Follow the below mentioned steps to enable LDAP authentication for unmanaged clusters:
- Open Cloudera Manager Admin Console, click Hive in the list of components, and then select the Configuration tab.
 
- Type "ldap" in the Search box to locate the LDAP configuration fields.
 
- Check Enable LDAP Authentication.
 
- Enter LDAP URL.
 
- Enter the Active Directory Domain for your environment.
 
- Click Save Changes.