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Migrate OpenLDAP to MDB backend
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Description

Our LDAP installations currently use the HDB backend in OpenLDAP.

This backend has been removed in OpenLDAP 2.5 (which will be in Debian 12/bookworm), so we should migrate to the MDB backend at some point.

Event Timeline

Change 881422 had a related patch set uploaded (by Muehlenhoff; author: Muehlenhoff):

[operations/puppet@production] slapd: Add support to configure MDB storage backend (WIP)

https://gerrit.wikimedia.org/r/881422

Change 881422 merged by Muehlenhoff:

[operations/puppet@production] slapd: Add support to configure MDB storage backend

https://gerrit.wikimedia.org/r/881422

Change 896110 had a related patch set uploaded (by Muehlenhoff; author: Muehlenhoff):

[operations/puppet@production] slapd: correct module loading

https://gerrit.wikimedia.org/r/896110

Change 896359 had a related patch set uploaded (by Muehlenhoff; author: Muehlenhoff):

[operations/puppet@production] Configure database size for MDB backend

https://gerrit.wikimedia.org/r/896359

Change 896110 merged by Muehlenhoff:

[operations/puppet@production] slapd: correct module loading

https://gerrit.wikimedia.org/r/896110

Change 896359 merged by Muehlenhoff:

[operations/puppet@production] Configure database size for MDB backend

https://gerrit.wikimedia.org/r/896359

Change 961352 had a related patch set uploaded (by Muehlenhoff; author: Muehlenhoff):

[operations/puppet@production] Make the dbconfig settings conditional on the hdb backend

https://gerrit.wikimedia.org/r/961352

Change 961352 merged by Muehlenhoff:

[operations/puppet@production] Make the dbconfig settings conditional on the hdb backend

https://gerrit.wikimedia.org/r/961352

MoritzMuehlenhoff triaged this task as Medium priority.