FAI How to build a i386 and x86 64 compatible FAI server on Debian Etch x86 64: Difference between revisions
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These procedures had been validated on Debian Etch with FAI 3.1.8, | |||
and have been revalidated (and updated) for Lenny and FAI 3.2.16. | |||
I was installing an installserver for my company and looking for a way to build and i386 NFSROOT on a amd64 Etch and then build arch specific FAI mirrors and CD images. | I was installing an installserver for my company and looking for a | ||
Here's how I did it. | way to build and i386 NFSROOT on a amd64 Etch and then build arch | ||
specific FAI mirrors and CD images. Here's how I did it. | |||
Important note: this only works if your server runs a amd64 kernel and also only works with amd64 and i386. The reason is simply, because debootstrap installs the packages and then runs the postinst scripts, which in turn (sometimes) run arch-specific binaries, so this only works on amd64, because its possible to execute i386 binaries on amd64. If you want to serve other architecture combinations, you need to create the nfsroot on the target architecture and then copy it to your nfsserver, which can run any OS on any cpu-archtiture :-) | Important note: this only works if your server runs a amd64 kernel | ||
and also only works with amd64 and i386. The reason is simply, | |||
because debootstrap installs the packages and then runs the postinst | |||
scripts, which in turn (sometimes) run arch-specific binaries, so | |||
this only works on amd64, because its possible to execute i386 | |||
binaries on amd64. If you want to serve other architecture | |||
combinations, you need to create the nfsroot on the target | |||
architecture and then copy it to your nfsserver, which can run any | |||
OS on any cpu-archtiture :-) | |||
= FAI Configuration tuning = | |||
All of the processes described below relies on tuning the FAI | |||
configuration space. Normally, FAI configuration can be found under | |||
All the | an unique directory <code>/etc/fai</code>. To make FAI work with | ||
Normally, FAI configuration can be found under an unique directory <code>/etc/fai</code>. | multi architecture, you have to duplicate the configuration space | ||
To make FAI work with multi architecture, you have to duplicate the configuration space for every architecture. | for every architecture. Here is an exemple of such an FAI setup : | ||
Here is an exemple of such | |||
<pre> | <pre> | ||
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</pre> | </pre> | ||
To be precise, the directories don't have to be | To be precise, the directories don't have to be entirely duplicated, | ||
only the <code>make-fai-nfsroot.conf</code> file must. Links can | |||
be used for the other files or directories under the | |||
<code>/etc/fai</code> tree, although <code>apt/sources.list</code> | |||
must be a hard link or copy; a soft link will not work. | |||
= Cross-Architecture NFSROOT = | |||
==Create Arch Specific FAI Configuration Direcories== | |||
These are the directories that will be used for FAI in this | These are the directories that will be used for FAI in this | ||
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</pre> | </pre> | ||
==Build Per-Arch Apt Configs== | |||
We need to tell apt-get and frineds what's goin on, so we make a | We need to tell apt-get and frineds what's goin on, so we make a | ||
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</pre> | </pre> | ||
==Make Per-Arch make-fai-nfsroot.conf== | |||
Add <code>--arch i386</code> or <code>--arch amd64</code> to | Add <code>--arch i386</code> or <code>--arch amd64</code> to | ||
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<code>/etc/fai-amd64/apt_arch.conf</code>, as appropriate. | <code>/etc/fai-amd64/apt_arch.conf</code>, as appropriate. | ||
==Build The Per-Arch NFSROOT== | |||
Run: | Run: | ||
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potentially less thorough, but should work. | potentially less thorough, but should work. | ||
==Configure Network Installation== | |||
Run (something like) one of these, depending on what kind of host you are imaging: | Run (something like) one of these, depending on what kind of host you are imaging: | ||
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* fai-chboot -k "initrd=$(ls -rt /srv/tftp/fai/initrd.img*amd64* | tail -1 | sed 's;.*/;;') root=/dev/nfs nfsroot=$(host $(uname -n) | grep 'has address' | awk '{ print $4 }' | head -1):/srv/fai/nfsroot boot=live ip=dhcp FAI_FLAGS=verbose,sshd,createvt FAI_ACTION=install nfsroot=/srv/fai/nfsroot-amd64" $(ls -rt /srv/tftp/fai/vmlinuz*amd64* | tail -1 | sed 's;.*/;;') HOST | * fai-chboot -k "initrd=$(ls -rt /srv/tftp/fai/initrd.img*amd64* | tail -1 | sed 's;.*/;;') root=/dev/nfs nfsroot=$(host $(uname -n) | grep 'has address' | awk '{ print $4 }' | head -1):/srv/fai/nfsroot boot=live ip=dhcp FAI_FLAGS=verbose,sshd,createvt FAI_ACTION=install nfsroot=/srv/fai/nfsroot-amd64" $(ls -rt /srv/tftp/fai/vmlinuz*amd64* | tail -1 | sed 's;.*/;;') HOST | ||
= Per-Architecture FAI Mirrors = | |||
Here's how to make fai partial Debian mirrors for both architectures. | Here's how to make fai partial Debian mirrors for both architectures. |
Revision as of 20:29, 14 February 2009
These procedures had been validated on Debian Etch with FAI 3.1.8, and have been revalidated (and updated) for Lenny and FAI 3.2.16.
