If transmission of DNS
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and NTP information is enabled, but no servers are
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configured, the corresponding uplink information (if there
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is any) is propagated.
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- The DHCP server now supports emitting DNS and NTP information. It
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can be enabled and configured via 'EmitDNS=', 'DNS=', 'EmitNTP=',
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and 'NTP='.
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If transmission of DNS and NTP information is enabled, but no
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specific data-set is configured, the uplink information is used.
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- Server and client now support transmission and reception
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of timezone information. It can be configured via the
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newly introduced network options UseTimezone=,
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EmitTimezone=, and Timezone=. Transmission of timezone
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information is enabled between host and containers by
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default now: the container will change its local timezone
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to what the host has set.
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- Lease timeouts can now be configured via 'MaxLeaseTimeSec=' and
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'DefaultLeaseTimeSec='.
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- Lease timeouts can now be configured via
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MaxLeaseTimeSec= and DefaultLeaseTimeSec=.
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- The DHCP server now supports improved predictability of leases.
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Clients are more likely to get the same lease information back,
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even if the server loses state.
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- The DHCP server improved on the stability of
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leases. Clients are more likely to get the same lease
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information back, even if the server loses state.
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- The DHCP server supports two new configuration options to specify
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the lease pool, 'PoolOffset=' and 'PoolSize='.
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- The DHCP server supports two new configuration options to
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control the lease address pool metrics, PoolOffset= and
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PoolSize=.
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* The encapsulation limit of tunnels in systemd-networkd can now be
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configured via 'EncapsulationLimit='. It allows modifying the maximum
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additional levels of encapsulation that are permitted to be prepended
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to a packet.
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* The encapsulation limit of tunnels in systemd-networkd may
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now be configured via 'EncapsulationLimit='. It allows
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modifying the maximum additional levels of encapsulation
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that are permitted to be prepended to a packet.
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* systemd now supports the concept of user-buses over session-buses, if
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used with dbus-1.10 (and enabled via dbus --enable-user-session).
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* systemd now supports the concept of user buses replacing
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session buses, if used with dbus-1.10 (and enabled via dbus
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--enable-user-session). It previously only supported this on
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kdbus-enabled systems, and this release expands this to
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'dbus-daemon' systems.
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* systemd-networkd now supports predictable interface names for virtio
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devices.
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* systemd-networkd now supports predictable interface names
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for virtio devices.
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* systemd now optionally supports the unified cgroup hierarchy. If
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enabled via the kernel command-line option
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'systemd.unified_cgroup_hierarchy=1', systemd will try to mount the
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unified cgroup hierarchy directly on /sys/fs/cgroup. If not enabled,
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or not available, systemd will fall back to legacy cgroups.
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Host system and containers can mix and match legacy and unified
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hierarchies as they wish. By default, nspawn will use the same
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hierarchy as the host.
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Please note that the unified hierarchy is an experimental kernel
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feature and is likely to change in one of the next kernel releases.
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Therefore, it should not be enabled by default.
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* systemd now optionally supports the new Linux kernel
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"unified" control group hierarchy. If enabled via the kernel
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command-line option 'systemd.unified_cgroup_hierarchy=1',
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systemd will try to mount the unified cgroup hierarchy
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directly on /sys/fs/cgroup. If not enabled, or not
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available, systemd will fall back to the legacy cgroup
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hierarchy setup, as before. Host system and containers can
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mix and match legacy and unified hierarchies as they
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wish. nspawn understands the $UNIFIED_CROUP_HIERARCHY
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environment variable to individually select the hierarchy to
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use for executed containers. By default, nspawn will use the
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unified hierarchy for the containers if the host uses the
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unified hierarchy, and the legacy hierarchy otherwise.
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Please note that at this point the unified hierarchy is an
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experimental kernel feature and is likely to change in one
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of the next kernel releases. Therefore, it should not be
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enabled by default in downstream distributions yet. The
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minimum required kernel version for the unified hierarchy to
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work is 4.2. Note that when the unified hierarchy is used
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for the first time delegated access to controllers is
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safe. Because of this systemd-nspawn containers will get
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access to controllers now, as will systemd user
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sessions. This means containers and user sessions may now
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manage their own resources, partitioning up what the system
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grants them.
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* A new special scope unit "init.scope" has been introduced
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that encapsulates PID 1 of the system. It may be used to
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determine resource usage and enforce resource limits on PID
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1 itself. PID 1 hence moved out of the root of the control
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group tree.
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* The cgtop tool gained support for filtering out kernel
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threads when counting tasks in a control group. Also, the
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count of processes is now recursively summed up by
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default. Two options -k and --recursive= have been added to
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revert to old behaviour. The tool has also been updated to
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work correctly in containers now.
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* systemd-nspawn's --bind= and --bind-ro= options have been
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extended to allow creation of non-recursive bind mounts.
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* libsystemd gained two new calls sd_pid_get_cgroup() an
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sd_peer_get_cgroup() which returns the control group path of
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a process or peer of a connected AF_UNIX socket. This
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function call is particularly useful when implementing
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delegated subtrees support in the control group hierarchy.
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* The "sd-event" event loop API of libsystemd now supports
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correct dequeuing of real-time signals, without losing
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signal events.
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* When systemd requests a PolicyKit decision when managing
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units it will now add additional fields to the request,
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including unit name and desired operation. This enables more
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powerful PolicyKit policies, that make decisions depending
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on these parameters.
