118 lines
4.9 KiB
XML
118 lines
4.9 KiB
XML
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<chapter id="lj.install.apache_setup">
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<title>Apache</title>
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<abstract>
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<simpara>Apache is the most popular HTTP server software used today, and it's completely free.
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We use Apache for our projects because there is simply no equivalent. In this chapter we'll
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briefly explain how to setup and configure an Apache installation.</simpara>
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</abstract>
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<section id="lj.install.apache_setup.install">
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<title>Installation</title>
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<section id="lj.install.apache_setup.install.mod_perl">
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<title>mod_perl</title>
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<para>
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LiveJournal in the past has been server API agnostic, working on
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either FastCGI or mod_perl, but we've dropped FastCGI support, as
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there's really no need to maintain it anymore. LiveJournal now solely
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requires mod_perl; seeing as how it's everywhere and well supported,
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and you might already have it on your machine. If not, you can read up
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on the official installation docs located at
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<ulink url="http://perl.apache.org/docs/1.0/guide/install.html" />
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</para>
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<caution><para>
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We've found that more people have success when mod_perl is statically
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linked, rather than using a <abbrev>DSO</abbrev>.
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<footnote><simpara>
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Consult <citetitle pubwork="article">
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<ulink url="http://perl.apache.org/docs/1.0/guide/install.html#When_DSO_can_be_Used">
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mod_perl Installation User Guide: When <abbrev>DSO</abbrev> Can Be Used</ulink></citetitle>
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for more information.
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</simpara></footnote>
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</para></caution>
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<tip><title>Debian</title>
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<simpara>Typically, if you already have a working apache installation in Debian
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and would like to install mod_perl support, then installing the package
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<filename>libapache-mod-perl</filename> should suit your needs. Otherwise,
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you should install the package <filename>apache-perl</filename>.
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</simpara></tip>
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</section>
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<section id="lj.install.apache_setup.install.suexec">
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<title>Apache suEXEC Support</title>
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<para>
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If you want the LiveJournal code to run as a user other than
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what your webserver runs as, then you'll need suEXEC<footnote id="suEXEC">
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<simpara><ulink url="http://httpd.apache.org/docs/suexec.html">Official
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Apache suEXEC documentation</ulink></simpara></footnote> support in
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Apache. You're free to figure that out yourself. We'll assume
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your webserver is running as user <systemitem class="username">lj</systemitem>,
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though it doesn't have to run as any certain user to work.
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</para>
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<para>
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In fact, the LiveJournal code never writes to disk, so as long
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as it can write to the database (which is essential, obviously),
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you can run the code as any user, including
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<systemitem class="username">nobody</systemitem> or
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<systemitem class="username">www-data</systemitem>, both
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of which are common in out-of-the-box configurations.
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</para>
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</section>
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<section id="lj.install.apache_setup.install.vhosts">
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<title>Virtual Hosts</title>
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<para>
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You can run the LiveJournal code inside or outside of a
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<literal><VirtualHost></literal> section in Apache's
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<literal>httpd.conf</literal> file. However, make note that you
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can't (yet) have two VirtualHosts running parallel copies of the
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code. In the future we'll fix that, but for now if you really
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need two installations on the same machine, you'll need to run
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two sets of Apache processes, listening on different ports.
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</para>
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</section>
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</section>
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<section id="lj.install.apache_setup.example">
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<title>Example <literal>httpd.conf</literal></title>
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<programlisting><![CDATA[ServerType standalone
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ServerRoot "/etc/apache-perl"
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PidFile /var/run/apache-perl.pid
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ScoreBoardFile /var/run/apache-perl.scoreboard
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Timeout 30
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KeepAlive Off
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MinSpareServers 5
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MaxSpareServers 40
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StartServers 10
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MaxClients 20
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MaxRequestsPerChild 500
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LoadModule mime_module /usr/lib/apache/1.3/mod_mime.so
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LoadModule autoindex_module /usr/lib/apache/1.3/mod_autoindex.so
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LoadModule dir_module /usr/lib/apache/1.3/mod_dir.so
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Port 80
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User lj
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Group lj
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SendBufferSize 131072
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ServerName www.livejournal.com
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PerlSetEnv LJHOME /home/lj
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PerlRequire /home/lj/cgi-bin/modperl.pl
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]]></programlisting>
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<note>
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<para>
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This will work by itself (assuming mod_perl statically linked),
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or you can just tack on parts to your existing config.
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</para>
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<para><filename>/home/lj</filename> is only an example directory. You'll want to use the same directory used in <xref linkend="lj.install.ljhome" />.</para>
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<para>
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If you'd like, you can put those last three lines in a VirtualHost block.
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</para>
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</note>
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</section>
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</chapter>
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<!--
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Local Variables:
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mode:sgml
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sgml-parent-document: ("index.xml" "part" "chapter")
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End:
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-->
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