aboutsummaryrefslogtreecommitdiffstats
path: root/chapter07/sysd-custom.xml
diff options
context:
space:
mode:
authorBruce Dubbs <bdubbs@linuxfromscratch.org>2016-05-24 21:24:59 +0000
committerBruce Dubbs <bdubbs@linuxfromscratch.org>2016-05-24 21:24:59 +0000
commit1118b1757d67c5e7deb4c9e4b864b00f9d8a8b0c (patch)
treecf1411feb617804f8468b98348eff7f377b2ee07 /chapter07/sysd-custom.xml
parent11ebea60aa77e5a8b24f08971e153d05c12a4406 (diff)
Create branches/merge in svn repo fo rtesting of merged LFS books
git-svn-id: http://svn.linuxfromscratch.org/LFS/branches/merge@11073 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
Diffstat (limited to 'chapter07/sysd-custom.xml')
-rw-r--r--chapter07/sysd-custom.xml253
1 files changed, 0 insertions, 253 deletions
diff --git a/chapter07/sysd-custom.xml b/chapter07/sysd-custom.xml
deleted file mode 100644
index e5872ece9..000000000
--- a/chapter07/sysd-custom.xml
+++ /dev/null
@@ -1,253 +0,0 @@
-<?xml version="1.0" encoding="ISO-8859-1"?>
-<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
- "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
- <!ENTITY % general-entities SYSTEM "../general.ent">
- %general-entities;
-]>
-
-<sect1 id="ch-scripts-sysd-custom">
- <?dbhtml filename="sysd-custom.html"?>
-
- <title>Systemd Usage and Confiuration</title>
-
- <indexterm zone="ch-scripts-sysd-custom">
- <primary sortas="e-Systemd">Systemd Customization</primary>
- </indexterm>
-
- <sect2>
- <title>Basic Configuration</title>
-
- <para>The <filename>/etc/systemd/system.conf</filename> file contains a set
- of items to control basic operations. The default file has all entries
- commented out with the default settings indicated. This file is where the
- log level may be changed as well as some basic journal settings.</para>
-
- </sect2>
-
- <sect2>
- <title>Disabling Screen Clearing at Boot Time</title>
-
- <para>The normal behavior for systemd is to clear the secreen at
- the end of the boot sequence. If desired, this behavior may be
- changed by the following:</para>
-
-<screen role="nodump"><userinput>mkdir -p /etc/systemd/system/getty@tty1.service.d
-
-cat > /etc/systemd/system/getty@tty1.service.d/noclear.conf &lt;&lt; EOF
-[Service]
-TTYVTDisallocate=no
-EOF</userinput></screen>
-
- <para>The boot messages can always be revied by using the
- <userinput>journalctl -b</userinput> command as the root user.</para>
-
- </sect2>
-
- <sect2>
- <title>Disabling tmpfs for /tmp </title>
-
- <para>By default, <filename class="directory">/tmp</filename> is created as
- a tmpfs. If this is not desired, it can be overridden by the following:</para>
-
-<screen role="nodump"><userinput>ln -s /dev/null /etc/systemd/system/tmp.mount</userinput></screen>
-
- <para>This is not necessary if there is a separate partition for /tmp
- specified in <filename>/etc/fstab</filename>.</para>
- </sect2>
-
- <sect2>
- <title>Configuring Automatic File Creation and Deletion</title>
-
- <para>There are several services that create or delete files or
- directories:</para>
-
- <itemizedlist>
- <listitem><para>systemd-tmpfiles-clean.service</para></listitem>
- <listitem><para>systemd-tmpfiles-setup-dev.service</para></listitem>
- <listitem><para>systemd-tmpfiles-setup.service</para></listitem>
- </itemizedlist>
-
- <para>The system location for the configuration files is
- <filename>/usr/lib/tmpfiles.d/*.conf</filename>. The local
- configuration files are in <filename>/etc/tmpfiles.d/*.conf</filename>.
- Files in /etc/tmpfiles.d override files with the same name in
- /usr/lib/tmpfiles.d. See <userinput>man tmpfiles.d</userinput>
- for file format details.</para>
-
- </sect2>
-
- <sect2>
- <title>Adding Custom Units and Services</title>
-
- <para>A custom service can be added by creating a directory and
- configuration file in <filename class="directory">/etc/systemd/system/</filename>.
- For example:</para>
-
-<screen role="nodump"><userinput>mkdir -p /etc/systemd/system/foobar.service.d
-
-cat > /etc/systemd/system/foobar.service.d/foobar.conf &lt;&lt; EOF
-[Service]
-Restart=always
-RestartSec=30
-EOF</userinput></screen>
-
- <para>See the man page for systemd.unit for more information. After
- creating the configuration file, run <userinput>systemctl
- daemon-reload</userinput> and <userinput>systemctl restart
- foobar</userinput> to activate a service or changes to a service.</para>
-
- </sect2>
-
- <sect2 id="ch-scripts-systemd-console">
- <title>Setting Console Fonts and Keyboard</title>
-
- <indexterm zone="ch-scripts-systemd-console">
- <primary sortas="d-console">systemd console</primary>
- <secondary>configuring</secondary>
- </indexterm>
-
- <para>This section discusses how to configure the
- <command>systemd-vconsole-setup</command> system service, which configures
- the virtual console font and console keymap.</para>
-
- <para>The <command>systemd-vconsole-setup</command> service reads the
- <filename>/etc/vconsole.conf</filename> file for configuration
- information. Decide which keymap and screen font will be used. Various
- language-specific HOWTOs can also help with this, see <ulink
- url="http://www.tldp.org/HOWTO/HOWTO-INDEX/other-lang.html"/>.
