Re: pg_upgrade in primary/standby architecture

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>> 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
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>>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?
>> 
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> 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.

I have a small guide that can be useful.

Saludos,
Gilberto Castillo
La Habana, Cuba