NEWS: initialy version of NEWS
Needs lots of updates still, but let's get the party started.
This commit is contained in:
Lennart Poettering
parent
4b987478b0
commit
6b1ab752c2
332
NEWS
332
NEWS
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@ -20,7 +20,7 @@ CHANGES WITH 240 in spe:
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systemd-run tool to default to Type=exec for transient services
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started by it. This should be mostly safe, but in specific corner
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cases might result in problems, as the systemd-run tool will then
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block on NSS calls (such as user name lookups due to User=) done
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block on NSS calls (such as user name look-ups due to User=) done
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between the fork() and execve(), which under specific circumstances
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might cause problems. It is recommended to specify "-p Type=simple"
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explicitly in the few cases where this applies. For regular,
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@ -88,16 +88,342 @@ CHANGES WITH 240 in spe:
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that have multiple links with routes to the same networks (e.g.
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a client with a Wi-Fi and Ethernet both connected to the internet).
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Consult the kernel documetnation for details on this sysctl:
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Consult the kernel documentation for details on this sysctl:
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https://www.kernel.org/doc/Documentation/networking/ip-sysctl.txt
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* CPUAccounting=yes no longer enables the CPU controller when using
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kernel 4.15+ and the unified cgroup hierarchy, as required accounting
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statistics are now provided independently from the CPU controller.
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* Support for disabling a particular cgroup controller within a subtree
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* Support for disabling a particular cgroup controller within a sub-tree
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has been added through the DisableControllers= directive.
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* The new "MemoryMin=" unit file property may now be used to set the
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memory usage protection limit of processes invoked by the unit. This
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controls the cgroupsv2 memory.min attribute. Similar, the new
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"IODeviceLatencyTargetSec=" property has been added, wrapping the new
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cgroupsv2 io.latency cgroup property for configuring per-service I/O
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latency.
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* systemd now supports the cgroupsv2 devices BPF logic, as counterpart
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to the cgroupsv1 "devices" cgroup controller.
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* systemd-escape now is able to combine --unescape with --template. It
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also learnt a new option --instance for extracting and unescaping the
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instance part of a unit name.
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* sd-bus now provides the sd_bus_message_readv() which is similar to
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sd_bus_message_read() but takes a va_list object. The pair
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sd_bus_set_method_call_timeout() and sd_bus_get_method_call_timeout()
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have been added for configuring the default method call timeout to
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use. sd_bus_error_move() may be used to efficiently move the contents
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from one sd_bus_error structure to another, invalidating the
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source. sd_bus_set_close_on_exit() and sd_bus_get_close_on_exit() may
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be used to control whether a bus connection object is automatically
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flushed when an sd-event loop is exited.
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* When processing classic BSD syslog log messages, journald will now
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save the original time-stamp string supplied in the new
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SYSLOG_TIMESTAMP= journal field. This permits consumers to
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reconstruct the original BSD syslog message more correctly.
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* StandardOutput=/StandardError= in service files gained support for
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new "append:…" parameters, for connecting STDOUT/STDERR of a service
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to a file, and appending to it.
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* The signal to use as last step of killing of unit processes is now
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configurable. Previously it was hard-coded to SIGKILL, which may now
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be overridden with the new KillSignal= setting. Note that this is the
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signal used when regular termination (i.e. SIGTERM) does
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suffice. Similar, the signal used when aborting a program in case of
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a watchdog timeout may now be configured too (WatchdogSignal=).
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* The XDG_SESSION_DESKTOP environment variable may now be configured in
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the pam_systemd argument line, using the new desktop= switch. This is
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useful to initialize it properly from a display manager without
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having to touch C code.
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* Most configuration options that previously accepted percentage
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values now also understand permille values, if the '‰' suffix is
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used (instead of '%').
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* systemd-logind will offer hibernation only if the currently used
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kernel image is still available on disk.
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* systemd-resolved may now optionally use OpenSSL instead of GnuTLS for
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DNS-over-TLS.
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* systemd-resolved's configuration file resolved.conf gained a new
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option ReadEtcHosts= which may be used to turn off processing and
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honoring /etc/hosts entries.
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* The "--wait" switch may now be passed to "systemctl
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is-system-running", in which case the tool will synchronously wait
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until the system finished start-up.
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* hostnamed gained a new bus call to determine the DMI product UUID.
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* On x86-64 systemd will now prefer using the RDRAND processor
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instruction over /dev/urandom whenever it requires randomness that
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neither has to be crypto-grade nor should be reproducible. This
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should substantially reduce the amount of entropy systemd requests
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from the kernel during initialization on such systems, though not
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reduce it to zero. (Why not zero? systemd still needs to allocate
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UUIDs and such uniquely, which require high-quality randomness.)
