Changes

:* Although this will be a simple install, this CentOS Operating System will be a platform (host) for other Virtual Machine CentOS installations (in future labs). Therefore, it is very important that you take the time to carefully read and perform ALL steps, and take time to check your work.

:* After performing the CentOS DVD installation, you will collect baseline information about your Fedora GNU/Linux system, and perform some post installation configuration to prepare your system for the remainder of the labs.

# Perform a GNU/Linux installation using the CentOS 6.5 6 distribution# Investigate information during and after the CentOS 6.5 6 installation

{{Admon/pagebreak}}==Required Materials (Bring to All Labs)==

* CentOS 6.5 6 x86_64 Installation DVD1

|'''Utilities:'''additional repositories

# Power up the computer and insert the '''CentOS 6.5 6 Installation DVD1''' into the DVD drive(refer to main OPS235 WIKI page on how to obtain Installation DVD).

<li>Select the option '''Install or upgrade existing system'''. When the Installation DVD boots, it will prompt the user to test the media (i.e. DVD) for integrity. Since time is limited for installation in the lab, select '''SKIP'''. On the other hand, if the install did not work, then you can test out the integrity of the DVD in the computer lab during your spare time.</li> <li>During the install process the user makes selections, then clicks the '''Next''' button located at the bottom right-hand portion of the screen to continue. Select the default language (English), the default keyboard layout and Basic Storage Devices in the following installation screens.</li>

<li>'''Root Password: ''' enter a password of your own choosing. Pick one that is hard to guess to protect your system. (Recommendation: use the first letter and all the punctuation from a favorite phrase or song verse. For example, "To be or not to be, that is the question!" could become the password "Tbontb,titq!").</li>

<li>Select '''Create Custom Layout''', we don't want to use the Fedora default setup now. If you are using a hard drive that contains partitions from a previous course (previous version of Linux), delete all partitions prior to proceeding.</li> <li>On your drive you will need the following partitions. These may be primary partitions or logical drives. Remember that the sizes are recorded in MB (eg. 20 GB = 20000 MB). If you have more space than 250GB available - you can add the extra space in equal parts to /home and /var/lib/libvirt/images</li> <ul><li>Primary Partitions (ext4): <ul> <li>'''20GB''' for '''/''' (i.e. "root")</li>

<li>'''8GB100GB''' for '''swap/var/lib/libvirt/images''' </li> </ul> </li> <li>Swap Partition: <ul> <li>'''8GB''' (Note: "swap" must be selected from the drop down menu)</li> </ul></li> </ul></li> <li>'''100GB''' for Take time to carefully verify the partition information'''. For example, if the pathname /var/lib/libvirt/images'''is misspelled, you would need to redo lab1!.</li></ul>

<li>Select in Accept the default settings to create the Bootloader and click next screen the .</li> <li>Make certain that '''Desktop''' applicationshave been selected, and accept the default settings in the '''additional repositories ''' section (at the bottom) accept the default settings, then proceed. You may look at what's available if you choose "Customize now" but you don't need to customize the software installed at this point.</li>

<li>When installation is complete, a screen will confirm completion, and will then ask the user to remove the DVD, and reboot the computer. Write in your lab log-book the time it took to perform this DVD Fedora install.</li> <li>Remove the Fedora Installation DVD, and click '''Reboot'''.</li>

<li>Remember to press F10 when restarting the computer, and select the your SATA drive to boot from your removable hard drive.</li> <li>When the system starts, set or accept the a one-time setup program will run to add regular user accounts, and to set date defaultand time.</li>

<li>Set or accept the time and date default. Normally, you would want to enable '''Network Time Protocol''', but since we will be experimenting with the networking turned off in later labs, '''leave it disabled'''.</li> <li>Accept all other defaults (you can ignore the Kdump feature). Finish the post-installation customization and then login to your computer account that you created.</li>

'''Answer the Investigation 1 observations (all parts) / questions in your lab log book.'''

For the rest of the tasks in this lab, you must login to your installed Fedora CentOS system using your regular user account (not root), open a terminal and execute the following listed Linux commands to obtain information for your lab-logbook (lab1). If you get a Permission Denied message when trying to execute a command, then switch to the '''superuser''' account by running the command '''su -''' and type in your password for "root" (which you know since you are the main administrator for your system). Once the intended command is executed, type "exit" to exit from the superuser account and return to your regular user account.

Navigate through your Graphical Fedora CentOS system, '''locate and run a terminal program (in order to issue Linux commands). Issue and record the commands used and the output generated in each of the following steps:'''

<li>View the section below to learn about and perform an update on your fresh Fedora CentOS install (you may have to find spare time to perform this install if you are running short on lab time). '''Do <u>not</u> proceed to Investigation 3 without performing an update'''.</li><li>The CentOS software is updated frequently to add features, fix bugs, and upgrade security. Perform a system update to get the latest versions of the packages installed: Start the Firefox web browser, turn off popup window blocking (select ''Edit>Preferences'', then select the Content tab and uncheck the box to Block Popups), then login to SeneNET. Open a terminal and type <code>su</code> to start a shell as root. Enter the command <code>yum update</code> This will download and install all of the packages that have been updated since the installation DVD image was created. If you complete this command at Seneca it should run quite fast as Seneca College hosts a CentOS Repository mirror (a copy of all of the current fedora CentOS packages, on a local web server).</li>

# Your system may not be automatically connected to Seneca's network. Locate the network icon (on top right-hand panel). Click on that icon, and select '''system eth0'''# Open a web-browser and log into Seneca's wired network. You will need to perform this set every time you start a new session with your computer to perform future labs.#Open a shell terminal.# To check the network configuration settings obtained from the DHCP server, run the following commands, describing the output in your log book:

{{Admon/important|SELinux|SELinux stands for '''Security-Enhanced Linux'''. It is a component that helps to better secure the system to protect against intrusion (hackers). Usually, SELinux is enabled upon the default install of FedoraCentOS. SELinux can be a good thing, if you take care of it and are aware that know how it is enabled or disabledworks. It For this course it is strongly recommended that you '''disable SELinux by default''' for this course, since you will be communicating with other virtual machines and can cause machines NOT because we won't have the time to communicatereconfigure it every time the labs make it necessary.}}

# Disabling SELinux on Fedora is actually quite simple, just edit the file '''/etc/selinux/config''' and change the following line set SELINUX to look like this:#* SELINUX=disabled.

* '''Task 1''' - Install GNU/Linux Workstation using Fedora CentOS

* '''Task 3''' - Fedora UpdatedUpdate CentOS

:* Hint: Can issue '''lsblk''' (listblock command)or '''blkid'''