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.
Specifically …
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: