This is, indeed, the crux of the matter. The release cycle, for both
diablo and essex, has been that all kinds of incompatible changes are
made right until
the end. During the critical month before release when we need as many
people ad possible to deploy and test real clusters, documentation is
not available. Devstack was a huge step forward in essex because it
allowed people who already understood the differences between single and
multi-node to understand and cope with the incompatible changes to the
components in a way that was known (mostly) to be working. I would guess
that for every person brave enough to publish their struggles on this
list, there are many more who do not. The only ways I know to deal with
this are:
1. More stability. Fewer incompatible changes. This will come over time.
2. Require blueprints, tagged as such, for every API and configuration
change. Maintain a highly visible list.
The other is longer release cycles with longer freeze periods but that
is not going to happen.
-David
On 3/20/2012 2:57 PM, Michael Pittaro wrote:
Is Devstack helpful? I'm sure it is, but for developers only. It's just
bad to think about it as "self-documenting" Openstack, or to think that
it's the solution for everything. It has never been its purpose, and it
isn't taking that path, and thinking that it does is a huge mistake.
Hoping that I will be heard and understood,
Thomas Goirand (zigo)
I think you have hit the real issue of documentation right here.
Devstack has become a lightning rod for install and configuration
problems. However, I think the real problem is lack of detailed
configuration and installation information - for development,
packagers, and real world installations. devstack is just not
appropriate as a complete replacement for documentation and
dependencies.
Install and configuration documentation is an area we need to focus
on more, and it will need much more community involvement to really
make a difference. The situation is currently much better than it
was back in September 2011, so progress _is_ being made.
Having said that, the Devstack-Py [1] is an alternative project
which is progressing along nicely. It is intended to support
multiple distributions, with a focus on developer installs. Not
100% there yet for all scenarios, but usable and definitely more
hackable.
[1] https://launchpad.net/devstackpy
Mike
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