From c3659702b4d0621f8a8a1379d03d822c63d90f7e Mon Sep 17 00:00:00 2001
From: Petter Reinholdtsen <pere@hungry.com>
Date: Sat, 19 Jul 2003 22:35:54 +0000
Subject: [PATCH] More text on the slides.

---
 mypapers/debconf-install/debconf-install.html | 256 ++++++++++++++----
 1 file changed, 203 insertions(+), 53 deletions(-)

diff --git a/mypapers/debconf-install/debconf-install.html b/mypapers/debconf-install/debconf-install.html
index 13cc64bd5e..ff3858294b 100644
--- a/mypapers/debconf-install/debconf-install.html
+++ b/mypapers/debconf-install/debconf-install.html
@@ -11,75 +11,225 @@
     <h1>Automated installations in Skolelinux
       <br>using debian-installer and base-config</h1>
 
-    <p>Nice summary</p>
+    <p>Skolelinux is a Debian-based Linux distribution with simple
+      installation and preconfigured services targeted for schools.
+      The presentation will present how the standard debian
+      installation system is customised for this purpose.</p>
 
     <div class="presenter">Petter Reinholdtsen
       <br>pere@hungry.com
-      <br>Debconf3, 2003-07-19</div>
+      <br>Debconf3, 2003-07-20</div>
 
     <h2>Skolelinux</h2>
+    <ul>
+      <li>Based on Debian/Woody (to get security updates)
+      <li>Simple installation
 
-    - based on Debian/Woody
-    - simple installation
-    - preconfigured services (syslog, dns, dhcp, ntp, nfs, smb, smtp,
-      imap, ldap, http, ipp, web-proxy, ssh, ltsp and more)
+      <li>Translated to several local languages
+      <li>Includes all the software needed in primary schools
 
-    - translated to local language
-    - only userfriendly licenses
-    - admin friendly
-    - scalable
+      <li>Preconfigured services (syslog, dns, ntp, dhcp, ssh, ldap,
+          nfs, smb, smtp, imap, ipp, http, web-proxy, ltsp and more)
+
+      <li>No license administration
+      <li>Admin friendly
+      <li>Scalable
+    </ul>
+
+    <h2>The Skolelinux architecture</h2>
+
+    <p><img src="http://developer.skolelinux.no/arkitektur/network-arch_en.jpg">
 
     <h2>The skolelinux install</h2>
+    <ul>
+      <li>Simple (two questions and the root password)
+      <li>Automatic
+      <li>Using debian-installer (d-i) and base-config (b-c)
+      <li>Complete (everything work out of the box)
+      <li>Very little skolelinux-specific code (two udebs and three
+	config packages).
+      <li>Rewriting the config of other packages to get the services
+	preconfigured out of the box (against policy?)
 
-    - simple
-    - automatic
-    - using debian-installer (d-i) and base-config (b-c)
-    - complete
-    - preconfigured services (list them)
+    </ul>
 
-    <h2>debian installation</h2>
-    - booting from cd/floppy/net/whatever
-    - making HD bootable
-    - booting from hd
-    - installing the rest
+    <h2>The two stages of the Debian installation</h2>
+    <h3>First stage (debian-installer)</h3>
+    <ul>
+      <li>Booting from cd/floppy/net/whatever
+      <li>Installing base system
+      <li>Making HD bootable
+    </ul>
+    <h3>Second stage stage (base-config)</h3>
+    <ul>
+      <li>Booting from HD
+      <li>Installing and configuring the non-base system
+    </ul>
 
-    <h2>debian-installer</h2>
-    - modular
-    - extendable
-    - mostly automatic
-    - flexible
+    <h2>The first stage (debian-installer)</h2>
+    <ul>
+      <li>Modular
+      <li>Extendible
+      <li>Using debconf to ask questions
+      <li>Can be mostly automatic
+      <li>Very Flexible
+    </ul>
 
     <h2>debian-installer structure</h2>
-    - selector for installer modules (udeb)
-    - select language and region
-    - autodetect hardware
-    - locate APT source (CD, Net or floppy)
-    - load the rest of the installer modules
-    - partition hard-drive
-    - make filesystems /swap
-    - mount filesystems
-    - install base system
-    - install kernel
-    - install boot loader
+    <ul>
+      <li>Selector for installer modules (udebs)
+      <li>Select language and region
+      <li>Autodetect hardware
+      <li>Locate APT source (CD, Net or floppy)
+      <li>Load the rest of the installer modules
+      <li>Partition hard-drive
+      <li>Make filesystems or swap
+      <li>Mount filesystems
+      <li>Install base system
+      <li>Install kernel
+      <li>Install boot loader
+      <li>Reboot
+    </ul>
 
