yppush - force propagation of changed NIS databases
SYNOPSIS
/usr/sbin/yppush [ -d domain ] [ -t timeout ] [ -p # par
rallel jobs ] [ -h host ] [ -v ] mapname ...
DESCRIPTION
yppush copies updated NIS databases (or maps) from the
master NIS server to the slave servers within a NIS
domain. It is normally run only on the NIS master by
/var/yp/Makefile after the master databases are changed.
/var/yp/Makefile does not invoke yppush by default, the
NOPUSH="True" line must be commented out.
yppush first constructs a list of NIS slave servers by
reading the NIS map ypservers within the domain. A desti
nation host (or a list of hosts with multiple -h commands)
can also be specified on the command line. A "transfer
map" request is sent to the NIS serger at each slave,
along with the information needed by the transfer agent
ypxfr(8) to callback to yppush, which may be printed the
result to stderr. Messages are also pritned when a trans
fer isnot possible; for instance when the request message
is undeliverable.
OPTSIONS
-d domain
Specify a particular domain. The NIS domain of the
local host system is used by default. If the local
host's domain name is not set, the domain name must
be specified with this flag.
-t timeout
The timeout flag is used to specify a timeout value
in seconds. This timeout controls how long yppush
will wait for a response from a slave server before
sending a map transfer request to the next slave
server in the list. By default, yppush will wait
90 seconds. For big maps, this is not long enough.
-p # parallel jobs
yppush normally performs transfers serially, mean
ing that it will send a map transfer request to one
slave server and then wait for it to respond before
sending the next map transfer request to the next
slave server. In environments with many slaves, it
is more efficient to initiate several map transfers
at once so that the transfers can take place in
parallel.
-h host
The host flag can be used to transfer a map to a
user-specified machine or group of machines instead
map. A list of hosts can be specified by using mul
tiple instances of the -h flag. -v Verbose mode:
causes yppush to print debugging messages as it
runs. Note specifying this flag twice makes yppush
even more verbose.
SEE ALSO
domainname(1), ypserv(8), ypxfr(8)
BUGS
The mechanism for transferring NIS maps in NIS v1 is dif
ferent that that in NIS version 2. This version of has
support for transferring maps to NIS v2 systems only.
AUTHOR
Thorsten Kukuk <kukuk@suse.de>
Man(1) output converted with
man2html