Thread: WAL replication from an Old Production server
List,
I have to perform WAL Streaming replication configuration for
An existing small production server with 600 GB of size grown over for two years. There is no WAL replication in place configured as of now.
2. If I want to perform WAL replication to a new Standby Server
How to copy the 600 GB of DB data to Standby? OR when we configure the WAL replication attributes on primary and standby will the Standby automatically copy all the 600 GB data to the defined WAL archive dir ?
Or Do I need to manually copy the data directory of primary by SCP over NW or by copying the data directory of Primary to a USB disk and manually copy to the WAL archive_dir folder defined in the standby ? What method to follow ? why?
3. In WAL streaming replication what ports/protocols are used for copying the data directory of primary to archive_dir of standby server and for Streaming ?
yours,
Krishane
On 12/13/22 04:16, KK CHN wrote: > List, > > I have to perform WAL Streaming replication configuration for > > An existing small production server with 600 GB of size grown over for > two years. There is no WAL replication in place configured as of now. > > 2. If I want to perform WAL replication to a new Standby Server > How to copy the 600 GB of DB data to Standby? OR when we configure > the WAL replication attributes on primary and standby will the Standby > automatically copy all the 600 GB data to the defined WAL archive dir ? > > Or Do I need to manually copy the data directory of primary by SCP over > NW or by copying the data directory of Primary to a USB disk and > manually copy to the WAL archive_dir folder defined in the standby ? > What method to follow ? why? > > 3. In WAL streaming replication what ports/protocols are used for copying > the data directory of primary to archive_dir of standby server and for > Streaming ? The Google search "how to set up streaming replication in postgresql 12" answered all my questions. -- Angular momentum makes the world go 'round.
Hello KK,
I recommend you to check the link below. It includes a step by step tutorial for streaming replication.
On Tue, 13 Dec 2022 at 12:17, KK CHN <kkchn.in@gmail.com> wrote:
List,I have to perform WAL Streaming replication configuration forAn existing small production server with 600 GB of size grown over for two years. There is no WAL replication in place configured as of now.2. If I want to perform WAL replication to a new Standby ServerHow to copy the 600 GB of DB data to Standby? OR when we configure the WAL replication attributes on primary and standby will the Standby automatically copy all the 600 GB data to the defined WAL archive dir ?Or Do I need to manually copy the data directory of primary by SCP over NW or by copying the data directory of Primary to a USB disk and manually copy to the WAL archive_dir folder defined in the standby ? What method to follow ? why?
It is up to you. You can initialise your standby instance by either using pg_basebackup or copying the cluster manually.
3. In WAL streaming replication what ports/protocols are used for copying the data directory of primary to archive_dir of standby server and for Streaming ?
It uses PostgreSQL's replication protocol and PostgreSQL's port.
Best regards.
Samed YILDIRIM
yours,Krishane