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: