[ovirt-users] oVirt on a single server

[Nir Soffer]

On Sun, Sep 4, 2016 at 11:45 PM, zero four <zfnoctis at gmail.com> wrote:
> My current understanding is that oVirt no longer supports any single-server
> configuration since the All-In-One install was removed in 3.6.  While the
> hosted-engine install was supposed to replace it, it requires either
> networked storage (nfs, iscsi) or Glusterfs.  To my knowledge nfs/iscsi
> exported to localhost is not supported,

nfs exported to localhost may be fragile. iscsi server on your single host
should work.

The best option for single host is local storage, but I don't know if hosted
engine supports it.

> so I would need at least 2 machines.
> Furthermore Gluster requires at least 3 sources of storage for quorum (it
> would be great if there was an option to acknowledge the risks and
> continue), meaning a single machine is not practical.

You can use single glusterfs brick, I think it should work wit hosted engine
setup.

> I understand and acknowledge that oVirt is not targeted towards homelab
> setups, or at least small homelab setups.  However I believe that having a
> solid configuration for such use cases would be a benefit to the project as
> a whole.  It allows oVirt to be much more visible in the homelab community,
> and more accessible to testing which in turn yields more people who have
> experience with oVirt.  As it stands most other virtualization products
> allow for usage (not just a livecd) in a single server environment, although
> not all features can be used of course.  vSphere, Xenserver, Proxmox, FIFO,
> and Nutanix all allow an installation on a single server. It appears that
> oVirt/RHV is the odd-one out - and it honestly shows when you look at what
> people talk about online - there is a huge gap between even Proxmox and
> oVirt when it comes to mindshare in the tech community, and it does not
> favor oVirt.

I agree that it would nice if the all-in-one option was still available, but
someone has to maintain this setup.

For single host, better use virt-manager. You can import the vms later to
ovirt when you want to scale your lab.

If you want to experiment with ovirt, you can use virt-manager to create
several vms - if you enable nested kvm, you can use the vms as your
hosts. This is the standard setup we use for development.

Nir