[kwlug-disc] Virtualization technology

[Jonathan Poole]

I think it maybe a bit of sunk cost, but also big companies like a ‘bit pointy finger’ to swag around when problems arise.  If they are heavily invested into vmware, and trip a bug, vmware is obligated to fix.  OpenStack has KVM support which has probably gained a lot of traction over the last few years as the hypervisor race moves along.

IMHO kvm is gaining traction as it has matured, and management of single-host to multi-node hypervisor (aka clusters) has matured to a point where its do-able, and with that the cost being so low, gained a big push.

A few years back I setup a proxmox cluster with some old solaris machines utilized for NFS heads (lots of spindles directly attached) running ZFS/NFS presenting to a handful of linux machines running proxmox.  This was the ‘shared storage’ for KVM/QEMU virtual disk images that could be hot potatoed across the cluster with very little notice.  It had it’s quirks, but the feature set was solid if a few years ago (Jan 2011-2012), and without vmware licensing fee’s, or big learning curve of going to openstack, this didn’t break the bank for re-provisioned hardware.




On Jul 29, 2014, at 6:02 PM, Khalid Baheyeldin <kb at 2bits.com> wrote:

> Thanks to all who replied.
> 
> Seems that libvirt (which has virsh in it) is the way to go and be VM
> technology independent (of sorts).
> 
> Now, for another aspect of all this ...
> 
> When I used VPSs, they have always been Xen based (SliceHost,
> RackSpace Cloud, Linode, Amazon AWS), and performance is good.
> 
> But for the past few years I have been hearing that KVM is the way to
> go, and it is better than Xen, ...etc.
> 
> Why are people saying that?
> Is it overhype?
> If it is true then why are the above big companies staying with Xen
> and not moving to KVM?
> Is it just inertia and sunk cost?
> 
> -- 
> Khalid M. Baheyeldin
> 2bits.com, Inc.
> Fast Reliable Drupal
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> 
> 
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