Live GIS Build

= Getting started =

The first thing you will have to do is check-out the latest build scripts using Subversion (SVN): svn checkout https://svn.osgeo.org/osgeo/livedvd/gisvm/trunk


 * see here for more details.

=How to add your project to OSGeo Live=


 * Instructions for adding new projects

= Creating a fresh Virtual Machine to use as a build host (Optional) = Refer to: Live_GIS_Virtual_Machine.

= Build the Live DVD ISO image =

Build ISO
This section describes the new method for building OSGeoLive as described in official ubuntu wiki. This section is self-contained and there is no need to perform any of the procedures described above.

All you need is a running Ubuntu/Xubuntu/Kubuntu installation (even within a virtual machine as long as it has ~20GB free disk space). All needed to be done are the following steps under a "user" account:

host$ cd /tmp host$ wget https://svn.osgeo.org/osgeo/livedvd/gisvm/trunk/bin/bootstrap.sh host$ chmod a+x bootstrap.sh host$ sudo ./bootstrap.sh This will install subversion, and the install scripts, and create a link to them from your home directory.
 * Bootstrap the host operating system. If you use the system to build more than once, then this must be done only for the first build

Update https://svn.osgeo.org/osgeo/livedvd/gisvm/trunk/VERSION.txt with the current version number.
 * Set the Version Number and Changes

Update https://svn.osgeo.org/osgeo/livedvd/gisvm/trunk/CHANGES.txt with changes since the last release. This list can be a summary of the revision log between releases Commit the changes to svn right before a release build.

host$ cd ~/gisvm/bin host$ svn up host$ sudo ./build_chroot.sh 2>&1 | tee /var/log/osgeolive/chroot-build.log
 * Execute the build script:

host$ cd ~/livecdtmp host$ tar czf version-log.tar.gz -C /var/log osgeolive
 * Compress the logs:


 * After the completion of the above script the new iso file is located in ~/livecdtmp along with the build logs. In case you wish to rerun the build process, do not remove or move the xubuntu official iso located in this folder to skip downloading it again.


 * It is required to reboot your host machine after build is completed

scp ~/livecdtmp/osgeolive-mini-6.0.iso user@server.org:destination/path/ scp ~/livecdtmp/osgeolive-mini-6.0-log.tar.gz user@server.org:destination/path/
 * Once the ISO is complete copy it out to a server (a local server is fastest)


 * And/OR Wget or scp the file to the upload.osgeo.org server (Note wget is much faster if you have a good webserver to host from)

How to do development / debugging with the current build method
We have created a debug build process so that projects can now easily create their own iso, including parts of the OSGeoLive (eg only one project) in order to test if the installer scripts work well under this new build method. Here are the steps to debug/test your application:

One time steps
You will need to create a pure Xubuntu Virtual Machine setup:

osgeolive$ cd /tmp osgeolive$ wget https://svn.osgeo.org/osgeo/livedvd/gisvm/trunk/bin/bootstrap.sh osgeolive$ chmod a+x bootstrap.sh osgeolive$ sudo ./bootstrap.sh
 * Download xubuntu-12.04-desktop-i386.iso from xubuntu web site.
 * Download and install VirtualBox.
 * Create a fresh VM installation of Xubuntu. You will need to create a virtual disk drive with at least 25 GB of space and allocate 768MB of RAM to the VM. During installation set the username to "user" and hostname to "osgeolive". DO NOT install system updates during xubuntu installation or after the installation is done. At this momment we work with the default kernel included in xubuntu.
 * After the VM is done, login as "user" and open a terminal.
 * Bootstrap the VM:

This will install subversion, and the install scripts, and create a link to them from your home directory.

Steps to create the build (repeat as much as needed)

 * Make changes to your project's installation script and commit to svn.

osgeolive$ cd ~/gisvm osgeolive$ svn up
 * Update the subversion code:

osgeolive$ cd ~/gisvm/bin osgeolive$ vim inchroot_debug.sh
 * Open file inchroot_debug.sh with an editor and comment out all scripts you do not need for your test.


