In response to Christopher Browne <cbbrowne at ca.afilias.info>:

> Bill Moran wrote:
> > Based on the docs here:
> > http://slony.info/documentation/slonyupgrade.html
> > it would seem that I have to run the exact same version of Slony on all
> > nodes at all times.  If I want to change that version, I have to update
> > all nodes simultaneously.
> >
> > With regards to updating and versions, is this for _any_ version change?
> > I'm guessing that I can't have a cluster with some 1.1 Slony and some 1.2
> > Slony.
> >   
> > But, in this particular case, I'm looking at moving some systems from 1.2.6
> > to 1.2.9.  Do I have to move them all at once, or is the API locked down
> > in the 1.2 version so that slight disparities are OK?
> The slon will refuse to connect to nodes that are not on the same
> version.  That is, if the slon is of version 1.2.6, it will not connect
> to nodes that have schema/functions set up for version 1.2.9.  And
> vice-versa.  A slon 1.2.9 will refuse to connect to 1.2.6 nodes until
> they are updated to v1.2.9.
> 
> Slight disparities:  Not OK...

Thanks again, Chris.

-- 
Bill Moran
Collaborative Fusion Inc.
http://people.collaborativefusion.com/~wmoran/

wmoran at collaborativefusion.com
Phone: 412-422-3463x4023