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RNDC-CONFGEN(8) BIND 9 RNDC-CONFGEN(8)
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rndc-confgen - rndc key generation tool
rndc-confgen [-a] [-A algorithm] [-b keysize] [-c keyfile] [-h] [-k
keyname] [-p port] [-s address] [-t chrootdir] [-u user]
rndc-confgen generates configuration files for rndc. It can be used as
a convenient alternative to writing the rndc.conf file and the corre-
sponding controls and key statements in named.conf by hand. Alterna-
tively, 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 alto-
-a This option sets automatic rndc configuration, which creates a
file rndc.key in /etc (or a different sysconfdir specified when
BIND was built) that is read by both rndc and named on startup.
The rndc.key file defines a default command channel and authen-
tication key allowing rndc to communicate with named on the
local host with no further configuration.
If a more elaborate configuration than that generated by
rndc-confgen -a is required, for example if rndc is to be used
remotely, run rndc-confgen without the -a option and set up
rndc.conf and named.conf as directed.
This option specifies the algorithm to use for the TSIG key.
Available choices are: hmac-md5, hmac-sha1, hmac-sha224,
hmac-sha256, hmac-sha384, and hmac-sha512. The default is
This option specifies the size of the authentication key in
bits. The size must be between 1 and 512 bits; the default is
the hash size.
This option is used with the -a option to specify an alternate
location for rndc.key.
-h This option prints a short summary of the options and arguments
This option specifies the key name of the rndc authentication
key. This must be a valid domain name. The default is rndc-key.
This option specifies the command channel port where named lis-
tens for connections from rndc. The default is 953.
This option specifies the IP address where named listens for
command-channel connections from rndc. The default is the loop-
back address 127.0.0.1.
This option is used with the -a option to specify a directory
where named runs chrooted. An additional copy of the rndc.key is
written relative to this directory, so that it is found by the
This option is used with the -a option to set the owner of the
generated rndc.key file. If -t is also specified, only the file
in the chroot area has its owner changed.
To allow rndc to be used with no manual configuration, run:
To print a sample rndc.conf file and the corresponding controls and key
statements to be manually inserted into named.conf, run:
rndc(8), rndc.conf(5), named(8), BIND 9 Administrator Reference Manual.
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