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40 .Nd "force propagation of updated NIS databases"
45 .Op Fl j Ar #parallel jobs
53 utility distributes updated NIS databases (or
55 from an NIS master server to NIS slave servers within an NIS
57 It is normally only run on the NIS master by
59 whenever any of the NIS maps are updated.
66 entry in the Makefile must first be commented out
69 configuration assumes a small network with only
70 a single NIS server; in such a configuration,
76 determines the names of the slave servers for a domain by searching the
78 map. A destination host (or a list of hosts) can also be manually
79 specified on the command line.
80 Once it has a complete list of slave servers, it sends a 'map transfer'
81 request to each slave, which in turn reads a copy of the map from
82 the master NIS server using
84 Included within each request is the name of the map to be copied
85 and some special information required by
87 to successfully 'callback' to
89 and carry out the transfer.
94 via callback will be printed to stderr.
96 The following options are available:
97 .Bl -tag -width indent
99 Specify a particular domain.
101 the local host system is used by default.
102 If the local host's domain
103 name is not set, the domain name must be specified with this flag.
105 Specify a timeout value in seconds.
109 will wait for a response from a slave server before sending a
110 map transfer request to the next slave server in its list.
111 .It Fl j Ar #parallel jobs
114 utility normally performs transfers serially, meaning that it will
115 send a map transfer request to one slave server and then wait for
116 it to respond before moving on to the next slave server.
118 with many slaves, it is more efficient to initiate several map transfers
119 at once so that the transfers can take place in parallel.
122 flag is used to specify the desired number of parallel jobs:
124 will initiate the specified number of transfers immediately and
125 listen for responses.
126 If the number of specified parallel jobs is
127 less than the number of slave servers,
129 will initiate only the number of specified jobs and then wait
130 for some of them to finish before starting any more.
134 handles callbacks asynchronously, which means that it will collect
135 and display the callback information received from
137 as soon as it arrives, even it arrives before all of the map
138 transfer requests have been sent.
140 Can be used to transfer a map to a user-specified machine or
141 group of machines instead of the list of servers contained in
144 map. A list of hosts can be specified by using multiple
151 expects all the local NIS maps to be stored under
155 flag can be used to specify an alternate path in the event that
156 the system administrator decides to store the NIS maps somewhere else.
158 Verbose mode: it causes
160 to print debugging messages as it runs.
161 Specifying this flag twice
167 .Bl -tag -width Pa -compact
168 .It Pa /var/yp/[domainname]/ypservers
169 the NIS ypservers map containing the names of all servers in
170 a particular NIS domain
177 .An Bill Paul Aq wpaul@ctr.columbia.edu
179 The mechanism for transferring NIS maps in NIS v1 is different
180 than that in NIS version 2. This version of
182 has support for transferring maps to NIS v2 systems only.