YPSET(8) Maintenance Commands and Procedures YPSET(8)
NAME
ypset - point ypbind at a particular server
SYNOPSIS
/usr/sbin/ypset [
-d ypdomain] [
-h host]
serverDESCRIPTION
In order to run
ypset,
ypbind must be initiated with the
-ypset or
-ypsetme options. See
ypbind(8).
ypset tells
ypbind to get NIS
services for the specified
ypdomain from the
ypserv process running
on
server. If
server is down, or is not running
ypserv, this might
not be discovered until an NIS client process tries to obtain a
binding for the domain. At this point, the binding set by
ypset is
tested by
ypbind. If the binding is invalid,
ypbind attempts to
rebind for the same domain.
ypset is useful for binding a client node that is not on a broadcast
net, or is on a broadcast net that is not running an NIS server host.
It is also useful for debugging NIS client applications, for
instance, where an NIS map exists only at a single NIS server host.
Where several hosts on the local net are supplying NIS services,
ypbind can rebind to another host, even while you attempt to find out
if the
ypset operation succeeded. For example, if you enter the
ypset command below, you might get the subsequent response from
ypwhich:
example% ypset host1
example% ypwhich
host2
The sequence shown above is a function of the NIS subsystem's attempt
to load-balance among the available NIS servers, and occurs when
host1 does not respond to
ypbind because it is not running
ypserv (or
is overloaded), and
host2, running
ypserv, obtains the binding.
server indicates which NIS server to bind to, and must be specified
as a name or an IP address. This works only if the node has a current
valid binding for the domain in question and
ypbind has been set to
allow use of
ypset. In most cases,
server should be specified as an
IP address.
ypset tries to bind over a connectionless transport. The NIS library
call,
yp_all(), uses connection-oriented transport and derives the
NIS server's address based on the connectionless address supplied by
ypset.
Refer to
ypfiles(5) for an overview of the NIS name service.
OPTIONS
-d ypdomain Use
ypdomain, instead of the default domain.
-h host Set
ypbind's binding on
host, instead of locally.
Specify
host as a name.
SEE ALSO
ypwhich(1),
ypfiles(5),
attributes(7) September 14, 1992 YPSET(8)
