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yppush(8)							     yppush(8)

NAME
       yppush  -  force	 propagation  of a changed Network Information Service
       (NIS) map

SYNOPSIS
       yppush [-d domain] [-v] mapname

OPTIONS
       Specify a domain.  Verbose. This causes messages	 to  be	 printed  when
       each server is called, and for each response. Without this option, only
       error messages are printed.

DESCRIPTION
       The yppush command copies a new version of a Network  Information  Ser‐
       vice  (NIS) map from the master NIS server to the slave NIS servers. It
       is normally run only on the master  NIS	server	by  the	 make  utility
       accessing the /var/yp/Makefile after the master NIS databases have been
       changed. When invoked, yppush first constructs a	 list  of  NIS	server
       hosts  by  reading the NIS map ypservers within the domain. Keys within
       the map ypservers are the ASCII names of the machines on which the  NIS
       servers run.

       A  transfer  map	 request is sent to the NIS server at each host, along
       with the information needed by the transfer agent  (the	program	 which
       actually	 moves	the  map)  to  call  back the yppush command. When the
       attempt has completed (successfully or not), and the transfer agent has
       sent  yppush  a	status	message, the results can be printed to stdout.
       Messages are also printed when a transfer is not possible, for instance
       when  the  request message is undeliverable, or when the timeout period
       on responses has expired.

       Refer to ypfiles(4) and ypserv(8) for an overview of NIS.

RESTRICTIONS
       In the current implementation (version 2 NIS  protocol),	 the  transfer
       agent  is  ypxfr,  which	 is  started by the ypserv program.  If yppush
       detects that it is speaking to a version 1 NIS protocol server, it uses
       the older protocol, sending a version 1 YPPROC_GET request and issues a
       message to that effect. Unfortunately, there is no way of knowing if or
       when  the  map transfer was performed for version 1 servers. The yppush
       command prints a message saying that  an	 old-style  message  has  been
       sent.  The  system  administrator  should  later	 check to see that the
       transfer has actually taken place.

ERRORS
       Map xxx no such map in server's domain -- using ypservers

	      Explanation:

	      This is an informational message that indicates that the	yppush
	      command  will  push  the	maps  to  all  servers	listed	in the
	      ypservers map.

FILES
SEE ALSO
       Commands: ypserv(8), ypxfr(8)

       Files: ypfiles(4)

								     yppush(8)

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