At Sun, 21 Dec 2014 23:14:42 +0100 [** ISO-8859-1 charset **] Michael Strödermichael@stroeder.com wrote:
Florian Weimer wrote:
- Onno van der Straaten:
Ubuntu server upgrade from 12.04 to 14.04 LTS will purge the OpenLDAP directory data.
Is there an Ubuntu bug for this behavior? It's a bit odd.
One should generally be careful with system upgrades.
Esp. major version jumps.
AFAIK on-disk-format might change because of Berkeley-DB version upgrade.
Which suggests that one needs to dump the 12.04 database (to ldif text format) and then reload it into the fresh 14.04 database.
(This is what I did when I upgraded a old server running CentOS 5 to a new server running CentOS 6.)
But without knowing about the backend configuration used it's impossible to track this down.
This is the reason *RedHat* Enterprise Linux is never recomended to do upgrades across major versions. The recomended practice is allways a fresh install. (Of course, RHEL has a much longer lifetime and package APIs generally make a *big* jump.) Ubuntu has a shorter life span, so things *generally* don't make such a big jump, but it looks like that is not always the case.
Ciao, Michael. (not an Ubuntu user)