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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 Fl Fl config-file= Ns Ar string Xc Oc
68 .Oo Fl r Ar string \*(Ba Xo Fl Fl realm= Ns Ar string Xc Oc
69 .Oo Fl d Ar file \*(Ba Xo Fl Fl database= Ns Ar file Xc Oc
70 .Oo Fl k Ar kspec \*(Ba Xo Fl Fl keytab= Ns Ar kspec Xc Oc
71 .Op Fl Fl statusfile= Ns Ar file
72 .Op Fl Fl hostname= Ns Ar hostname
73 .Op Fl Fl port= Ns Ar port
74 .Op Fl Fl time-lost= Ns Ar time
82 is used to propagate changes to a Heimdal Kerberos database from the
83 master Kerberos server on which it runs to slave Kerberos servers
87 The slaves are specified by the contents of the
89 file in the KDC's database directory, e.g.\&
90 .Pa /var/heimdal/slaves .
91 This has principals one per-line of the form
92 .Dl iprop/ Ns Ar slave Ns @ Ns Ar REALM
95 is the hostname of the slave server in the given
98 .Dl iprop/kerberos-1.example.com@EXAMPLE.COM
99 On a slave, the argument
101 specifies the hostname of the master server from which to receive updates.
105 which sends the whole database to the slaves regularly,
107 normally sends only the changes as they happen on the master.
108 The master keeps track of all the changes by assigning a version
109 number to every transaction to the database.
110 The slaves know which was the latest version they saw, and in this
111 way it can be determined if they are in sync or not.
112 A log of all the transactions is kept on the master.
113 When a slave is at an older version than the oldest one in the log,
114 the whole database has to be sent.
116 The log of transactions is also used to implement a two-phase commit
117 (with roll-forward for recovery) method of updating the HDB.
118 Transactions are first recorded in the log, then in the HDB, then
119 the log is updated to mark the transaction as committed.
121 The changes are propagated over a secure channel (on port 2121 by
123 This should normally be defined as
127 or another source of the services database.
128 The master and slaves
129 must each have access to a keytab with keys for the
131 service principal on the local host.
133 There is a keep-alive feature logged in the master's
136 .Pa /var/heimdal/slave-stats ) .
138 Note that hierarchical replication is supported by running
141 on the same KDC as an
144 Supported options for
147 .It Fl c Ar string , Fl Fl config-file= Ns Ar string
148 .It Fl r Ar string , Fl Fl realm= Ns Ar string
149 .It Fl k Ar kspec , Fl Fl keytab= Ns Ar kspec
150 Keytab for authenticating
153 .It Fl d Ar file , Fl Fl database= Ns Ar file
154 Database (default per KDC)
155 .It Fl Fl slave-stats-file= Ns Ar file
156 File for slave status information.
157 .It Fl Fl time-missing= Ns Ar time
158 Time before slave is polled for presence (default 2 min).
159 .It Fl Fl time-gone= Ns Ar time
160 Time of inactivity after which a slave is considered gone (default 5 min).
167 Supported options for
170 .It Fl c Ar string , Fl Fl config-file= Ns Ar string
171 .It Fl r Ar string , Fl Fl realm= Ns Ar string
172 .It Fl d Ar file , Fl Fl database= Ns Ar file
173 Database (default per KDC)
174 .It Fl k Ar kspec , Fl Fl keytab= Ns Ar kspec
175 Keytab with client credentials for authenticating to
177 .It Fl Fl status-file= Ns Ar file
178 .It Fl Fl hostname= Ns Ar hostname
179 Hostname for client principal if different from actual hostname.
180 .It Fl Fl port= Ns Ar port
181 .It Fl Fl time-lost= Ns Ar time
182 time before server is considered lost (default 5 min)
184 Use asynchronous writes.
185 This is very useful for very busy sites or sites with very large
192 Time arguments for the relevant options above may be specified in forms
193 like 5 min, 300 s, or simply a number of seconds.
197 in the database directory.
198 .Pa ipropd-master.pid ,
200 in the database directory, or in the directory named by the
202 environment variable.