4P14
Lab 8
Domain and NameServers
We will be
working in the Linux environment.
Each machine which is indexed by a DNS server should have a
name. The command to determine the hostname in Linux is
hostname. Try this, what did you get?
This indicates that it have been set, or they are set to
something which is not to your taste. Set the host name to
J327-DayIP. For the purpose of this lab, Day will be the day
of the lab, e.g. If it is a Wednesday lab then Wed can
be used. The IP will be the last part of the static IP your
were asked to set your machine to in lab 6 (written on the
front of the desk), e.g. 10, 20, 30 etc.
Do something similar with the domainname, such as J327Day.
To make these changes permanent, you can edit the network file
/etc/sysconfig/network, do so. restart
Adding a DNS server. We wish to add a local caching only DNS
server to our network. Each machine in the lab will be its own
DNS and thus operate independently. The changes above are to
ensure that no two machines are in conflict.
The following document:
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Deployment_Guide/ch-DNS_Servers.html
a simple youtube video which explains how to set up this
beast. Must watch and follow along....
https://www.youtube.com/watch?v=HMB7wQ86wUQ
Here is another site which helps explain BIND
http://www.computernetworkingnotes.com/network-administrations/dns-server.html
describes how to install a DNS server under linux. Bind as
mentioned in the document, and can be installed with:
yum
-y install bind bind-utils bind-chroot
When installing the server, use your own IP which should be
the DHCP address your system started with. Not ideal, since we
normally would use a static IP, but it will get the job done.
Watch the vid and write down any ip and domains you will need
to configure your system.
You can use the departments DNS servers for forwarding,
139.57.100.11
When you are finished the lab, remove bind
to allow the next lab to experience this lab.
sudo yum remove bind bind-utils bind-chroot
Reward 4%
Show your lab demonstrator that you can
lookup and resolve host names using your DNS.