cli/components/engine/docs/sources/installation/rackspace.rst

title

Rackspace Cloud Installation

description

Installing Docker on Ubuntu proviced by Rackspace

keywords

Rackspace Cloud, installation, docker, linux, ubuntu

Rackspace Cloud

Installing Docker on Ubuntu provided by Rackspace is pretty straightforward, and you should mostly be able to follow the ubuntu_linux installation guide.

However, there is one caveat:

If you are using any linux not already shipping with the 3.8 kernel you will need to install it. And this is a little more difficult on Rackspace.

Rackspace boots their servers using grub's menu.lst and does not like non 'virtual' packages (e.g. xen compatible) kernels there, although they do work. This makes update-grub to not have the expected result, and you need to set the kernel manually.

Do not attempt this on a production machine!

# update apt
apt-get update

# install the new kernel
apt-get install linux-generic-lts-raring

Great, now you have kernel installed in /boot/, next is to make it boot next time.

# find the exact names
find /boot/ -name '*3.8*'

# this should return some results

Now you need to manually edit /boot/grub/menu.lst, you will find a section at the bottom with the existing options. Copy the top one and substitute the new kernel into that. Make sure the new kernel is on top, and double check kernel and initrd point to the right files.

Make special care to double check the kernel and initrd entries.

# now edit /boot/grub/menu.lst
vi /boot/grub/menu.lst

It will probably look something like this:

## ## End Default Options ##

title      Ubuntu 12.04.2 LTS, kernel 3.8.x generic
root       (hd0)
kernel     /boot/vmlinuz-3.8.0-19-generic root=/dev/xvda1 ro quiet splash console=hvc0
initrd     /boot/initrd.img-3.8.0-19-generic

title      Ubuntu 12.04.2 LTS, kernel 3.2.0-38-virtual
root       (hd0)
kernel     /boot/vmlinuz-3.2.0-38-virtual root=/dev/xvda1 ro quiet splash console=hvc0
initrd     /boot/initrd.img-3.2.0-38-virtual

title      Ubuntu 12.04.2 LTS, kernel 3.2.0-38-virtual (recovery mode)
root       (hd0)
kernel     /boot/vmlinuz-3.2.0-38-virtual root=/dev/xvda1 ro quiet splash  single
initrd     /boot/initrd.img-3.2.0-38-virtual

Reboot server (either via command line or console)

# reboot

Verify the kernel was updated

uname -a
# Linux docker-12-04 3.8.0-19-generic #30~precise1-Ubuntu SMP Wed May 1 22:26:36 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

# nice! 3.8.

Now you can finish with the ubuntu_linux instructions.