Open System Services Shell and Utilities Reference Manual (G06.27+, H06.04+)

rndc(8) OSS Shell and Utilities Reference Manual
NAME
rndc - Starts the nonsecure BIND 9 Internet domain name server control utility
SYNOPSIS
/etc/dns923/rndc
[ -c config_file ]
[ -k key_file ]
[ -s server ]
[ -p port ]
[ -V ]
[ -y key_id ]
command
FLAGS
-c config_file Use config_file as the configuration file instead of the default,
/etc/rndc.conf.
-k key_file Use key_file as the key file instead of the default, /etc/rndc.key.
The key in /etc/rndc.key will be used to authenticate commands
sent to the server if the config_file does not exist.
-s server server is the name or address of the server which matches a server
statement in the configuration file for rndc. If no server is sup-
plied on the command line, the host named by the default-server
clause in the option statement of the configuration file is used.
-p port Send commands to TCP port port instead of BIND 9’s default
control channel port, 953.
-V Enable verbose logging.
-y keyid Use the key keyid from the configuration file. keyid must be
known by named with the same algorithm and secret string in
order for control message validation to succeed. If no keyid is
specified, rndc first looks for a key clause in the server statement
of the server being used, or if no server statement is present for
that host, it then looks for the default-key clause of the options
statement. Note that the configuration file contains shared secrets
which are used to send authenticated control commands to name
servers. It should therefore not have general read or write access.
Operands
command For the complete set of commands supported by rndc, see the
BIND 9 Administrator Reference Manual or run rndc without
arguments to see its help message.
DESCRIPTION
rndc controls the operation of a BIND 9 domain name server. If rndc is invoked with no com-
mand line options or arguments, it prints a short summary of the supported commands and the
available options and their arguments.
rndc communicates with the name server over a TCP connection, sending commands authenti-
cated with digital signatures. In the nonsecure version of rndc and named, the only supported
authentication algorithm is HMAC-MD5, which uses a shared secret on each end of the connec-
tion. This provides TSIG-style authentication for the command request and the name server’s
response. All commands sent over the channel must be signed by a key_id known to the server.
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