A file that includes an unencrypted list of principals and their keys. Servers retrieve the keys they need from keytab files instead of using kinit. The default keytab file is /etc/krb5.keytab. The KDC administration server, /usr/kerberos/sbin/kadmind, is the only service that uses any other file (it uses /var/kerberos/krb5kdc/kadm5.keytab). kinit The kinit command allows a principal who has already logged in to obtain and cache the initial ticket-granting ticket (TGT). For more information about using the kinit command, refer to its man page.