 * Always leave un-commented the following scripts: setup.sh, install_services.sh, install_mysql.sh, install_java.sh, install_apache2.sh, install_tomcat6.sh, install_desktop.sh and setdown.sh. We have already commented out all project installation scripts (except the needed ones) for you.

osgeolive$ cd ~/gisvm/bin osgeolive$ sudo ./build_chroot_debug.sh 2>&1 | tee /var/log/osgeolive/chroot-build.log
 * Save your changes and execute the build:


 * After a while the iso will be created in ~livecdtmp/


 * Do not delete the file ~livecdtmp/xubuntu-12.04-desktop-i386.iso as it will be needed for next build (saves time not to download again)


 * Logs are created at /var/log/osgeolive/chroot-build.log


 * Copy the iso and test

= Build the Live DVD VM image =

Create the VM
The OSGeoLive Virtual Machine creation process is now exactly similar to a plain Xubuntu VM installation. Use the mini iso file that was created from the previous chapter. Instructions can be found Live_GIS_Virtual_Machine

Package the VM
From within the VM, fill empty space with zeros in order to be able to shrink the virtual disk files:

osgeolive$ sudo ~/gisvm/bin/zerofill.sh

Shrink the virtual machine:

host$ VBoxManage modifyhd osgeolive-vm-6.0/osgeolive.vdi --compact

Zip the image up:

host$ 7z a -mx=9 osgeolive-vm-6.0.7z osgeolive-vm-6.0/

Create the md5sum checksums, so which can be used to confirm that the images have been downloaded correctly: host$ md5sum *.7z*

= Upload the Release =

Upload to sourceforge
As of 6.0 the official releases are hosted on sourceforge. To upload you need a sourceforge account and permissions to the osgeo-live project upload.

rsync -e ssh osgeo-live-5.5.iso username,osgeo-live@frs.sourceforge.net:/home/pfs/project/o/os/osgeo-live/5.5/

Upload to the OSGeo Server
host$ scp -pr osgeolive-gisvm-2.0-alpha5 username@upload.osgeo.org:/osgeo/download/livedvd/

Update the index.html file at: https://svn.osgeo.org/osgeo/livedvd/gisvm/trunk/download/index.html

Check the result at: http://download.osgeo.org/livedvd

Creating a torrent file
Ibiblio has offered torrent hosting, this section needs to include who to contact/how to setup Several tools exist for creating torrents. Below are the key settings you need.

Deluge with the torrent creator plugin has been tested. http://tracker.openbittorrent.com/announce udp://tracker.openbittorrent.com:80/announce OR http://tracker.publicbt.com:80/announce udp://tracker.publicbt.com:80/announce
 * Make sure you have a copy of the file you want to create a torrent for. Mounted remote drives may work.
 * Web Seed - URL to a web server that hosts the file, adds speed to the torrents especially at the start. (Most clients implement this now)
 * Tracker - There are 2 open and free trackers that have been tested, use one or the other as most clients do not handle multiple trackers yet.
 * Upload the .torrent file of your iso file for others to grab
 * Start the torrent on your machine or dedicated seeder, so that others have somewhere to start.
 * There is a possibility of seeding from osgeo machines but a Quality of Service (QoS) system would need to be in place to ensure it does not impact other services.

= SVN branches and tags =

Naming

 * main development happens in "trunk" (aka HEAD)
 * a branch is split off before release time. Bug fixes (only) happen in it and updates like version 2.1 are tagged from it.
 * its name might be like "arramagong_2"


 * a tag is a snapshot of the svn at some point in time, aka a release name. It does not make sense to checkin fixes to one. They should ideally be set as read-only after creation to prevent this.
 * its name might be like "release_20090927_arramagong_2_0"

Creating
cd livedvd/gisvm/ svn copy trunk branches/arramagong_2 svn commit branches/arramagong_2 -m "Splitting off branch for 2.x" cd branches/arramagong_2/bin/ sed -e 's+gisvm/trunk+gisvm/branches/arramagong_2+g' *.sh | less  # check sed -i -e 's+gisvm/trunk+gisvm/branches/arramagong_2+g' *.sh      # execute cd - svn copy branches/arramagong_2 tags/release_20090927_arramagong_2_0_3 svn commit tags/release_20090927_arramagong_2_0_3 -m "tag release 2.0.3"
 * 1) something like this, maybe need a for loop or xargs:

Merging
To merge a change from trunk into a release branch use "svn merge", as follows: (in this example r2131 from trunk)

svn up branches/arramagong_2/ cd branches/arramagong_2/ svn merge -c 2131 https://svn.osgeo.org/osgeo/livedvd/gisvm/trunk svn diff svn commit -m "bugfix: bikeshed should be orange! (merge from trunk r2131)"

If you do this a lot you might make a little shell script. Here's one called svn_merge_livefromtrunk.sh: svn merge -c $1 https://svn.osgeo.org/osgeo/livedvd/gisvm/trunk
 * 1) !/bin/sh
 * 2) Usage: svn_merge_livefromtrunk