User`s manual

DA-710 Series Linux Managing Communications
3-8
DNS Client
The DA-710-LX supports DNS client (but not DNS server). To set up DNS client, you need to edit three
configuration files: /etc/hostname, /etc/resolv.conf, and /etc/nsswitch.conf.
/etc/hostname
1. Mount the root file system with write permission.
MOXA:~# mount -o remount,rw /dev/hda1 /
2. Edit /etc/hostname:
MOXA:~# vi /etc/hostname
MOXA
3. After you finish writing or modifying the code, remember to execute “umount /” to change the root directory
back to Read-only mode.
MOXA:~# umount /
4. Re-configure the hostname.
MOXA:~# /etc/init.d/hostname.sh start
5. Check the new hostname.
MOXA:~# hostname
/etc/resolv.conf
This is the most important file that you need to edit when using DNS. For example, before you using # ntpdate
time.stdtime.gov.tw to update the system time, you will need to add the DNS server address to the file. Ask
your network administrator which DNS server address you should use. The DNS server’s IP address is specified
with the nameserver command. For example, add the following line to /etc/resolv.conf (assuming the DNS
server’s IP address is 168.95.1.1):
nameserver 168.95.1.1
MOXA:/etc# cat resolv.conf
#
# resolv.conf This file is the resolver configuration file
# See resolver(5).
#
#nameserver 192.168.1.16
nameserver 168.95.1.1
nameserver 140.115.1.31
nameserver 140.115.236.10
MOXA:/etc#