Re: Postgres wal shipping from 8.33 to 8.42.

On Thu, Feb 4, 2010 at 8:58 AM, Thom Brown <thombrown(at)gmail(dot)com> wrote:
> On 4 February 2010 15:54, Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com> wrote:
>> On Thu, Feb 4, 2010 at 7:54 AM, Chris Barnes
>> <compuguruchrisbarnes(at)hotmail(dot)com> wrote:
>>> We are trying to minimize our downtime in production to upgrade from 8.33 to
>>> 8.42.
>>>
>>> What we would like to be able to do is this:
>>> Upgrade the slave we are currently shipping to, to version 8.4.2. Continue
>>> to pitr to this server. And switch over and then upgrade the master.
>>>
>>> My question is, will pitr wal logs ship and be processed from a machine
>>> running 8.33 to 8.42.
>>
>> Nope.  But you can use slony to upgrade.
>>
>
> Or pg_migrator? http://pgfoundry.org/projects/pg-migrator

For minimal downtime, slony would win, but for reducing effort,
pg_migrator wins.