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Contributions from: Cristian Rodríguez, Daniel Mack, David Herrmann,
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Eugene Yakubovich, Evgeny Vereshchagin, Filipe Brandenburger, Jan
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@ -63,26 +114,74 @@ CHANGES WITH 226:
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CHANGES WITH 225:
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* machinectl gained a new verb 'shell' which opens a fresh shell on the
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target machine. It is similar to 'login', but spawns the shell
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directly. The pseudo machine '.host' now refers to the local host and
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is used by default. Hence, 'machinectl shell' can be used as
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replacement for 'su' which spawns the session as a fresh systemd
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unit.
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* machinectl gained a new verb 'shell' which opens a fresh
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shell on the target container or the host. It is similar to
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the existing 'login' command of machinectl, but spawns the
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shell directly without prompting for username or
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password. The pseudo machine '.host' now refers to the local
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host and is used by default. Hence, 'machinectl shell' can
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be used as replacement for 'su -' which spawns a session as
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a fresh systemd unit in a way that is fully isolated from
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the originating session.
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* systemd-networkd learned to cope with private-zone DHCP options and
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allows other programs to query the values.
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* systemd-networkd learned to cope with private-zone DHCP
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options and allows other programs to query the values.
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Contributions from: Alastair Hughes, Alex Crawford, Daniel Mack, David
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Herrmann, Dimitri John Ledkov, Eric Kostrowski, Evgeny Vereshchagin,
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Felipe Sateler, HATAYAMA Daisuke, Jan Pokorný, Jan Synacek, Johnny
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Robeson, Karel Zak, Kay Sievers, Kefeng Wang, Lennart Poettering, Major
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Hayden, Marcel Holtmann, Markus Elfring, Martin Mikkelsen, Martin Pitt,
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Matt Turner, Maxim Mikityanskiy, Michael Biebl, Namhyung Kim, Nicolas
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Cornu, Owen W. Taylor, Patrik Flykt, Peter Hutterer, reverendhomer,
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Richard Maw, Ronny Chevalier, Seth Jennings, Stef Walter, Susant Sahani,
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Thomas Blume, Thomas Hindoe Paaboel Andersen, Thomas Meyer, Tom
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Gundersen, Vincent Batts, WaLyong Cho, Zbigniew Jędrzejewski-Szmek
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* SELinux access control when enabling/disabling units is no
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longer enforced with this release. The previous
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implementation was incorrect, and a new corrected
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implementation is not yet available. As unit file operations
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are still protected via PolicyKit and D-Bus policy this is
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not a security problem. Yet, distributions which care about
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optimal SELinux support should probably not stabilize on
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this release.
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* sd-bus gained support for matches of type "arg0has=", that
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test for membership of strings in string arrays sent in bus
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messages.
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* systemd-resolved now dumps the contents of its DNS and LLMNR
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caches to the logs on reception of the SIGUSR1 signal. This
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is useful to debug DNS behaviour.
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* The coredumpctl tool gained a new --directory= option to
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operate on journal files in a specific directory.
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* "systemctl reboot" and related commands gained a new
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"--message=" option which may be used to set a free-text
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wall message when shutting down or rebooting the
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system. This message is also logged, which is useful for
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figuring out the reason for a reboot or shutdown a
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posteriori.
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* The "systemd-resolve-host" tool's -i switch now takes
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network interface numbers as alternative to interface names.
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* A new unit file setting for services has been introduced:
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UtmpMode= allows configuration of how precisely systemd
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handles utmp and wtmp entries for the service if this is
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enabled. This allows writing services that appear similar to
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user sessions in the output of the "w", "who", "last" and
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"lastlog" tools.
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* systemd-resolved will now locally synthesize DNS resource
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records for the "localhost" and "gateway" domains as well as
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the local hostname. This should ensure that clients querying
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RRs via resolved will get similar results as those going via
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NSS, if nss-myhostname is enabled.
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Contributions from: Alastair Hughes, Alex Crawford, Daniel
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Mack, David Herrmann, Dimitri John Ledkov, Eric Kostrowski,
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Evgeny Vereshchagin, Felipe Sateler, HATAYAMA Daisuke, Jan
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Pokorný, Jan Synacek, Johnny Robeson, Karel Zak, Kay Sievers,
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Kefeng Wang, Lennart Poettering, Major Hayden, Marcel
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Holtmann, Markus Elfring, Martin Mikkelsen, Martin Pitt, Matt
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Turner, Maxim Mikityanskiy, Michael Biebl, Namhyung Kim,
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Nicolas Cornu, Owen W. Taylor, Patrik Flykt, Peter Hutterer,
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reverendhomer, Richard Maw, Ronny Chevalier, Seth Jennings,
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Stef Walter, Susant Sahani, Thomas Blume, Thomas Hindoe
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Paaboel Andersen, Thomas Meyer, Tom Gundersen, Vincent Batts,
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WaLyong Cho, Zbigniew Jędrzejewski-Szmek
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-- Berlin, 2015-08-27
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@ -91,9 +190,9 @@ CHANGES WITH 224:
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* The systemd-efi-boot-generator functionality was merged into
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systemd-gpt-auto-generator.
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* systemd-networkd now supports Group Policy for vxlan devices. It can
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be enabled via the new boolean configuration option called
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'GroupPolicyExtension='.
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* systemd-networkd now supports Group Policy for vxlan
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devices. It can be enabled via the new boolean configuration
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option called 'GroupPolicyExtension='.
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Contributions from: Andreas Kempf, Christian Hesse, Daniel Mack, David
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Herrmann, Herman Fries, Johannes Nixdorf, Kay Sievers, Lennart
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