Re: Help in vetting my steps for Postgres DB upgrade from Ver 13.X to ver 15.X - Mailing list pgsql-general

On 12/2/24 15:41, Bharani SV-forum wrote:
> Ron/Adrian
> Thanks for your input.
> Your suggestion is
>
> *option#1*
>   ASIS-existing server = EC2 with Community PostgreSQL Ver 13.16.2*
> -  ensure to capture all the pre.req meant for ver 15.10 are being  met.
>       - enable logical replication tagged to proposed new EC2 server

No, logical replication != pg_upgrade process.

> (with newer Higher OS Version ).
>
>
> Proposed-new EC2 server (with new Operating System version along
>      Postgres Ver 13.16.2 and 15.10 Binaries)*
>       - install postgres 13.16.2 binaries
>      - have postgres setup on par with existing setup and having proper
> logical replication

Again, no.

>      - install postgres 15.10 binaries
>       - ensure to DISABLE auto startup and shutdown of postgres 13.16.2
>        - ensure to DISABLE auto startup and shutdown of postgres 15.10
>      - start postgres db ver 13.16.2 and ensure all are good. no errors
> in postgres log file
>      -  start performing pg_upgrade step to upgrade postgres from ver
> 13.16.2 to 15.10
>
> pl Vet the newer steps (revised version).

I don't know how much clearer it can be, follow the step by step
instructions shown here:

https://www.postgresql.org/docs/current/pgupgrade.html

"These are the steps to perform an upgrade with pg_upgrade:

[...]


"
>
>
> Regards
> Bharani
>
> On Monday, December 2, 2024 at 05:48:19 PM EST, Adrian Klaver
> <adrian.klaver@aklaver.com> wrote:
>
>
> On 12/2/24 14:46, Adrian Klaver wrote:
>  > On 12/2/24 14:31, Ron Johnson wrote:
>  >> On Mon, Dec 2, 2024 at 5:18 PM Bharani SV-forum
>  >> <esteembsv-forum@yahoo.com <mailto:esteembsv-forum@yahoo.com>
> <mailto:esteembsv-forum@yahoo.com>> wrote:
>  >>
>  >>     Team
>  >>     Pl Help in vetting my steps for Postgres DB upgrade from Ver 13.X to
>  >>     ver 15.X
>  >>
>  >>     Env = EC2 based Community PostgreSQL Ver 13.16.2
>  >>
>  >>     we will be performing upgrade of our EC2 server too along with new
>  >> OS.
>  >>
>  >>     Need help in vetting my steps for Postgres DB upgrade from Ver 13.X
>  >>     to ver 15.X
>  >>     *ASIS-existing server = EC2 with Community PostgreSQL Ver 13.16.2*
>  >>     - ensure to capture all the pre.req meant for ver 15.10 are being
>  >> met.
>  >>     - shutdown db.
>  >>     - take offline full backup (PG_DATA folder alone)  using OS command
>  >>
>  >>     *Proposed-new EC2 server (with new Operating System version along
>  >>     Postgres Ver 15.10 Binaries)*
>  >>     - install postgres 15.10 binaries
>  >>     - ensure to DISABLE auto startup and shutdown of postgres 15.10
>  >>     -  Restore offline full backup (PG_DATA folder alone) using OS
>  >> command
>  >>     -  start performing pg_upgrade step to upgrade postgres from ver
>  >>     13.16.2 to 15.10
>  >>
>  >>     please guide me, if i have missed any steps in the abovesaid process
>  >>
>  >>     To start new DB features, planning to rollout out the following
>  >>     feature's alone
>  >>     a) TLE extension for password compliance
>  >>     b) parallelize vacuum jobs to utilize -j option
>  >>
>  >>
>  >> To migrate from one server to another while upgrading, one must use
>  >> pg_dump/pg_restore OR Logical Replication.
>  >
>  > Really?
>  >
>  > Then this:
>  >
>  > https://www.postgresql.org/docs/current/pgupgrade.html
> <https://www.postgresql.org/docs/current/pgupgrade.html>
>  >
>  > must be random nose.
>
> Oh yeah, that was smooth.
>
> Second attempt:
>
> ... must be random noise.
>
>
>  >
>  >>
>  >> --
>  >> Death to <Redacted>, and butter sauce.
>  >> Don't boil me, I'm still alive.
>  >> <Redacted> lobster!
>  >
>
> --
> Adrian Klaver
> adrian.klaver@aklaver.com <mailto:adrian.klaver@aklaver.com>