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* networkd gained support for Foo-Over-UDP, ERSPAN and ISATAP
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tunnels. It also gained a new option ForceDHCPv6PDOtherInformation=
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for forcing the "Other Information" bit in IPv6 RA messages. The
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bonding logic gained three new options AdActorSystemPriority=,
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AdUserPortKey=, AdActorSystem= for configuring various 802.3ad
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aspects. The tunnel logic gained a new IPv6RapidDeploymentPrefix=
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option for configuring IPv6 Rapid Deployment. The policy rule logic
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gained four new options IPProtocol=, SourcePort= and
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DestinationPort=, InvertRule=. The bridge logic gained support for
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the MulticastToUnicast= option. networkd also gained support for
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configuring static IPv4 ARP or IPv6 neighbor entries.
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* .preset files (as read by 'systemctl preset') may now be used to
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instantiate services.
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* /etc/crypttab now understands the sector-size= option to configure
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the sector size for an encrypted partition.
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* Key material for encrypted disks may now be placed on a formatted
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medium, and reference from /etc/crypttab by the UUID of the file
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system, followed by "=" suffixed by the paths to the key file.
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* The "collect" udev component has been removed without replacement, as
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it is not used nor maintained.
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* When the RuntimeDirectory=, StateDirectory=, CacheDirectory=,
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LogsDirectory=, ConfigurationDirectory= settings are used in a
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service the executed processes will now receive a set of environment
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variables pointing it to the full, absolute paths of these
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directories. Specifically, RUNTIME_DIRECTORY=, STATE_DIRECTORY,
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CACHE_DIRECTORY, LOGS_DIRECTORY, CONFIGURATION_DIRECTORY are now set
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if these options are used. Note that these options may be used
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multiple times per service in which case the resulting paths will be
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concatenated and separated by colons.
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* Predictable interface naming has been extended to cover InfiniBand
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NICs. They will be exposed with an "ib" prefix.
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* tmpfiles.d/ line types may now be suffixed with a '-' character, in
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which case the respective line failing is ignored.
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* .link files may now be used to configure the equivalent to the
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"ethtool advertise" commands.
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* The sd-device.h and sd-hwdb.h APIs are now exported, as an
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alternative to libudev.h. Previously, the latter was just an internal
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wrapper around the former, but now these two APIs are exposed
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directly.
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* sd-id128.h gained a new function sd_id128_get_boot_app_specific()
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which calculates an app-specific boot ID similar to how
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sd_id128_get_machine_app_specific() generates an app-specific machine
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ID.
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* A new tool systemd-id128 has been added that can be used to determine
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and generate various 128bit IDs.
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* /etc/os-release gained two new standardized fields DOCUMENTATION_URL=
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and LOGO=.
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* systemd-hibernate-resume-generator will now honor the "noresume"
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kernel command line option, in which case it will bypass resuming
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from any hibernated image.
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* The systemd-sleep.conf configuration file gained new options
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AllowSuspend=, AllowHibernation=, AllowSuspendThenHibernate=,
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AllowHybridSleep= for prohibiting specific sleep modes even if the
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system supports it.
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* portablectl is now officially supported and has thus moved to
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/usr/bin/.
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* bootctl learnt the two new commands "set-default" and "set-oneshot"
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for setting the default boot loader item to boot to (either
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persistently or only for the next boot). This is currently only
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compatible with sd-boot, but may be implemented on other boot loaders
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too, that follow the boot loader interface. The updated interface is
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now documented here:
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https://systemd.io/BOOT_LOADER_INTERFACE
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* A new kernel command line option systemd.early_core_pattern= is now
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understood which may be used to influence the core_pattern PID 1
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installs during early boot.
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* busctl learnt two new options -j and --json= for outputting method
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call replies, properties and monitoring output in JSON.
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* journalctl's JSON output now supports simple ANSI coloring as well as
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a new "json-seq" mode for generating RFC7464 output.
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* Unit files now support the %g/%G specifiers that resolve to the UNIX
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group/GID of the service manager runs as, similar to the existing
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%u/%U specifiers that resolve to the UNIX user/UID.
