It is helpful to test from a client machine other than the server itself. To set up a client, it has to have the same entries in /etc/hosts (or have a DNS server set up). In this example, make sure there is a line like the following:
Next, a client needs to have krb5-clients installed. You should set up krb5-clients the same way as you did with the server. In our example, use TEST.ORG as the realm, and krbsvr as the name of the admin server and KDC server.