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man: complete service.special(7) man page
This commit is contained in:
Lennart Poettering
parent
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commit
bd3d19a4ea
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@ -48,22 +48,38 @@
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</refnamediv>
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<refsynopsisdiv>
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<para><filename>basic.target</filename></para>
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<para><filename>ctrl-alt-del.target</filename></para>
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<para><filename>default.target</filename></para>
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<para><filename>emergency.service</filename></para>
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<para><filename>graphical.target</filename></para>
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<para><filename>halt.target</filename></para>
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<para><filename>kbrequest.target</filename></para>
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<para><filename>local-fs.target</filename></para>
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<para><filename>multi-user.target</filename></para>
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<para><filename>network.target</filename></para>
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<para><filename>nss-lookup.target</filename></para>
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<para><filename>poweroff.target</filename></para>
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<para><filename>reboot.target</filename></para>
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<para><filename>remote-fs.target</filename></para>
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<para><filename>rescue.target</filename></para>
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<para><filename>rpcbind.target</filename></para>
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<para><filename>rtc-set.target</filename></para>
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<para><filename>runlevel0.target</filename>,
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<filename>runlevel0.target</filename>,
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<filename>runlevel1.target</filename>,
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<filename>runlevel2.target</filename>,
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<filename>runlevel3.target</filename>,
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<filename>runlevel4.target</filename>,
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<filename>runlevel5.target</filename>,
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<filename>runlevel6.target</filename></para>
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<para><filename>shutdown.target</filename></para>
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<para><filename>sigpwr.target</filename></para>
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<para><filename>sockets.target</filename></para>
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<para><filename>swap.target</filename></para>
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<para><filename>syslog.target</filename></para>
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<para><filename>systemd-initctl.service</filename></para>
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<para><filename>systemd-initctl.socket</filename></para>
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<para><filename>systemd-logger.service</filename></para>
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<para><filename>systemd-logger.socket</filename></para>
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<para><filename>systemd-initctl.service</filename>, <filename>systemd-initctl.socket</filename></para>
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<para><filename>systemd-logger.service</filename>, <filename>systemd-logger.socket</filename></para>
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</refsynopsisdiv>
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<refsect1>
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@ -78,6 +94,58 @@
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<title>Special System Units</title>
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<variablelist>
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<varlistentry>
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<term><filename>basic.target</filename></term>
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<listitem>
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<para>A special target unit
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covering early boot-up.</para>
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<para>systemd automatically
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adds dependencies of the types
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Requires and After for this
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target unit to all SysV
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service units configured for
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runlevel 1 to 5.</para>
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<para>systemd automatically
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adds dependencies of the types
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Wants and After for all
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SysV service units configured
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for runlevels that are not 0
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to 6 to this target unit.
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This covers the special
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boot-up runlevels some
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distributions have, such as S
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or b.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><filename>ctrl-alt-del.target</filename></term>
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<listitem>
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<para>systemd starts this
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target whenever
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Control+Alt+Del is pressed on
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the console. Usually this
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should be aliased (symlinked)
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to
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<filename>reboot.target</filename>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><filename>default.target</filename></term>
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<listitem>
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<para>The default unit systemd
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starts at bootup. Usually this
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should be aliased (symlinked)
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to
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<filename>multi-user.target</filename>
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or
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<filename>graphical.target</filename>.</para>
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<para>The default unit systemd
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starts at bootup can be
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overriden with the
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<varname>systemd.default=</varname>
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kernel command line option.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><filename>emergency.service</filename></term>
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<listitem>
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@ -92,17 +160,56 @@
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><filename>graphical.target</filename></term>
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<listitem>
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<para>A special target unit
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for setting up a graphical
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login screen. This pulls in
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<filename>multi-user.target</filename>.</para>
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<para>Units that are needed
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for graphical login shall add
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Wants dependencies for their
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unit to this unit (or
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<filename>multi-user.target</filename>)
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during installation.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><filename>halt.target</filename></term>
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<listitem>
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<para>A special target unit
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for shutting down and halting the system.</para>
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<para>Applications wanting to
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halt the system should start
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this unit.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><filename>kbrequest.target</filename></term>
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<listitem>
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<para>systemd starts this
