K5SRVUTIL(8) Maintenance Procedures K5SRVUTIL(8)


k5srvutil - host key table (keytab) manipulation utility


/usr/sbin/k5srvutil operation [-ik] [-f filename]


The k5srvutil command allows a system manager to list or change keys
currently in his keytab or to add new keys to the keytab.

The operand operation must be one of the following:

Lists the keys in a keytab, showing version number and
principal name.

Changes all the keys in the keytab to new randomly-generated
keys, updating the keys in the Kerberos server's database to
match those by using the kadmin protocol. If a key's version
number does not match the version number stored in the Kerberos
server's database, the operation fails. The old keys are
retained so that existing tickets continue to work. If the -i
flag is specified, k5srvutil prompts for yes or no before
changing each key. If the -k option is used, the old and new
keys are displayed.

Deletes keys that are not the most recent version from the
keytab. This operation should be used at some point after a
change operation to remove old keys. If the -i flag is
specified, k5srvutil asks the user whether the old keys
associated with each principal should be removed.

Deletes particular keys in the keytab, interactively prompting
for each key.

In all cases, the default keytab file is /etc/krb5/krb5.keytab unless
overridden by the -f option.

k5srvutil uses the kadmin(8) program to edit the keytab in place.
However, old keys are retained, so they are available in case of failure.


The following options are supported:

-f filename
Specify a keytab file other than the default file,

Prompts user before changing keys when using the change or
delold operands.

Displays old and new keys when using the change operand.


See attributes(7) for descriptions of the following attributes:

|Interface Stability | Committed |


ktutil(1), attributes(7), kadmin(8)

July 25, 2015 K5SRVUTIL(8)