Configuring and Managing MPE/iX Internet Services (August 2002)

Chapter 8
DNS BIND/iX
Overview of DNS BIND/iX
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Overview of DNS BIND/iX
In this implementation of BIND 8.1.1, the configuration and data files for the DNS server are found under the
/BIND/PUB directory of the POSIX name space, though the DNS server is started by running a job from the
MPE/iX name space — JNAMED.PUB.BIND which runs program NAMED.PUB.BIND.
The NAMED program maintains a cache of information, taken initially from its zone files (database files)
augmented by information which it has retrieved from other DNS servers on the network.
Syslog is the standard event logging subsystem for UNIX, which has now been implemented as Syslog/iX on
MPE/iX 6.0 running in the POSIX environment. DNS BIND/iX server logging is handled by Syslog/iX. In
order to run the DNS server, you will first configure and start Syslog/iX. Details on configuring and running
Syslog/iX can be found in Appendix E, “Configure and Run Syslog/iX,” of this manual.
The client (resolver) code has already been implemented in earlier releases of MPE/iX via library routines and
the configuration file RESLVCNF.NET.SYS (linked to /etc/resolv.conf). RESLVCNF.NET.SYS contains
information about the domain of the client host and the IP addresses of the local DNS servers who can be
queried for information.
DNS BIND/iX Component Files
The major files for the implementation of DNS BIND/iX are found in PUB.BIND and NET.SYS in the MPE/iX
name space, and under directories /BIND/PUB and /etc in the POSIX name space.
JNAMED.PUB.BIN
The job which runs the DNS server.
NAMED.PUB.BIND
The DNS server program.
RESLVCNF.NET.SYS
The DNS client (resolver) configuration file. Linked to /etc/resolv.conf.
/etc/resolv.conf
The DNS client (resolver) configuration file. Linked to RESLVCNF.NET.SYS.
/BIND/PUB/etc/ named.conf
The configuration file for the DNS server program. It used to be called /etc/named.boot in
earlier versions of BIND.
/BIND/PUB/etc/zone. <various>
The zone files contain the data which will be loaded into the DNS server’s cache when it is
started — these used to be called db or “database” files in earlier versions of BIND. They
replace the db.<various> files.
Several example zone files have been included with the DNS BIND/iX product.
/BIND/PUB/etc/ nslookup.help
The help text for the nslookup utility.