The exact location for the entries needs to be between the "database caoperations" section" and the next section which starts "database services". For example, if your file reads as follows:
#######################################################################
# ldbm database definitions
#######################################################################
database caoperations
suffix "o=ca,o=services"
sslonly 1
http-publish-host www.acme.com
http-publish-port 447
database services
suffix o=services
database acl
suffix o=acl
Then this would be modified to read:
#######################################################################
# ldbm database definitions
#######################################################################
database caoperations
suffix "o=ca,o=services"
sslonly 1
http-publish-host www.acme.com
http-publish-port 447
database krsoperations
suffix "o=krs,o=services"
sslonly 1
operatorsNeeded 2
operatorsTotal 3
database services
suffix o=services
database acl
suffix o=acl
For more information, see the solution regarding
[XrcXUDADUNABLE]: unable to contact directory server.