I actually thought that my certificate was bad, until I went back to 2.3
with the same certificate and configuration and it worked fine. Quanah
pointed out the new TLS related syncrepl options which, when I added
them to my config, fixed the problem. Thing is, I pointed the syncrepl
options to the same certificate I am using for the TLS* server
certificate directives. I am using a compound certificate, so my TLS
related config looks like this:
In 2.4, if you configure syncrepl over TLS and omit the new options,
does OpenLDAP use the values that are configured for the server
certificate settings (TLS*), if any? If so, I'm confused as to why it
failed for me originally.
Behalf Of Howard Chu
Sent: Thursday, February 26, 2009 4:30 PM
To: Worgan, Craig (BVW:9T16)
Subject: Re: Single-master replication over TLS fails in 2.4.15
Craig Worgan wrote:
I am trying to upgrade from 2.3.42 to 2.4.15 and my setup uses
single-master replication over TLS. When I do the upgrade I have
noticed that replication fails. I have reproduced the problem in my
lab, using a single server and multiple slapd instances, and I get the
following error on the slave:
[root@otm-hp11 cnd]# ./slapd -f slapdSlave.conf -d sync -h
@(#) $OpenLDAP: slapd 2.4.15 (Feb 25 2009 22:27:30) $
bdb_db_open: warning - no DB_CONFIG file found in directory
Expect poor performance for suffix "dc=Nortel,dc=com".
TLS certificate verification: Error, self signed certificate in
TLS: can't connect: error:14090086:SSL
routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed.
ldap_sasl_bind_s failed (-1)
do_syncrepl: rid=983 retrying (4 retries left)
The corresponding trace on the master is:
TLS: can't accept: error:14094418:SSL
routines:SSL3_READ_BYTES:tlsv1 alert unknown ca.
Sounds like you didn't configure a TLSCACertificateFile on the consumer.
Based on the error messages, I thought that there was a problem with
the certificates I am using, but when I revert the slapd executable to
the old 2.3.42 version, replication succeeds. Were more stringent CA
checks added between 2.3.42 and 2.4.15? Note that the same OpenSSL
version was used to build both slapd executables (0.9.8b). Also, the
same configuration options were used to build both versions.
-- Howard Chu
CTO, Symas Corp. http://www.symas.com
Director, Highland Sun http://highlandsun.com/hyc/
Chief Architect, OpenLDAP http://www.openldap.org/project/