[openstack-dev] [Cinder] A possible solution for HA Active-Active

Jeremy Stanley fungi at yuggoth.org
Wed Aug 5 13:40:11 UTC 2015


On 2015-08-05 15:31:03 +0200 (+0200), Philipp Marek wrote:
> > > > [...]
> > > > > Pacemaker is *the* Linux HA Stack.
> > > > [...]
> > > > 
> > > > Can you expand on this assertion? It doesn't look to me like it's
> > > > part of the Linux source tree and I see strong evidence to suggest
> > > > it's released and distributed completely separately from the kernel.
> > > 
> > > If you read "Linux" as "GNU/Linux" or "Linux platform", instead of
> > > "Linux kernel", it's what I meant.
> > [...]
> > 
> > Okay, that makes slightly more sense. So you're implying that
> > Pacemaker is the only HA stack available for Linux-based platforms,
> > or that it's the most popular, or... I guess I'm mostly thrown by
> > your use of the definite article "the" (which you emphasized, so it
> > seems like you must mean there are effectively no others?).
> 
> Well, SUSE and Redhat (7) use Pacemaker by default, Debian/Ubuntu have it 
> (along with others)...
> 
> That gives it quite some market share, wouldn't you think?
> 
> Yes, I guess the "most popular" meaning is a good match here.

I see, so in the same way that "nano is *the* Linux text editor"
(Debian/Ubuntu configure it as the default, SUSE and Redhat have it
packaged). Popularity alone doesn't seem like a great criterion for
making these sorts of technology choices.
-- 
Jeremy Stanley



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