.. _kadmin(1):

kadmin
======

SYNOPSIS
--------

.. _kadmin_synopsis:

**kadmin**
[**-O**\|\ **-N**]
[**-r** *realm*]
[**-p** *principal*]
[**-q** *query*]
[[**-c** *cache_name*]\|[**-k** [**-t** *keytab*]]\|\ **-n**]
[**-w** *password*]
[**-s** *admin_server*\ [:*port*]]

**kadmin.local**
[**-r** *realm*]
[**-p** *principal*]
[**-q** *query*]
[**-d** *dbname*]
[**-e** *enc*:*salt* ...]
[**-m**]
[**-x** *db_args*]

.. _kadmin_synopsis_end:


DESCRIPTION
-----------

kadmin and kadmin.local are command-line interfaces to the Kerberos V5
administration system.  They provide nearly identical functionalities;
the difference is that kadmin.local directly accesses the KDC
database, while kadmin performs operations using :ref:`kadmind(8)`.
Except as explicitly noted otherwise, this man page will use "kadmin"
to refer to both versions.  kadmin provides for the maintenance of
Kerberos principals, password policies, and service key tables
(keytabs).

The remote kadmin client uses Kerberos to authenticate to kadmind
using the service principal ``kadmin/ADMINHOST`` (where *ADMINHOST* is
the fully-qualified hostname of the admin server) or ``kadmin/admin``.
If the credentials cache contains a ticket for one of these
principals, and the **-c** credentials_cache option is specified, that
ticket is used to authenticate to kadmind.  Otherwise, the **-p** and
**-k** options are used to specify the client Kerberos principal name
used to authenticate.  Once kadmin has determined the principal name,
it requests a service ticket from the KDC, and uses that service
ticket to authenticate to kadmind.

Since kadmin.local directly accesses the KDC database, it usually must
be run directly on the master KDC with sufficient permissions to read
the KDC database.  If the KDC database uses the LDAP database module,
kadmin.local can be run on any host which can access the LDAP server.


OPTIONS
-------

.. _kadmin_options:

**-r** *realm*
    Use *realm* as the default database realm.

**-p** *principal*
    Use *principal* to authenticate.  Otherwise, kadmin will append
    ``/admin`` to the primary principal name of the default ccache,
    the value of the **USER** environment variable, or the username as
    obtained with getpwuid, in order of preference.

**-k**
    Use a keytab to decrypt the KDC response instead of prompting for
    a password.  In this case, the default principal will be
    ``host/hostname``.  If there is no keytab specified with the
    **-t** option, then the default keytab will be used.

**-t** *keytab*
    Use *keytab* to decrypt the KDC response.  This can only be used
    with the **-k** option.

**-n**
    Requests anonymous processing.  Two types of anonymous principals
    are supported.  For fully anonymous Kerberos, configure PKINIT on
    the KDC and configure **pkinit_anchors** in the client's
    :ref:`krb5.conf(5)`.  Then use the **-n** option with a principal
    of the form ``@REALM`` (an empty principal name followed by the
    at-sign and a realm name).  If permitted by the KDC, an anonymous
    ticket will be returned.  A second form of anonymous tickets is
    supported; these realm-exposed tickets hide the identity of the
    client but not the client's realm.  For this mode, use ``kinit
    -n`` with a normal principal name.  If supported by the KDC, the
    principal (but not realm) will be replaced by the anonymous
    principal.  As of release 1.8, the MIT Kerberos KDC only supports
    fully anonymous operation.

**-c** *credentials_cache*
    Use *credentials_cache* as the credentials cache.  The
    cache should contain a service ticket for the ``kadmin/ADMINHOST``
    (where *ADMINHOST* is the fully-qualified hostname of the admin
    server) or ``kadmin/admin`` service; it can be acquired with the
    :ref:`kinit(1)` program.  If this option is not specified, kadmin
    requests a new service ticket from the KDC, and stores it in its
    own temporary ccache.

