[clue] VM test lab [was question, Nagios [talk]]

[Dan Kulinski]

Oh them are fighting words!  :-)

I use libvirt. I simply run virt-install, point it at a fedora or centos
URL and instant VM.  With a little bit of XML editing I can create another
image that uses that new image as a backing store.  Do this three times,
boot the VM and edit the network persistence rules (or use qemu-nbd and
mount images directly) and I have a test lab.  Most of this can be don in a
GUI with virt-manager on Fedora or CentOS.

I do this at work regularly to test out cluster software.  I love the
simplicity and if I screw it all up, no harm no foul ( except when you
cause network IP collisions but we won't talk about that).

Any more questions?  I can post some handy XML files.  I highly suggest
learning libvirt, extremely flexible (supports KVM, Zen, OpenVZ and
VMWare).  Lots of tools built on top of it too.

Dan
On May 21, 2012 6:19 PM, "David L. Anselmi" <anselmi at anselmi.us> wrote:

> Dan Kulinski wrote:
> > Just implement it and go.  Nothing teaches like doing.  Do you have a
> > machine at home?  Setup 3 simple VMs.  Instant test lab.
>
> Sounds like yak shaving to me. ;-)
>
> So which VM platform would you use?
>
> What tools to build images?  I discovered ganeti today, don't know if
> proxmox builds images or just
> manages VMs.
>
> Guess I'll have to go buy some memory too (my largest machine has 1GB).
>
> Thanks!
> Dave
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