Index for Section 8

Alphabetical listing for Y

yppush(8)
NAME
  yppush - force propagation of a changed Network Information Service (NIS)
  map

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

DESCRIPTION
  The yppush command copies a new version of a Network Information Service
  (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.

FLAGS
  -d   Specify a domain.

  -v   Verbose.	 This causes messages to be printed when each server is
       called, and for each response.  Without this flag, only error messages
       are printed.

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.

FILES
  /var/yp/domainname/ypservers.{dir, pag}

RELATED INFORMATION
  ypfiles(4), ypserv(8), ypxfr(8)