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target whenever Alt+ArrowUp is
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pressed on the console. This
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is a good candidate to be
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aliased (symlinked) to
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<filename>rescue.target</filename>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><filename>local-fs.target</filename></term>
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<listitem>
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<para>systemd automatically
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adds dependencies of type
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After to all mount units that
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refer to local mount
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points. In addition, systemd
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adds dependencies of type
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Wants to those mounts listed
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in
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refer to local mount points
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for this target unit. In
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addition, systemd adds
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dependencies of type Wants to
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this target unit for those
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mounts listed in
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<filename>/etc/fstab</filename>
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that have the
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<literal>auto</literal> and
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@ -111,21 +218,39 @@
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<para>systemd automatically
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adds dependencies of type
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After to this target unit for
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all SysV init scripts with an
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LSB header referring to the
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After for this target unit to
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all SysV init script service
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units with an LSB header
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referring to the
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<literal>$local_fs</literal>
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facility.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><filename>multi-user.target</filename></term>
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<listitem>
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<para>A special target unit
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for setting up a multi-user
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system (non-graphical). This
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is pulled in by
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<filename>graphical.target</filename>.</para>
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<para>Units that are needed
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for a multi-user system shall
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add Wants dependencies to
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this unit for their unit during
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installation.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><filename>network.target</filename></term>
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<listitem>
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<para>systemd automatically
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adds dependencies of type
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After to this target unit for
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all SysV init scripts with an
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LSB header referring to the
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After for this target unit to
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all SysV init script service
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units with an LSB header
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referring to the
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<literal>$network</literal>
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facility.</para>
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</listitem>
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@ -135,34 +260,83 @@
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<listitem>
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<para>systemd automatically
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adds dependencies of type
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After to this target unit for
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all SysV init scripts with an
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LSB header referring to the
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After for this target unit to
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all SysV init script service
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units with an LSB header
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referring to the
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<literal>$named</literal>
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facility.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><filename>poweroff.target</filename></term>
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<listitem>
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<para>A special target unit
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for shutting down and powering off the system.</para>
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<para>Applications wanting to
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power off the system should start
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this unit.</para>
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<para><filename>runlevel0.target</filename>
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is an alias for this target
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unit, for compatibility with SysV.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><filename>reboot.target</filename></term>
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<listitem>
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<para>A special target unit
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for shutting down and rebooting the system.</para>
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<para>Applications wanting to
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reboot the system should start
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this unit.</para>
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<para><filename>runlevel6.target</filename>
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is an alias for this target
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unit, for compatibility with SysV.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><filename>remote-fs.target</filename></term>
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<listitem>
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<para>Similar to <filename>local-fs.target</filename>, but for remote mount points.</para>
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<para>Similar to
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<filename>local-fs.target</filename>,
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but for remote mount
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points.</para>
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<para>systemd automatically
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adds dependencies of type
|
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After to this target unit for
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all SysV init scripts with an
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LSB header referring to the
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After for this target unit to
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all SysV init script service
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units with an LSB header
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referring to the
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<literal>$remote-fs</literal>
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facility.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
|
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<term><filename>rescue.target</filename></term>
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<listitem>
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<para>A special target unit
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for setting up the base system
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and a rescue shell.</para>
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<para><filename>runlevel1.target</filename>
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is an alias for this target
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unit, for compatibility with SysV.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
|
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<term><filename>rpcbind.target</filename></term>
|
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<listitem>
|
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<para>systemd automatically
