RE: How to move a postgres server

From: Ron Watkins [mailto:rwatki(at)gmail(dot)com]
Sent: Saturday, 17 February 2018 6:05 AM
To: pgsql-admin(at)lists(dot)postgresql(dot)org
Subject: How to move a postgres server

I have a postgres server with 2 databases residing on a host which is being de-commissioned.
I need to move the postgres server itself, including the databases to a new host.
All the stuff I can find on the web talks about moving the database, but I need to move the entire server.
Am I missing something here?
Am I suppose to create an identical server on the new host (with the same server name), then backup/restore the databases individually? Is there not any way to move the entire server?

Hi,

The best way to do that with minimal downtime would be to use streaming replication. But that depends on a few other findings as below

1) Version of the PostgreSQL server

2) Size of the databases

3) What OS: Linux/Win etc. and their versions

If the downtime is affordable, then build a new server with most recent patch updates and an installation of the same PostgreSQL version on it. Then, shutdown the database cluster, copy the files across and bring up the cluster on the new server. Although, I would not recommend this approach but this is the simplest way to move the PostgreSQL server when downtime is not a big deal.

~

Nawaz Ahmed
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