Administering Platform LSF - SAS

Host Naming
Host Naming
Network addresses
Official host name
Host name aliases
Host name services
Digital UNIX
Solaris
Other UNIX
platforms
For more information
LSF needs to match host names with the corresponding Internet host
addresses.
LSF looks up host names and addresses the following ways:
◆ In the /etc/hosts file
◆ Sun Network Information Service/Yellow Pages (NIS or YP)
◆ Internet Domain Name Service (DNS).
DNS is also known as the Berkeley Internet Name Domain (BIND) or
named, which is the name of the BIND daemon.
Each host is configured to use one or more of these mechanisms.
Each host has one or more network addresses; usually one for each network
to which the host is directly connected. Each host can also have more than one
name.
The first name configured for each address is called the official name.
Other names for the same host are called aliases.
LSF uses the configured host naming system on each host to look up the
official host name for any alias or host address. This means that you can use
aliases as input to LSF, but LSF always displays the official name.
On Digital Unix systems, the /etc/svc.conf file controls which host name
service is used.
On Solaris systems, the /etc/nsswitch.conf file controls the name service.
On other UNIX platforms, the following rules apply:
◆ If your host has an /etc/resolv.conf file, your host is using DNS for
name lookups
◆ If the command ypcat hosts prints out a list of host addresses and
names, your system is looking up names in NIS
◆ Otherwise, host names are looked up in the /etc/hosts file
The man pages for the gethostbyname function, the ypbind and named
daemons, the resolver functions, and the hosts, svc.conf,
nsswitch.conf, and resolv.conf files explain host name lookups in more
detail.
88
Administering Platform LSF