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Re: openldap 2.4.43 keeps crashing

I expirience the very same on FreeBSD since quite some versions already - in fact since 2010. I had to develope a workaround which is a monitoring script. It starts the service again everytime it died. The root cause could never be found. Please find the link below for further information:


Best regards

Am 28.12.15 um 10:28 schrieb Dieter Klünter:
Am Mon, 28 Dec 2015 10:31:35 +0400
schrieb Jephte Clain <jephte.clain@univ-reunion.fr>:

hello all,

I upgraded to OpenLDAP 2.4.43 three weeks ago. It runs on debian
squeeze 64bits lts
it is built from sources with the fix from ITS#8330

Since the upgrade, it keeps crashing regularly (I would say once
every 2 to 5 days)
However, there isn't anything in the logs: no message, no error, no

slapd no longer runs, I restart it, and it runs ok until the next

now I don't know how to debug that.
I could downgrade to the previous version (2.4.41) which worked fine,
but as our university is closed until 01/11, this is the perfect time
to investigate. I still don't know if it's a bug in 2.4.43 or a
misconfiguration for which previous versions was forgiving

What are your advice to track down the cause for the crash?
Check whether openldap has been built with --enable-debug=yes.
If so set ulimit -c unlimited, which hopefully will create a core dump
on a crash.