Thread: Re: Backup Restore from other node after switchover/failover

Re: Backup Restore from other node after switchover/failover

From

Sushant Pawar

Date:

28 October 2020, 15:22:17

Hi Dirk,

Yes, this will work fine. You can use the existing backup to restore it on the new node and use the WAL archives from new node for the recovery purpose. As a best practice, I would suggest setting the parameter "recovery_target_timeline=latest" in your recovery command to ensure the recovery happens along the latest timeline.

Regards

Sushant

On Wed, Oct 28, 2020 at 2:53 PM Dirk Krautschick <Dirk.Krautschick@trivadis.com> wrote:

Hi,

haven’t tested it yet but maybe I can get a quick answer here.
We have discussed the following scenario.

Few nodes as streaming replication cluster all in sync with taking backup
only from one dedicated node. Now that node which is responsible for the backups
goes down. For sure I have a full backup taken from that crashed node
some time ago but now this node is gone and I have to take care for a
restore for some reason.

Am I able to make a full restore with that last backup from the offline node
to any other still existing node with Recovering the archived WAL from the new
selected node if I have activated archive_mode as “always”?

Or is it strictly necessary to create a new full backup from the new node
which is responsible for the backups after the failover or maybe after a
Switchover, too?

Thanks and best regards

Dirk