     <h2>debian-installer hooks</h2>
-    - include or exclude d-i modules
-    - running script at boot time
-    - include or excluding packages going into the HD
-    - running scripts before reboot
-    - adjust partitioning
-
-    <h2>base-config</h2>
-    - structure
-    - hooks
-
-    <h2>skolelinux specifict code</h2>
-    first stage
-     - profile
-     - extra packages
-    second stage
-     - automatic install
-     - automatic configuration
+    <ul>
+      <li>Include or exclude d-i modules
+      <li>Running script at install system boot time
+      <li>Include or excluding packages going into the HD
+      <li>Running scripts before reboot from HD
+      <li>Partitioning
+    </ul>
+
+    <h2>The second stage (base-config)</h2>
+    <ul>
+      <li>Executed from init on first boot
+      <li>Modular (reading /usr/lib/base-config)
+      <li>Able to adjust the order of the scripts on the fly using
+	return codes.
+      <li>Partly using debconf for configuration decisions.
+    </ul>
+
+    <h2>base-config structure</h2>
+    <ul>
+      <li>Generate locale if needed
+      <li>Start terminal emulator (for non-ascii installs) if needed
+      <li>Load variables based from first stage (/root/dbootstrap_settings)
+      <li>Turn off screen saver
+      <li>Show intro screen
+      <li>Set up console keyboard
+      <li>Set up time zone
+      <li>Configure /etc/passwd, root password and local user
+      <li>Enable ppp?
+      <li>Configure APT sources
+      <li>Select packages to install
+      <li>Fetch packages
+      <li>Configure exim
+      <li>Disable ppp?
+      <li>Show "successful install" screen
+      <li>Rewrite /etc/inittab to not start base-config on next boot
+    </ul>
+
+    <h2>base-config hooks</h2>
+      <ul>
+	<li>add scripts to /usr/lib/base-config/
+	<li>update debconf database
+      </ul>
+    </ul>
+
+    <h2>Skolelinux specific code</h2>
+    <h3>First stage</h3>
+    <ul>
+       <li>Ask about profile with automatic partitioning
+       <li>Reorder d-i module order using dependencies and menu-item value
+       <li>Install extra packages into the HD
+       <li>Pass info to second stage
+    </ul>
+    <h3>Second stage</h3>
+    <ul>
+       <li>Preload debconf answers based on profile question
+       <li>Automatically install packages
+       <li>Rewrite/replace config files
+       <li>Restart servers (except kdm)
+       <li>Check installation
+       <li>Restart kdm
+    </ul>
+
+    <h2>Some solved problems</h2>
+    <ul>
+
+      <li>Preloading debconf answers need a dummy question template
+
+      <li>Packages with insufficient install configuration support
+	get their config files rewritten using cfengine.
+
+      <li>Selecting packages to install using meta-packages.
+
+      <li>
+
+    </ul>
+
+    <h2>Conclusion</h2>
+
+    <ul>
+      <li>The current debian-installer is extendible and can do
+	automated installation, with the hooks needed by Skolelinux.
+
+      <li>The current base-config is is flexible enough for
+	Skolelinux, but could use more hooks to reduce the amount of
+	Skolelinux specific code.
+    </ul>
+
+    <h2>References</h2>
+
+    <ul>
+
+      <li><a href="http://www.skolelinux.no/">Skolelinux web site</a>
+      <li><a href="http://developer.skolelinux.no/">Skolelinux
+	  developers web site</a>
+      <li><a href="http://developer.skolelinux.no/arkitektur/arkitektur.html.en">The Skolelinux architeture description</a>
+      <li><a href="http://people.debian.org/~pere/debian-installer/">Debian
+	  installer web page</a>
+    </ul>
+
+    <h2>Thank you very much</h2>
+
+    <h3>Questions?</h3>
+
+    <p>This presentation is available from
+    <tt>http://www.hungry.com/~pere/mypapers/debconf-install/debconf-install.html</tt>
+
+<!--
+
+ Random notes for the introduction to debconf.
+
+  My name is Petter Reinholdtsen.  I am president of the norwegian
+  unix user group and the system architect for skolelinux.  I am also
+  the head of the group of local organisers of debcamp and debconf.
+  If you have any problems unsolvable for the help desk, please
+  contact me or Andreas and we will find a solution.
+
+  NUUG and Skolelinux are very pleased to assist in making this
+  conference happening, and we appreciate the progress done during
+  debcamp.
+
+  Some practical details:
+
+   - ask at the 
+   - remember to hand in food cupons 
+
+  For the norwegian audience: NUUG prize will be handed out this fall.
+  We need nominations
+
+  For the rest of you: Keep up the good work, and good luck with the
+  conference.
+
+
+d-i meeting:
+ - kernel module split (netcard, scsi)
+ - discover2
+ - 
+
+-->
 
   </body>
 </html>
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