**-w** *password*
    Use *password* instead of prompting for one.  Use this option with
    care, as it may expose the password to other users on the system
    via the process list.

**-q** *query*
    Perform the specified query and then exit.  This can be useful for
    writing scripts.

**-d** *dbname*
    Specifies the name of the KDC database.  This option does not
    apply to the LDAP database module.

**-s** *admin_server*\ [:*port*]
    Specifies the admin server which kadmin should contact.

**-m**
    If using kadmin.local, prompt for the database master password
    instead of reading it from a stash file.

**-e** "*enc*:*salt* ..."
    Sets the keysalt list to be used for any new keys created.  See
    :ref:`Keysalt_lists` in :ref:`kdc.conf(5)` for a list of possible
    values.

**-O**
    Force use of old AUTH_GSSAPI authentication flavor.

**-N**
    Prevent fallback to AUTH_GSSAPI authentication flavor.

**-x** *db_args*
    Specifies the database specific arguments.  See the next section
    for supported options.

.. _kadmin_options_end:

.. _dboptions:

DATABASE OPTIONS
----------------

Database options can be used to override database-specific defaults.
Supported options for the DB2 module are:

    **-x dbname=**\ \*filename*
        Specifies the base filename of the DB2 database.

    **-x lockiter**
        Make iteration operations hold the lock for the duration of
        the entire operation, rather than temporarily releasing the
        lock while handling each principal.  This is the default
        behavior, but this option exists to allow command line
        override of a [dbmodules] setting.  First introduced in
        release 1.13.

    **-x unlockiter**
        Make iteration operations unlock the database for each
        principal, instead of holding the lock for the duration of the
        entire operation.  First introduced in release 1.13.

Supported options for the LDAP module are:

    **-x host=**\ *ldapuri*
        Specifies the LDAP server to connect to by a LDAP URI.

    **-x binddn=**\ *bind_dn*
        Specifies the DN used to bind to the LDAP server.

    **-x bindpwd=**\ *password*
        Specifies the password or SASL secret used to bind to the LDAP
        server.  Using this option may expose the password to other
        users on the system via the process list; to avoid this,
        instead stash the password using the **stashsrvpw** command of
        :ref:`kdb5_ldap_util(8)`.

    **-x sasl_mech=**\ *mechanism*
        Specifies the SASL mechanism used to bind to the LDAP server.
        The bind DN is ignored if a SASL mechanism is used.  New in
        release 1.13.

    **-x sasl_authcid=**\ *name*
        Specifies the authentication name used when binding to the
        LDAP server with a SASL mechanism, if the mechanism requires
        one.  New in release 1.13.

    **-x sasl_authzid=**\ *name*
        Specifies the authorization name used when binding to the LDAP
        server with a SASL mechanism.  New in release 1.13.

    **-x sasl_realm=**\ *realm*
        Specifies the realm used when binding to the LDAP server with
        a SASL mechanism, if the mechanism uses one.  New in release
        1.13.

    **-x debug=**\ *level*
        sets the OpenLDAP client library debug level.  *level* is an
        integer to be interpreted by the library.  Debugging messages
        are printed to standard error.  New in release 1.12.


COMMANDS
--------

When using the remote client, available commands may be restricted
according to the privileges specified in the :ref:`kadm5.acl(5)` file
on the admin server.

