Kent Nasveschuk wrote:
Hello,
I'm having a problem with OpenLDAP using Heimdal Kerberos via the {K5KEY} entry in userPassword. The problem is with the second KDC, works fine on the master LDAP/KDC just not the second one.
Some info: This is an OpenLDAP server with Heimdal storing Kerberos stuff in LDAP. Master (mbauth01) Slave (mblauth02) OSs: CentOS5 OpenLDAP 2.3.39 Heimdal 1.0.1
On the second KDC I can use kadmin -l and do klist -l Princ and get results fine, so I know that the KDC can talk to the LDAP backend via ldapi.
I don't think it is acls because I removed all and get the same result.
From a remote machine if I search the master:
ldapsearch -Z -x -h mblauth01.mbl.edu -b ou=users,dc=mbl,dc=edu -D cn=<some user>,ou=users,dc=mbl,dc=edu -w <krb5 password> cn=<user> cn
I get results
From a remote machine if I search the slave:
ldapsearch -Z -x -h mblauth02.mbl.edu -b ou=users,dc=mbl,dc=edu -D cn=<some user>,ou=users,dc=mbl,dc=edu -w <krb5 password> cn=<user> cn
I get: ldap_bind: Invalid credentials (49)
It doesn't look like the mechanism in LDAP that refers userPassword with {K5KEY} to KDC is working on the slave machine. A couple things might cause this to fail.
The K5KEY mechanism doesn't refer any requests to any KDC. It directly processes Kerberos data that a KDC has stored in LDAP.
The {K5KEY} entry never made it from the Master to the slave via syncrepl. I verified that the entries are there. I also changed a password using kadmin cpw and verified that the change was replicated to the slave and they were.
Any suggestions on how to troubleshoot this or get it working.
Yes. Reread the smbk5pwd/README file.
Your slave slapd.conf is missing the "overlay smbk5pwd" statement.
Couple things about slapd.conf. I added write access to ldapi which should be read on the slave. The password-hash directive not quite sure what that should be set at. On the master it works fine with this omitted.
slapd.conf on slave:
include /opt/openldap-2.3.39/etc/openldap/schema/core.schema include /opt/openldap-2.3.39/etc/openldap/schema/cosine.schema include /opt/openldap-2.3.39/etc/openldap/schema/inetorgperson.schema include /opt/openldap-2.3.39/etc/openldap/schema/nis.schema include /opt/openldap-2.3.39/etc/openldap/schema/autofs.schema include /opt/openldap-2.3.39/etc/openldap/schema/samba.schema include /opt/openldap-2.3.39/etc/openldap/schema/RADIUS-LDAPv3.schema include /opt/openldap-2.3.39/etc/openldap/schema/hdb.schema #include /opt/openldap-2.3.39/etc/openldap/schema/rfc822.schema include /opt/openldap-2.3.39/etc/openldap/schema/qmail.schema include /opt/openldap-2.3.39/etc/openldap/schema/mblPerson.schema
schemacheck on sasl-realm MBL.EDU sasl-host mblauth02.mbl.edu sasl-authz-policy both sasl-regexp "uidNumber=0\\ +gidNumber=.*,cn=peercred,cn=external,cn=auth" "cn=admin,ou=users,dc=mbl,dc=edu" # logLevel 128(ACL proc) + 32(search filter) + 64(config proc) # loglevel 256(stats log connections/operations/results) + 8 (connection mamangement) #loglevel 288 loglevel 64 allow bind_v2
#modulepath /opt/openldap-2.3.39/libexec/openldap moduleload /opt/openldap-2.3.39/lib/smbk5pwd.la pidfile /opt/openldap-2.3.39/var/run/slapd.pid argsfile /opt/openldap-2.3.39/var/run/slapd.args password-hash {CLEARTEXT} {SSHA} {CRYPT}
####################################################################### # ldbm and/or bdb database definitions #######################################################################
database hdb suffix "dc=mbl,dc=edu" rootdn "cn=admin,ou=users,dc=mbl,dc=edu" rootpw "secret" directory /opt/openldap-2.3.39/var/openldap-data
