[CentOS] LDAP TLS error -8023

Tue Mar 31 01:28:12 UTC 2015
Paul R. Ganci <ganci at nurdog.com>

Can somebody tell me what this error means (server, domain etc. changed 
to protect the innocent)?

ldapsearch -H ldap://ldapserv-1.example.com:389 -ZZ -W -D 
cn=Boss,dc=example,dc=com -b dc=example,dc=com uid=testuser homeDirectory
ldap_start_tls: Connect error (-11)
     additional info: TLS error -8023:A PKCS #11 module returned 
CKR_DEVICE_ERROR, indicating that a problem has occurred with the token 
or slot.

My google searches do not seem to provide any useful information. I am 
just looking for some hints as to what to look for in my configuration. 
I just don't know how to interpret this error message. I am sure it is 
trying to tell me something but I just don't know what.

What is really strange is I have a second ldap server which replicates 
with this one. It works fine so I am pretty convinced the problem is not 
with the ldap configuration but rather something with the certificates 
and/or the setup.

Thanks.

-- 
Paul (ganci at nurdog.com)
(303)257-5208