.. _add_principal:

add_principal
~~~~~~~~~~~~~

    **add_principal** [*options*] *newprinc*

Creates the principal *newprinc*, prompting twice for a password.  If
no password policy is specified with the **-policy** option, and the
policy named ``default`` is assigned to the principal if it exists.
However, creating a policy named ``default`` will not automatically
assign this policy to previously existing principals.  This policy
assignment can be suppressed with the **-clearpolicy** option.

This command requires the **add** privilege.

Aliases: **addprinc**, **ank**

Options:

**-expire** *expdate*
    (:ref:`getdate` string) The expiration date of the principal.

**-pwexpire** *pwexpdate*
    (:ref:`getdate` string) The password expiration date.

**-maxlife** *maxlife*
    (:ref:`getdate` string) The maximum ticket life for the principal.

**-maxrenewlife** *maxrenewlife*
    (:ref:`getdate` string) The maximum renewable life of tickets for
    the principal.

**-kvno** *kvno*
    The initial key version number.

**-policy** *policy*
    The password policy used by this principal.  If not specified, the
    policy ``default`` is used if it exists (unless **-clearpolicy**
    is specified).

**-clearpolicy**
    Prevents any policy from being assigned when **-policy** is not
    specified.

{-\|+}\ **allow_postdated**
    **-allow_postdated** prohibits this principal from obtaining
    postdated tickets.  **+allow_postdated** clears this flag.

{-\|+}\ **allow_forwardable**
    **-allow_forwardable** prohibits this principal from obtaining
    forwardable tickets.  **+allow_forwardable** clears this flag.

{-\|+}\ **allow_renewable**
    **-allow_renewable** prohibits this principal from obtaining
    renewable tickets.  **+allow_renewable** clears this flag.

{-\|+}\ **allow_proxiable**
    **-allow_proxiable** prohibits this principal from obtaining
    proxiable tickets.  **+allow_proxiable** clears this flag.

{-\|+}\ **allow_dup_skey**
    **-allow_dup_skey** disables user-to-user authentication for this
    principal by prohibiting this principal from obtaining a session
    key for another user.  **+allow_dup_skey** clears this flag.

{-\|+}\ **requires_preauth**
    **+requires_preauth** requires this principal to preauthenticate
    before being allowed to kinit.  **-requires_preauth** clears this
    flag.  When **+requires_preauth** is set on a service principal,
    the KDC will only issue service tickets for that service principal
    if the client's initial authentication was performed using
    preauthentication.

{-\|+}\ **requires_hwauth**
    **+requires_hwauth** requires this principal to preauthenticate
    using a hardware device before being allowed to kinit.
    **-requires_hwauth** clears this flag.  When **+requires_hwauth** is
    set on a service principal, the KDC will only issue service tickets
    for that service principal if the client's initial authentication was
    performed using a hardware device to preauthenticate.

{-\|+}\ **ok_as_delegate**
    **+ok_as_delegate** sets the **okay as delegate** flag on tickets
    issued with this principal as the service.  Clients may use this
    flag as a hint that credentials should be delegated when
    authenticating to the service.  **-ok_as_delegate** clears this
    flag.

{-\|+}\ **allow_svr**
    **-allow_svr** prohibits the issuance of service tickets for this
    principal.  **+allow_svr** clears this flag.

{-\|+}\ **allow_tgs_req**
    **-allow_tgs_req** specifies that a Ticket-Granting Service (TGS)
    request for a service ticket for this principal is not permitted.
    **+allow_tgs_req** clears this flag.

{-\|+}\ **allow_tix**
    **-allow_tix** forbids the issuance of any tickets for this
    principal.  **+allow_tix** clears this flag.

{-\|+}\ **needchange**
    **+needchange** forces a password change on the next initial
    authentication to this principal.  **-needchange** clears this
    flag.

{-\|+}\ **password_changing_service**
    **+password_changing_service** marks this principal as a password
    change service principal.

{-\|+}\ **ok_to_auth_as_delegate**
    **+ok_to_auth_as_delegate** allows this principal to acquire
    forwardable tickets to itself from arbitrary users, for use with
    constrained delegation.

{-\|+}\ **no_auth_data_required**
    **+no_auth_data_required** prevents PAC or AD-SIGNEDPATH data from
    being added to service tickets for the principal.

**-randkey**
    Sets the key of the principal to a random value.

**-nokey**
    Causes the principal to be created with no key.  New in release
    1.12.

**-pw** *password*
    Sets the password of the principal to the specified string and
    does not prompt for a password.  Note: using this option in a
    shell script may expose the password to other users on the system
    via the process list.

**-e** *enc*:*salt*,...
    Uses the specified keysalt list for setting the keys of the
    principal.  See :ref:`Keysalt_lists` in :ref:`kdc.conf(5)` for a
    list of possible values.

**-x** *db_princ_args*
    Indicates database-specific options.  The options for the LDAP
    database module are:

    **-x dn=**\ *dn*
        Specifies the LDAP object that will contain the Kerberos
        principal being created.

    **-x linkdn=**\ *dn*
        Specifies the LDAP object to which the newly created Kerberos
        principal object will point.

    **-x containerdn=**\ *container_dn*
        Specifies the container object under which the Kerberos
        principal is to be created.

    **-x tktpolicy=**\ *policy*
        Associates a ticket policy to the Kerberos principal.

    .. note::

        - The **containerdn** and **linkdn** options cannot be
          specified with the **dn** option.
        - If the *dn* or *containerdn* options are not specified while
          adding the principal, the principals are created under the
          principal container configured in the realm or the realm
          container.
        - *dn* and *containerdn* should be within the subtrees or
          principal container configured in the realm.

Example::

    kadmin: addprinc jennifer
    WARNING: no policy specified for "jennifer@ATHENA.MIT.EDU";
    defaulting to no policy.
    Enter password for principal jennifer@ATHENA.MIT.EDU:
    Re-enter password for principal jennifer@ATHENA.MIT.EDU:
    Principal "jennifer@ATHENA.MIT.EDU" created.
    kadmin:

.. _add_principal_end:

.. _modify_principal:

modify_principal
~~~~~~~~~~~~~~~~

    **modify_principal** [*options*] *principal*

Modifies the specified principal, changing the fields as specified.
The options to **add_principal** also apply to this command, except
for the **-randkey**, **-pw**, and **-e** options.  In addition, the
option **-clearpolicy** will clear the current policy of a principal.

This command requires the *modify* privilege.

Alias: **modprinc**

Options (in addition to the **addprinc** options):

**-unlock**
    Unlocks a locked principal (one which has received too many failed
    authentication attempts without enough time between them according
    to its password policy) so that it can successfully authenticate.

.. _modify_principal_end:

.. _rename_principal:

rename_principal
~~~~~~~~~~~~~~~~

    **rename_principal** [**-force**] *old_principal* *new_principal*

Renames the specified *old_principal* to *new_principal*.  This
command prompts for confirmation, unless the **-force** option is
given.

This command requires the **add** and **delete** privileges.

Alias: **renprinc**

.. _rename_principal_end:

.. _delete_principal:

delete_principal
~~~~~~~~~~~~~~~~

    **delete_principal** [**-force**] *principal*

Deletes the specified *principal* from the database.  This command
prompts for deletion, unless the **-force** option is given.

This command requires the **delete** privilege.

Alias: **delprinc**

.. _delete_principal_end:

.. _change_password:

change_password
~~~~~~~~~~~~~~~

    **change_password** [*options*] *principal*

Changes the password of *principal*.  Prompts for a new password if
neither **-randkey** or **-pw** is specified.

This command requires the **changepw** privilege, or that the
principal running the program is the same as the principal being
changed.

Alias: **cpw**

The following options are available:

**-randkey**
    Sets the key of the principal to a random value.

**-pw** *password*
    Set the password to the specified string.  Using this option in a
    script may expose the password to other users on the system via
    the process list.

**-e** *enc*:*salt*,...
    Uses the specified keysalt list for setting the keys of the
    principal.  See :ref:`Keysalt_lists` in :ref:`kdc.conf(5)` for a
    list of possible values.

**-keepold**
    Keeps the existing keys in the database.  This flag is usually not
    necessary except perhaps for ``krbtgt`` principals.

Example::

    kadmin: cpw systest
    Enter password for principal systest@BLEEP.COM:
    Re-enter password for principal systest@BLEEP.COM:
    Password for systest@BLEEP.COM changed.
    kadmin:

.. _change_password_end:

.. _purgekeys:

purgekeys
~~~~~~~~~

    **purgekeys** [**-all**\|\ **-keepkvno** *oldest_kvno_to_keep*] *principal*

Purges previously retained old keys (e.g., from **change_password
-keepold**) from *principal*.  If **-keepkvno** is specified, then
only purges keys with kvnos lower than *oldest_kvno_to_keep*.  If
**-all** is specified, then all keys are purged.  The **-all** option
is new in release 1.12.

This command requires the **modify** privilege.

.. _purgekeys_end:

.. _get_principal:

get_principal
~~~~~~~~~~~~~

    **get_principal** [**-terse**] *principal*

Gets the attributes of principal.  With the **-terse** option, outputs
fields as quoted tab-separated strings.

This command requires the **inquire** privilege, or that the principal
running the the program to be the same as the one being listed.

Alias: **getprinc**

Examples::

    kadmin: getprinc tlyu/admin
    Principal: tlyu/admin@BLEEP.COM
    Expiration date: [never]
    Last password change: Mon Aug 12 14:16:47 EDT 1996
    Password expiration date: [none]
    Maximum ticket life: 0 days 10:00:00
    Maximum renewable life: 7 days 00:00:00
    Last modified: Mon Aug 12 14:16:47 EDT 1996 (bjaspan/admin@BLEEP.COM)
    Last successful authentication: [never]
    Last failed authentication: [never]
    Failed password attempts: 0
    Number of keys: 2
    Key: vno 1, des-cbc-crc
    Key: vno 1, des-cbc-crc:v4
    Attributes:
    Policy: [none]

    kadmin: getprinc -terse systest
    systest@BLEEP.COM   3    86400     604800    1
    785926535 753241234 785900000
    tlyu/admin@BLEEP.COM     786100034 0    0
    kadmin:

.. _get_principal_end:

.. _list_principals:

list_principals
~~~~~~~~~~~~~~~

    **list_principals** [*expression*]

Retrieves all or some principal names.  *expression* is a shell-style
glob expression that can contain the wild-card characters ``?``,
``*``, and ``[]``.  All principal names matching the expression are
printed.  If no expression is provided, all principal names are
printed.  If the expression does not contain an ``@`` character, an
``@`` character followed by the local realm is appended to the
expression.

This command requires the **list** privilege.

Alias: **listprincs**, **get_principals**, **get_princs**

Example::

    kadmin:  listprincs test*
    test3@SECURE-TEST.OV.COM
    test2@SECURE-TEST.OV.COM
    test1@SECURE-TEST.OV.COM
    testuser@SECURE-TEST.OV.COM
    kadmin:

.. _list_principals_end:

.. _get_strings:

get_strings
~~~~~~~~~~~

    **get_strings** *principal*

Displays string attributes on *principal*.

This command requires the **inquire** privilege.

Alias: **getstr**

.. _get_strings_end:

.. _set_string:

set_string
~~~~~~~~~~

    **set_string** *principal* *name* *value*

Sets a string attribute on *principal*.  String attributes are used to
supply per-principal configuration to the KDC and some KDC plugin
modules.  The following string attribute names are recognized by the
KDC:

**session_enctypes**
    Specifies the encryption types supported for session keys when the
    principal is authenticated to as a server.  See
    :ref:`Encryption_types` in :ref:`kdc.conf(5)` for a list of the
    accepted values.

**otp**
    Enables One Time Passwords (OTP) preauthentication for a client
    *principal*.  The *value* is a JSON string representing an array
    of objects, each having optional ``type`` and ``username`` fields.

This command requires the **modify** privilege.