I was installing an installserver for my company and looking for a way to build and i386 NFSROOT on a amd64 Etch and then build arch specific FAI mirrors and CD images. Here's how I did it.
Important note: this only works if your server runs a amd64 kernel and also only works with amd64 and i386. The reason is simply, because debootstrap installs the packages and then runs the postinst scripts, which in turn (sometimes) run arch-specific binaries, so this only works on amd64, because its possible to execute i386 binaries on amd64. If you want to serve other architecture combinations, you need to create the nfsroot on the target architecture and then copy it to your nfsserver, which can run any OS on any cpu-archtiture :-)
FAI Configuration tuning
All of the processes described below relies on tuning the FAI
configuration space. Normally, FAI configuration can be found under
an unique directory /etc/fai
. To make FAI work with
multi architecture, you have to duplicate the configuration space
for every architecture. Here is an exemple of such an FAI setup :
/etc/fai-i386 /etc/fai-amd64
To be precise, the directories don't have to be entirely duplicated,
only the make-fai-nfsroot.conf
file must. Links can
be used for the other files or directories under the
/etc/fai
tree, although apt/sources.list
must be a hard link or copy; a soft link will not work.
Cross-Architecture NFSROOT
Create Arch Specific FAI Configuration Direcories
These are the directories that will be used for FAI in this setup. /etc/fai is still there, since several of the files do not change, but shouldn't actually be used directly.
for dir in /etc/fai-i386 /etc/fai-amd64 do mkdir $dir cd $dir ln -s /etc/fai/fai.conf ln -s /etc/fai/NFSROOT mkdir $dir/apt # A hard link will work here too, but not a soft link cp /etc/fai/apt/sources.list apt/ ln -s /etc/fai/menu.lst cp /etc/fai/make-fai-nfsroot.conf . done
Build Per-Arch Apt Configs
We need to tell apt-get and frineds what's goin on, so we make a
apt_arch.conf
file inside /etc/fai-i386
and /etc/fai-amd64
.
Simply add thoses lines to /etc/fai-i386/apt_arch.conf
( for /etc/fai-amd64/apt_arch.conf
, replace i386 by amd64)
APT { Architecture "i386"; }
Make Per-Arch make-fai-nfsroot.conf
Add --arch i386
or --arch amd64
to
FAI_DEBOOTSTRAP_OPTS
.
Set NFSROOT
to /srv/fai/nfsroot-i386
or
/srv/fai/nfsroot-amd64
, as appropriate.
Set APT_CONFIG
to
/etc/fai-i386/apt_arch.conf
or
/etc/fai-amd64/apt_arch.conf
, as appropriate.
Build The Per-Arch NFSROOT
Run:
- fai-setup -C /etc/fai-i386 -v
- fai-setup -C /etc/fai-amd64 -v
You can also run make-fai-nfsroot instead of fai-setup; it's potentially less thorough, but should work.
Configure Network Installation
Run (something like) one of these, depending on what kind of host you are imaging:
- fai-chboot -k "initrd=$(ls -rt /srv/tftp/fai/initrd.img*i386* | tail -1 | sed 's;.*/;;') root=/dev/nfs nfsroot=$(host $(uname -n) | grep 'has address' | awk '{ print $4 }' | head -1):/srv/fai/nfsroot boot=live ip=dhcp FAI_FLAGS=verbose,sshd,createvt FAI_ACTION=install nfsroot=/srv/fai/nfsroot-i386" $(ls -rt /srv/tftp/fai/vmlinuz*i386* | tail -1 | sed 's;.*/;;') HOST
- fai-chboot -k "initrd=$(ls -rt /srv/tftp/fai/initrd.img*amd64* | tail -1 | sed 's;.*/;;') root=/dev/nfs nfsroot=$(host $(uname -n) | grep 'has address' | awk '{ print $4 }' | head -1):/srv/fai/nfsroot boot=live ip=dhcp FAI_FLAGS=verbose,sshd,createvt FAI_ACTION=install nfsroot=/srv/fai/nfsroot-amd64" $(ls -rt /srv/tftp/fai/vmlinuz*amd64* | tail -1 | sed 's;.*/;;') HOST
Per-Architecture FAI Mirrors
Here's how to make fai partial Debian mirrors for both architectures.
This relies on the NFSROOT changes described above.
for arch in i386 amd64 ; do export FAI_ETC_DIR=/etc/fai-$arch export APT_CONFIG=/etc/fai-$arch/apt_arch.conf apt-get update fai-mirror -v /srv/fai/mirror-$arch export -n APT_CONFIG apt-get update done