documentation: Rewrite installation guide to use new init process

Now that installation is more or less just one command with a guided
interaction asking configuration questions we can start to simplify
the user guide.

Change-Id: Id98f9843d29e1fe0b445c2a714ace9ec3938ff79
Signed-off-by: Shawn O. Pearce <sop@google.com>

Documentation/install-j2ee.txt

@@ -0,0 +1,116 @@
+Gerrit Code Review - J2EE Installation
+======================================
+
+Description
+-----------
+
+Gerrit binary distributions include a standalone Jetty servlet
+container, but are packaged as a standard WAR file to permit easy
+deployment to other existing container installations if using the
+standalone daemon is not desired.
+
+Gerrit Code Review can be installed into any J2EE servlet container,
+including popular open source containers such as Jetty or Tomcat, or
+any commerical server which supports the J2EE servlet specification.
+
+
+Installation
+------------
+
+* Complete the link:install.html#createdb[database setup] and
+  link:install.html#init[site initialization] tasks described
+  in the standard installation documentation.
+
+* Stop the embedded deamon that was automatically started by 'init':
++
+----
+  review_site/bin/gerrit.sh stop
+----
+
+* Deploy the 'gerrit.war' file to your application server.
++
+The deployment process differs between servers, but typically this
+can be accomplished by copying 'gerrit.war' into the 'webapps/'
+subdirectory of the container's installation.
+
+* Configure JNDI DataSource 'jdbc/ReviewDb'.
++
+This DataSource must point to the database you created above.
+Don't forget to ensure your JNDI configuration can load the
+necessary JDBC drivers.  You may wish to ensure connection pooling
+is configured and enabled within the DataSource.
+
+* ('Optional') Install Bouncy Castle Crypto API
++
+If you enabled Bouncy Castle Crypto during 'init', copy the JAR
+from `'$site_path'/lib` into your servlet container's extensions
+directory so its available to Gerrit Code Review.
+
+
+Jetty 7.x
+---------
+These directions will configure Gerrit as the default web
+application, allowing URLs like `http://example.com/4543` to jump
+directly to change 4543.
+
+Download and unzip a release version of Jetty.  From here on we
+call the unpacked directory `$JETTY_HOME`.
+
+* link:http://www.eclipse.org/jetty/downloads.php[Jetty Downloads]
+
+If this is a fresh installation of Jetty, move into the installation
+directory and do some cleanup to remove the sample webapps:
+----
+  cd $JETTY_HOME
+  rm -rf contexts/* webapps/*
+----
+
+Copy Gerrit Code Review into the deployment:
+----
+  cp ~/gerrit.war webapps/gerrit.war
+  java -jar webapps/gerrit.war cat extra/jetty7/gerrit.xml >contexts/gerrit.xml
+----
+
+Install the required additional libraries by copying them into the
+`'$JETTY_HOME'/lib/ext` directory:
+
+----
+  cp ../review_db/lib/* lib/ext/
+  java -jar webapps/gerrit.war cat lib/commons-dbcp-1.2.2.jar >lib/ext/commons-dbcp-1.2.2.jar
+  java -jar webapps/gerrit.war cat lib/commons-pool-1.5.3.jar >lib/ext/commons-pool-1.5.3.jar
+  java -jar webapps/gerrit.war cat lib/h2-1.2.122.jar >lib/ext/h2-1.2.122.jar
+  java -jar webapps/gerrit.war cat lib/postgresql-8.4-701.jdbc4.jar >lib/ext/postgresql-8.4-701.jdbc4.jar
+----
+
+Edit `'$JETTY_HOME'/contexts/gerrit.xml` to correctly configure
+the database and outgoing SMTP connections, especially the user
+and password fields.
+
+If OpenID authentication (or certain enterprise single-sign-on
+solutions) is being used, you may need to increase the
+header buffer size parameter, due to very long header lines
+being used by the OpenID authentication handshake process.
+Add the following to `'$JETTY_HOME'/etc/jetty.xml` under
+`org.eclipse.jetty.server.nio.SelectChannelConnector`:
+
+----
+  <Set name="headerBufferSize">16384</Set>
+----
+
+To start automatically when the system boots, create a start
+script and modify it for your configuration:
+
+----
+  java -jar webapps/gerrit.war --cat extra/jetty7/gerrit-jetty.sh >/etc/init.d/gerrit-jetty.sh
+  vi /etc/init.d/gerrit-jetty.sh
+----
+
+[TIP]
+Under Jetty, restarting the web application (e.g. after modifying
+`system_config`) is as simple as touching the context config file:
+`'$JETTY_HOME'/contexts/gerrit.xml`
+
+
+GERRIT
+------
+Part of link:index.html[Gerrit Code Review]