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While you are performing this lab, it is recommended to generally note the major differences in the different installation methods, and which method you prefer to use if you were a Linux system administrator in charge of installing many Linux distributions for an organization.
<u>Main Objectives</u>
* Installing additional Virtualization Software on your '''c7host''' machine ('''KVM''')
* '''Create 3 separate VMs (virtual machines) using different installation methods:'''
:* '''centos1''': Network Centos CentOS Installation ('''Graphical'''):* '''centos2''': Network Centos CentOS Installation (minimal install - '''CLI only'''):* '''centos3''': Network Centos CentOS Installation with Kickstart configuration file ('''CLI only''')
* Manipulate virtual machines by CLI ('''virsh''')
* Properly '''backup VM images''' and backup '''VM configuration files'''
{{Admon/note|About KVM|There are actually several key programs installed for virtualization using KVM:<ul><li>'''kvm/qemu''' - the hypervisor and other hardware emulation systems.</li><li>A system service named '''libvirtd''' that manages the VMs.</li><li>A graphical tool for managing virtual machines ('''virt-manager''') and the '''virsh''' command-line tool.</li></ul>}}
|}
</li><li>Start the virtualization service: <b><code><span style="color:#3366CC;font-size:1.2em;">systemctl start libvirtd</span></code></b><br><br>'''NOTE:''' The most recent variants of Centos CentOS and Fedora are using a service called '''firewalld''' that is intended to replace '''iptables''', however the ''iptables'' service is still in relatively common usage. In this course we will concentrate on ''iptables''.<br><br></li><li>To Disable disable and remove firewalld , issue the following commands:<br>
<b><code><span style="color:#3366CC;font-size:1.2em;">systemctl disable firewalld</span></code></b><br>
<b><code><span style="color:#3366CC;font-size:1.2em;">systemctl stop firewalld</span></code></b><br>
<b><code><span style="color:#3366CC;font-size:1.2em;">yum remove firewalld</span></code></b><br>
<br></li>
<li>To install and enable the IPTables services, issue the following commands:<br>
<ol>
<li value="8">Start the graphical tool by selecting the menu options '''Applications'''>'''System Tools'''>'''Virtual Machine Manager''' or by typing the command<b><code><span style="color:#3366CC;font-size:1.2em;"> virt-manager</span></code></b></li>
<li>You will be learning in the next investigation to perform several different type types of CENTOS CentOS Linux installs.</li>
</ol>
:: '''VM Name (and hostname):''' centos1
:: '''Boot media:''' Network installation
:: '''Centos CentOS Full Network Install URL:'''
:::*Seneca Lab: https://mirror.senecacollege.ca/centos/7/os/x86_64/
:::*Home: http://mirror.netflash.net/centos/7/os/x86_64/
:: '''VM Name (and hostname):''' centos2
:: '''Boot media:''' Network installation
:: '''Centos CentOS Full Network Install URL:'''
:::*Seneca Lab: https://mirror.senecacollege.ca/centos/7/os/x86_64/
:::*Home: http://mirror.netflash.net/centos/7/os/x86_64/
:: '''VM Name (and hostname):''' centos3
:: '''Boot media:''' Network installation
:: '''Centos7 CentOS 7 Full Install Network URL:'''
:::*Seneca Lab: https://mirror.senecacollege.ca/centos/7/os/x86_64/
:::*Home: http://mirror.netflash.net/centos/7/os/x86_64/