Alias: **setstr**

Example::

    set_string host/foo.mit.edu session_enctypes aes128-cts
    set_string user@FOO.COM otp [{"type":"hotp","username":"custom"}]

.. _set_string_end:

.. _del_string:

del_string
~~~~~~~~~~

    **del_string** *principal* *key*

Deletes a string attribute from *principal*.

This command requires the **delete** privilege.

Alias: **delstr**

.. _del_string_end:

.. _add_policy:

add_policy
~~~~~~~~~~

    **add_policy** [*options*] *policy*

Adds a password policy named *policy* to the database.

This command requires the **add** privilege.

Alias: **addpol**

The following options are available:

**-maxlife** *time*
    (:ref:`getdate` string) Sets the maximum lifetime of a password.

**-minlife** *time*
    (:ref:`getdate` string) Sets the minimum lifetime of a password.

**-minlength** *length*
    Sets the minimum length of a password.

**-minclasses** *number*
    Sets the minimum number of character classes required in a
    password.  The five character classes are lower case, upper case,
    numbers, punctuation, and whitespace/unprintable characters.

**-history** *number*
    Sets the number of past keys kept for a principal.  This option is
    not supported with the LDAP KDC database module.

.. _policy_maxfailure:

**-maxfailure** *maxnumber*
    Sets the number of authentication failures before the principal is
    locked.  Authentication failures are only tracked for principals
    which require preauthentication.  The counter of failed attempts
    resets to 0 after a successful attempt to authenticate.  A
    *maxnumber* value of 0 (the default) disables lockout.

.. _policy_failurecountinterval:

**-failurecountinterval** *failuretime*
    (:ref:`getdate` string) Sets the allowable time between
    authentication failures.  If an authentication failure happens
    after *failuretime* has elapsed since the previous failure,
    the number of authentication failures is reset to 1.  A
    *failuretime* value of 0 (the default) means forever.

.. _policy_lockoutduration:

**-lockoutduration** *lockouttime*
    (:ref:`getdate` string) Sets the duration for which the principal
    is locked from authenticating if too many authentication failures
    occur without the specified failure count interval elapsing.
    A duration of 0 (the default) means the principal remains locked
    out until it is administratively unlocked with ``modprinc
    -unlock``.

**-allowedkeysalts**
    Specifies the key/salt tuples supported for long-term keys when
    setting or changing a principal's password/keys.  See
    :ref:`Keysalt_lists` in :ref:`kdc.conf(5)` for a list of the
    accepted values, but note that key/salt tuples must be separated
    with commas (',') only.  To clear the allowed key/salt policy use
    a value of '-'.

Example::

    kadmin: add_policy -maxlife "2 days" -minlength 5 guests
    kadmin:

.. _add_policy_end:

.. _modify_policy:

modify_policy
~~~~~~~~~~~~~

    **modify_policy** [*options*] *policy*

Modifies the password policy named *policy*.  Options are as described
for **add_policy**.

This command requires the **modify** privilege.

Alias: **modpol**

.. _modify_policy_end:

.. _delete_policy:

delete_policy
~~~~~~~~~~~~~

    **delete_policy** [**-force**] *policy*

Deletes the password policy named *policy*.  Prompts for confirmation
before deletion.  The command will fail if the policy is in use by any
principals.

This command requires the **delete** privilege.

Alias: **delpol**

Example::

    kadmin: del_policy guests
    Are you sure you want to delete the policy "guests"?
    (yes/no): yes
    kadmin:

.. _delete_policy_end:

.. _get_policy:

get_policy
~~~~~~~~~~

    **get_policy** [ **-terse** ] *policy*

Displays the values of the password policy named *policy*.  With the
**-terse** flag, outputs the fields as quoted strings separated by
tabs.

This command requires the **inquire** privilege.

Alias: getpol

Examples::

    kadmin: get_policy admin
    Policy: admin
    Maximum password life: 180 days 00:00:00
    Minimum password life: 00:00:00
    Minimum password length: 6
    Minimum number of password character classes: 2
    Number of old keys kept: 5
    Reference count: 17

    kadmin: get_policy -terse admin
    admin     15552000  0    6    2    5    17
    kadmin:

The "Reference count" is the number of principals using that policy.
With the LDAP KDC database module, the reference count field is not
meaningful.

.. _get_policy_end:

.. _list_policies:

list_policies
~~~~~~~~~~~~~

