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.\" Copyright (c) 1996, 1997, 1999, 2001 Thorsten Kukuk <kukuk@suse.de>
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.TH YPSERV 8 "August 2001" "YP Server" ""
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ypxfr - transfer NIS database from remote server to local host
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copies an NIS database from one NIS server to the local host by
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using the NIS service.
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is generally invoked by
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receives a map transfer request from
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It creates a temporary map in the directory
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(this directory must already exist;
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is the default domainname for the local host), fills it by getting
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the map's entries and fetches the map parameters (master and order number).
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If the transfer was successful, the old version of the map will be
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deleted and the temporary copy will be moved into its place.
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will attempt to send a "clear current map" request to the local
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writes its output to stderr.
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However, if it is invoked without a controlling terminal, it will
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log the output to syslog.
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is used primarily in environments where several NIS servers are in use.
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For all maps, you have a NIS master server, which maintains a canonical
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copy of the NIS map, and all the other servers, the NIS slaves, copy
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the new version of the map from the master whenever a update was made.
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Normally, you have one NIS master for all maps.
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In order to maintain consistency across all NIS servers,
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can be run periodically in a
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job. Maps which change infrequently need only be updated once a day
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(preferably late at night when system usage is lowest), where those
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with frequent changes (such as
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should be updated perhaps once every hour.
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.B @YPBINDIR@: ypxfr_1perday, ypxfr_2perday,
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They can serve as reasonable first cuts.
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Normally all updates should be propagated by
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.B @YPMAPDIR@/Makefile
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is run on the NIS master server, however it is a good practice
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on large networks where possible outages could cause NIS slaves to
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fall out of sync with the master.
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The following options are supported:
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Force a map transfer. Normally,
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will not transfer a map if it determines that the NIS master's copy
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is not newer than the existing copy already on the local host. This
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flag forces a transfer regardless of which server's version is more
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Do not send a "clear current map" request to the
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process running on the local host. This flag is normally used when
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is not running locally at the time you are running
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will complain that it cannot talk to the local
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and the transfer will fail.
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Specify a domain other than the default NIS domain.
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.BI \-h " source host"
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regardless of what the map says the master is. If
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service for the name of the master, and tries to get the
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map from there. This option is used to insure that ypxfr only copies
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maps from the NIS master server.
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.BI \-s " source domain"
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Specify a source domain from which to transfer a map that should be the same
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.BI \-C " taskid progam-number ipaddr port"
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process at the host with
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registered as program number
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and waiting for a response to transaction
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Change the directory for the maps to
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\fIyp_path/[domainname]/\fP, the default
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is \fI@YPMAPDIR@/[domainname]\fP.
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One or more names of the map to transfer.
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@YPMAPDIR@/[domainname]/[maps]
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Thorsten Kukuk <kukuk@suse.de>
added
removed
ypserv-2.18/ypxfr/ypxfr.8.in
