X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=man%2Fsystemd.xml;h=4abd8902a431d4a579316dfdaa27b8741796911b;hp=55ba0875f0e73422536002b1185b3f32c01fd2c7;hb=deb480d1a7c3f3178c44f0aa73765181c0e2317f;hpb=08177c85efd52c2c2ab00991791649ad8cf61297 diff --git a/man/systemd.xml b/man/systemd.xml index 55ba0875f..4abd8902a 100644 --- a/man/systemd.xml +++ b/man/systemd.xml @@ -78,7 +78,7 @@ the configuration file system.conf, otherwise user.conf. See - systemd.conf5 + systemd-system.conf5 for more information. @@ -118,25 +118,11 @@ configuration items understood in unit definition files. - - - - Extract D-Bus - interface introspection data. This is - mostly useful at install time - to generate data suitable for the - D-Bus interfaces - repository. Optionally the interface - name for the introspection data may be - specified. If omitted, the - introspection data for all interfaces - is dumped. - Set default unit to - activate on startup. If not specified + activate on startup. If not specified, defaults to default.target. @@ -233,7 +219,7 @@ Highlight important log messages. Argument is a boolean - value. If the argument is omitted it + value. If the argument is omitted, it defaults to . @@ -285,25 +271,27 @@ Concepts systemd provides a dependency system between - various entities called "units". Units encapsulate - various objects that are relevant for system boot-up - and maintenance. The majority of units are configured - in unit configuration files, whose syntax and basic - set of options is described in + various entities called "units" of 12 different + types. Units encapsulate various objects that are + relevant for system boot-up and maintenance. The + majority of units are configured in unit configuration + files, whose syntax and basic set of options is + described in systemd.unit5, however some are created automatically from other - configuration or dynamically from system state. Units - may be 'active' (meaning started, bound, plugged in, - ... depending on the unit type, see below), or - 'inactive' (meaning stopped, unbound, unplugged, ...), - as well as in the process of being activated or - deactivated, i.e. between the two states (these states - are called 'activating', 'deactivating'). A special - 'failed' state is available as well which is very - similar to 'inactive' and is entered when the service - failed in some way (process returned error code on - exit, or crashed, or an operation timed out). If this - state is entered the cause will be logged, for later + configuration, dynamically from system state or + programmatically at runtime. Units may be "active" + (meaning started, bound, plugged in, ..., depending on + the unit type, see below), or "inactive" (meaning + stopped, unbound, unplugged, ...), as well as in the + process of being activated or deactivated, + i.e. between the two states (these states are called + "activating", "deactivating"). A special "failed" + state is available as well, which is very similar to + "inactive" and is entered when the service failed in + some way (process returned error code on exit, or + crashed, or an operation timed out). If this state is + entered, the cause will be logged, for later reference. Note that the various unit types may have a number of additional substates, which are mapped to the five generalized unit states described @@ -312,7 +300,7 @@ The following unit types are available: - Service units, which control + Service units, which start and control daemons and the processes they consist of. For details see systemd.service5. @@ -369,6 +357,18 @@ objects change or are modified. See systemd.path5. + Slice units may be used to + group units which manage system processes + (such as service and scope units) in a + hierarchical tree for resource management + purposes. See + systemd.slice5. + + Scope units are similar to + service units, but manage foreign processes + instead of starting them as well. See + systemd.scope5. + Units are named as their configuration @@ -393,7 +393,7 @@ and ordering dependencies are placed between two units. Also note that the majority