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adds dependencies of type
|
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After to this target unit for
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all SysV init scripts with an
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LSB header referring to the
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After for this target unit to
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all SysV init script service
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units with an LSB header
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referring to the
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<literal>$rpcbind</literal>
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facility.</para>
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</listitem>
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|
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@ -172,13 +346,107 @@
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<listitem>
|
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<para>systemd automatically
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adds dependencies of type
|
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After to this target unit for
|
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all SysV init scripts with an
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LSB header referring to the
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After for this target unit to
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all SysV init script service
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units with an LSB header
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referring to the
|
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<literal>$time</literal>
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facility.</para>
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</listitem>
|
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</varlistentry>
|
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<varlistentry>
|
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<term><filename>runlevel0.target</filename></term>
|
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<listitem>
|
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<para>This is a target that is
|
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called whever the SysV
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compatibility code asks for
|
||||
runlevel 0. This is an alias
|
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for
|
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<filename>poweroff.target</filename>,
|
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for compatibility with
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SysV.</para>
|
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</listitem>
|
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</varlistentry>
|
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<varlistentry>
|
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<term><filename>runlevel1.target</filename></term>
|
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<listitem>
|
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<para>This is a target that is
|
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called whever the SysV
|
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compatibility code asks for
|
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runlevel 1. This is an alias
|
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for
|
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<filename>rescue.target</filename>,
|
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for compatibility with
|
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SysV.</para>
|
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</listitem>
|
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</varlistentry>
|
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<varlistentry>
|
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<term><filename>runlevel2.target</filename></term>
|
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<listitem>
|
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<para>This is a target that is
|
||||
called whever the SysV
|
||||
compatibility code asks for
|
||||
runlevel 2. It is a good idea
|
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to make this an alias for
|
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(i.e. symlink to)
|
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<filename>multi-user.target</filename>.</para>
|
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</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term><filename>runlevel3.target</filename></term>
|
||||
<listitem>
|
||||
<para>This is a target that is
|
||||
called whever the SysV
|
||||
compatibility code asks for
|
||||
runlevel 3. It is a good idea
|
||||
to make this an alias for
|
||||
(i.e. symlink to)
|
||||
<filename>multi-user.target</filename>
|
||||
or
|
||||
<filename>graphical.target</filename>.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term><filename>runlevel4.target</filename></term>
|
||||
<listitem>
|
||||
<para>This is a target that is
|
||||
called whever the SysV
|
||||
compatibility code asks for
|
||||
runlevel 4. It is a good idea
|
||||
to make this an alias for
|
||||
(i.e. symlink to)
|
||||
<filename>multi-user.target</filename>
|
||||
or
|
||||
<filename>graphical.target</filename>.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term><filename>runlevel5.target</filename></term>
|
||||
<listitem>
|
||||
<para>This is a target that is
|
||||
called whever the SysV
|
||||
compatibility code asks for
|
||||
runlevel 5. It is a good idea
|
||||
to make this an alias for
|
||||
(i.e. symlink to)
|
||||
<filename>multi-user.target</filename>
|
||||
or
|
||||
<filename>graphical.target</filename>.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term><filename>runlevel6.target</filename></term>
|
||||
<listitem>
|
||||
<para>This is a target that is
|
||||
called whever the SysV
|
||||
compatibility code asks for
|
||||
runlevel 6. This is an alias
|
||||
for
|
||||
<filename>reboot.target</filename>,
|
||||
for compatibility with
|
||||
SysV.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term><filename>shutdown.target</filename></term>
|
||||
<listitem>
|
||||
|
|
@ -188,17 +456,18 @@
|
|||
|
||||
<para>Services that shall be
|
||||
terminated on system shutdown
|
||||
shall add Wants dependencies
|
||||
from this unit to their
|
||||
service unit during
|
||||
shall add Conflicts
|
||||
dependencies to this unit for
|
||||
their service unit during
|
||||
installation.</para>
|
||||
|
||||
<para>systemd automatically
|
||||
adds dependencies of type
|
||||
Conflicts to this target unit
|
||||
for all SysV init scripts that
|
||||
shall be terminated in SysV
|
||||
runlevels 0 or 6.</para>
|
||||
for all SysV init script
|
||||
service units that shall be
|
||||
terminated in SysV runlevels 0
|
||||
or 6.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
|
|
@ -208,7 +477,7 @@
|
|||
started when systemd receives
|
||||
the SIGPWR process signal,
|
||||
which is normally sent by the
|
||||
kernel or UPS daemons when the
|
||||
kernel or UPS daemons when
|
||||
power fails.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
|
@ -221,8 +490,8 @@
|
|||
|
||||
<para>Services that can be
|
||||
socket-activated shall add
|
||||
Wants dependencies from this
|
||||
unit to their socket unit
|
||||
Wants dependencies to this
|
||||
unit for their socket unit
|
||||
during installation.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
|
@ -240,9 +509,10 @@
|
|||
<listitem>
|
||||
<para>systemd automatically
|
||||
adds dependencies of type
|
||||
After to this target unit for
|
||||
all SysV init scripts with an
|
||||
LSB header referring to the
|
||||
After for this target unit to
|
||||
all SysV init script service
|
||||
units with an LSB header
|
||||
referring to the
|
||||
<literal>$syslog</literal>
|
||||
facility.</para>
|
||||
|
||||
|
|
@ -250,9 +520,10 @@
|
|||
ensure that this target pulls
|
||||
in a service unit with the
|
||||
name or alias of
|
||||
<filename>@SPECIAL_SYSLOG_NAME@</filename> (or a
|
||||
socket unit that activates
|
||||
this service).</para>
|
||||
<filename>@SPECIAL_SYSLOG_SERVICE@</filename>
|
||||
(or a socket unit that
|
||||
activates this
|
||||
service).</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
|
|
@ -279,10 +550,10 @@
|
|||
<varlistentry>
|
||||
<term><filename>systemd-logger.service</filename></term>
|
||||
<listitem>
|
||||
<para>This is used internally
|
||||
<para>This is internally used
|
||||
by systemd to provide syslog
|
||||
logging to started
|
||||
processes.</para>
|
||||
logging to the processes it
|
||||
maintains.</para>
|
||||
<para>This is a
|
||||
socket-activated service, see
|
||||
<filename>system-logger.socket</filename>.</para>
|
||||
|
|
@ -293,7 +564,14 @@
|
|||
<listitem>
|
||||
<para>Socket activation unit
|
||||
for
|
||||
<filename>system-logger.service</filename>.</para>
|
||||
<filename>system-logger.service</filename>. systemd
|
||||
will automatically add
|
||||
dependencies of types Requires
|
||||
and After to all units that
|
||||
have been configured for
|
||||
stdout or stderr to be
|
||||
connected to syslog or the
|
||||
kernel log buffer.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
</variablelist>
|
||||
|
|
@ -305,6 +583,7 @@
|
|||
<para>When systemd runs as a service instance, the
|
||||
following special units are available, which have
|
||||
similar definitions as their system counterparts:
|
||||
<filename>default.target</filename>,
|
||||
<filename>local-fs.target</filename>,
|
||||
<filename>remote-fs.target</filename>,
|
||||
<filename>shutdown.target</filename>,
|
||||
|
|
|
|||
Loading…
Reference in a new issue