Mailinglist Archive: opensuse (3156 mails)

[Aaron Kulkis <akulkis00@xxxxxxxxxx>]

Lars Marowsky-Bree wrote:
> On 2007-11-27T06:35:36, Aaron Kulkis <akulkis00@xxxxxxxxxx> wrote:
>
> > Clustering just makes use of the normally unused
> > "a" "b" and "c" runlevels.
>
> That's a very special example of clustering. I've never seen a cluster
> product which did; which one do you have in mind?

I should have said that a very old method was by
using the a, b, and c runlevels.

Every clustering product I've ever seen has been an
expansion of the regular run-levels, basically adding
a "cluster-state" on top of the run-level state.

> > For a two-host cluster, you can
> > completely implement the cluster
> > with runlevels a, b, and c.
> >
> > Run level a for normal cluster operations.
> > Run level b for when the other host is down.
> > Run level c for deliberately leaving the cluster.
>
> Certainly an interesting approach, yes.

It's a very, very old method.




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