- domain
Enter the default domain name. This string will
be appended to queries passed to the local DNS server. The default
names should be written without a trailing dot:
domain india.hp.com
It is important to get the syntax correct as the resolver
does not report errors. If more than one instance of the domain
keyword is present, the last instance will override. To specify
multiple domains for an unqualified name lookup, use the search
directive.
- search
The search directive is optional but overrides the
domain directive for specifying which domains should be searched
for unqualified host name lookups. You should add a search entry
if users on a system commonly try to connect to nodes in another
domain. The format is the search directive followed by up to six
domains, separated by a white space.
search cup.hp.com hp.com
- nameserver
The nameserver directive tells the resolver the
IP address of a name server to query. For example, the line:
nameserver 15.32.17.2
instructs the resolver to send queries to the name server
running at IP address 15.32.17.2
instead of the local host.
The resolver will also allow you to specify up to three name
servers using multiple nameserver directives. They will be tried
in the order in which they appear in the RESLVCNF file, only passing
to the next listed nameserver if the previous one is not responding.
Note that the resolver will only query subsequent name servers if
there is no response, if the previous nameserver has already replied
that it cannot resolve a query, no further lookup will be attempted.
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| NOTE: It is very important that you omit the leading zeros
in the domain name resolver files. If you enter leading zeros here,
the resolver routines will interpret the numbers as octal numbers. |
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- sortlist
This directive is a mechanism which lets you specify
subnets and networks for the resolver to prefer if it receives multiple
addresses as a result of a query. The format is the sortlist directive,
followed by a list of network addresses may also include a subnet
mask, which immediately follows the address, preceded by a slash
symbol (/).
sortlist 128.32.42.0/255.255.255.0 15.0.0.0
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- options
The options directive lets you set two internal
resolver settings.
options debug
The above directive will set an internal flag which causes
debugging information to be produced on standard output.
options ndots:2
The above directive sets the minimum number of dots a domain
name query must contain before the resolver will assume that it
is a fully qualified name and therefore does not need to append
the default domain (or searchlist argument) before sending it to
the server.
The options directive can combine both settings on the same
line.
options debug ndots:2
- lines
Beginning with a pound sign (#) or a semicolon (;)
in the first column, they are interpreted as comments and ignored
by the resolver.