Re: pg_upgrade in primary/standby architecture

> From: Murthy Nunna <mnunna(at)fnal(dot)gov>
>To: Venkata Balaji Nagothi <vbnpgc(at)gmail(dot)com>
>Cc: "pgsql-admin(at)postgresql(dot)org" <pgsql-admin(at)postgresql(dot)org>
>Sent: Tuesday, 18 March 2014, 12:49
>Subject: Re: [ADMIN] pg_upgrade in primary/standby architecture
>
>
>
>Hi Venkata Balaji,
> 
>Thank you!
> 
>Yes, streaming replication cannot be setup between two different versions. That is true.
> 
>I am looking to upgrade both primary and standby with minimal outage to application….. I want to know if it is possible. If it is not possible, is there any architecture where we can minimize upgrade related outage?
> 

You could use Slony-I for this, and it should be fairly quick to set up now that as of 2.2 you can add multiple tables and sequences in one go with SET ADD TABLE.