| From: | Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at> |
|---|---|
| To: | Murthy Nunna <mnunna(at)fnal(dot)gov>, "pgsql-admin(at)lists(dot)postgresql(dot)org" <pgsql-admin(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Linux in-place upgrade |
| Date: | 2023-06-26 17:35:45 |
| Message-ID: | d64e4eb55d54623550db9ccbe54699605029752e.camel@cybertec.at |
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| Lists: | pgsql-admin |
On Mon, 2023-06-26 at 17:13 +0000, Murthy Nunna wrote:
> We are planning an in-place upgrade of Linux level from RHEL 7 to RHEL 8 or RHEL 9.
> We have several PG clusters running on this server using different versions of postgres (pg12, pg13 and pg14).
>
> We have couple of plans:
>
> 1. Shutdown clusters, unmount disks that contain postgres data and wals, upgrade Linux,
> remount postgres disks and restart postgres clusters
> 2. Same as above but reinstall postgres (pg12, pg13 and pg14) before restarting postgres clusters
>
> Questions:
> 1. Will 1 or 2 or both above work?
> 2. Is there any official documentation above OS upgrades?
The documentation is here:
https://www.postgresql.org/docs/current/upgrading.html
It depends on how you installed PostgreSQL. If you used binary packages, Option 1 should work fine.
Don't forget to reindex all indexes on strings!
Yours,
Laurenz Albe
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