- Examine <command>localectl list-keymaps</command> output for a list of
- valid console keymaps. Look in
- <filename class="directory">/usr/share/consolefonts</filename>
- directory for valid screen fonts.</para>
-
- <para>The <filename>/etc/vconsole.conf</filename> file should contain lines
- of the form: VARIABLE="value". The following variables are recognized:</para>
-
- <variablelist>
-
- <varlistentry>
- <term>KEYMAP</term>
- <listitem>
- <para>This variable specifies the key mapping table for the keyboard. If
- unset, it defaults to <literal>us</literal>.</para>
- </listitem>
- </varlistentry>
-
- <varlistentry>
- <term>KEYMAP_TOGGLE</term>
- <listitem>
- <para>This variable can be used to configure a second toggle keymap and
- is unset by default.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>FONT</term>
- <listitem>
- <para>This variable specifies the font used by the virtual
- console.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>FONT_MAP</term>
- <listitem>
- <para>This variable specifies the console map to be used.</para>
- </listitem>
- </varlistentry>
-
- <varlistentry>
- <term>FONT_UNIMAP</term>
- <listitem>
- <para>This variable specifies the unicode font map.</para>
- </listitem>
- </varlistentry>
-
- </variablelist>
-
- <para>An example for a German keyboard and console is given below:</para>
-
-<screen role="nodump"><userinput>cat &gt; /etc/vconsole.conf &lt;&lt; "EOF"
-<literal>KEYMAP=de-latin1
-FONT=Lat2-Terminus16</literal>
-EOF</userinput></screen>
-
- <para>You can change KEYMAP value at runtime by using the
- <command>localectl</command> utility:</para>
-
-<screen role="nodump"><userinput>localectl set-keymap MAP</userinput></screen>
-
- <note><para>Please note that <command>localectl</command> command can
- be used only on a system booted with Systemd.</para></note>
-
- </sect2>
-
- <sect2>
- <title>Clock Configuration</title>
-
- <indexterm zone="ch-scripts-clock">
- <primary sortas="d-clock">clock</primary>
- <secondary>configuring</secondary></indexterm>
-
- <para>This section discusses how to configure the
- <command>systemd-timedated</command> system service, which configures
- system clock and timezone.</para>
-
- <para><command>systemd-timedated</command> reads
- <filename>/etc/adjtime</filename>, and depending on the contents of the file,
- it sets the clock to either UTC or local time. Create the
- <filename>/etc/adjtime</filename> file with the following contents <emphasis>if your
- hardware clock is set to local time</emphasis>:</para>
-
-<screen role="nodump"><userinput>cat &gt; /etc/adjtime &lt;&lt; "EOF"
-<literal>0.0 0 0.0
-0
-LOCAL</literal>
-EOF</userinput></screen>
-
- <para>If <filename>/etc/adjtime</filename> isn't present at first boot,
- <command>systemd-timedated</command> will assume that hardware clock is
- set to UTC and create the file using that setting.</para>
-
- <para>You can also use the <command>timedatectl</command> utility to tell
- <command>systemd-timedated</command> if your hardware clock is set to
- UTC or local time:</para>
-
-<screen role="nodump"><userinput>timedatectl set-local-rtc 1</userinput></screen>
-
- <para><command>timedatectl</command> can also be used to change system time and
- time zone.</para>
-
- <para>To change your current system time, issue:</para>
-
-<screen role="nodump"><userinput>timedatectl set-time YYYY:MM:DD HH:MM:SS</userinput></screen>
-
- <para>Hardware clock will also be updated accordingly.</para>
-
- <para>To change your current time zone, issue:</para>
-
-<screen role="nodump"><userinput>timedatectl set-timezone TIMEZONE</userinput></screen>
-
- <para>You can get list of available time zones by running:</para>
-
-<screen role="nodump"><userinput>timedatectl list-timezones</userinput></screen>
-
- <note><para>The <command>timedatectl</command> command can
- be used only on a system booted with Systemd.</para></note>
-
- </sect2>
-
- <sect2>
- <title>Debugging the Boot Sequence</title>
-
- <para>There are several commands that can be used to help debug the systemd
- boot process. Here are some examples:</para>
-
- <itemizedlist>
- <listitem><para>systemctl list-units -t service [--all]</para></listitem>
- <listitem><para>systemctl list-units -t target [--all]</para></listitem>
- <listitem><para>systemctl show -p Wants multi-user.target</para></listitem>
- <listitem><para>systemctl status sshd.service</para></listitem>
- </itemizedlist>
-
- </sect2>
-
-</sect1>