Kerberos master/master sync using OpenLDAP N-Way Multi-Master

Mathew Rowley mathew_rowley at
Wed Mar 11 19:13:33 EDT 2009

I haven¹t seen this idea posted anywhere.  The new version of OpenLDAP (I¹m
using 2.4.15) has the ability to run in a multi-master mode.  I was able to
set up two servers that each ran a Kerberos instance as well as an OpenLDAP
instance that had ldap and kerberos failover.  I now don¹t need to worry
about doing any sync with Kerberos, as LDAP does it all. I can also run
kadmin against either of the kerberos servers. Some tests I did that were
pretty successful were:

Realm setup:
  kdc =
  kdc =

Turn off kdc on kdc01 -> successfully authenticated with kdc02
Turn on kdc but turn off ldap on kdc01 -> successfully authenticated with

The failover works exactly as a expected.


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