Re: pgbasebackup necessary for master slave change?

Поиск
Список
Период
Сортировка
От Chris Travers
Тема Re: pgbasebackup necessary for master slave change?
Дата
Msg-id CAKt_ZftznniipHP8jqk_5_w6UGGVigPP3WY-h1FmMVes-ctOuQ@mail.gmail.com
обсуждение исходный текст
Ответ на pgbasebackup necessary for master slave change?  (Subhankar Chattopadhyay <subho.atg@gmail.com>)
Ответы Re: pgbasebackup necessary for master slave change?
Список pgsql-general


On Thu, Dec 8, 2016 at 10:33 AM, Subhankar Chattopadhyay <subho.atg@gmail.com> 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?

Depending on your version and circumstance, pg_rewind may address your problem.
https://www.postgresql.org/docs/9.5/static/app-pgrewind.html 



Subhankar Chattopadhyay
Bangalore, India


--
Sent via pgsql-general mailing list (pgsql-general@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-general



--
Best Wishes,
Chris Travers

Efficito:  Hosted Accounting and ERP.  Robust and Flexible.  No vendor lock-in.

В списке pgsql-general по дате отправления:

Предыдущее
От: "Charles Clavadetscher"
Дата:
Сообщение: Re: Who dropped a role?
Следующее
От: Subhankar Chattopadhyay
Дата:
Сообщение: Re: pgbasebackup necessary for master slave change?