Re: Help in vetting my steps for Postgres DB upgrade from Ver 13.X to ver 15.X

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(dot)klaver(at)aklaver(dot)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(at)yahoo(dot)com <mailto:esteembsv-forum(at)yahoo(dot)com>
> <mailto:esteembsv-forum(at)yahoo(dot)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(dot)klaver(at)aklaver(dot)com <mailto:adrian(dot)klaver(at)aklaver(dot)com>
>
>
>

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com