[CentOS-virt] Slightly OT: Centos KVM Host/Guest functions and LVM considerations
ejs at shubes.net
Fri Sep 16 16:46:27 EDT 2011
On 09/16/2011 01:10 PM, Ed Heron wrote:
> I've been considering this type of setup for a distributed
> virtualization setup. I have several small locations and we would be
> more comfortable having a host in each.
> I was nervous about running the firewall as a virtual machine, though
> if nobody screams bloody murder, I'll start exploring it further as it
> could reduce machine count at each location by 2 (backup fw).
I've been running IPCop as a VM for a few years now. Works like a charm.
You can set up VPNs between IPCop VMs as well if you like, effectively
bridging LANs at each location. Just be sure that subnets are distinct
at each location.
I like less hardware. Fewer points of failure means more reliability
(with the exception of redundant parts of course) as well as cost savings.
> I'm not as paranoid about the host providing storage to the VM's
> directly, for booting.
There might be a good reason for doing so that hasn't occurred to me.
I wouldn't lose much sleep over it. Whatever works. ;)
> I'm considering using DRBD to replicate storage on 2 identical hosts
> to allow fail-over in the case of a host hardware failure.
A fine idea, if you can swing it. To be honest though, with the HDDs on
raid-1, the likelihood of failure is rather small. Depending on your
cost of down time, it might do just as well to have spare parts (or a
spare machine) standing by cold. Depends on the business need though. I
do like having spare hardware at hand in any case.
> What kind of VM management tool do you use; VMM or something else?
As I said, I've been using VMware Server up to this point, so I've been
using that web interface primarily, with cli configuration editing where
As I'll be migrating to KDE/CentOS very soon, does anyone have
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