NAME

     iprop, ipropd-master, ipropd-slave — propagate changes to a Heimdal Kerberos master KDC to
     slave KDCs

SYNOPSIS

     ipropd-master [-c string | --config-file=string] [-r string | --realm=string] [-k kspec |
                   --keytab=kspec] [-d file | --database=file] [--slave-stats-file=file]
                   [--time-missing=time] [--time-gone=time] [--detach] [--version] [--help]
     ipropd-slave [-c string | --config-file=string] [-r string | --realm=string] [-k kspec |
                   --keytab=kspec] [--time-lost=time] [--detach] [--version] [--help] master

DESCRIPTION

     ipropd-master is used to propagate changes to a Heimdal Kerberos database from the master
     Kerberos server on which it runs to slave Kerberos servers running ipropd-slave.

     The slaves are specified by the contents of the slaves file in the KDC's database directory,
     e.g. /var/heimdal/slaves.  This has principals one per-line of the form
           iprop/slave@REALM
     where slave is the hostname of the slave server in the given REALM, e.g.
           iprop/kerberos-1.example.com@EXAMPLE.COM
     On a slave, the argument master specifies the hostname of the master server from which to
     receive updates.

     In contrast to hprop(8), which sends the whole database to the slaves regularly, iprop
     normally sends only the changes as they happen on the master.  The master keeps track of all
     the changes by assigning a version number to every change to the database.  The slaves know
     which was the latest version they saw, and in this way it can be determined if they are in
     sync or not.  A log of all the changes is kept on the master.  When a slave is at an older
     version than the oldest one in the log, the whole database has to be sent.

     The changes are propagated over a secure channel (on port 2121 by default).  This should
     normally be defined as “iprop/tcp” in /etc/services or another source of the services
     database.  The master and slaves must each have access to a keytab with keys for the iprop
     service principal on the local host.

     There is a keep-alive feature logged in the master's slave-stats file (e.g.
     /var/heimdal/slave-stats).

     Supported options for ipropd-master:

     -c string, --config-file=string

     -r string, --realm=string

     -k kspec, --keytab=kspec
             keytab to get authentication from

     -d file, --database=file
             Database (default per KDC)

     --slave-stats-file=file
             file for slave status information

     --time-missing=time
             time before slave is polled for presence (default 2 min)

     --time-gone=time
             time of inactivity after which a slave is considered gone (default 5 min)

     --detach
             detach from console

     --version

     --help

     Supported options for ipropd-slave:

     -c string, --config-file=string

     -r string, --realm=string

     -k kspec, --keytab=kspec
             keytab to get authentication from

     --time-lost=time
             time before server is considered lost (default 5 min)

     --detach
             detach from console

     --version

     --help
     Time arguments for the relevant options above may be specified in forms like 5 min, 300 s,
     or simply a number of seconds.

FILES

     slaves, slave-stats in the database directory.

SEE ALSO

     krb5.conf(5), hprop(8), hpropd(8), iprop-log(8), kdc(8).