If you are not planning an "inplace upgrade" (i.e. replace slapd on the same server), I'd suggest to do a test migration on a test machine. If you intend an inplace upgrade, I'd suggest to clone the current server to a test machine before trying. Once challenge can be if the new version has different modules linked statically than the older one has.

Kind regards, Ulrich Windl

-----Original Message----- From: justin@1707.io justin@1707.io Sent: Monday, March 24, 2025 8:46 AM To: openldap-technical@openldap.org Subject: [TM Spam]: [EXT] Upgrade from 2.4.45 to 2.4.49 and beyond

Hey Everyone,

I've inherited some rather unmaintained servers as part of a new job and I'm looking to get them all up to date.

We have a server for auth for satellite services that uses slapd/openLDAP. It's on a rather old version, and I'm wanting to upgrade it.

I would like to see if anyone has advice on how to upgrade from Ubuntu 18.04.6 with the current 2.4.45 slapd/OpenLDAP to Ubuntu 24.04.

I've looked around to try and find guides that show upgrades notes between versions but haven't found anything relevant.

All advice appreciated!

Regards,

Justin