From Univention Wiki
This Guide describes how to include CentOS 6.2 in an UCS 3.0 Domain. It only shows the diverging points from the standard CentOS installation.
Inclusion in the Management System
To include the System in the UDM add it as a Member server. This ensures that the proper accounts will be added for the Client.
Further it is necessary to add the IP of the CentOS System to the variable to
on your DC Master and Backups.
During the Installation you should choose one of your UCS Domain Controllers as the ntp Timeserver. Additional you should configure the hostname for the Server and not rely on the DHCP offered one.
First the needed PAM modules need to be installed:
yum install openldap openldap-clients nss_ldap krb5-libs krb5-workstation
Afterwards LDAP and Kerberos need to be enabled:
authconfig --enablekrb5 --krb5kdc=<DC> --krb5realm=<REALM> --krb5adminserver=<DC> --enablecache --update authconfig --enableldapauth --ldapserver=<DC>:7389 --ldapbasedn=<base DN> --disableldaptls --ldaploadcacert=https://<DC Master>/ucs-root-ca.crt --update
thereby you can use any DC for DC. The base DN can be found on a DC using the command
ucr get ldap/base
Afterwards you should be able to log into your CentOS System