ypset(1M) — ADMINISTRATOR COMMANDS
NAME
ypset − point ypbind at a particular server
SYNOPSIS
/usr/sbin/ypset [ −d ypdomain ] [ −h host ] server
DESCRIPTION
In order to run ypset, ypbind must be initiated with the −ypset or −ypsetme options. See ypserv(1M). 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 is not discovered until the NIS client process tries to get a binding for the domain. At this point, the binding set by ypset will be tested by ypbind. If the binding is invalid, ypbind will attempt to rebind for the same domain.
ypset is useful for binding a client node which is not on a broadcast net, or is on a broadcast net which is not running the NIS server host. It also is useful for debugging NIS client applications, for instance where the NIS map only exists at a single NIS server host.
In cases where several hosts on the local net are supplying NIS services, it is possible for ypbind to rebind to another host even while you attempt to find out if the ypset operation succeeded. For example, you can type:
# ypset host1
# ypwhich
host2
which can be confusing. This 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, gets the binding.
server indicates the NIS server to bind to, and must be specified as a name. This will work 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 ypbind over a datagram transport first. Datagram Transports are recommended for higher performance. The NIS library calls, yp_enum(), yp_all(), yp_next(), and yp_first() use circuit transports regardless of the “main” transport being used.
Refer to ypfiles(4) and ypserv(1M) for an overview of the NIS name service.
The following options are available:
−h host Set ypbind’s binding on host, instead of locally. host must be specified as a name.
−d ypdomain Use ypdomain, instead of the default domain.