syncrepl rid=111 provider=ldaps://mblauth01.mbl.edu:636 type=refreshAndPersist interval=00:00:01:00 scope sub searchbase="dc=mbl,dc=edu" bindmethod=simple updatedn="uid=syncrepl,ou=Users,dc=mbl,dc=edu" binddn="uid=syncrepl,ou=Users,dc=mbl,dc=edu" credentials=secret updateref ldaps://mblauth01.mbl.edu:636
index objectClass eq index cn pres,sub,eq index sn pres,sub,eq index givenName pres,sub,eq index uid pres,sub,eq index sambaPrimaryGroupSID eq index sambaSID eq index sambaDomainName eq index uidnumber eq index gidNumber eq index sambaHomePath eq index entryUUID eq index automountinformation eq index proxNumber eq index krb5PrincipalName,krb5PrincipalRealm eq index memberUid eq index default sub
limits dn.exact="uid=Devicemgr,ou=users,dc=mbl,dc=edu" size=unlimited time=unlimited limits dn.exact="uid=syncrepl,ou=users,dc=mbl,dc=edu" size=unlimited time=unlimited limits dn.exact="uid=onecard,ou=users,dc=mbl,dc=edu" size=unlimited time=unlimited
access to dn.subtree="ou=users,dc=mbl,dc=edu" attrs=userPassword,sambaNTPassword,sambaLMPassword,proxNumber,employeeNumber by self read by sockurl.exact=ldapi:/// write by dn="uid=syncrepl,ou=users,dc=mbl,dc=edu" write by dn="cn=proxy,ou=users,dc=mbl,dc=edu" read by dn="uid=search,ou=users,dc=mbl,dc=edu" read by group.exact="cn=sysadmins,ou=SystemGroups,ou=Groups,dc=mbl,dc=edu" read by anonymous auth by * none
access to dn.subtree="ou=users,dc=mbl,dc=edu" attrs=krb5key,krb5EncryptionType,krb5PasswordEnd,krb5KeyVersionNumber,krb5ValidEnd by sockurl.exact=ldapi:/// write by dn="cn=proxy,ou=users,dc=mbl,dc=edu" read by dn="uid=syncrepl,ou=users,dc=mbl,dc=edu" write by dn="uid=search,ou=users,dc=mbl,dc=edu" read by group.exact="cn=sysadmins,ou=SystemGroups,ou=Groups,dc=mbl,dc=edu" read by self read by * none
access to dn.subtree="ou=Groups,dc=mbl,dc=edu" by sockurl.exact=ldapi:/// write by dn="uid=syncrepl,ou=users,dc=mbl,dc=edu" write by dn="uid=search,ou=users,dc=mbl,dc=edu" read by dn="cn=proxy,ou=users,dc=mbl,dc=edu" read by group.exact="cn=sysadmins,ou=SystemGroups,ou=Groups,dc=mbl,dc=edu" read by anonymous auth by users read by * none
access to dn.subtree="ou=Devices,ou=Network,dc=mbl,dc=edu" by sockurl.exact=ldapi:/// write by dn="uid=syncrepl,ou=users,dc=mbl,dc=edu" write by dn="uid=search,ou=users,dc=mbl,dc=edu" read by group.exact="cn=sysadmins,ou=SystemGroups,ou=Groups,dc=mbl,dc=edu" read by group.exact="cn=mac_admins,ou=SystemGroups,ou=Groups,dc=mbl,dc=edu" read by anonymous auth by self read by * none
access to dn.subtree="ou=Servers,ou=Network,dc=mbl,dc=edu" by sockurl.exact=ldapi:/// write by dn="uid=syncrepl,ou=users,dc=mbl,dc=edu" write by dn="uid=search,ou=users,dc=mbl,dc=edu" read by group.exact="cn=sysadmins,ou=SystemGroups,ou=Groups,dc=mbl,dc=edu" read by anonymous auth by self read by * none
access to dn.subtree="ou=Computers,ou=Network,dc=mbl,dc=edu" by sockurl.exact=ldapi:/// write by dn="uid=syncrepl,ou=users,dc=mbl,dc=edu" write by dn="uid=search,ou=users,dc=mbl,dc=edu" read by group.exact="cn=sysadmins,ou=SystemGroups,ou=Groups,dc=mbl,dc=edu" read by anonymous auth by self read by * none access to * by sockurl.exact=ldapi:/// write by self read by dn="cn=proxy,ou=users,dc=mbl,dc=edu" read by dn="uid=syncrepl,ou=users,dc=mbl,dc=edu" write by group.exact="cn=sysadmins,ou=SystemGroups,ou=Groups,dc=mbl,dc=edu" read by users read by * none
TLSCipherSuite HIGH:MEDIUM:LOW:+SSLv2+TLSv1 # CA cert file TLSCACertificateFile /opt/openldap-2.3.39/etc/openldap/cacert.pem # Signed cert file TLSCertificateFile /opt/openldap-2.3.39/etc/openldap/newcert.pem # Private key TLSCertificateKeyFile /opt/openldap-2.3.39/etc/openldap/newkey.pem