Stores name resolution information for the named daemon.
The host's data file is one of the DOMAIN data files and contains name-to-address resolution mapping information for all machines in the name server's zone of authority. The name of the host's data file is specified in the named boot file. This file should exist only on name servers that are designated as primary for a domain. There may be more than one host's data file per primary name server.
All entries in this file must be in Standard Resource Record Format. Valid resource records in this file are:
Except for comments (starting with a ; (semicolon) and continuing to the end of the line), the resource records in the data files generally follow the format of the resource records that the named daemon returns in response to queries from resolver routines.
Two awk scripts, addrs.awk and hosts.awk, are provided in the /usr/samples/tcpip directory to assist you in converting your existing /etc/hosts file to DOMAIN data files. The awk scripts also contain instructions for their use. Refer to these files for more information on the conversion.
The following examples show the various ways to use the DOMAIN host's data file. In these examples, two networks are represented: abc and xyz.
Note: Host sandy, a gateway host, is on both networks and also serves as secondary name server for both.
; ;primary host data file for abc - gobi.abc ; @ IN SOA gobi.abc. root.gobi.abc. ( 1.1 ;serial 3600 ;refresh 600 ;retry 3600000;expire 86400 ;minimum ) ;name servers for abc IN NS gobi.abc. ;other name servers IN NS kalahari.xyz. kalahari.xyz. IN A 160.9.201.4 ; ;define local loopback host localhost IN A 127.1 ; ;define all hosts in abc loopback IN CNAME localhost.abc gobi IN A 192.9.201.2 gobi-abc IN CNAME gobi.abc sandy IN A 192.9.201.3 IN WKS 192.9.201.3 udp tftp nameserver domain IN WKS 192.9.201.3 tcp ( echo telnet smtp discard uucp-path systat daytime netstat chargen ftp time whois finger hostnames domain ) sandy-abc IN CNAME sandy.abc mojave IN A 192.9.201.6 IN HINFO System ABC 3.1 mojave-abc IN CNAME mojave.abc.
; ;primary host data file for xyz - kalahari.xyz ; @ IN SOA kalahari.xyz. root.kalahari.xyz. ( 1.1 ;serial 3600 ;refresh 600 ;retry 3600000;expire 86400 ;minimum ) ; ;nameservers for xyz ; IN NS kalahari.xyz. ; ;other nameservers IN NS gobi.abc. gobi.abc. IN A 192.9.201.2 ; ;define local loopback host localhost IN A 127.1 ; ;define all hosts in xyz loopback IN CNAME localhost.xyz. kalahari IN A 160.9.201.4 ns-xyz IN CNAME kalahari.xyz. kalahari-xyz IN CNAME kalahari.xyz. IN HINFO System ABC 3.1 sahara IN A 160.9.201.13 IN WKS 160.9.201.13 ( udp tftp nameserver domain ) IN WKS 160.9.201.13 tcp ( echo telnet smtp discard uucp-path systat daytime netstat chargen ftp time whois finger hostnames domain ) IN HINFO System ABC 3.1 lopnor IN A 160.9.201.5 lopnor-xyz IN CNAME lopnor.xyz. IN HINFO System ABC 3.1 sandy IN A 160.9.201.3
This file is part of TCP/IP in Network Support Facilities in Base Operating System (BOS) Runtime.
| /etc/named.conf | Defines how the named daemon initializes the DOMAIN name server file. |
| /usr/samples/tcpip/addrs.awk | Sample awk script for converting an /etc/hosts file to an /etc/named.rev file. The awk script also contains directions for its use. |
| /usr/samples/tcpip/hosts.awk | Sample awk script for converting an /etc/hosts file to an /etc/named.data file. The awk script also contains directions for its use. |
| /usr/samples/tcpip/named.conf | Sample named.conf file, which also contains directions for its use. |
| /usr/samples/tcpip/named.data | Sample named.data file, which also contains directions for its use. |
The named daemon.
The DOMAIN Reverse Data file format, DOMAIN Cache file format, DOMAIN Local file format.
Standard Resource Record Format for TCP/IP.
Naming and Configuring Name Servers in AIX Version 4.3 System Management Guide: Communications and Networks.