I ran into an interesting problem with my new server the other day.
Due to a hardware problem with an external USB hard drive, I had to reboot the XEN host.
I had to do the reboot remotely … so I couldn’t intervene if something went wrong. Yes, you guessed it, something did go wrong.
When I finally got home I found the system trying to boot ‘bree’ … which is one of the XEN guest machines.
I need some virtualization advice.
I’m currently running this blog, among others, on XEN 3.1.2 based virtualization on CentOS 5.5.
At the present time, I have three physical machines running … rivendell, gondor, and middle-earth.
Middle-earth”is the XEN host.
Rivendell and gondor are stand alone servers running Fedodra 10.
Currently gondor is primarily a web server and backup mail delivery server.
Rivendell is the main system and acts as a NIS server, MySQL server, samba file server, chat server, mail server, etc.
My goal is to migrate all the functions from rivendell & gondor to XEN instances on middle-earth.
My questions relate to where to run services, file systems, and processor allocation.
OK, I’m jumping in with both feet.
This post starts my test of server virtualization.
This blog is now running on a virtualized instance of CentOS 5.5 … running inside a CentOS 5.5 managed XEN hypervisor.
It has 4gb of RAM and two processors allocated.
Keep your fingers crossed. 🙂
One of the goals I have for the new system is to replace the two existing servers.
My current plan is to do this via virtualization.
There are a number of virtualization options available … each with advantages & disadvantages.
The virtualization products I’m currently consider are: