named(1M)							     named(1M)

NAME
       named - Internet domain name server

SYNOPSIS
       config-file] debuglevel] ncpus] port] directory] user-id]

DESCRIPTION
       is  the Internet domain name system (DNS) server.  See RFCs 1033, 1034,
       and 1035 for more information on DNS.

       The configuration file contains information about where the name server
       gets its initial data.  See named.conf(4) for details.

       With no arguments, reads the default configuration file, reads any ini‐
       tial data, and listens for queries.

       requires superuser privileges to execute.

   Options
       Use IPv4 only, even if the host machine is capable of IPv6.

       Use IPv6 only, even if the host machine is capable of IPv4.

       Use	 config-file instead of the  default  configuration  file,  To
		 ensure	 that the configuration file can be reloaded after the
		 server has changed its working directory (due to  a  possible
		 option	 in  the configuration file), config-file should be an
		 absolute path name.

       Set the debug level to
		 debuglevel.  Debugging traces from become more verbose as the
		 debug level increases.

       Run the server in the foreground;
		 do not fork and daemonize.  The default is to daemonize.

       Run  the	 server	 in  the  foreground and force all logging to standard
       error.

       Create	 ncpus worker threads to take advantage of multiple CPUs.   By
		 default,  tries  to  determine the number of CPUs present and
		 create one thread per CPU.  If cannot determine the number of
		 CPUs, it creates a single worker thread.

       Listen for queries on port number
		 port.	The default is port 53.

       Change root
		 to directory after processing the command line arguments, but
		 before reading the configuration file.

		 Caution: This option should be used with the option,  because
		 a  chrooted  process  running	as  superuser does not enhance
		 security and could escape a "chroot jail".

       Specify the user that the server should run as after it initializes.
		 The value specified may be either a user name	or  a  numeric
		 user ID.

       Report the version number and exit.

   64-bit Support
       The 64-bit binary is available in

       To  start  the  64-bit binary through startup script, set the following
       values in the file:

       You must also ensure that the kernel tunable is set appropriately.

       NOTE: Kill all the running instances  of	 before	 starting  the	64-bit
       binary.

   Signals
       You  can	 use  the  following signals to reload or shut down the server
       process, via the command (see kill(1)):

	      Causes the server to read its configuration file
			and reload the database.

	      Cause the server to shut down gracefully.

       Sending any other signals to the server will have undefined results.

       The command can also be used to send signals  to	 the  server  process.
       See sig_named(1M).

DIAGNOSTICS
       Any  errors  encountered by in the configuration file, master files, or
       in normal operation are logged with and in the debug file,  (if	debug‐
       ging is on); then quits.

AUTHOR
       was developed by the Internet Systems Consortium (ISC).

FILES
       Name server configuration file

       Name server startup configuration file

       Process ID

       Debug output

       64-bit binary

SEE ALSO
       dnssec-keygen(1),  dnssec-signzone(1),  host(1),	 kill(1), nsupdate(1),
       rndc(1), hosts_to_named(1M), sig_named(1M),  chroot(2),	fork(2),  sig‐
       nal(2), gethostent(3N), named.conf(4), rndc.conf(4), hostname(5).

       Requests	 for  Comments	(RFC):	882,  883, 973, 974, 1032, 1033, 1034,
       1035, and 1123, available online at

       available online at

       available from the Internet Systems Consortium at

				   BIND 9.3			     named(1M)

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