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A-164 Dell PowerVault 720N, 740N, and 760N System Administrator and Command Reference Guide
NAME
DNS - Domain Name System
DESCRIPTION
Domain Name Service provides information about hosts on a network. This ser-
vice has two parts: a resolver which requests information and a nameserver
which provides it.
Data ONTAP 5.3 supports only the resolver. When the filer needs to resolve a
host address, it first looks at the /etc/nsswitch.conf (see nsswitch.conf) file to
get the order in which various name services are to be consulted. If the name
services before DNS fail in their lookup and DNS is enabled, then the DNS name
server is contacted for address resolution.
DNS can be enabled on the filer by running the setup command (see setup) or by
manually editing the configuration files as described below. If DNS is enabled by
running the setup command, then the DNS domain name needs to be entered.
Enabling DNS without the setup command:
1. Create the /etc/resolv.conf file (see resolv.conf) with up to 3 nameservers.
Each line contains the keyword nameserver followed by the IP address of
the server. For example:
nameserver 192.9.200.1
nameserver 192.9.201.1
nameserver 192.9.202.1
2. Edit the /etc/rc file (see rc) to make sure that the option specifying the DNS
domain name is set and the option to enable DNS is on. For example:
options dns.domainname company.com
options dns.enable on
3. Reboot the filer for these changes to take effect. If the above options com-
mands are also entered from the console, the reboot can be avoided.
Enabling DNS with the setup command:
At setup time, one can choose to enable DNS when prompted to do so.
setup then queries for the Internet addresses of up to three DNS
nameservers.
SEE ALSO
setup, rc, resolv.conf
DNS