RESOLVER(5) Domain/OS BSD RESOLVER(5)
NAME
resolver - resolver configuration file
SYNOPSIS
/etc/resolv.conf
DESCRIPTION
The resolver configuration file contains information that is read by the
resolver routines the first time they are invoked by a process. The file
is designed to be human readable and contains a list of name-value pairs
that provide various types of resolver information.
On a normally configured system this file should not be necessary. The
only name server to be queried will be on the local machine and the
domain name is retrieved from the system.
The different configuration options are
nameserver Followed by the Internet address (in dot notation) of a name
server that the resolver should query. At least one name
server should be listed. Up to MAXNS (currently 3) name
servers may be listed, in that case the resolver library
queries tries them in the order listed. If no nameserver
entries are present, the default is to use the name server
on the local machine. (The algorithm used is to try a name
server, and if the query times out, try the next, until out
of name servers, then repeat trying all the name servers
until a maximum number of retries are made).
domain Followed by a domain name, that is the default domain to
append to names that do not have a dot in them. If no
domain entries are present, the domain returned by
gethostname(2) is used (everything after the first ".").
Finally, if the host name does not contain a domain part,
the root domain is assumed.
The name value pair must appear on a single line, and the keyword (e.g.
nameserver) must start the line. The value follows the keyword,
separated by white space.
FILES
/etc/resolv.conf
SEE ALSO
gethostbyname(3N), resolver(3), named(8)
Name Server Operations Guide for BIND