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* systemd-logind learnt a new global configuration option
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UserStopDelaySec= that may be set in logind.conf. It specifies how
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long the systemd --user instance shall remain started after a user
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logs out. This is useful to speed up repetitive re-connections of the
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same user, as it means the user's service manager doesn't have to be
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stopped/restarted on each iteration, but can be reused between
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subsequent options. This setting defaults to 10s. systemd-logind also
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exports two new properties on its Manager D-Bus objects indicating
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whether the system's lid is currently closed, and on AC power.
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* systemd gained support for a generic boot counting logic, which
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generically permits automatic reverting to older boot loader entries
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if newer updated ones don't work. The boot loader side is implemented
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in sd-boot, but is kept open for other boot loaders too. For details
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see:
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https://systemd.io/AUTOMATIC_BOOT_ASSESSMENT
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* The SuccessAction=/FailureAction= unit file settings now learnt two
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new parameters: "exit" and "exit-force", which result in immediate
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exiting of the service manager, and are only useful in systemd --user
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and container environments.
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* Unit files gained support for a pair of options
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FailureActionExitStatus=/SuccessActionExitStatus= for configuring the
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exit status to use as service manager exit status when
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SuccessAction=/FailureAction= is set to exit or exit-force.
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* A pair of LogRateLimitIntervalSec=/LogRateLimitBurst= per-service
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options may now be used to configure the log rate limiting applied by
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journald per-service.
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* systemd-analyze gained a new verb "timespan" for parsing and
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normalizing time span values (i.e. strings like "5min 7s 8us").
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* systemd-analyze also gained a new verb "security" for analyzing the
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security and sand-boxing settings of services in order to determine an
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"exposure level" for them, indicating whether a service would benefit
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from more sand-boxing options turned on for them.
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* "systemd-analyze syscall-filter" will now also show system calls
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supported by the local kernel but not included in any of the defined
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groups.
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* .nspawn files now understand the Ephemeral= setting, matching the
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--ephemeral command line switch.
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* sd-event gained the new APIs sd_event_source_get_floating() and
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sd_event_source_set_floating() for controlling whether a specific
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event source is "floating", i.e. destroyed along with the even loop
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object itself.
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* Unit objects on D-Bus gained a new "Refs" property that lists all
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clients that currently have a reference on the unit, thus ensuring it
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is not unloaded.
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* The JoinControllers= option in system.conf is no longer supported, as
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it didn't work correctly, is hard to support properly, is legacy (as
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the concept only exists on cgroupsv1) and not used.
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* Journal messages that are generated whenever a unit enters the failed
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state are now recognizable with a unique MESSAGE_ID. Similar,
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messages generated whenever a service process exits are now made
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recognizable, too. A new recognizable is also added now whenever a
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unit enters the "dead" state, on success.
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* systemd-run gained a new switch --working-directory= for configuring
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the working directory of the service to start. A shortcut -d is
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equivalent, setting the working directory of the service to the
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current working directory of the invoking program. The new --shell
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(or just -S) option has been added for invoking the $SHELL of the
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caller as a service, and implies --pty --same-dir --wait --collect
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--service-type=exec. Or in other words, "systemd-run -S" is not the
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quickest way to quickly get an interactive in a fully clean and
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well-defined system service context.
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* machinectl gained a new verb "import-fs" for importing an OS tree
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from a directory. Moreover, when a directory or tarball is imported
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and single top-level directory found with the OS itself below the OS
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tree is automatically mangled and moved one level up.
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* systemd-importd will no longer set up an implicit btrfs loop-back file
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system on /var/lib/machines but use it if it is already set up.
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* A new generator "systemd-run-generator" has been added. It will
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synthesize a unit from one or more program command lines included in
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the kernel command line. This is very useful in container managers
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for example:
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# systemd-nspawn -i someimage.raw -b systemd.run='"some command line"'
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This will run "systemd-nspawn" on an image, invoke the specified
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command line and immediately shut down the container again,
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propagating the command line's exit code.
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* The block device locking logic has been documented now:
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https://systemd.io/BLOCK_DEVICE_LOCKING
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* loginctl and machinectl now optionally output the various tables in
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JSON using the --output= switch. It is our intention to add similar
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support to systemctl and all other commands.
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* udevadm's query and trigger verb now optionally take a .device unit
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name as argument.
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* systemd-udevd's network naming logic now understands a new
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net.naming-scheme= kernel command line switch, which may be use to
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pick a specific version of the naming scheme. This helps stabilizing
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interface names even as systemd/udev are updated and the naming logic
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is improved.
