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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/