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System Administration Commands named(1M)
NAME
named, in.named - Internet domain name server
SYNOPSIS
named [-fgsv] [-c config-file] [-d debug-level] [-n #cpus]
[-p port] [-t directory] [-u user] [-x cache-file]
DESCRIPTION
The named utility is a Domain Name System (DNS) server, part
of the BIND 9 distribution from ISC. For more information on
the DNS, see RFCs 1033, 1034, and 1035.
When invoked without arguments, named reads the default con-
figuration file /etc/named.conf, reads any initial data, and
listens for queries.
in.named is a link to named.
OPTIONS
The following options are supported:
-c config-file Use config-file as the configuration file
instead of the default /etc/named.conf. To
ensure that reloading the configuration file
continues to work after the server has
changed its working directory due to to a
possible directory option in the configura-
tion file, config-file should be an absolute
pathname.
-d debug-level Set the daemon's debug level to debug-level.
Debugging traces from named become more ver-
bose as the debug level increases.
-f Run the server in the foreground (that is,
do not daemonize).
-g Run the server in the foreground and force
all logging to stderr.
-n #cpus Create #cpus worker threads to take advan-
tage of multiple CPUs. If not specified,
named will try to determine the number of
CPUs present and create one thread per CPU.
SunOS 5.10 Last change: 6 Dec 2005 1
System Administration Commands named(1M)
If it is unable to determine the number of
CPUs, a single worker thread will be
created.
-p port Listen for queries on port port. If not
specified, the default is port 53.
-s Write memory usage statistics to stdout on
exit.
This option is mainly of interest to BIND 9
developers and might be removed or changed
in a future release.
-t directory Change the root directory using chroot(2) to
directory after processing the command line
arguments, but before reading the configura-
tion file.
This option should be used in conjunction
with the -u option, as chrooting a process
running as root doesn't enhance security on
most systems; the way chroot() is defined
allows a process with root privileges to
escape a chroot jail.
-u user Set the real user ID using setuid(2) to user
after completing privileged operations, such
as creating sockets that listen on
privileged ports.
On Linux, named uses the kernel's capability
mechanism to drop all root privileges except
the ability to use bind(3SOCKET) to bind to
a privileged port and set process resource
limits. Unfortunately, this means that the
-u option works only when named is run on
kernel 2.2.18 or later, or kernel 2.3.99-
pre3 or later, since previous kernels did
not allow privileges to be retained after
setuid().
SunOS 5.10 Last change: 6 Dec 2005 2
System Administration Commands named(1M)
-v Report the version number and exit.
-x cache-file Load data from cache-file into the cache of
the default view.
This option must not be used. It is of
interest only to BIND 9 developers and might
be removed or changed in a future release.
SIGNALS
In routine operation, signals should not be used to control
the nameserver; rndc(1M) should be used instead.
SIGHUP Force a reload of the server.
SIGINT, SIGTERM Shut down the server.
The result of sending any other signals to the server is
undefined.
CONFIGURATION
The named configuration file is too complex to describe in
detail here. A complete description is provided in the BIND
9 Administrator Reference Manual. See SEE ALSO.
FILES
/etc/named.conf default configuration file
/var/run/named.pid default process-ID file
ATTRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
SunOS 5.10 Last change: 6 Dec 2005 3
System Administration Commands named(1M)
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|_____________________________|
| Availability | SUNWbind9 |
|_____________________________|_____________________________|
| Interface Stability | Standard |
|_____________________________|_____________________________|
SEE ALSO
rndc(1M), chroot(2), setuid(2), bind(3SOCKET), attributes(5)
RFC 1033, RFC 1034, RFC 1035
BIND 9 Administrator Reference Manual, published by the
Internet Systems Consortium and accessible at www.bind9.net
NOTES
Source for BIND9 is available in the SUNWbind9S package.
SunOS 5.10 Last change: 6 Dec 2005 4
Man(1) output converted with
man2html and wrapped by fishsponge
This page was generated on Wed Sep 12 11:26:18 GMT 2007
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