Tim Groeneveld

ShareSource has a new look, and it’s getting released in seven days. ShareSource3. SS3. It looks good, it feels perfect, and it works excellent. There are not really any new features, and the database schema is mostly the same (except for ten new tables), but all the missing things that just were not always there are now there.

Now Administrators of the website will have even easier control over news features, and now project administrators can unlock files, and modify the contents. Files are now stored on two machine in two different locations, as well!

It does get better! ShareSource will have the ability to create Xen containers, so you can virtually choose almost any operating system on the planet (except for Apple OS X) and compile, run and test applications.

Developers and users alike will enjoy the new look ShareSource has been christened with.

No! When I Xen, I am not talking about a relationship to foreign material. Well, that is – not exactly. Xen is an open source hypervisor. Think: VMware, but much, much cooler.

I was talking to Tim Post, about a project that I was completing for ShareSource2. Basically, the conversation came to the point where I said that I was using OpenVZ for my server virtualization. Tim then came to me and said “Why don’t you just use Xen”.

Well, I was not born yesterday – I did tell him that I had tried Xen, and that when I tried it – it just refused to work.

Then Tim pointed me to Xen unstable, a mercurial repository containing a version of Xen that does not need a new CPU to actually boot up.

Xen unstable, the version I checked out yesterday, is actually tagged as being “3.2.0-rc4″, which probably means that it is coming it’s way to becoming a nice stable Xen product that people other then me have actually been able to use.

This is what I used on my Debian to be able to install a Xen-enabled kernel:

~# mkdir Xen
~# cd Xen
~# hg clone http://xenbits.xensource.com/xen-unstable.hg
[[ wait for around 3 minutes while it grabs Xen's history
~# cd xen-unstable.hg
~# apt-get install bin86 bcc
~# make world
[[ Note: this step will also check out a 2.6.18.8-xen kernel ]]
~# sudo make install

Then I had to add an entry to my /boot/grub/menu.lst which looked like this:

title Xen 3.2 / XenLinux 2.6
kernel /boot/xen-3.gz console=vga
module /boot/vmlinuz-2.6.18.8-xen root=UUID=66559e96-e405-4a1d-be28-b8caf5b5b89d ro console=tty0
module /boot/initrd-2.6.18.8-xen.img

Reboot, select my new kernel, and faster then you can say “WOW IT WORKS” it was booting me into a brand new (well, actually, my OpenVZ kernel was 2.6.20 – so a brand old) kernel

To try Xen out, just go over to http://jailtime.org and download an image of a nice operating system (I chose CentOS 5.1). When you have downloaded your image, do the following:

tar -xvf {downloaded image name}
ls -lar
xen create -c {smallest file (usually)}

and Voila! First thing you should be introduced to is a nice Grub screen welcoming you to your Xen experience.

I am still as of today yet to actually have built my own Archlinux or Frugalware Xen image. If anyone knows how to do this successfully, please drop me a line or leave a comment!