yppush - force propagation of a changed Network Information Service (NIS)
yppush [-d domain] [-v] mapname
-d Specify a domain.
-v Verbose. This causes messages to be printed when each server is called,
and for each response. Without this option, only error messages are
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 nor-
mally 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 com-
pleted (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 mes-
sage is undeliverable, or when the timeout period on responses has expired.
Refer to ypfiles(4) and ypserv(8) for an overview of NIS.
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 proto-
col, 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 adminis-
trator should later check to see that the transfer has actually taken
+ Map xxx no such map in server's domain -- using ypservers
This is an informational message that indicates that the yppush com-
mand will push the maps to all servers listed in the ypservers map.
Commands: ypserv(8), ypxfr(8)