NAMED(8) NAMED(8) NAME named - Internet domain name server SYNOPSIS named [ -d debuglevel ] [ -p port# ] [ bootfile ] DESCRIPTION Named is the Internet domain name server (see RFC883 for more details). Without any arguments, named will read the default boot file /etc/named.boot, read any initial data and listen for queries. Options are: -d Print debugging information. A number after the ‘‘d’’ deter‐ mines the level of messages printed. -p Use a different port number. The default is the standard port number as listed in /etc/services. Any additional argument is taken as the name of the boot file. The boot file contains information about where the name server is to get its initial data. The following is a small example: ; ; boot file for name server ; ; type domain source file or host ; domain berkeley.edu primary berkeley.edu named.db secondary cc.berkeley.edu 10.2.0.78 128.32.0.10 cache . named.ca The first line specifies that ‘‘berkeley.edu’’ is the domain for which the server is authoritative. The second line states that the file ‘‘named.db’’ contains authoritative data for the domain ‘‘berke‐ ley.edu’’. The file ‘‘named.db’’ contains data in the master file for‐ mat described in RFC883 except that all domain names are relative to the origin; in this case, ‘‘berkeley.edu’’ (see below for a more detailed description). The second line specifies that all authorita‐ tive data under ‘‘cc.berkeley.edu’’ is to be transferred from the name server at 10.2.0.78. If the transfer fails it will try 128.32.0.10 and continue trying the address, up to 10, listed on this line. The sec‐ ondary copy is also authoritative for the specified domain. The fourth line specifies data in ‘‘named.ca’’ is to be placed in the cache (i.e., well known data such as locations of root domain servers). The file ‘‘named.ca’’ is in the same format as ‘‘named.db’’. The master file consists of entries of the form: $INCLUDE <filename> $ORIGIN <domain> <domain> <opt_ttl> <opt_class> <type> <resource_record_data> where domain is "." for root, "@" for the current origin, or a standard domain name. If domain is a standard domain name that does not end with ‘‘.’’, the current origin is appended to the domain. Domain names end‐ ing with ‘‘.’’ are unmodified. The opt_ttl field is an optional inte‐ ger number for the time-to-live field. It defaults to zero. The opt_class field is the object address type; currently only one type is supported, IN, for objects connected to the DARPA Internet. The type field is one of the following tokens; the data expected in the resource_record_data field is in parentheses. A a host address (dotted quad) NS an authoritative name server (domain) MX a mail exchanger (domain) CNAME the canonical name for an alias (domain) SOA marks the start of a zone of authority (5 numbers (see RFC883)) MB a mailbox domain name (domain) MG a mail group member (domain) MR a mail rename domain name (domain) NULL a null resource record (no format or data) WKS a well know service description (not implemented yet) PTR a domain name pointer (domain) HINFO host information (cpu_type OS_type) MINFO mailbox or mail list information (request_domain error_domain) NOTES The following signals have the specified effect when sent to the server process using the kill(1) command. SIGHUP Causes server to read named.boot and reload database. SIGINT Dumps current data base and cache to /usr/tmp/named_dump.db SIGUSR1 Turns on debugging; each SIGUSR1 increments debug level. SIGUSR2 Turns off debugging completely. FILES /etc/named.boot name server configuration boot file /etc/named.pid the process id /usr/tmp/named.run debug output /usr/tmp/named_dump.db dump of the name servers database SEE ALSO kill(1), gethostbyname(3N), signal(3c), resolver(3), resolver(5), RFC882, RFC883, RFC973, RFC974, Name Server Operations Guide for BIND 4th Berkeley Distribution 15 November 1985 NAMED(8)