Bundling Debian 6 image for OpenStack

The following method was tested using Debian 6.0.1 on Diablo version of OpenStack. The OpenStack cloud was setup using the procedure given in the following link.


Create a raw image which emulates the Hard Drive.

kvm-img create -f qcow2 debian.img 5G

Start the Virtual Machine booting from the CD using the following command.

kvm -m 256 -cdrom debian-6.0.1a-amd64-CD-1.iso -drive file=debian.img,if=virtio,index=0 -boot d -net nic -net user -nographic -vnc :1

Connect to the Virtual Machine through VNC (use display number :1).For Example, where is the IP address of the host machine.

vncviewer :1

Select SSH server, Curl and other packages needed, during installation. Once the installation is over shutdown the Virtual Machine. Start the Virtual Machine to boot from the Hard Drive using the following command.

kvm -m 256 -drive file=debian.img,if=virtio,index=0,boot=on -boot c -net nic -net user -nographic -vnc :1

Do the necessary changes needed for the image.For key injection add the following lines before ‘exit 0’ in the file /etc/rc.local.

mkdir -p /root/.ssh
echo >> /root/.ssh/authorized_keys
curl -m 10 -s | grep 'ssh-rsa' >> /root/.ssh/authorized_keys
echo "************************"
cat /root/.ssh/authorized_keys
echo "************************"

Also remove the network persistence rules from /etc/udev/rules.d as their presence will result in the network interface in the instance coming up as an interface other than eth0.

rm -rf /etc/udev/rules.d/70-persistent-net.rules

Shutdown the Virtual Machine. Upload the image to OpenStack using the following command

cloud-publish-image amd64 debian.img debianbucket

The following output shows that the image has been successfully uploaded.

ami-00000001 debianbucket/debian.img.manifest.xml

Start the instance with the image that was uploaded.

euca-run-instances ami-00000001 -k mykey -t m1.tiny

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