AD Intergration with Cent OS 6

Linux and Unix-Like Red Hat
1

Hello,

I am integration AD authentication to Cent OS 6 servers. I am running to this error when I tried to join with AD server.

error message :


# net ads join -U 504783
Host is not configured as a member server.
Invalid configuration.  Exiting....
Failed to join domain: This operation is only allowed for the PDC of the doma        in.
#

configuration file of samba smb.conf under [global] is updated with this info.

workgroup = ctab
realm = CTAB.ALPHA.COM
security = ads
idmap uid = 7000-500000
idmap gid = 7000-500000
template shell = /bin/bash
template homedir = /home/%U
winbind use default domain = true
winbind offline logon = false
winbind nss info = rfc2307
idmap config TRD:backend = ad
idmap config TRD:defauly = yes
idmap config TRD:range = 70000-500000
idmap config TRD:schema_mode = rfc2307
server string = Samba Server Version %y

I have updated krb5.conf as this


#more /etc/krb5.conf
[logging]
 default = FILE:/var/log/krb5libs.log
 kdc = FILE:/var/log/krb5kdc.log
 admin_server = FILE:/var/log/kadmind.log

[libdefaults]
 default_realm = CTAB.ALPHA.COM
 dns_lookup_realm = false
 dns_lookup_kdc = false
 ticket_lifetime = 24h
 renew_lifetime = 7d
 forwardable = true

[realms]
 CTLAB.ALPHA.COM = {
  kdc = ctab.alpha.com
  admin_server = ctab.alpha.com
 }

[domain_realm]
 .ctab.alpha.com = CTLAB.ALPHA.COM
 ctab.alpha.com = CTLAB.ALPHA.COM
#

I wasnt able to fix it can someone please suggest it.

Thanks,
Kartheek.