K5SRVUTIL(8) Maintenance Commands and Procedures K5SRVUTIL(8)

NAME

k5srvutil - host key table (keytab) manipulation utility

SYNOPSIS

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

DESCRIPTION

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:

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


change
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.


delold
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.


delete
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.

OPTIONS

The following options are supported:

-f filename
Specify a keytab file other than the default file,
/etc/krb5/krb5.keytab.


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


-k
Displays old and new keys when using the change
operand.

ATTRIBUTES

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


+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Interface Stability | Committed |
+--------------------+-----------------+

SEE ALSO

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

July 25, 2015 K5SRVUTIL(8)