Photos from SNW Europe 2009 conference

Here are a few pictures I made while participating at the SNW Europe 2009 conference:

• The conference (held at the Congress Frankfurt, Germany)
• Some slides from the conference

The conference gathered topics such as Storage, Cloud Storage and Services, Virtualization, Solid Storage, IT Management, etc.

Installing Linux kernel headers for Amazon EC2 Ubuntu instances

When you play around with Ubuntu EC2 instances on AWS you might, at one point, stumble upon needing to install the Linux kernel headers to build some kernel module(s) from source. However, the standard Ubuntu repositories do not offer the -xen images used to build those AMI's:

# apt-get install linux-headers-`uname -r`
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Couldn't find package linux-headers-2.6.27-23-xen

You should try to use the Ubuntu EC2 PPA packages for the Xen kernels — e.g.  you may use the following:

# echo "deb http://ppa.launchpad.net/ubuntu-on-ec2/ppa/ubuntu YOUR_UBUNTU_VERSION_HERE main" >/etc/apt/sources.list.d/ubuntu-on-ec2.list
# apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 9EE6D873
# apt-get update
# apt-get install linux-headers-`uname -r`

Don't forget to replace "YOUR_UBUNTU_VERSION_HERE" with your own Ubuntu flavour (hardy/intrepid).