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=LAB PREPARATION=
[[Image:vmware-1a-rhel.png|thumb|right|450px|The VMware Workstation application will allow you to create and administer '''4 different virtual machines''' ('''VM'''s) on your computer system. ]]
===Purpose of Lab 1===
| |[[Image:ssd.png|thumb|left|175px|<b>Solid State Drive</b><br>Minimum Size: 250GB]]
| [[Image:log-book.png|thumb|left|100px|<b>Lab Logbook</b><br>[[:Media:OPS245-Logbook-Online.doc|(lab 1Click Here to Download)]]]]
| style="padding-left:15px;" |Package Management
| style="padding-left:15px;"|Matrix on-line tutorials<br><ul><li>Linux Basics:<br>'''/home/ops235/linux-basics'''</li><li>Using the vi Text Editor:<br>'''/home/ops235/vi-tutorial'''</li><li>Shell Scripting - Part I (Scripting Basics):<br>'''/home/ops235/scripting-1'''</li></ul>
|}
= INVESTIGATION 1: CREATING A RED HAT ACCOUNT AND DOWNLOADING THE ISO =
'''<u>r7host r9host VM Details:</u>'''
*'''Name:''' r9host
|-
|
[[Image:partition_verificationRhel_Partition_verification.png|thumb|right|450px|Carefully verify partition mount-names and sizes prior to proceeding with install. Check [http://matrix.senecac.on.ca/~murray.saul/ops235/installation/ installation screenshots] link for verification.]]
|}
::'''Connect to Red Hat:'''<ul><li>Enter the '''User name''' and '''Password''' for the account you created in '''Investigation 1'''.</li><li>Under '''Purpose''' Check the box that says '''Set System Purpose'''</li><li>For '''Role''' select '''Red Hat Enterprise Linux Server'''</li><li>For '''SLA''' select '''Self-Support'''</li><li>For '''Usage''' select '''Production'''</li><li>Check the box that says '''Connect to Red Hat Insights'''</li><li>Click '''Register'''. This may take a few minutes.</li><li>Click '''Done'''.</li></ul><br>
# Open Terminal.
# Type: <b><code><span style="color:#3366CC;font-size:1.3em;">sudo yum dnf update</span></code></b>
# Follow the prompts.
# If there is a kernel update, reboot your system. (There usually is on a first update after OS installation.)
:'''Perform the Following Steps:'''
<ol>
<li>Install Check if python3 is installed on your Centos RHEL Host machine. Open a terminal and type:</li><code style="color:#3366CC;font-family:courier;font-size:.9em;margin-left:20px;font-weight:bold;">which python3</code><li>The output should of the previous command should show python3 is already installed. If it is not, install python3 on your RHEL Host machine.</li>
<code style="color:#3366CC;font-family:courier;font-size:.9em;margin-left:20px;font-weight:bold;">
sudo yum dnf install python3
</code>
<li><ul><li>Create a new file in your '''~/bin''' directory called '''myreport.py'''</li>
<li>Add a line that will print out the heading '''System Report'''<br />
<code style="color:#3366CC;font-family:courier;font-size:.9em;margin-left:20px;font-weight:bold;">
print('System Report\n')
</code>
</li>
<li>Save your script and run it. Does it work?</li>
<li>You'll notice that the python script is currently sending its output to your terminal. Since we haven't covered how to write to a file yet, this is ok for now. Just use output redirection on the command line when you run the script to send the output to '''~/bin/pythonreport.txt'''.</li>
<li>Add Open your script in a text editor (like Vi) again, and add the following lines below the print statement:</li><pre style="color:#3366CC;font-family:courier;font-size:.9em;margin-left:20px;># Import the Operating System moduleimport os # Print a heading for the date command outputprint('Current Date:') # Call the date command using the os moduleos.system("date +'%A %B %d, %Y (%I:%M %p)'")</pre><li>Save your script and run it again. Observe the output. What do you think the os.system command did?</li><li>Based on the above example and output, add the extra commands for your python script to also output (with appropriate headings):
<ul>
<li>The hostname of the machine.</li>
<li>The kernel version.</li>
</ul>
</li>
<li>Run your script to make sure it works. Note that the output does not need to match investigation 3 4 exactly, but it should be very close.</li>
</ol>
Shell scripting is <u>so essential</u> for Linux administration that this course has created a shell script for every lab for this course that a student must download and run in order to check their work.
If you have performed the lab correctly, then you will get a series of <b><code><span style="color:#66cc00;border:thin solid black;font-size:1.2em;"> OK </span></code></b> messages and you can proceed with the SIGN-OFF for lab1. On the other hand, if there were errors, then a <b><code><span style="color:#ff0000;border:thin solid black;font-size:1.2em;"> WARNING </span></code></b> message will appear with general suggestions that you will need to fix on your c7hostVM r9hostVM in order to have your professor sign-off in this lab in order to proceed to the next lab.
:'''Perform the Following Steps:'''
# Make certain that your '''c7hostr9host''' VM is running, open the Bash Shell terminal.<br><br># Change to the '''~/bin''' directory.# Install git by issuing the following command: <code>sudo dnf -y install git</code># Download all the lab check scripts into your bin directory: <brcode>git clone https://github.com/ops245/labs/ /home/your-seneca-id/bin<br/code><!-- #Download the checking script by issuing the following Linux command:<br><b><code><span style="color:#3366CC;font-size:1.2em;">wget https://raw.githubusercontent.com/OPS245/labs/main/lab1-check.bash</span></code></b><br><!--For Andrew's sections use this script instead:<br><b><code><span style="color:#3366CC;font-size:1.2em;">wget http://littlesvr.ca/ops245/lab1-check-andrew.bash</span></code></b><br>--><br># Give that downloaded shell script file execute permissions (for the file owner).<br><br># Run the shell script using '''sudo''' and if there are any warnings, make fixes and re-run shell script until you receive a "congratulations" message.: <brcode>sudo ./lab1-check.bash<br/code>#Arrange evidence (command output) for each of these items on your screen:
::<span style="color:green;font-size:1.5em;">✓</span> Run the '''lab1-check.bash''' script (must have all <span style="color:#66cc00;border:thin solid black;font-size:1.2em;"> OK </span> messages, and the congratulations message)
::<span style="color:green;font-size:1.5em;">✓</span> Proof that c7host r9host VM is set for '''virtualization''' (Refer to: '''INVESTIGATION 12''' - '''Part 1''' - '''Step #29''')
: 78. Take a screenshot of the evidence and upload it, the file generated by the lab1-check.bash script, your logbook, and your myreport.py to blackboard.
= Practice For Quizzes, Tests, Midterm & Final Exam =
# Define the term Virtual Machine.
# List the major screens (steps) in the installation of CentOS 7 Red Hat Enterprise Linux 9 full install DVD.
# What key-combination is used to toggle the view of your running VM from "window-mode" to "full-screen-mode"?
# List the steps for setting SELinux to permissive mode.