.\" slave/kpropd.M .\" .\" Copyright 1992, 2008 by the Massachusetts Institute of Technology. .\" .\" Export of this software from the United States of America may .\" require a specific license from the United States Government. .\" It is the responsibility of any person or organization contemplating .\" export to obtain such a license before exporting. .\" .\" WITHIN THAT CONSTRAINT, permission to use, copy, modify, and .\" distribute this software and its documentation for any purpose and .\" without fee is hereby granted, provided that the above copyright .\" notice appear in all copies and that both that copyright notice and .\" this permission notice appear in supporting documentation, and that .\" the name of M.I.T. not be used in advertising or publicity pertaining .\" to distribution of the software without specific, written prior .\" permission. Furthermore if you modify this software you must label .\" your software as modified software and not distribute it in such a .\" fashion that it might be confused with the original M.I.T. software. .\" M.I.T. makes no representations about the suitability of .\" this software for any purpose. It is provided "as is" without express .\" or implied warranty. .\" .\" .TH KPROPD 8 .SH NAME kpropd \- Kerberos V5 slave KDC update server .SH SYNOPSIS .B kpropd [ .B \-r .I realm ] [ .B \-f .I slave_dumpfile ] [ .B \-F .I principal_database ] [ .B \-p .I kdb5_util_prog ] [ .B \-d ] [ .B \-S ] [ .B \-P .I port ] .br .SH DESCRIPTION The .I kpropd command runs on the slave KDC server. It listens for update requests made by the .IR kprop (8) program, and periodically requests incremental updates from the master KDC. When the slave receives a kprop request from the master, .I kpropd accepts the dumped KDC database and places it in a file, and then runs .IR kdb5_util (8) to load the dumped database into the active database which is used by .IR krb5kdc (8). Thus, the master Kerberos server can use .IR kprop (8) to propagate its database to the slave slavers. Upon a successful download of the KDC database file, the slave Kerberos server will have an up-to-date KDC database. .PP Normally, kpropd is invoked out of .I inetd(8). This is done by adding a line to the inetd.conf file which looks like this: kprop stream tcp nowait root /usr/sbin/kpropd kpropd However, kpropd can also run as a standalone deamon, if the .B \-S option is turned on. This is done for debugging purposes, or if for some reason the system administrator just doesn't want to run it out of .IR inetd (8). When the slave periodically requests incremental updates, .I kpropd updates its .I principal.ulog file with any updates from the master. .IR kproplog (8) can be used to view a summary of the update entry log on the slave KDC. Incremental propagation is not enabled by default; it can be enabled using the .I iprop_enable and .I iprop_slave_poll settings in .IR kdc.conf (5). The principal "kiprop/slavehostname@REALM" (where "slavehostname" is the name of the slave KDC host, and "REALM" is the name of the Kerberos realm) must be present in the slave's keytab file. .SH OPTIONS .TP \fB\-r\fP \fIrealm\fP specifies the realm of the master server; by default the realm returned by .IR krb5_default_local_realm (3) is used. .TP \fB\-f\fP \fIfile\fP specifies the filename where the dumped principal database file is to be stored; by default the dumped database file is KPROPD_DEFAULT_FILE (normally /var/db/krb5kdc/from_master). .TP .B \-p allows the user to specify the pathname to the .IR kdb5_util (8) program; by default the pathname used is KPROPD_DEFAULT_KDB5_UTIL (normally /usr/sbin/kdb5_util). .TP .B \-S turn on standalone mode. Normally, kpropd is invoked out of .IR inetd (8) so it expects a network connection to be passed to it from .I inetd (8). If the .B \-S option is specified, kpropd will put itself into the background, and wait for connections to the KPROP_SERVICE port (normally krb5_prop). .TP .B \-d turn on debug mode. In this mode, if the .B \-S option is selected, .I kpropd will not detach itself from the current job and run in the background. Instead, it will run in the foreground and print out debugging messages during the database propagation. .TP .B \-P allow for an alternate port number for .I kpropd to listen on. This is only useful if the program is run in standalone mode. .TP .B \-a allows the user to specify the path to the kpropd.acl file; by default the path used is KPROPD_ACL_FILE (normally /var/db/krb5kdc/kpropd.acl). .SH FILES .TP "\w'kpropd.acl\ \ 'u" kpropd.acl Access file for .BR kpropd ; the default location is KPROPD_ACL_FILE (normally /var/db/krb5kdc/kpropd.acl). Each entry is a line containing the principal of a host from which the local machine will allow Kerberos database propagation via kprop. .SH SEE ALSO kprop(8), kdb5_util(8), krb5kdc(8), inetd(8)