Technical data

Configuring and Managing BIND
5.3 Configuring the BIND Server (BIND 8.1)
$ NSUPDATE
> UPDATE ADD WWW.NADS.ZN 60 IN CNAME IVY18.NADS.ZN
>
res_mkupdate: packet size = 49
;; res_send()
;; ->>HEADER<<- opcode: UPDATE, status: NOERROR, id: 53349
;; flags:; ZONE: 1, PREREQUISITE: 0, UPDATE: 1, ADDITIONAL: 0
;; nads.zn, type = SOA, class = IN
www.nads.zn. 1M IN CNAME ivy18.nads.zn.
;; Querying server (# 1) address = 192.168.1.1
;; got answer:
;; ->>HEADER<<- opcode: UPDATE, status: NOERROR, id: 53349
;; flags: qr ra; ZONE: 0, PREREQUISITE: 0, UPDATE: 0, ADDITIONAL: 0
Note
When entering data in interactive mode, pressing Return (or Enter) with
no data assumes the end of the input. NSUPDATE then processes all
update entries in one operation.
5.3.7 Configuring Cluster Failover and Redundancy
In the same OpenVMS Cluster, multiple BIND master servers can share a
common database, thereby providing redundancy and a failover mechanism when
one of the servers becomes unavailable.
To configure a DNS cluster failover and redundancy environment, perform the
following steps on each node participating in the cluster.
1. Run the TCPIP$CONFIG command procedure, and from the Servers menu
enable the BIND service.
2. Edit the BIND configuration file,
SYS$SPECIFIC:[TCPIP$BIND]TCPIP$BIND.CONF.
• Configure the node as a master server.
• Add or edit the options statement. The directory substatement should
be as follows:
options {
directory "TCPIP$BIND_COMMON";
};
TCPIP$BIND_COMMON is a logical name defined in the TCPIP$BIND_
COMMON_STARTUP.COM command procedure as a search list. The
search list consists of the SYS$SPECIFIC:[TCPIP$BIND] directory and
the common directory. You will be prompted by the setup command
procedure in the next step to specify the device on which the common
directory is to reside. If you do not specify a device, the default device and
directory is common_device:[TCPIP$BIND_COMMON], where common_
device is automatically generated in the following manner:
If the SYSUAF logical is defined, the common disk is determined from
its definition.
If the SYSUAF logical is not defined, the system uses
SYS$SYSDEVICE as the default device.
Configuring and Managing BIND 5–23