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doc: Mention the 3 processes that make up Hydra.

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Ludovic Courtès 2011-03-16 22:50:02 +00:00
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doc/manual/installation.xml
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@ -169,34 +169,47 @@ export HYDRA_DATA=/var/lib/hydra</screen>
</section>
<section>
<title>Getting started</title>
<title>Getting Started</title>
<para>
To start the Hydra webserver, execute:
To start the Hydra web server, execute:
<screen>
hydra_server.pl</screen>
When the server is started, you can browse to <ulink>http://localhost:3000/</ulink> to start configuring your Hydra instance.
When the server is started, you can browse to
<ulink>http://localhost:3000/</ulink> to start configuring
your Hydra instance.
</para>
<para>
The <command>hydra_server.pl</command> command launches the
web server. There are two other processes that come into
play:
<itemizedlist>
<listitem>
The <emphasis>evaluator</emphasis> is responsible for
peridically evaluating job sets, checking out their
dependencies off their version control systems (VCS),
and queueing new builds if the result of the evaluation
changed. It is launched by the
<command>hydra_evaluator.pl</command> command.
</listitem>
<listitem>
The <emphasis>queue runner</emphasis> launches builds
(using Nix) as they are queued by the evaluator,
scheduling them onto the configured Nix hosts. It is
launched using the
<command>hydra_queue_runner.pl</command> command.
</listitem>
</itemizedlist>
All three processes must be running for Hydra to be fully
functional, though it's possible to temporarily stop any one
of them for maintenance purposes, for instance.
</para>
</section>
<section>
<title>Example: PatchELF</title>
<para>
</para>
<subsection>
<title>Defining jobsets</title>
<para>
</para>
</subsection>
<subsection>
<title>Creating views</title>
<para>
</para>
</subsection>
</section>
</chapter>