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# Eric Thibodeau
# Initial 01 Jul 2008
# Updated 17 Aug 2008
# Google Summer of Code 2008: Gentoo Clustering LiveCD
## The build environment ##
If you want to be able to create liveCDs with as little hassle as possible you will need the following:
- The loop module, it's required for the licecd-stage2 creation of the kernel
modprobe loop
- dev-util/subversion
- dev-util/git
- dev-util/catalyst (am using CVS version which is close to 2.0.6)
** for some reason, catalyst won't create the skeleton dirs so here is the sequence to get you started
emerge dev-util/catalyst
mkdir -p /var/tmp/catalyst/ /var/tmp/catalyst/snapshots /var/tmp/catalyst/tmp/default
# edit /etc/catalyst/catalystrc and add relevant options such as:
export MAKEOPTS="-j6"
export FEATURES="parallel-fetch"
# You haev to set this here if you want to enable the pbs (torque) use flag for the clustering liveCD
# the server's name is required at compile time (unfortunately) and this is the only way of overriding
# the build host as becoming the one defined as the server.
# This also FORCES the user to use this name as the master node...yerk, I know...
export PBS_SERVER_NAME="master.gentoo.local"
# you can set CFLAGS here but it's not recommended
# NOTE, don't try to use distcc, it's broken, the distcc user is not being created in the catalyst build
- http://sources.gentoo.org/viewcvs.py/releng/ pulled in as /var/svnroot/releng
mkdir -p /var/svnroot/
cd /var/svnroot/
svn co svn://anonsvn.gentoo.org/releng
- A recent snapshot (last one used was portage-20080806.tar.bz2), you have to modify the catalyst .spec files accordingly
So get a snapshot and place it in /var/tmp/catalyst/snapshots (we are doing something evil here...):
wget ftp://mirrors.tera-byte.com/pub/gentoo/snapshots/portage-20080806.tar.bz2 -O /var/tmp/catalyst/snapshots/portage-20080806.tar.bz2
- A recent stage3, this eliminates many problems related to circular dependancies and collisions. We used drobbin's packages from funtoo.org
mkdir -p /var/tmp/catalyst/builds/drobbins/
cd /var/tmp/catalyst/builds/drobbins/
wget http://www.funtoo.org/linux/amd64/funtoo-amd64-2008.06.27/stage3-amd64-2008.06.27.tar.bz2
- This git checked out into /var/git/:
mkdir -p /var/git/
cd /var/git/
git clone git://git.overlays.gentoo.org/proj/clustering-livecd.git
- The abovementionned snapshot suffers from the following bugs (whch have been fixed if you take something more recent):
** This bug isn't going to be resolved any time soon:
http://bugs.gentoo.org/show_bug.cgi?id=142637 "missing dependency in eutils.eclass"
So you have to edit the openldap ebuild (currently the setup pulls in 2.4.10) and add DEPEND="sys-apps/shadow":
vi /var/tmp/catalyst/snapshot_cache/20080629/portage/net-nds/openldap/openldap-2.4.10.ebuild
ebuild /var/tmp/catalyst/snapshot_cache/20080629/portage/net-nds/openldap/openldap-2.4.10.ebuild digest
- We also need (some) overlays:
# NOTE!!! I set up my layman to put all files into /usr/local/portage/ (and not de thefault of /usr/portage/local)
# If you don't like this, setup the .spec files accrodingly
layman -a sunrise
layman -a science
## Before you can build the LiveCD/DVD, you have to build the nfsroot which is to be included in the iso...so skip to the NFSroot-HOWTO and come back here when you're done ;)
## Actually building the CD ##
** NOTE: if you have lots of RAM: **
You can build everything in RAM with no problems as long as tmpfs has at least 6Gigs (for the LiveCD stages)
alias mnttmp='mount -t tmpfs -o size=6G,noatime catalystbuild /var/tmp/catalyst/tmp/default'
**
# Barring the bugs 229103 and 206753, the following sequence should get you down to a LiveCD (haha...HAHA...HAHAHAHAHA)
# These sequences are the ones I put in a script to whipe the slate clean and rebuild the environment
# Well, almost, I don't delete the packages dir except for some packages for which I often want to force a rebuild.
# Stages 1 to 3
cd clustering-livecd/catalyst/releases/2008.0/specs/amd64/
for I in stage*
do
mnttmp
catalyst -f $I
# we empty out stuff we don't need anymore ;)
umount /var/tmp/catalyst/tmp/default
done
# Minimal CD:
umount /var/git/clustering-livecd/catalyst/livecd/2008.0/overlay/tftproot/nfsroot/x86_64/
umount /var/tmp/catalyst/tmp/default
find /var/tmp/catalyst/packages/ -regextype posix-extended -regex '.*(beowulf|aufs|ldap-auth).*' -exec rm -f {} \;
mount -t tmpfs -o size=7G,noatime catalystbuild /var/tmp/catalyst/tmp/default
schedtool -B -n -4 -e catalyst -f /var/git/clustering-livecd/catalyst/nfsroot/2008.0/specs/amd64/nfsroot_stage4.spec
schedtool -B -n -4 -e catalyst -f /var/git/clustering-livecd/catalyst/livecd/2008.0/specs/amd64/livecd-stage1-minimal.spec
mount -o bind /var/tmp/catalyst/tmp/default/stage4-amd64-nfsroot-20080806/ /var/git/clustering-livecd/catalyst/livecd/2008.0/overlay/tftproot/nfsroot/x86_64/
find /var/tmp/catalyst/packages/ -regextype posix-extended -regex '.*(beowulf|aufs|ldap-auth).*' -exec rm -f {} \;
schedtool -B -n -4 -e catalyst -f /var/git/clustering-livecd/catalyst/livecd/2008.0/specs/amd64/livecd-stage2-minimal.spec
# "Full" CD:
Same as above but replace livecd-stage?-minimal.spec with livecd-stage?.spec
# At the end, an iso image should be waiting for you as /tmp/livecd-amd64-installer-2008.0.iso ;)
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