88 lines
2.8 KiB
Markdown
88 lines
2.8 KiB
Markdown
<!--[metadata]>
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+++
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title = "Installation on Rackspace Cloud"
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description = "Installation instructions for Docker on Rackspace Cloud."
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keywords = ["Rackspace Cloud, installation, docker, linux, ubuntu"]
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[menu.main]
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parent = "smn_cloud"
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+++
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<![end-metadata]-->
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# Rackspace Cloud
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Installing Docker on Ubuntu provided by Rackspace is pretty
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straightforward, and you should mostly be able to follow the
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[*Ubuntu*](../ubuntulinux/#ubuntu-linux) installation guide.
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**However, there is one caveat:**
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If you are using any Linux not already shipping with the 3.8 kernel you
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will need to install it. And this is a little more difficult on
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Rackspace.
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Rackspace boots their servers using grub's `menu.lst`
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and does not like non `virtual` packages (e.g., Xen compatible)
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kernels there, although they do work. This results in
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`update-grub` not having the expected result, and
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you will need to set the kernel manually.
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**Do not attempt this on a production machine!**
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# update apt
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$ apt-get update
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# install the new kernel
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$ apt-get install linux-generic-lts-raring
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Great, now you have the kernel installed in `/boot/`, next you need to
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make it boot next time.
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# find the exact names
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$ find /boot/ -name '*3.8*'
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# this should return some results
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Now you need to manually edit `/boot/grub/menu.lst`,
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you will find a section at the bottom with the existing options. Copy
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the top one and substitute the new kernel into that. Make sure the new
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kernel is on top, and double check the kernel and initrd lines point to
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the right files.
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Take special care to double check the kernel and initrd entries.
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# now edit /boot/grub/menu.lst
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$ vi /boot/grub/menu.lst
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It will probably look something like this:
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## ## End Default Options ##
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title Ubuntu 12.04.2 LTS, kernel 3.8.x generic
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root (hd0)
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kernel /boot/vmlinuz-3.8.0-19-generic root=/dev/xvda1 ro quiet splash console=hvc0
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initrd /boot/initrd.img-3.8.0-19-generic
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title Ubuntu 12.04.2 LTS, kernel 3.2.0-38-virtual
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root (hd0)
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kernel /boot/vmlinuz-3.2.0-38-virtual root=/dev/xvda1 ro quiet splash console=hvc0
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initrd /boot/initrd.img-3.2.0-38-virtual
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title Ubuntu 12.04.2 LTS, kernel 3.2.0-38-virtual (recovery mode)
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root (hd0)
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kernel /boot/vmlinuz-3.2.0-38-virtual root=/dev/xvda1 ro quiet splash single
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initrd /boot/initrd.img-3.2.0-38-virtual
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Reboot the server (either via command line or console)
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# reboot
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Verify the kernel was updated
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$ uname -a
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# 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
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# nice! 3.8.
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Now you can finish with the [*Ubuntu*](../ubuntulinux/#ubuntu-linux)
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instructions.
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