Re: Major Version Upgradation in Replication Environment

On Thu, May  5, 2016 at 03:59:00PM +0200, Guillaume Lelarge wrote:
> 2016-05-05 11:48 GMT+02:00 Vicky Soni - Quipment India <vicky.soni@quipment.nl>
> :
>
>
>     Hello Friends,
>
>      
>
>                             We have a windows setup where we have 2 node
>     primary-slave setup which comprises Async Replication + Log Shippin on slave.
>
>      
>
>     Now we want to upgrade it from 9.3 to 9.4 version.
>
>      
>
>     Do we need to upgrade slave to 9.4, upgrade master to 9.4 and setup replication
>     again from scratch?
>
>      
>
>
>
> Just upgrade master to 9.4, install 9.4 on slave, and setup replication again.
>  
>
>     What are the best possible ways available to upgrade slave and master without
>     setting up replication again?
>
>
>
> You can't.

Actually, the 9.5 pg_upgrade docs have in insructions on how upgrade a
slave without recreating the slave image, and it works back to 9.1:

        http://www.postgresql.org/docs/9.5/static/pgupgrade.html
        Upgrade Streaming Replication and Log-Shipping standby servers