(ITS#9094) LDAP server out of memory

[gihanridal8@gmail.com]

Full_Name: Gihan De Silva
Version: 2.4.44
OS: 7.5
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (123.231.119.138)


Dear Sir/ Madam,

We are having two OpenLDAP servers on production with master master data
synchronization. We are facing an incident where both servers consume memory
upto 99% and LDAP server2 leads to not responding state.
 
As a workaround we have restart both OpenLDAP nodes. However after few days the
memory goes high at its peak.

There are about 100k+ requests for one LDAP server per day. where both servers
are identical in terms of 16 GB RAM, 4 CPUs, CentOS7 OS and LDAP server 2.4.44.
We didnt observe any suspiciuos errors in the logs as well.

Appreciate your valued consultation and recomendations on this incident for a
RCA and a solution.


Thank You

Regards,
Gihan.