40f53fa8d9
own CVS tree will help minimize CVS conflicts. Maybe not. Blame Graff for getting me to trim all trailing whitespace.
167 lines
4.4 KiB
Groff
167 lines
4.4 KiB
Groff
.\" Copyright (C) 2000 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 INTERNET SOFTWARE CONSORTIUM
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.\" DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
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.\" INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
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.\" INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
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.\" FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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.\" NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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.\" WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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.\"
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.\" $Id: rndc.8,v 1.8 2000/08/01 01:18:46 tale Exp $
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.\"
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.Dd Jun 30, 2000
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.Dt RDNC 8
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.Os BIND9 9
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.ds vT BIND9 Programmer's Manual
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.Sh NAME
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.Nm rdnc
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.Nd name server control utility
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.Sh SYNOPSIS
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.Nm rndc
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.Op Fl c Ar config-file
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.Op Fl M
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.Op Fl m
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.Op Fl p Ar port#
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.Op Fl s Ar server
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.Op Fl v
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.Op Fl y Ar key_id
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.Ar command ....
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.Sh DESCRIPTION
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This command allows the system administrator to control the operation
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of a name server.
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It supersedes the
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.Xr ndc 8
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utility that was provided in old BIND releases.
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If
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.Nm rndc
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is invoked with no command line options or arguments, it
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prints a short summary of the supported commands and the available
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options and their arguments.
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.Pp
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.Nm rndc
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communicates with the name server over a TCP connection,
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sending commands authenticated with digital signatures.
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In the current versions of
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.Nm rndc
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and
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.Xr named 8
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the only supported encryption algorithm is HMAC-MD5, which uses a
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shared secret on each end of the connection.
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This provides TSIG-style authentication for the command request
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and the name server's response.
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All commands sent over the channel
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must be signed by a key_id known to the server.
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.Pp
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.Nm rndc
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reads its default configuration file,
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.Pa /etc/rndc.conf
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to determine how to contact the name server and decide what algorithm
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and keys is should use.
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The
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.Fl c
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option can be used to specify an alternate configuration file.
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.Pp
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.Ar server
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is the name or address of the server which matches a
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.Dv server{}
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statement in the configuration file for
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.Nm rndc .
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If no
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.Ar server
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is supplied on the command line, the host named by the
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.Dv default-server
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clause in the
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.Dv options{}
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statement of the configuration file will be used.
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.Pp
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The
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.Fl p
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option can be used to make
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.Nm rndc
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send commands to TCP port number
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.Ar port#
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on the system running the name server instead of BIND 9's
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default control channel port of 953.
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.Pp
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The
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.Fl y
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option identifies the
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.Ar key_id
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to use from the configuration file.
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.Ar key_id
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must be known by
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.Xr named
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with the same algorithm and secret string in order for
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control message validation to succeed.
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If no
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.Fl y
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option is provided,
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.Nm rndc
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will first look for a
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.Dv key
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clause in the
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.Dv server{}
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statement of the server being used, or if no
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.Dv server{}
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statement is present for that host, then the
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.Dv default-key
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clause of the
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.Dv options{}
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statement.
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Note that the configuration file for
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.Nm rdnc
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contains shared secrets which are used to send authenticated
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control commands to name servers.
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It should therefore not have general read or write access.
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.Pp
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The
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.Fl M ,
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.Fl m ,
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and
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.Fl v
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options provided debugging information and are primarily of interest
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only to the BIND 9 developers.
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They might be changed or removed in future releases.
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.Pp
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The only valid value for
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.Ar command
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is \*qreload\*q, which forces the name server to reload its configuation
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file and zones.
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Further commands will be provided in future releases as the management
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capabilities of
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.Nm rndc
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are extended.
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.Sh LIMITATIONS
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.Nm rndc
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currently only supports the
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.Dv reload
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command.
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Future releases will provide more commands so that
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.Nm rndc
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offers at least as many management capabilities as the old
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.Xr ndc
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utility.
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.Pp
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There is currently no way to provide the shared secret for a key_id
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without using the configuration file.
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.Pp
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Several error messages could be clearer.
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For example, trying to connect
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from an address that is not in the list of acceptable addresses
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configured into
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.Xr named
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will result in the error message "end of file" when the server
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unceremoniously closes the connection.
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.Sh SEE ALSO
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.Xr rndc.conf 5 ,
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.Xr named 8 ,
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.Xr named.conf 5 ,
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.Xr RFC2845 ,
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.Xr ndc 8 .
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