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author | Bruce Dubbs <bdubbs@linuxfromscratch.org> | 2016-05-24 21:24:59 +0000 |
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committer | Bruce Dubbs <bdubbs@linuxfromscratch.org> | 2016-05-24 21:24:59 +0000 |
commit | 1118b1757d67c5e7deb4c9e4b864b00f9d8a8b0c (patch) | |
tree | cf1411feb617804f8468b98348eff7f377b2ee07 /chapter07/sysd-custom.xml | |
parent | 11ebea60aa77e5a8b24f08971e153d05c12a4406 (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.xml | 253 |
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 << 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 << 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 > /etc/vconsole.conf << "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 > /etc/adjtime << "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> |