Appendix C. A named Reference
This appendix provides detailed information about
named syntax and the commands and files used to
configure it. This is primarily a reference to use in conjunction with the
tutorial information in Chapter 8. This
information is useful to any domain administrator.
The named Command
The server side of DNS is run by the name server daemon,
named. The syntax of the
named command is:
configfile] [-q -r -f -v] [-u
The options used on the
named command line
Logs debugging information in the file named.run. The argument
levelis a number from 1 to 11. A higher
levelnumber increases the detail of the information logged, but even when
levelis set to 1, the named.run file grows very rapidly. Whenever you use debugging, keep an eye on the size of the named.run file and use
ndc notraceor SIGUSR2 to close the file if it gets too large. Signal handling is covered in the next section.
It is not necessary to turn on debugging with the
-doption to receive error messages from
nameddisplays error messages on the console and stores them in the messages, even if debugging is not specified. The
-doption provides additional debugging information.
Defines the UDP/TCP port used by
portis the port number used to connect to the remote name server. If the
-poption is not specified, the standard port (53) is used. Since port 53 is a well-known port, ...