3 .\" Copyright (c) 2005 Kungliga Tekniska Högskolan
4 .\" (Royal Institute of Technology, Stockholm, Sweden).
5 .\" All rights reserved.
7 .\" Redistribution and use in source and binary forms, with or without
8 .\" modification, are permitted provided that the following conditions
11 .\" 1. Redistributions of source code must retain the above copyright
12 .\" notice, this list of conditions and the following disclaimer.
14 .\" 2. Redistributions in binary form must reproduce the above copyright
15 .\" notice, this list of conditions and the following disclaimer in the
16 .\" documentation and/or other materials provided with the distribution.
18 .\" 3. Neither the name of the Institute nor the names of its contributors
19 .\" may be used to endorse or promote products derived from this software
20 .\" without specific prior written permission.
22 .\" THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
23 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 .\" ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
26 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
41 .Nd propagate transactions from a Heimdal Kerberos master KDC to slave KDCs
44 .Oo Fl c Ar string \*(Ba Xo
45 .Fl Fl config-file= Ns Ar string
48 .Oo Fl r Ar string \*(Ba Xo
49 .Fl Fl realm= Ns Ar string
52 .Oo Fl k Ar kspec \*(Ba Xo
53 .Fl Fl keytab= Ns Ar kspec
56 .Oo Fl d Ar file \*(Ba Xo
57 .Fl Fl database= Ns Ar file
60 .Op Fl Fl slave-stats-file= Ns Ar file
61 .Op Fl Fl time-missing= Ns Ar time
62 .Op Fl Fl time-gone= Ns Ar time
67 .Oo Fl c Ar string \*(Ba Xo
68 .Fl Fl config-file= Ns Ar string
71 .Oo Fl r Ar string \*(Ba Xo
72 .Fl Fl realm= Ns Ar string
75 .Oo Fl k Ar kspec \*(Ba Xo
76 .Fl Fl keytab= Ns Ar kspec
79 .Op Fl Fl time-lost= Ns Ar time
86 is used to propagate changes to a Heimdal Kerberos database from the
87 master Kerberos server on which it runs to slave Kerberos servers
91 The slaves are specified by the contents of the
93 file in the KDC's database directory, e.g.\&
94 .Pa /var/heimdal/slaves .
95 This has principals one per-line of the form
96 .Dl iprop/ Ns Ar slave Ns @ Ns Ar REALM
99 is the hostname of the slave server in the given
102 .Dl iprop/kerberos-1.example.com@EXAMPLE.COM
103 On a slave, the argument
105 specifies the hostname of the master server from which to receive updates.
109 which sends the whole database to the slaves regularly,
111 normally sends only the changes as they happen on the master.
112 The master keeps track of all the changes by assigning a version
113 number to every transaction to the database.
114 The slaves know which was the latest version they saw, and in this
115 way it can be determined if they are in sync or not.
116 A log of all the transactions is kept on the master.
117 When a slave is at an older version than the oldest one in the log,
118 the whole database has to be sent.
120 The log of transactions is also used to implement a two-phase commit
121 (with roll-forward for recovery) method of updating the HDB.
122 Transactions are first recorded in the log, then in the HDB, then
123 the log is updated to mark the transaction as committed.
125 The changes are propagated over a secure channel (on port 2121 by
127 This should normally be defined as
131 or another source of the services database.
132 The master and slaves
133 must each have access to a keytab with keys for the
135 service principal on the local host.
137 There is a keep-alive feature logged in the master's
140 .Pa /var/heimdal/slave-stats ) .
142 Supported options for
145 .It Fl c Ar string , Fl Fl config-file= Ns Ar string
146 .It Fl r Ar string , Fl Fl realm= Ns Ar string
147 .It Fl k Ar kspec , Fl Fl keytab= Ns Ar kspec
148 keytab to get authentication from
149 .It Fl d Ar file , Fl Fl database= Ns Ar file
150 Database (default per KDC)
151 .It Fl Fl slave-stats-file= Ns Ar file
152 file for slave status information
153 .It Fl Fl time-missing= Ns Ar time
154 time before slave is polled for presence (default 2 min)
155 .It Fl Fl time-gone= Ns Ar time
156 time of inactivity after which a slave is considered gone (default 5 min)
163 Supported options for
166 .It Fl c Ar string , Fl Fl config-file= Ns Ar string
167 .It Fl r Ar string , Fl Fl realm= Ns Ar string
168 .It Fl k Ar kspec , Fl Fl keytab= Ns Ar kspec
169 keytab to get authentication from
170 .It Fl Fl time-lost= Ns Ar time
171 time before server is considered lost (default 5 min)
177 Time arguments for the relevant options above may be specified in forms
178 like 5 min, 300 s, or simply a number of seconds.
182 in the database directory.
183 .Pa ipropd-master.pid ,
185 in the database directory, or in the directory named by the
187 environment variable.