anyone aware of a high availability setup that relies on fully redundant install?

[greg@kroah.com (Greg KH)]

On Sun, Apr 17, 2016 at 01:16:10PM -0400, Robert P. J. Day wrote:
> On Sun, 17 Apr 2016, Greg KH wrote:
> 
> > On Sun, Apr 17, 2016 at 10:47:55AM -0400, Robert P. J. Day wrote:
> > >
> > >   i figure this is as good a place as any to ask ... is anyone here
> > > aware of anyone using a linux config and install that, for the
> > > purposes of reliability or high availability or whatever you want to
> > > call it, relies on a second, completely independent installation of
> > > linux on the same hard drive?
> >
> > ChromeOS and CoreOS do this.  There's lots of documentation on the
> > ChromeOS site for how this works and what is involved.
> 
>   interesting ... does the CoreOS functionality depend on containers?

Nope, not at all, it's the same design as ChromeOS.

> what little i know about CoreOS, i would think there's no way to use
> it *without* containers.

Not true at all, you can use it without containers, it's just not all
that useful as odds are, the application you want to use isn't included
in it so you need a container for that.

greg k-h