of dependencies are implicitly created and maintained by systemd. In most - cases it should be unnecessary to declare additional + cases, it should be unnecessary to declare additional dependencies manually, however it is possible to do this. @@ -415,7 +415,7 @@ multi-user.target (for limited console-only boots for use in embedded or server environments, or similar; a subset of - graphical.target). However it is at the discretion of + graphical.target). However, it is at the discretion of the administrator to configure it as an alias to any other target unit. See systemd.special7 @@ -425,7 +425,7 @@ individual Linux control groups named after the unit which they belong to in the private systemd hierarchy. (see cgroups.txt + url="https://www.kernel.org/doc/Documentation/cgroups/cgroups.txt">cgroups.txt for more information about control groups, or short "cgroups"). systemd uses this to effectively keep track of processes. Control group information is @@ -473,14 +473,14 @@ Systemd contains native implementations of various tasks that need to be executed as part of the - boot process. For example, it sets the host name or + boot process. For example, it sets the hostname or configures the loopback network device. It also sets up and mounts various API file systems, such as /sys or /proc. For more information about the concepts and - ideas behind systemd please refer to the Original Design Document. @@ -535,7 +535,9 @@ disable commands of the systemctl1 - tool. + tool. Full list of directories is provided in + systemd.unit5. + @@ -564,7 +566,9 @@ tool can handle both global (i.e. for all users) and private (for one user) enabling/disabling of - units. + units. Full list of directories is provided in + systemd.unit5. + @@ -607,7 +611,7 @@ - SIGTERM + SIGTERM Upon receiving this signal the systemd system manager @@ -627,7 +631,7 @@ - SIGINT + SIGINT Upon receiving this signal the systemd system manager will @@ -639,11 +643,11 @@ systemd user managers treat this signal the same way as - SIGTERM. + SIGTERM. - SIGWINCH + SIGWINCH When this signal is received the systemd system manager @@ -659,7 +663,7 @@ - SIGPWR + SIGPWR When this signal is received the systemd manager @@ -671,7 +675,7 @@ - SIGUSR1 + SIGUSR1 When this signal is received the systemd manager will try @@ -680,7 +684,7 @@ - SIGUSR2 + SIGUSR2 When this signal is received the systemd manager will log @@ -691,7 +695,7 @@ - SIGHUP + SIGHUP Reloads the complete daemon configuration. This is mostly @@ -700,7 +704,7 @@ - SIGRTMIN+0 + SIGRTMIN+0 Enters default mode, starts the default.target @@ -710,7 +714,7 @@ - SIGRTMIN+1 + SIGRTMIN+1 Enters rescue mode, starts the @@ -721,7 +725,7 @@ - SIGRTMIN+2 + SIGRTMIN+2 Enters emergency mode, starts the @@ -732,7 +736,7 @@ - SIGRTMIN+3 + SIGRTMIN+3 Halts the machine, starts the @@ -743,7 +747,7 @@ - SIGRTMIN+4 + SIGRTMIN+4 Powers off the machine, starts the @@ -754,7 +758,7 @@ - SIGRTMIN+5 + SIGRTMIN+5 Reboots the machine, starts the @@ -765,7 +769,7 @@ - SIGRTMIN+6 + SIGRTMIN+6 Reboots the machine via kexec, starts the @@ -776,31 +780,31 @@ - SIGRTMIN+13 + SIGRTMIN+13 Immediately halts the machine. - SIGRTMIN+14 + SIGRTMIN+14 Immediately powers off the machine. - SIGRTMIN+15 + SIGRTMIN+15 Immediately reboots the machine. - SIGRTMIN+16 + SIGRTMIN+16 Immediately reboots the machine with kexec. - SIGRTMIN+20 + SIGRTMIN+20 Enables display of status messages on the console, as @@ -811,7 +815,7 @@ - SIGRTMIN+21 + SIGRTMIN+21 Disables display of status messages on the console, as @@ -822,23 +826,23 @@ - SIGRTMIN+22 - SIGRTMIN+23 + SIGRTMIN+22 + SIGRTMIN+23 Sets the log level to debug (or info on - SIGRTMIN+23), as + SIGRTMIN+23), as controlled via systemd.log_level=debug (or systemd.log_level=info - on SIGRTMIN+23) on + on SIGRTMIN+23) on the kernel command line. - SIGRTMIN+24 + SIGRTMIN+24 Immediately exits the manager (only available for --user @@ -846,28 +850,28 @@ - SIGRTMIN+26 - SIGRTMIN+27 - SIGRTMIN+28 - SIGRTMIN+29 + SIGRTMIN+26 + SIGRTMIN+27 + SIGRTMIN+28 + SIGRTMIN+29 Sets the log level to journal-or-kmsg (or console on - SIGRTMIN+27, + SIGRTMIN+27, kmsg on - SIGRTMIN+28, + SIGRTMIN+28, or syslog-or-kmsg - on SIGRTMIN+29), as + on SIGRTMIN+29), as controlled via systemd.log_target=journal-or-kmsg (or systemd.log_target=console - on SIGRTMIN+27, + on SIGRTMIN+27, systemd.log_target=kmsg - on SIGRTMIN+28, + on SIGRTMIN+28, or systemd.log_target=syslog-or-kmsg - on SIGRTMIN+29) on + on SIGRTMIN+29) on the kernel command line. @@ -987,7 +991,7 @@ /proc/cmdline instead.: - + systemd.unit= rd.systemd.unit= @@ -1004,7 +1008,7 @@ option prefixed with rd. is honored only in the initial RAM disk (initrd), - while the one that isn't prefixed only + while the one that is not prefixed only in the main system. @@ -1012,9 +1016,9 @@ systemd.dump_core= Takes a boolean - argument. If + argument. If , systemd dumps core when it - crashes. Otherwise no core dump is + crashes. Otherwise, no core dump is created. Defaults to . @@ -1023,9 +1027,9 @@ systemd.crash_shell= Takes a boolean - argument. If + argument. If , systemd spawns a shell when it - crashes. Otherwise no shell is + crashes. Otherwise, no shell is spawned. Defaults to , for security reasons, as the shell is not protected @@ -1040,14 +1044,14 @@ argument. If positive systemd activates the specified virtual terminal when it crashes. Defaults to - -1. + -1. systemd.confirm_spawn= Takes a boolean - argument. If + argument. If , asks for confirmation when spawning processes. Defaults to . @@ -1057,14 +1061,20 @@ systemd.show_status= Takes a boolean - argument. If - shows terse service status updates on - the console during bootup. Defaults to + argument or the constant + auto. If + , shows terse + service status updates on the console + during bootup. + auto behaves like + until a service + fails or there is a significant delay + in boot. Defaults to , unless is passed as kernel command line option in which case it defaults to - . + auto. @@ -1095,34 +1105,43 @@ systemd.setenv= Takes a string - argument in the form - VARIABLE=VALUE. May be used to set - environment variables for the init - process and all its children at boot - time. May be used more than once to - set multiple variables. If the equal - sign and variable are missing it unsets - an environment variable which might be - passed in from the initial ram - disk. + argument in the form VARIABLE=VALUE. + May be used to set default environment + variables to add to forked child processes. + May be used more than once to set multiple + variables. quiet - If passed turns off + Turn off status output at boot, much like systemd.show_status=false would. Note that this option is also read by the kernel itself and disables - kernel log output to the - kernel. Passing this option hence - turns off the usual output from both - the system manager and the + kernel log output. Passing this option + hence turns off the usual output from + both the system manager and the kernel. + + + + + debug + + Turn on debugging + output. This is equivalent to + systemd.log_level=debug. + Note that this option is also read by + the kernel itself and enables kernel + debug output. Passing this option + hence turns on the debug output from + both the system manager and the kernel. + -b emergency Boot into emergency @@ -1206,7 +1225,7 @@ Daemon status notification socket. This is an - AF_UNIX datagram socket and is used to + AF_UNIX datagram socket and is used to implement the daemon notification logic as implemented by sd_notify3. @@ -1219,7 +1238,7 @@ Used internally by the shutdown8 tool to implement delayed - shutdowns. This is an AF_UNIX datagram + shutdowns. This is an AF_UNIX datagram socket. @@ -1230,7 +1249,7 @@ communication channel between systemctl1 and the systemd process. This is an - AF_UNIX stream socket. This interface + AF_UNIX stream socket. This interface is private to systemd and should not be used in external projects. @@ -1254,7 +1273,8 @@ See Also - systemd.conf5, + The systemd Homepage, + systemd-system.conf5, locale.conf5, systemctl1, journalctl1, @@ -1265,7 +1285,8 @@ systemd.special5, pkg-config1, kernel-command-line7, - bootup7 + bootup7, + systemd.directives7