Re: pgbasebackup necessary for master slave change?

On Thu, Dec 8, 2016 at 11:01 AM, Subhankar Chattopadhyay <
subho(dot)atg(at)gmail(dot)com> wrote:

> pg_rewind cannot be used as I am on 9.4.
>
> Anything else?
>

Upgrade to 9.5 or 9.6? ;-)

This is a known limitation in Postgres that pg_rewind was written to
address.

>
> On Thu, Dec 8, 2016 at 3:23 PM, Achilleas Mantzios
> <achill(at)matrix(dot)gatewaynet(dot)com> wrote:
> > On 08/12/2016 11:33, Subhankar Chattopadhyay wrote:
> >>
> >> Hi,
> >>
> >> Few days back I had asked if it is needed to to pg_basebackup for
> >> every database update. From John I understood that it is unnecessary
> >> and if the slave is syncing, even if it is catching up, it would be
> >> able to sync without doing pg_basebackup. This is working also for me.
> >>
> >> However, for a failover scenario, where a master goes down, and I make
> >> the slave as master, and then when the old master comes back as a
> >> slave again, if I don't take pg_basebackup from the new master, it
> >> cannot follow the new master. This is kind of an overhead. Is there a
> >> way I can make the old master follow the new master without having to
> >> do full backup?
> >
> > pg_rewind
> >>
> >>
> >>
> >>
> >> Subhankar Chattopadhyay
> >> Bangalore, India
> >>
> >>
> >
> >
> > --
> > Achilleas Mantzios
> > IT DEV Lead
> > IT DEPT
> > Dynacom Tankers Mgmt
> >
> >
> >
> >
> > --
> > Sent via pgsql-general mailing list (pgsql-general(at)postgresql(dot)org)
> > To make changes to your subscription:
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>
>
>
> --
>
>
>
>
> Subhankar Chattopadhyay
> Bangalore, India
>
>
> --
> Sent via pgsql-general mailing list (pgsql-general(at)postgresql(dot)org)
> To make changes to your subscription:
> http://www.postgresql.org/mailpref/pgsql-general
>

--
Best Wishes,
Chris Travers

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