When a user develops big data applications and runs them in an MRS cluster that supports Kerberos authentication, the user needs to prepare a Machine-machine user authentication file for accessing the MRS cluster. The keytab file in the authentication file can be used for user authentication.
This section describes how to download a Machine-machine user authentication file and export the keytab file on MRS Manager.
Before you download a Human-machine user authentication file, change the password for the user on MRS Manager to make the initial password set by the administrator invalid. Otherwise, the exported keytab file cannot be used. For details, see Changing the Password of an Operation User.