    **list_policies** [*expression*]

Retrieves all or some policy names.  *expression* is a shell-style
glob expression that can contain the wild-card characters ``?``,
``*``, and ``[]``.  All policy names matching the expression are
printed.  If no expression is provided, all existing policy names are
printed.

This command requires the **list** privilege.

Aliases: **listpols**, **get_policies**, **getpols**.

Examples::

    kadmin:  listpols
    test-pol
    dict-only
    once-a-min
    test-pol-nopw

    kadmin:  listpols t*
    test-pol
    test-pol-nopw
    kadmin:

.. _list_policies_end:

.. _ktadd:

ktadd
~~~~~

    | **ktadd** [options] *principal*
    | **ktadd** [options] **-glob** *princ-exp*

Adds a *principal*, or all principals matching *princ-exp*, to a
keytab file.  Each principal's keys are randomized in the process.
The rules for *princ-exp* are described in the **list_principals**
command.

This command requires the **inquire** and **changepw** privileges.
With the **-glob** form, it also requires the **list** privilege.

The options are:

**-k[eytab]** *keytab*
    Use *keytab* as the keytab file.  Otherwise, the default keytab is
    used.

**-e** *enc*:*salt*,...
    Uses the specified keysalt list for setting the new keys of the
    principal.  See :ref:`Keysalt_lists` in :ref:`kdc.conf(5)` for a
    list of possible values.

**-q**
    Display less verbose information.

**-norandkey**
    Do not randomize the keys. The keys and their version numbers stay
    unchanged.  This option is only available in kadmin.local, and
    cannot be specified in combination with the **-e** option.

An entry for each of the principal's unique encryption types is added,
ignoring multiple keys with the same encryption type but different
salt types.

Example::

    kadmin: ktadd -k /tmp/foo-new-keytab host/foo.mit.edu
    Entry for principal host/foo.mit.edu@ATHENA.MIT.EDU with kvno 3,
         encryption type aes256-cts-hmac-sha1-96 added to keytab
         FILE:/tmp/foo-new-keytab
    kadmin:

.. _ktadd_end:

.. _ktremove:

ktremove
~~~~~~~~

    **ktremove** [options] *principal* [*kvno* | *all* | *old*]

Removes entries for the specified *principal* from a keytab.  Requires
no permissions, since this does not require database access.

If the string "all" is specified, all entries for that principal are
removed; if the string "old" is specified, all entries for that
principal except those with the highest kvno are removed.  Otherwise,
the value specified is parsed as an integer, and all entries whose
kvno match that integer are removed.

The options are:

**-k[eytab]** *keytab*
    Use *keytab* as the keytab file.  Otherwise, the default keytab is
    used.

**-q**
    Display less verbose information.

Example::

    kadmin: ktremove kadmin/admin all
    Entry for principal kadmin/admin with kvno 3 removed from keytab
         FILE:/etc/krb5.keytab
    kadmin:

.. _ktremove_end:

lock
~~~~

Lock database exclusively.  Use with extreme caution!  This command
only works with the DB2 KDC database module.

unlock
~~~~~~

Release the exclusive database lock.

list_requests
~~~~~~~~~~~~~

Lists available for kadmin requests.

Aliases: **lr**, **?**

quit
~~~~

Exit program.  If the database was locked, the lock is released.

Aliases: **exit**, **q**


HISTORY
-------

The kadmin program was originally written by Tom Yu at MIT, as an
interface to the OpenVision Kerberos administration program.


SEE ALSO
--------

:ref:`kpasswd(1)`, :ref:`kadmind(8)`
