X-Git-Url: http://git.grml.org/?p=grml-live.git;a=blobdiff_plain;f=docs%2Fgrml-live.txt;h=69b874f5019bf0d1993a4e1bf367eb8e93e76795;hp=bc5e67ff0aa5bf41c2da1393b6be6148ba208984;hb=357aeccc20289a8b31a4d50ac718b9acc4e65c22;hpb=e185d67c5e91b61274aa84575dd4d4243005ff95 diff --git a/docs/grml-live.txt b/docs/grml-live.txt index bc5e67f..69b874f 100644 --- a/docs/grml-live.txt +++ b/docs/grml-live.txt @@ -3,42 +3,80 @@ grml-live(8) Name ---- -grml-live - generate a grml (based) live-cd +grml-live - build process script for generating a (grml based) Linux Live-ISO Synopsis -------- -grml-live [ todo...] +grml-live [-c ] [-t ] [-F] [-h|--help] ******************************************************************************* -Important! grml-live is under heavy construction and everything but ready yet. +Important! grml-live is under heavy construction, your feedback is highly +appreciated. This document is growing as requested. If you have questions which +aren't answered by this document yet please let me (mika@grml.org) know! ******************************************************************************* -Introduction ------------- +Description +----------- -grml-live provides the build system for creating a grml (based) live-cd. The +grml-live provides the build system for creating (a grml based) live-cd. The build system is based on link:http://www.informatik.uni-koeln.de/fai/[FAI] -(Fully Automatic Installation). If you are familiar with FAI already it is very -easy to get a live-cd, if you don't know FAI yet don't despair: it's still very -easy. :) +(Fully Automatic Installation). FAI uses a class based system. This gives you the flexibility to choose the -packages you would like to include on your very own live-cd without having to -deal with all the details in the core of the system. +packages you would like to include on your very own Linux live-cd without having +to deal with all the details of a build process. +CAUTION: grml-live does not use /etc/fai for configuration but instead provides +and uses /etc/grml/fai. This ensures that it does not clash with default FAI +configuration and packages, so you can use grml-live and FAI completely +independent! + +[NOTE] Please notice that you should have a fast network connection as all the Debian packages will be installed via network. If you want to use a local mirror -checkout -link:http://www.informatik.uni-koeln.de/fai/download/mkdebmirror[mkdebmirror] -and debmirror. +(strongly recommended!) checkout +mkdebmirror (see /usr/share/doc/grml-live/examples/mkdebmirror) +debmirro(1) and reprepro(1) (check out +/usr/share/doc/grml-live/examples/reprepro/ for a sample configuration). +To avoid downloading of the base system check out FAI's +NFSROOT (check docs for ../fai/nfsroot/live/filesystem.dir/var/tmp/base.tgz). + +Options +------- + + -c **CLASSES**:: + +Specify the CLASSES to be used for building the ISO via fai. By default only +the classes GRML and I386 are assumed, resulting in a small base system (being +about ~150MB ISO size). + + -t **TARGET_DIRECTORY**:: + +Output directory of the build process of FAI - being the chroot +used for building the ISO. + + -F:: + +Force execution and do not display summary of configuration details. + + -h|--help:: + +Display short usage information and exit. + + additional_arguments_for_fai:: + +Any additional argument(s) to grml-live will be given to the FAI commandline +(being basically "fai dirinstall ...). This might become a temporary solution +(due to security reasons), if you need an option please let us know so we can +implement it. How to get your own live-cd - the easy, fast and simple way ----------------------------------------------------------- To get a small, Debian-stable and grml based live-cd: - # TARGET="/grml/chroot/grml_uncompressed" - # CDDIR="/grml/chroot/grml_cd" + # TARGET="/grml/grml_uncompressed" + # CDDIR="/grml/grml_cd" # grml-live -c GRML -t $TARGET # mksquashfs $TARGET/* $CDDIR/live/grml.squashfs -noappend # cd $CDDIR @@ -46,8 +84,39 @@ To get a small, Debian-stable and grml based live-cd: -boot-info-table -c boot/isolinux/boot.cat \ -b boot/isolinux/isolinux.bin -o /grml/grml.iso . -(TODO: provide the contenct of /grml/chroot/grml_cd through the package -grml-live, in the meanwhil get the content from a current grml-ISO) +(TODO: provide the content of /grml/chroot/grml_cd through the package +grml-live, in the meanwhile get the content from a current grml-ISO) + +The class concept +----------------- + +grml-live uses FAI and its class based concept for adjusting configuration +according to your needs. This gives you flexibility and strength without losing +the simplicity in the build process. + +The main and base class provided by grml-live is named GRML. It's strongly +recommended to **always** use the class GRML when building an ISO using +grml-live as well as the architecture dependend class (being 'I386' for x86_32 +currently only). The following files and directories are relevant for class GRML +by default: + + /etc/grml/fai/config/scripts/GRML/ + /etc/grml/fai/config/debconf/GRML + /etc/grml/fai/config/class/GRML.var + /etc/grml/fai/config/hooks/instsoft.GRML + /etc/grml/fai/config/package_config/GRML + +Take a look at the next section for information about the concept of those +files/directories. + +If you want to use your own configuration, extend an existing configuration +and/or add additional packages to your ISO just invent a new class. For example +if you want to use your own class named "FOOBAR" just extend CLASSES="GRML" inside +/etc/grml/grml-live.conf to CLASSES="GRML,FOOBAR" or invoke grml-live using +the classes option: "grml-live -c GRML,FOOBAR ...". + +More details regarding the class concept can be found in the documentation of +FAI (available at /usr/share/doc/fai-doc/). Files ----- @@ -127,15 +196,44 @@ Scripts for customising the ISO within build process. This directory provides the files used for building the initramfs/initrd via live-initramfs(8). -TODO ----- +Requirements for the build system +--------------------------------- + +* any Debian based system should be sufficient (if not please send a bug +report), for example a grml2hd harddisk installation ships all you need + +* enough free disk space, at least 700MB are required for a minimal grml-live +run (~400MB for the chroot [$CHROOT_TARGET], ~150MB for the build target +[$BUILD_TARGET] and ~150MB for the resulting ISO [$ISO_TARGET]). + +* fast network access for retreiving the Debian packages used for creating the +chroot (check out "local mirror" and "NFSROOT" to workaround this problem as far +as possiblbe) + +Known TODOs +----------- + +* extend the grml-live wrapper script so it runs all the necessary command in a +single run (boot/isolinux, mksquashfs and mkisofs stuff is missing currently) + +* really support signed apt repositories + +* explain (and provide configuration for) the use of NFSROOT + +* support setting stuff like ISO name, version,... (especially for stuff inside +x86_files/boot/isolinux) + +* identify all packages that are arch specific + +* support different flavours and architectures of Debian (currently it defaults +to Debian/stable x86_32) -* provide a wrapper script which runs all the necessary command in a single run (/usr/sbin/grml-live and -/etc/grml/grml-live.conf are work in progress) +* use hooks of FAI in grml-live script? -* provide buildprocess for boot/isolinux stuff +* the GRML class(es) should send output as used inside FAI as well (so it's not +as verbose unless you specify it) -* explain and provide configuration for use of NFSROOT +* provide possibility for cleanup of all created build directories Bugs ----