133 lines
5.4 KiB
Groff
133 lines
5.4 KiB
Groff
.\" Copyright (C) 2004, 2005 Internet Systems Consortium, Inc. ("ISC")
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.\" Copyright (C) 2000, 2001, 2003 Internet Software Consortium.
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.\"
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.\" Permission to use, copy, modify, and distribute this software for any
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.\" purpose with or without fee is hereby granted, provided that the above
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.\" copyright notice and this permission notice appear in all copies.
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.\"
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.\" THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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.\" REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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.\" AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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.\" INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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.\" LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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.\" OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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.\" PERFORMANCE OF THIS SOFTWARE.
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.\"
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.\" $Id: named.8,v 1.26 2005/05/13 03:14:05 marka Exp $
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.\"
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.hy 0
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.ad l
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.\"Generated by db2man.xsl. Don't modify this, modify the source.
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.de Sh \" Subsection
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.br
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.if t .Sp
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.ne 5
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.PP
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\fB\\$1\fR
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.PP
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..
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.de Sp \" Vertical space (when we can't use .PP)
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.if t .sp .5v
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.if n .sp
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..
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.de Ip \" List item
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.br
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.ie \\n(.$>=3 .ne \\$3
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.el .ne 3
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.IP "\\$1" \\$2
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..
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.TH "NAMED" 8 "June 30, 2000" "" ""
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.SH NAME
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named \- Internet domain name server
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.SH "SYNOPSIS"
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.HP 6
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\fBnamed\fR [\fB\-4\fR] [\fB\-6\fR] [\fB\-c\ \fIconfig\-file\fR\fR] [\fB\-d\ \fIdebug\-level\fR\fR] [\fB\-f\fR] [\fB\-g\fR] [\fB\-n\ \fI#cpus\fR\fR] [\fB\-p\ \fIport\fR\fR] [\fB\-s\fR] [\fB\-t\ \fIdirectory\fR\fR] [\fB\-u\ \fIuser\fR\fR] [\fB\-v\fR] [\fB\-x\ \fIcache\-file\fR\fR]
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.SH "DESCRIPTION"
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.PP
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\fBnamed\fR 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\&.
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.PP
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When invoked without arguments, \fBnamed\fR will read the default configuration file \fI/etc/named\&.conf\fR, read any initial data, and listen for queries\&.
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.SH "OPTIONS"
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.TP
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\-4
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Use IPv4 only even if the host machine is capable of IPv6\&. \fB\-4\fR and \fB\-6\fR are mutually exclusive\&.
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.TP
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\-6
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Use IPv6 only even if the host machine is capable of IPv4\&. \fB\-4\fR and \fB\-6\fR are mutually exclusive\&.
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.TP
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\-c \fIconfig\-file\fR
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Use \fIconfig\-file\fR as the configuration file instead of the default, \fI/etc/named\&.conf\fR\&. To ensure that reloading the configuration file continues to work after the server has changed its working directory due to to a possible \fBdirectory\fR option in the configuration file, \fIconfig\-file\fR should be an absolute pathname\&.
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.TP
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\-d \fIdebug\-level\fR
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Set the daemon's debug level to \fIdebug\-level\fR\&. Debugging traces from \fBnamed\fR become more verbose as the debug level increases\&.
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.TP
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\-f
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Run the server in the foreground (i\&.e\&. do not daemonize)\&.
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.TP
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\-g
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Run the server in the foreground and force all logging to \fIstderr\fR\&.
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.TP
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\-n \fI#cpus\fR
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Create \fI#cpus\fR worker threads to take advantage of multiple CPUs\&. If not specified, \fBnamed\fR will try to determine the number of CPUs present and create one thread per CPU\&. If it is unable to determine the number of CPUs, a single worker thread will be created\&.
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.TP
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\-p \fIport\fR
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Listen for queries on port \fIport\fR\&. If not specified, the default is port 53\&.
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.TP
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\-s
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Write memory usage statistics to \fIstdout\fR on exit\&.
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.RS
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.B "Note:"
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This option is mainly of interest to BIND 9 developers and may be removed or changed in a future release\&.
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.RE
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.TP
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\-t \fIdirectory\fR
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\fBchroot()\fR to \fIdirectory\fR after processing the command line arguments, but before reading the configuration file\&.
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.RS
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.B "Warning:"
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This option should be used in conjunction with the \fB\-u\fR option, as chrooting a process running as root doesn't enhance security on most systems; the way \fBchroot()\fR is defined allows a process with root privileges to escape a chroot jail\&.
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.RE
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.TP
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\-u \fIuser\fR
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\fBsetuid()\fR to \fIuser\fR after completing privileged operations, such as creating sockets that listen on privileged ports\&.
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.RS
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.B "Note:"
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On Linux, \fBnamed\fR uses the kernel's capability mechanism to drop all root privileges except the ability to \fBbind()\fR to a privileged port and set process resource limits\&. Unfortunately, this means that the \fB\-u\fR option only works when \fBnamed\fR 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 \fBsetuid()\fR\&.
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.RE
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.TP
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\-v
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Report the version number and exit\&.
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.TP
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\-x \fIcache\-file\fR
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Load data from \fIcache\-file\fR into the cache of the default view\&.
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.RS
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.B "Warning:"
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This option must not be used\&. It is only of interest to BIND 9 developers and may be removed or changed in a future release\&.
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.RE
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.SH "SIGNALS"
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.PP
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In routine operation, signals should not be used to control the nameserver; \fBrndc\fR should be used instead\&.
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.TP
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SIGHUP
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Force a reload of the server\&.
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.TP
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SIGINT, SIGTERM
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Shut down the server\&.
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.PP
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The result of sending any other signals to the server is undefined\&.
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.SH "CONFIGURATION"
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.PP
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The \fBnamed\fR configuration file is too complex to describe in detail here\&. A complete description is provided in the BIND 9 Administrator Reference Manual\&.
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.SH "FILES"
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.TP
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\fI/etc/named\&.conf\fR
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The default configuration file\&.
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.TP
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\fI/var/run/named\&.pid\fR
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The default process\-id file\&.
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.SH "SEE ALSO"
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.PP
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RFC 1033, RFC 1034, RFC 1035, \fBrndc\fR(8), \fBlwresd\fR(8), BIND 9 Administrator Reference Manual\&.
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.SH "AUTHOR"
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.PP
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Internet Systems Consortium
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