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[[Category:OPS235]]
{{Admon/caution|Draft Lab|This lab has NOT been released for regular distribution. When the lab is ready to be released, this caution banner will disappear.}}
= Configuring a Network Using Virtual Machines =
==Overview==
* In this lab, you will learn the basics of networking by using your Virtual Machines and your f16host f17host machine.
* In addition, you will learn to associate network services with port numbers, and learn how to backup files by date/time.
==Required Materials (Bring to All Labs)==
* '''Fedora 16 17 LIVE CD''' - You can burn this onto a CD-R in the Open Lab* '''Fedora 16 x_64 17 x86_64 Installation DVD''' - You can burn this onto a DVD-R in the Open Lab (or burn image onto a DVD+R if you are using the Freedom Toaster).* '''SATA Hard Disk''' (in removable disk tray)* '''USB Memory Stick''' (minimum 64M)* '''Lab Logbook (Lab5 Reference Sheet)''' (to make notes and observations).
==Prerequisites==
== Lab Preparation ==
{{Admon/important | Live disc installations and system-config-network | The '''fedora1''' VM was installed from Live CD. It is missing the GUI Network Configuration tool we will be using. Use the command <code>yum install system-config-network</code> to install it.}}
{{Admon/important | Backup your VMs before proceeding | Stop all of your VMs and backup your VM disk images. Do not start the VMs until told to start them.}}
== Configuring a Network Using Virtual Machines ==
=== Investigation 1: How do you create a new virtual network. ===
{{Admon/note | Use the f16host f17host | Complete the following steps on your '''f16hostf17host''' computer system.}}
Before configuring our network we want to turn off dynamic network configuration for our Virtual Machines by turning off the "default" virtual network.
# On your '''f16hostf17host''' machine start Virtual Machine Manager
# In the Virtual Machine Manager dialog box, Select '''Edit'''-> '''Connection Details'''.
# In the '''Hosts''' Details dialog box, select the '''Virtual Networks''' tab
'''Answer the Investigation 1 observations / questions in your lab log book.'''
=== Investigation 2: How do you configure a static network using <code>system-config-network</code>. ===
#: Subnet Mask '''255.255.255.0'''
#: Default Gateway '''192.168.235.1''' (The IP address of <code>virbr1</code> on your fedora host.)
# Click on the '''DNS''' tab field and add '''192.168.235.1''' as the primary DNS server.
# Click '''Save''' to Finish, and exit the Network Connections dialog box.
# Your network connection may connect (view the Network Manager applet in the gnome panel at the top of the screen). If there is no connection after a few minutes, you should be able to right-click on the applet and click "eth1" to connect.
'''Answer the Investigation 2 observations / questions in your lab log book.'''
=== Investigation 3: What files does the <code>system-config-network</code> GUI tool change?. ===
<li>View the <code>/root/netcfg.lst</code> file. What does it contain?</li>
<li>Create a new directory called: <code>/tmp/lab6</code></li>
<li>Issue the following commandcommands:
<ul>
<li><code>mkdir -p /tmp/lab6</code></li>
<li><code>find /etc -newer /tmp/timestamp -exec cp {} /tmp/lab6 \;</code></li>
</ul>
'''Answer the Investigation 3 observations / questions in your lab log book.'''
=== Investigation 4: How do I configure the network without a GUI tool? ===
#* List the contents of the directory and you should see 2 different types of files, network config scripts and network configuration files.
#* look for the config file for your original interface, it should be named <code>ifcfg-eth0</code>
#* Copy that file to <code>ifcfg-eth1eth<b>N</b></code> or whatever name matches where <b>N</b> relates to your current eth interfacenumber (we will use <b>eth1</b> as an example).
#* Edit the new file for you interface and give it the following settings:
#**DEVICE="eth1" <-- '''or the interface name YOU have '''
#**NM_CONTROLLED="yes"
#**IPV6INIT="no"
# Save the file and then restart the network connection by issuing the commands: <code>ifdown eth1</code> and then <code>ifup eth1</code><br /><br ><b>NOTE: </b>If there are errors, check that the hardware address in the config file matches the hardware address of the device its configuring<br /><br />
# Verify your configuration as you did before.
# Finally the kickstart file used to install this VM did not set the hostname. Edit the file <code>/etc/sysconfig/network</code> and set the hostname to <code>fedora3</code>
::1 localhost6.localdomain6 localhost6 fedora1
192.168.235.1 f16hostf17host
192.168.235.11 fedora1
192.168.235.12 fedora2
{{Admon/note | Use the f16host f17host | Complete the following steps on your '''f16hostf17host''' computer system.}}