kadmind - KADM5 administration server
kadmind [-x db_args] [-r realm]
[-m] [-nofork] [-proponly] [-port
port-number] [-P pid_file] [-p
kdb5_util_path] [-K kprop_path] [-k
kprop_port] [-F dump_file]
kadmind starts the Kerberos administration server. kadmind
typically runs on the master Kerberos server, which stores the KDC database.
If the KDC database uses the LDAP module, the administration server and the
KDC server need not run on the same machine. kadmind accepts remote requests
from programs such as kadmin(1) and kpasswd(1) to administer the information
in these database.
kadmind requires a number of configuration files to be set up in
order for it to work:
- kdc.conf(5)">kdc.conf(5)">kdc.conf(5)
- The KDC configuration file contains configuration information for the KDC
and admin servers. kadmind uses settings in this file to locate the
Kerberos database, and is also affected by the acl_file,
dict_file, kadmind_port, and iprop-related settings.
- kadm5.acl(5)">kadm5.acl(5)">kadm5.acl(5)
- kadmind's ACL (access control list) tells it which principals are allowed
to perform administration actions. The pathname to the ACL file can be
specified with the acl_file kdc.conf(5) variable; by default, it is
/etc/krb5kdc/kadm5.acl.
After the server begins running, it puts itself in the background
and disassociates itself from its controlling terminal.
kadmind can be configured for incremental database propagation.
Incremental propagation allows replica KDC servers to receive principal and
policy updates incrementally instead of receiving full dumps of the
database. This facility can be enabled in the kdc.conf(5) file with the
iprop_enable option. Incremental propagation requires the principal
kiprop/MASTER\@REALM (where MASTER is the master KDC's canonical host
name, and REALM the realm name). In release 1.13, this principal is
automatically created and registered into the datebase.
- -r realm
- specifies the realm that kadmind will serve; if it is not specified, the
default realm of the host is used.
- -m
- causes the master database password to be fetched from the keyboard
(before the server puts itself in the background, if not invoked with the
-nofork option) rather than from a file on disk.
- -nofork
- causes the server to remain in the foreground and remain associated to the
terminal. In normal operation, you should allow the server to place itself
in the background.
- -proponly
- causes the server to only listen and respond to Kerberos replica
incremental propagation polling requests. This option can be used to set
up a hierarchical propagation topology where a replica KDC provides
incremental updates to other Kerberos replicas.
- -port
port-number
- specifies the port on which the administration server listens for
connections. The default port is determined by the kadmind_port
configuration variable in kdc.conf(5).
- -P pid_file
- specifies the file to which the PID of kadmind process should be written
after it starts up. This file can be used to identify whether kadmind is
still running and to allow init scripts to stop the correct process.
- -p
kdb5_util_path
- specifies the path to the kdb5_util command to use when dumping the KDB in
response to full resync requests when iprop is enabled.
- -K kprop_path
- specifies the path to the kprop command to use to send full dumps to
replicas in response to full resync requests.
- -k kprop_port
- specifies the port by which the kprop process that is spawned by kadmind
connects to the replica kpropd, in order to transfer the dump file during
an iprop full resync request.
- -F dump_file
- specifies the file path to be used for dumping the KDB in response to full
resync requests when iprop is enabled.
- -x db_args
- specifies database-specific arguments. See Database Options in kadmin(1)
for supported arguments.
See kerberos(7) for a description of Kerberos environment
variables.