diff options
| -rw-r--r-- | man/systemctl.xml | 107 |
1 files changed, 104 insertions, 3 deletions
diff --git a/man/systemctl.xml b/man/systemctl.xml index 39229a0075..87d783e45d 100644 --- a/man/systemctl.xml +++ b/man/systemctl.xml @@ -392,14 +392,22 @@ along with systemd; If not, see <http://www.gnu.org/licenses/>. <term><option>--runtime</option></term> <listitem> - <para>When used with - <command>enable</command>/<command>disable</command>/<command>is-enabled</command> + <para>When used with <command>enable</command>, + <command>disable</command>, <command>is-enabled</command> (and related commands), make changes only temporarily, so - that they are dropped on the next reboot. This will have the + that they are lost on the next reboot. This will have the effect that changes are not made in subdirectories of <filename>/etc</filename> but in <filename>/run</filename>, with identical immediate effects, however, since the latter is lost on reboot, the changes are lost too.</para> + + <para>Similar, when used with + <command>set-cgroup-attr</command>, + <command>unset-cgroup-attr</command>, + <command>set-cgroup</command> and + <command>unset-cgroup</command>, make changes only + temporarily, so that they are lost on the next + reboot.</para> </listitem> </varlistentry> @@ -631,6 +639,98 @@ along with systemd; If not, see <http://www.gnu.org/licenses/>. human-readable output.</para> </listitem> </varlistentry> + + <varlistentry> + <term><command>get-cgroup-attr <replaceable>NAME</replaceable> <replaceable>ATTRIBUTE</replaceable>...</command></term> + + <listitem> + <para>Retrieve the specified control group attributes of the + specified unit. Takes a unit name and one or more attribute + names such as <literal>cpu.shares</literal>. This will + output the current values of the specified attributes, + separated by new-lines. For attributes that take list of + items the output will be new-line separated, too. This + operation will always try to retrieve the data in question + from the kernel first, and if that is not available use the + configured values instead. Instead of low-level control + group attribute names high-level pretty names may be used, + as used for unit execution environment configuration, see + <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry> + for details. For example, passing + <literal>memory.limit_in_bytes</literal> and + <literal>MemoryLimit</literal> is equivalent.</para> + </listitem> + </varlistentry> + + <varlistentry> + <term><command>set-cgroup-attr <replaceable>NAME</replaceable> <replaceable>ATTRIBUTE</replaceable> <replaceable>VALUE</replaceable>...</command></term> + + <listitem> + <para>Set the specified control group attribute of the + specified unit to the specified value. Takes a unit + name and an attribute name such as + <literal>cpu.shares</literal>, plus one or more values + (multiple values may only be used for attributes that take + multiple values). This operation will immediately update the + kernel attribute for this unit and persistently store this + setting for later reboots (unless <option>--runtime</option> + is passed, in which case the setting is not saved + persistently and only valid until the next reboot.) Instead + of low-level control group attribute names high-level pretty + names may be used, as used for unit execution environment + configuration, see + <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry> + for details. For example, passing + <literal>memory.limit_in_bytes</literal> and + <literal>MemoryLimit</literal> is equivalent. This operation + will implicitly create a control group for the unit in the + controller the attribute belongs to, if needed. For + attributes that take multiple values, this operation will + append the specified values to the previously set values + list (use <command>unset-cgroup-attr</command> to reset the + list explicitly). For attributes that take a single value + only the list will be reset implicitly.</para> + </listitem> + </varlistentry> + + <varlistentry> + <term><command>unset-cgroup-attr <replaceable>NAME</replaceable> <replaceable>ATTRIBUTE</replaceable>...</command></term> + + <listitem><para>Unset the specified control group attributes + of the specified unit. Takes a unit name and one or more + attribut names such as <literal>cpu.shares</literal>. This + operation might or might not have an immediate effect on the + current kernel attribute value. This will remove any + persistently stored configuration values for this attribute + (as set with <command>set-cgroup-attr</command> before), + unless <option>--runtime</option> is passed, in which case the + configuration is reset only until the next reboot. Again, + high-level control group attributes may be used instead of the + low-level kernel ones. For attributes which take multiple + values, all currently set values are reset.</para> + </listitem> + </varlistentry> + + <varlistentry> + <term><command>set-cgroup <replaceable>NAME</replaceable> <replaceable>CGROUP</replaceable>...</command></term> + <term><command>unset-cgroup <replaceable>NAME</replaceable> <replaceable>CGROUP</replaceable>...</command></term> + + <listitem><para>Add or remove a unit to/from a specific + control group hierarchy and/or control group path. Takes a + unit name, plus a control group specification in the syntax + <replaceable>CONTROLLER</replaceable>:<replaceable>PATH</replaceable> + or <replaceable>CONTROLLER</replaceable>. In the latter syntax + (where the path is ommitted) the default unit control group + path is implied. Examples: <literal>cpu</literal> or + <literal>cpu:/foo/bar</literal>. If a unit is removed from a + control group hierarchy all its processes will be moved to the + root group of the hierarchy and all control group attributes + will be reset. These operations are immediately reflected in + the kernel hierarchy, and stored persistently to disk (unless + <option>--runtime</option> is passed).</para> + </listitem> + </varlistentry> + <varlistentry> <term><command>help <replaceable>NAME</replaceable>...|<replaceable>PID</replaceable>...</command></term> @@ -641,6 +741,7 @@ along with systemd; If not, see <http://www.gnu.org/licenses/>. shown.</para> </listitem> </varlistentry> + <varlistentry> <term><command>reset-failed [<replaceable>NAME</replaceable>...]</command></term> |