yppush(1M)yppush(1M)NAMEyppush - force propagation of Network Information Service database
SYNOPSIS
domain] host] maxm] mint] mapname
Remarks
The Network Information Service (NIS) was formerly known as Yellow
Pages (YP). Although the name has changed, the functionality of the
service remains the same.
DESCRIPTION
copies a Network Information Service (NIS) map (database), mapname,
from the map's master NIS server to each slave NIS server. It is usu‐
ally executed only on the master NIS server by shell script which is
run either after changes are made to one or more of the master's NIS
databases or when the NIS databases are first created. See ypmake(1M)
and ypinit(1M) for more information on these processes.
constructs a list of NIS server host names by reading the NIS map
within the domain. Keys within the map are the host names of the
machines on which the NIS servers run. then sends a "transfer map"
request to the NIS server at each host, along with the information
needed by the transfer agent (the program that actually moves the map)
to call back
When the transfer attempt is complete, whether successful or not, and
the transfer agent sends a status message, the results can be printed
to standard output. Messages are printed when a transfer is not possi‐
ble, such as when the request message is undeliverable or when the
timeout period on responses expires.
Refer to ypfiles(4) and ypserv(1M) for an overview of Network Informa‐
tion Service.
Options
recognizes the following options:
Copy mapname to the NIS servers in domain rather than to
the domain returned by (see domainname(1)).
Propagate the map(s) only to the specified host.
Attempt to run
maxm transfers in parallel to as many servers simul‐
taneously. Without the option, attempts to transfer
a map to each server, one at a time. When a network
has many servers, such serial transfers can result
in long delays to complete all transfers. A maxm
value greater than 1 reduces total transfer time
through better utilization of CPU time at the mas‐
ter. maxm can be any value from 1 through the num‐
ber of NIS servers in the domain.
Set the minimum timeout value to
mint seconds. When transferring to one slave at a
time, waits up to 80 seconds for the transfer to
complete, after which it begins transferring to the
next slave. When multiple parallel transfers are
attempted by use of the option, it may be necessary
to set the transfer timeout limit to a value larger
than the default 80 seconds to prevent timeouts
caused by network delays related to parallel trans‐
fers.
Verbose mode:
messages are printed when each server is called and
when each response is received. If this option is
omitted, only error messages are printed.
WARNINGS
In the current implementation (Version 2 NIS protocol), the transfer
agent is ypxfr(1M) which is started by the ypserv(1M) program at
yppush's request (see ypxfr(1M) and ypserv(1M)).
Starting with ONCplus version B.11.31.02, the NIS Version 1 protocol is
no longer available.
AUTHOR
was developed by Sun Microsystems, Inc.
FILES
SEE ALSO
domainname(1), ypserv(1M), ypxfr(1M), ypfiles(4).
yppush(1M)
