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[[Category:OSL840OPS335]][[Category:OSL840 OPS335 Labs]]
== OBJECTIVE & PREPARATION ==
This lab is a repeat of a portion of lab1 (and some of lab2) that you already performed in OSL740 plus some newer content that relates to this week's notes. You are expected to be able to complete all this using your existing skills and knowledge or refer back to your OSL640 OPS235 lab-book or OSL640 OPS235 WIKI notes.
In this is lab, you will install your '''host machine''' (Centos7), '''install virtualization software''', and '''create and install 3 nested virtual machines'''.
#* '''Seneca's mirror of CentOS:''' https://mirror.senecacollege.ca/centos/7/isos/x86_64/CentOS-7-x86_64-DVD-2009.iso <br>This is very fast, but is only accessible from within Seneca's network - you can't access this from home. You can burn this disc on the machines in the Open Lab.)<br><br>
#* '''Outside Seneca College link (available from any Internet connection):<br>''' https://mirror.netflash.net/centos/7.9.2009/isos/x86_64/CentOS-7-x86_64-DVD-2009.iso<br /><br>
# You need to refer to your OSL740 OPS235 notes in order to install your host machine.<br>Here is a direct link:<br> [https://wiki.cdot.senecacollege.ca/wiki/OPS245_Lab_1 OPS245 - Lab1]
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<li value=4>Customize your installation following these guidelines:
===Configuring a VM host===
# You will need to install some software to allow your machine to act as a host for virtual machines. We'll be using the same '''libvirt''' and '''virt-manager''' you used in [https://wiki.cdot.senecacollege.ca/wiki/OSL740_Lab_2 OSL740 OPS235_Lab_2 OPS235 - Lab2].<br>You may find it helpful to refer back to the '''OSL740 OPS235 notes''' to perform the following operations:
#* Install the required virtualization software
#* Start and enable the virtualization service
#* Stop and delete the '''default''' network.
#* Use the '''plus sign''' to add a new virtual network using the following options:
#:* Name your virtual network '''osl740ops235'''
#:* Use the '''last two digits of your student number for the third octet of network IP address''' (for example, if your student number is 000-000-0<b>90</b>, the network address would be 192.168.<b>90</b>.0/24.
#:* Ensure the DHCP range will allow you to assign '''at least 10 static IP addresses outside it''' (note: leave the low numbers available for static addresses).
{{Admon/tip|VM File Types ( '''.qcow2''' vs '''.img''' )|In OSL740OPS235, you selected the VM images as a '''"raw"''' image. In OSL840OPS335, you will be accepting the default image file '''".qcow2"''' (which stands for "QMENU Copy on Write version 2" ) that provides more features when manipulating stored VM images.}}
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{{Admon/important |Backup your VMs!|You MUST backup ALL of your VMs whenever you complete your '''OPS335 labs''' or when working on your '''OSL840 assignments''':<br>[ [https://wiki.cdot.senecacollege.ca/wiki/OSL740_Lab_2_OPS235_Lab_2_-_CentOS7_-_HD2#Part_1:_Backing_Up_Virtual_Machines Backing up Your Virtual Machines] ]. Refer to OPS235 lab2 notes on how to backup your VMs. You should backup your VMs to a USB key in case something happens to your host machine. Note: VM files contained in the '''/var/lib/libvirt/images''' directory have the extension in '''.qcow2''' and instead of '''.img''' (eg. for OSL740 OPS235 courses prior to Fall 2016.}}