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Contributions from: afg, Alan Jenkins, Aleksei Timofeyev, Alexander
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Filippov, Alexander Kurtz, Alexey Bogdanenko, Andreas Henriksson,
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Andrew Jorgensen, Anita Zhang, apnix-uk, Arkan49, Arseny Maslennikov,
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asavah, Asbjørn Apeland, aszlig, Bastien Nocera, Ben Boeckel, Benedikt
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Morbach, Benjamin Berg, Carlo Caione, Cedric Viou, Chen Qi, ChenQi1989,
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Chris Chiu, Chris Down, Chris Morin, Christian Rebischke, Claudius
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Ellsel, ColinGuthrie, dana, Daniel, Daniele Medri, Daniel Kahn Gillmor,
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Daniel Rusek, Daniel van Vugt, Dariusz Gadomski, Dave Reisner, David
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Anderson, Davide Cavalca, David Leeds, David Malcolm, David Strauss,
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David Tardon, Dimitri John Ledkov, dj-kaktus, Dongsu Park, Elias
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Probst, Emil Soleyman, Erik Kooistra, Ervin Peters, Evgeni Golov,
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Evgeny Vereshchagin, Fabrice Fontaine, Faheel Ahmad, faizalluthfi,
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Felix Yan, Filipe Brandenburger, Franck Bui, Frank Schaefer, Frantisek
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Sumsal, Gianluca Boiano, Giuseppe Scrivano, glitsj16, Hans de Goede,
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Harald Hoyer, Harry Mallon, Harshit Jain, hellcp, Helmut Grohne, Henry
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Tung, Hui Yiqun, imayoda, Insun Pyo, INSUN PYO, Iwan Timmer,
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jambonmcyeah, Jan Janssen, Jan Pokorný, Jan Synacek, Jason
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A. Donenfeld, javitoom, Jérémy Nouhaud, Jiuyang liu, João Paulo Rechi
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Vita, Joe Hershberger, Joe Rayhawk, Joerg Behrmann, Joerg Steffens,
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Jonas DOREL, Jon Ringle, Josh Soref, Julian Andres Klode, Jürg
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Billeter, Keith Busch, killermoehre, Kirill Marinushkin, Lennart
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Poettering, LennartPoettering, Liberasys, Lion Yang, Li Song, Lorenz
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Hübschle-Schneider, Lubomir Rintel, Lucas Werkmeister, Ludwin Janvier,
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Lukáš Nykrýn, Luke Shumaker, mal, Marc-Antoine Perennou, Marcin
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Skarbek, Marco Trevisan (Treviño), Marian Cepok, Mario Hros, Marko
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Myllynen, Markus Grimm, Martin Pitt, Martin Sobotka, Martin Wilck,
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Mathieu Trudel-Lapierre, Matthew Leeds, Michael Biebl, Michael Olbrich,
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Michael 'pbone' Pobega, Michal Koutný, Michal Sekletar, Michal Soltys,
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Mike Gilbert, Mike Palmer, Muhammet Kara, Neal Gompa, Network Silence,
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nikolas, NOGISAKA Sadata, Oliver Smith, Patrik Flykt, Pavel Hrdina,
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Paweł Szewczyk, Peter Hutterer, Piotr Drąg, Ray Strode, remueller,
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Renaud Métrich, Roman Gushchin, Ronny Chevalier, Rubén Suárez Alvarez,
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Ruixin Bao, RussianNeuroMancer, Ryutaroh Matsumoto, Saleem Rashid,
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Samuel Morris, Sandy, scootergrisen, seb128, Sergey Ptashnick, Shawn
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Landden, Shengyao Xue, Shih-Yuan Lee (FourDollars), Sjoerd Simons,
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Stephen Gallagher, Steven Allen, Steve Ramage, Susant Sahani, Sven
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Joachim, Sylvain Plantefève, TanuKaskinen, Tejun Heo, Thiago Macieira,
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Thomas Blume, Thomas Haller, Thomas H. P. Andersen, Tim Ruffing, TJ,
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Tobias Jungel, Todd Walton, Tommi Rantala, Tomsod M, Tony Novak,
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Trevonn, Victor Laskurain, Victor Tapia, Violet Halo, Vojtech Trefny,
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welaq, William A. Kennington III, William Douglas, Wyatt Ward, Xiang
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Fan, Xi Ruoyao, Xuanwo, Yann E. MORIN, YmrDtnJu, Yu Watanabe, Zbigniew
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Jędrzejewski-Szmek, Zhang Xianwei, Zsolt Dollenstein
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— Somewhere, 2018-xx-yy
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CHANGES WITH 239:
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* NETWORK INTERFACE DEVICE NAMING CHANGES: systemd-udevd's "net_id"
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