Cloud image generation short cuts for noobs

Cloud image generation short cuts for noobs

Introduction

References

• http://www.linuxplanet.com/linuxplanet/tutorials/6546/1
• http://alestic.com/2010/01/ec2-ebs-boot-ubuntu
• http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/index.html?creating-loopback-s3-linux.html
• http://docs.amazonwebservices.com/AWSEC2/2011-05-15/CommandLineReference/
• http://cssoss.wordpress.com/2010/05/10/eucalyptus-beginner%E2%80%99s-guide-%E2%80%93-uec-edition-chapter-4-%E2%80%93-image%C2%A0management/
• http://rwmj.wordpress.com/2011/05/19/rhel-6-1-is-out-new-virtualization-guide-covers-libguestfs/
• https://help.ubuntu.com/community/UEC/CDInstall
• https://help.ubuntu.com/community/UEC/Images
• http://cloud.ubuntu.com/docs/uec-book/
• http://cloud.ubuntu.com/docs/
• http://home.comcast.net/~fbui/bandwidth.html
• http://www.osc.edu/~troy/lperfex/

Creating an image

1. Get the OS
2. create loop back image
3. configure image.
4. bundle image.
5. Install the bundle on UEC.
6. Test the Ubuntu i386 bundle on AWS.
7. Test the bundle on AWS

Creating a Fedora image

1. dd if=/dev/zero of=fedora.fs bs=1M count=2048
2. mke2fs -F -j fedora.fs
3. mkdir /mnt/fedora
4. mount -o loop fedora.fs /mnt/fedora
5. mkdir /mnt/fedora/dev
6. /sbin/MAKEDEV -d /mnt/fedora/dev -x console
7. /sbin/MAKEDEV -d /mnt/fedora/dev -x null
8. /sbin/MAKEDEV -d /mnt/fedora/dev -x zero
9. mkdir /mnt/fedora/etc
10. vi /mnt/fedora/etc/fstab
    • See fstab content below.
11. cat /etc/yum.conf /etc/yum.repos.d/fedora.repo >> /mnt/fedora/etc/yum.conf
12. vi /mnt/fedora/etc/yum.conf
    • See yum.conf content below.
13. mkdir /mnt/fedora/proc
14. mount -t proc none /mnt/fedora/proc
15. yum -c /mnt/fedora/etc/yum.conf --installroot=/mnt/fedora -y groupinstall Base
16. vi /mnt/fedora/etc/sysconfig/network-scripts/ifcfg-eth0
    • See blow
17. echo "NETWORKING=yes" > /mnt/fedora/etc/sysconfig/network
18. Update /mnt/fedora/etc/fstab
    • See below
19. chroot /mnt/ec2-fs /bin/sh
20. chkconfig --level 345 my-service on
21. exit
22. umount /mnt/fedora/proc/
23. umount -d /mnt/fedora

fstab

/dev/sda1  /         ext3    defaults        1 1
none       /dev/pts  devpts  gid=5,mode=620  0 0
none       /dev/shm  tmpfs   defaults        0 0
none       /proc     proc    defaults        0 0
none       /sys      sysfs   defaults        0 0

# This is for c1.small and m1.medium
#  For others please see:
http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/index.html?instance-storage-concepts.html
/dev/sda2  /mnt      ext3    defaults        0 0
/dev/sda3  swap      swap    defaults        0 0

yum.conf

[main]
cachedir=/mnt/fedora/var/cache/yum/$basearch/$releasever
keepcache=0
debuglevel=2
logfile=/var/log/yum.log
exactarch=1
obsoletes=1
plugins=1
installonly_limit=3
color=never
exclude=*-debuginfo
gpgcheck=0
reposdir=/dev/null

#  This is the default, if you make this bigger yum won't see if the metadata # is newer on the remote and so you'll "gain" the bandwidth of not having to # download the new metadata and "pay" for it by yum not having correct # information.
#  It is esp. important, to have correct metadata, for distributions like # Fedora which don't keep old packages around. If you don't like this checking # interupting your command line usage, it's much better to have something # manually check the metadata once an hour (yum-updatesd will do this).
# metadata_expire=90m

# PUT YOUR REPOS HERE OR IN separate files named file.repo # in /etc/yum.repos.d

[fedora]
name=Fedora $releasever - $basearch
failovermethod=priority
#mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=fedora-$releasever&arch=$basearch
mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=fedora-14&arch=$basearch
enabled=1
metadata_expire=7d
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-$basearch

[fedora-debuginfo]
name=Fedora $releasever - $basearch - Debug failovermethod=priority #baseurl=http://download.fedoraproject.org/pub/fedora/linux/releases/$releasever/Everything/$basearch/debug/
mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=fedora-debug-$releasever&arch=$basearch
enabled=0
metadata_expire=7d
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-$basearch

[fedora-source]
name=Fedora $releasever - Source
failovermethod=priority
[main]
cachedir=/mnt/fedora/var/cache/yum/$basearch/$releasever
keepcache=0
debuglevel=2
logfile=/var/log/yum.log
exactarch=1
obsoletes=1
plugins=1
installonly_limit=3
color=never
exclude=*-debuginfo
gpgcheck=0
reposdir=/dev/null

#  This is the default, if you make this bigger yum won't see if the metadata # is newer on the remote and so you'll "gain" the bandwidth of not having to # download the new metadata and "pay" for it by yum not having correct # information.
#  It is esp. important, to have correct metadata, for distributions like # Fedora which don't keep old packages around. If you don't like this checking # interupting your command line usage, it's much better to have something # manually check the metadata once an hour (yum-updatesd will do this).
# metadata_expire=90m

# PUT YOUR REPOS HERE OR IN separate files named file.repo # in /etc/yum.repos.d

[fedora]
name=Fedora $releasever - $basearch
failovermethod=priority
#mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=fedora-$releasever&arch=$basearch
mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=fedora-14&arch=$basearch
enabled=1
metadata_expire=7d
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-$basearch

[fedora-debuginfo]
name=Fedora $releasever - $basearch - Debug failovermethod=priority #baseurl=http://download.fedoraproject.org/pub/fedora/linux/releases/$releasever/Everything/$basearch/debug/
mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=fedora-debug-$releasever&arch=$basearch
enabled=0
metadata_expire=7d
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-$basearch

[fedora-source]
name=Fedora $releasever - Source
failovermethod=priority
#baseurl=http://download.fedoraproject.org/pub/fedora/linux/releases/$releasever/Everything/source/SRPMS/
mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=fedora-source-$releasever&arch=$basearch
enabled=0
metadata_expire=7d
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-$basearch
#baseurl=http://download.fedoraproject.org/pub/fedora/linux/releases/$releasever/Everything/source/SRPMS/
mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=fedora-source-$releasever&arch=$basearch
enabled=0
metadata_expire=7d
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-$basearch

ifcfg-eth0

{pre} DEVICE=eth0 BOOTPROTO=dhcp ONBOOT=yes TYPE=Ethernet USERCTL=yes PEERDNS=yes IPV6INIT=no {/pre}