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28 .\" $FreeBSD: src/usr.sbin/yppush/yppush.8,v 1.18 2005/01/18 20:02:45 ru Exp $
35 .Nd "force propagation of updated NIS databases"
40 .Op Fl j Ar #parallel jobs
48 utility distributes updated NIS databases (or
50 from an NIS master server to NIS slave servers within an NIS
52 It is normally only run on the NIS master by
54 whenever any of the NIS maps are updated.
61 entry in the Makefile must first be commented out
64 configuration assumes a small network with only
65 a single NIS server; in such a configuration,
71 determines the names of the slave servers for a domain by searching the
74 A destination host (or a list of hosts) can also be manually
75 specified on the command line.
76 Once it has a complete list of slave servers, it sends a 'map transfer'
77 request to each slave, which in turn reads a copy of the map from
78 the master NIS server using
80 Included within each request is the name of the map to be copied
81 and some special information required by
83 to successfully 'callback' to
85 and carry out the transfer.
90 via callback will be printed to stderr.
92 The following options are available:
93 .Bl -tag -width indent
95 Specify a particular domain.
97 the local host system is used by default.
98 If the local host's domain
99 name is not set, the domain name must be specified with this flag.
101 Specify a timeout value in seconds.
105 will wait for a response from a slave server before sending a
106 map transfer request to the next slave server in its list.
107 .It Fl j Ar #parallel jobs
110 utility normally performs transfers serially, meaning that it will
111 send a map transfer request to one slave server and then wait for
112 it to respond before moving on to the next slave server.
114 with many slaves, it is more efficient to initiate several map transfers
115 at once so that the transfers can take place in parallel.
118 flag is used to specify the desired number of parallel jobs:
120 will initiate the specified number of transfers immediately and
121 listen for responses.
122 If the number of specified parallel jobs is
123 less than the number of slave servers,
125 will initiate only the number of specified jobs and then wait
126 for some of them to finish before starting any more.
130 handles callbacks asynchronously, which means that it will collect
131 and display the callback information received from
133 as soon as it arrives, even it arrives before all of the map
134 transfer requests have been sent.
136 Can be used to transfer a map to a user-specified machine or
137 group of machines instead of the list of servers contained in
141 A list of hosts can be specified by using multiple
148 expects all the local NIS maps to be stored under
152 flag can be used to specify an alternate path in the event that
153 the system administrator decides to store the NIS maps somewhere else.
155 Verbose mode: it causes
157 to print debugging messages as it runs.
158 Specifying this flag twice
164 .Bl -tag -width Pa -compact
165 .It Pa /var/yp/[domainname]/ypservers
166 the NIS ypservers map containing the names of all servers in
167 a particular NIS domain
174 .An Bill Paul Aq Mt wpaul@ctr.columbia.edu
176 The mechanism for transferring NIS maps in NIS v1 is different
177 than that in NIS version 2.
180 has support for transferring maps to NIS v2 systems only.