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dns-dhcp
Langue: en
Version: dnsutl (mandriva - 01/05/08)
Section: 1 (Commandes utilisateur)
Sommaire
NAME
dns-dhcp - generate dhcp tables from DNS tablesSYNOPSIS
dns-dhcp [ option... ][ infile [ outfile ]]dns-dhcp -Help
dns-dhcp -VERSion
DESCRIPTION
The dns-dhcp program is used to generate portions of the /etc/dhcp.conf file from the forward DNS tables, augmented with ``ether a'' entries.This is supplemented with an additional ``dhcp'' class, so that extra information may be defined.
The output format is described in the dhcpd (8) manual entry. Usually, the output of the dns-dhcp command is included into the /etc/dhcp.conf file, rather then define the entire file with the output in the dns-dhcp command.
DHCP TYPES
The ``dhcp'' class has the following defined types:- filename
- The absolute path of the bootfile.
THE * DEFAULT
The special host name ``*'' may be used to specify defaults. These may be over-riden by specific entries. The most recently see default of each type name is remembered. This may be exploited, for example, to set different servers and gateways for different networks.OPTIONS
The following options are understood:- -Help
Provide some help with using the dns-dhcp program.- -VERSion
Print the version of the dns-dhcp program being executed.
All other options will produce a diagnostic error.
All other options will produce a diagnostic error. Options may be abbreviated, the minimum abbreviation is shown in upper-case. Options are case insensitive. Options and file names may be mixed arbitrarily on the command line.
EXIT STATUS
The dns-dhcp command will exit with a status of 1 on any error. The dns-dhcp command will only exit with a status of 0 if there are no errors.EXAMPLE
The idea is that you have all of the information concerning each computer in the one file. This makes it less likely that something will be omitted, and simpler to change if the name or IP address changes.Given a database file called ``example.com'' and which contains the following text
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$origin example.com. @ in soa exmaple.com. hostmaster.example.com. ( 990101001 ; serial 10800 ; refresh: 3 hours 1800 ; retry: 30 minutes 3600000 ; expire: 1000 hours 86400 ) ; minimum: 24 hours mercury in a 182.168.1.1 ether a 2:7:1:f:b7:fb in hinfo "IBM-PC 486" "MSDOS" venus in a 182.168.1.2 ether a 2:60:8c:2d:20:c4 in hinfo "IBM-6000/590" "UNIX AIX 3.2.5" earth in a 182.168.1.3 ether a 08:00:20:79:1f:0d in hinfo "Sun-4/5 (SPARCstation 5)" "UNIX SunOS 5.4" mars in a 182.168.1.4 ether a aa:0:4:0:86:53 in hinfo "DEC-Alpha 3000" "UNIX OSF/1 V3.2" jupiter in a 182.168.1.5 ether a 8:0:2b:99:49:ad in hinfo "DEC-VXT2000+ XTerminal" "Other: X11R5" bootp tc dec-vxt-2000 saturn in a 182.168.1.6 ether a 0:40:10:56:43:57 in hinfo "Apple-Macintosh IIsi" "MacOS 7.5.3" neptune in a 182.168.1.7 ether a 0:aa:0:69:7c:5b in hinfo "IBM-PC" "MSDOS" uranus in a 182.168.1.8 ether a 0:0:e8:a4:0:25 in hinfo "IBM-PC" "MSDOS" pluto in a 182.168.1.9 ether a 8:0:9:d:2a:87 in hinfo "HP-Laser-Jet 4" "None" lp in cname pluto
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% dns-dhcp example.com /etc/dhcp.conf %
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host mercury { fixed-address 182.168.1.1; hardware ethernet 02:07:01:0f:b7:fb; } host venus { fixed-address 182.168.1.2; hardware ethernet 02:60:8c:2d:20:c4; } host earth { fixed-address 182.168.1.3; hardware ethernet 08:00:20:79:1f:0d; } host mars { fixed-address 182.168.1.4; hardware ethernet aa:00:04:00:86:53; } host jupiter { fixed-address 182.168.1.5; hardware ethernet 08:00:2b:99:49:ad; } host saturn { fixed-address 182.168.1.6; hardware ethernet 00:40:10:56:43:57; } host neptune { fixed-address 182.168.1.7; hardware ethernet 00:aa:00:69:7c:5b; } host uranus { fixed-address 182.168.1.8; hardware ethernet 00:00:e8:a4:00:25; } host pluto { fixed-address 182.168.1.9; hardware ethernet 08:00:09:0d:2a:87; }
Makefile
All of this can be automated using the following makefile fragment:-
/etc/dhcp.conf: example.com dns-dhcp example.com $@
If you were using NIS, NIS+ or LDAP you would update them, rather than the static file.
COPYRIGHT
dns-dhcp version 1.8,Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000, 2001, 2003, 2004, 2005, 2006 Peter Miller; All rights reserved.
The dns-dhcp program comes with ABSOLUTELY NO WARRANTY; for details use the 'dns-dhcp -VERSion Warranty' command. The dns-dhcp program is free software, and you are welcome to redistribute it under certain conditions; for details use the 'dns-dhcp -VERSion Redistribution' command.
AUTHOR
Peter Miller | E-Mail: | millerp@canb.auug.org.au |
/\/\* | Web: | http://www.canb.auug.org.au/~millerp/ |
Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre