Updated: 2021/Apr/14


RNDC-CONFGEN(8)                     BIND 9                     RNDC-CONFGEN(8)



NAME
       rndc-confgen - rndc key generation tool

SYNOPSIS
       rndc-confgen [-a] [-A algorithm] [-b keysize] [-c keyfile] [-h] [-k
       keyname] [-p port] [-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     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
              authentication 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.

       -A algorithm
              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
              hmac-sha256.

       -b keysize
              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.

       -c keyfile
              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
              to rndc-confgen.

       -k keyname
              This option specifies the key name of the rndc authentication
              key. This must be a valid domain name. The default is rndc-key.

       -p port
              This option specifies the command channel port where named
              listens for connections from rndc. The default is 953.

       -s address
              This option 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
              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
              chrooted named.

       -u user
              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.

EXAMPLES
       To allow rndc to be used with no manual configuration, run:

       rndc-confgen -a

       To print a sample rndc.conf file and the 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
       2021, Internet Systems Consortium



9.16.20                                                        RNDC-CONFGEN(8)