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RNDC-CONFGEN(8) BIND9 RNDC-CONFGEN(8)
NAME
rndc-confgen - rndc key generation tool
SYNOPSIS
rndc-confgen [-a] [-b keysize] [-c keyfile] [-h] [-k keyname] [-p port] [-r randomfile]
[-s address] [-t chrootdir] [-u user]
DESCRIPTION
rndc-confgen generates configuration files for rndc. It can be used as a convenient
alternative to writing the rndc.conf file and the corresponding controls and key
statements in named.conf by hand. Alternatively, it can be run with the -a option to set
up a rndc.key file and avoid the need for a rndc.conf file and a controls statement
altogether.
OPTIONS
-a
Do automatic rndc configuration. This creates a file rndc.key in /etc (or whatever
sysconfdir was specified as when BIND was built) that is read by both rndc and named
on startup. The rndc.key file defines a default command channel and authentication key
allowing rndc to communicate with named on the local host with no further
configuration.
Running rndc-confgen -a allows BIND 9 and rndc to be used as drop-in replacements for
BIND 8 and ndc, with no changes to the existing BIND 8 named.conf file.
If a more elaborate configuration than that generated by rndc-confgen -a is required,
for example if rndc is to be used remotely, you should run rndc-confgen without the -a
option and set up a rndc.conf and named.conf as directed.
-b keysize
Specifies the size of the authentication key in bits. Must be between 1 and 512 bits;
the default is 128.
-c keyfile
Used with the -a option to specify an alternate location for rndc.key.
-h
Prints a short summary of the options and arguments to rndc-confgen.
-k keyname
Specifies the key name of the rndc authentication key. This must be a valid domain
name. The default is rndc-key.
-p port
Specifies the command channel port where named listens for connections from rndc. The
default is 953.
-r randomfile
Specifies a source of random data for generating the authorization. If the operating
system does not provide a /dev/random or equivalent device, the default source of
randomness is keyboard input. randomdev specifies the name of a character device or
file containing random data to be used instead of the default. The special value
keyboard indicates that keyboard input should be used.
-s address
Specifies the IP address where named listens for command channel connections from
rndc. The default is the loopback address 127.0.0.1.
-t chrootdir
Used with the -a option to specify a directory where named will run chrooted. An
additional copy of the rndc.key will be written relative to this directory so that it
will be found by the chrooted named.
-u user
Used with the -a option to set the owner of the rndc.key file generated. If -t is also
specified only the file in the chroot area has its owner changed.
EXAMPLES
To allow rndc to be used with no manual configuration, run
rndc-confgen -a
To print a sample rndc.conf file and corresponding controls and key statements to be
manually inserted into named.conf, run
rndc-confgen
SEE ALSO
rndc(8), rndc.conf(5), named(8), BIND 9 Administrator Reference Manual.
AUTHOR
Internet Systems Consortium
COPYRIGHT
Copyright © 2004, 2005, 2007, 2009 Internet Systems Consortium, Inc. ("ISC")
Copyright © 2001, 2003 Internet Software Consortium.
BIND9 Aug 27, 2001 RNDC-CONFGEN(8)
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