Before you install the Kerberos service, you must resolve several configuration issues. Although you can change the configuration after the initial install, some changes can be difficult to implement. In addition, some changes require that the KDC be rebuilt, so consider long-term goals before you deploy Kerberos.
Deploying a Kerberos infrastructure involves such tasks as installing KDCs, creating keys for your hosts, and migrating users. Reconfiguring a Kerberos deployment can be as hard as performing an initial deployment, so plan a deployment carefully to avoid having to reconfigure.