openLDAP / Sasl - ldap_sasl_interactive_bind_s: Local error (-2)

Question

I configure openldap with sasl bind.

Trying connect:

# ldapsearch -v -H ldaps:// -Y PLAIN -U name@example.com

But getting error:

ldap_sasl_interactive_bind_s: Local error (-2)

1. I create a config file /etc/sasl2/slapd.conf:

pwcheck_method: auxprop 
mech_list: PLAIN LOGIN CRAM-MD5 DIGEST-MD5 
auxprop_plugin: sasldb 

2. Sample server and client show successful authentication.

# sasl2-sample-server -s sample -h localhost -p 1789 -m PLAIN
# sasl2-sample-client -s sample -p 1789  -m PLAIN localhost

trying 2, 1, 6
trying 10, 1, 6
bind: Address already in use
accepted new connection
forcing use of mechanism PLAIN
send: {5}
PLAIN
waiting for client mechanism...
recv: {5}
PLAIN
recv: {1}
Y
recv: {49}
name@example.com[0]name@example.com[0]xxxxx
negotiation complete
successful authentication 'name@example.com'
closing connection

3. slapd log:

 
Mar 21 18:21:20  slapd[26236]: conn=1062 fd=10 ACCEPT from IP=127.0.0.1:38312 (IP=127.0.0.1:636)
Mar 21 18:21:20  slapd[26236]: conn=1062 fd=10 TLS established tls_ssf=256 ssf=256
Mar 21 18:21:20  slapd[26236]: conn=1062 op=0 UNBIND
Mar 21 18:21:20  slapd[26236]: conn=1062 fd=10 closed