Linux Virtualization: Add Guest Addition To CentOS 8 Stream For Fullscreen Mode

 I've done a post on this before, but it was for an older version of Linux CentOS it no longer works for CentOS 8 Stream.  So instead of updating the existing post, I am doing another post so it won't confuse you.  The older post is for older version of CentOS and this one is for CentOS 8

The first thing you noticed after your install of CentOS on VirtualBox is that it's pretty small even if you put it in Fullscreen mode, it doesn't not fill the whole screen at all, as a matter of fact the size stayed the same.

In this post we are going to install the Guest Addition tool in VirtualBox to make the VM fullscreen truly fullscreen. 

Here are the steps to make the VM fullscreen:

1. Log into your system as root

2. Run dnf update -y, if you have no internet access type dhclient -v to get access

3. Next we want to install Red Hat's repository of tools with this command dnf install epel-release

4. Once the update is finished run the command dnf install gcc make perl kernel-devel kernel-headers bzip2 dkms -y to install headers and build tools

9. Type in the root password and click on "Authenticate"

10. If you don't see your VM going fullscreen, then try reboot

11. Once rebooted click on "View", then "Full-screen Mode" to use your VM in fullscreen mode

Linux Storage Management: Adding A New Disk In Oracle VirtualBox

 To simulate a real world scenario often times you have to add components to your virtualize Linux operating system.  In this post we are going to add a new disk to our virtual machine in Oracle's VirtualBox.  

Here are the steps to adding a new disk to a VM:

1.  Right click on your virtual machine and select settings then select "Storage", the power must be off.  Click on the second icon next to the "Controller: SATA" section

2. On the next dialog click on the "Create" icon

3. Click "Next"

4. Click "Next"

5. Type in a name for the disk and then click "Create"

6. Select the disk under "Not Attached" and then click on "Choose"

7. Now your new disk is attached to the Virtual Machine, click "OK"

Linux CentOS In-Depth: Create Azure CentOS Virtual Machine in New Portal

In our previous blog post we installed CentOS on our local virtualization software call VirtualBox.  In this blog we are going to go through how we are going to do the same in Azure, and host our CentOS server on the cloud.

People often get confused when they work with Azure because there are two versions of Azure.  Most people call it the classic mode and the new portal Azure or the more official term is ASM vs ARM.  In this post we will create a CentOS Linux virtual machine in the new Azure portal.

Linux CentOS In-Depth: Connect To CentOS Using Putty SSH

In most environments you are not allowed to have direct access to the Linux server.  The most common way to gain access is through a secure shell connection or SSH.  The most common tool that is used on a Windows environment to connect to Linux is a utility software call Putty. In this post we are going to connect to our CentOS instance that we've installed on VirtualBox.

Linux CentOS In-Depth: Installing the Gnome Desktop Environment

In previous blog we've installed the CentOS operating system on VirtualBox however, when we reboot, it takes us to a text prompt.  In this blog we will be installing a graphical desktop environment to our operating system using "yum".  Follow the steps below to get the Gnome desktop in your CentOS.

1.  Make sure you have internet connection
2.  Click "Start" on your "CentOS" VM

Linux CentOS In-Depth: Installing CentOS On VirtualBox

If you are a startup or an entrepreneur, learning Linux is essential. Most of the open source and latest innovations starts out with Linux such as Docker.  That's because Linux is for the most part free and has a great community of techies supporting it.  Even Microsoft loves Linux now, it even made a commitment by releasing SQL Server on Linux.  Although it could  be a fling, instead of a long term engagement.  Also if you noticed the Virtual Machines on the clouds are cheaper if you choose the Linux version.  In this series on Linux I will go over what you need to do to get yourself started on Linux.  The best way to learn about Linux is to install it on a Virtual Machine.  We could host it on the cloud, but then we need to pay for it.  There are some free-tiers but they are limited.  So we are going to use VirtualBox from Oracle to host our CentOS instance.

On the previous blog we went over how to create a new virtual machine for CentOS in VirtualBox.  In this blog we will go over how to install the CentOS ISO file on the new virtual machine that we've just created. Below are the step by step instructions of how to install CentOS on VirtualBox.

Linux CentOS In-Depth: Create A New Virtual Machine for CentOS

If you want to know your way around Red Hat Enterprise Linux distribution, but the you don't have the financial ability to obtain a license.  CentOS is your best bet get to the the Red Hat Enterprise Linux official experience.  Because CentOS is a binary compatible version of Red Hat Enterprise Linux.  Meaning all the things that matters are the same, only the branding and logos are different.  CentOS is open sourced and can be downloaded for free.  Although it might be a couple of versions behind Red Hat Enterprise Linux.  But, you should be able to perform everything you can with CentOS that you can with Red Hat Enterprise.  Below is a step by step instruction on how to install CentOS in Oracle VirtualBox.

Install CentOS on VirtualBox Part 3 : Installing the Gnome Desktop Environment

In previous blog we've installed the CentOS operating system on VirtualBox however, when we reboot, it takes us to a text prompt.  In this blog we will be installing a graphical desktop environment to our operating system using "yum".  Follow the steps below to get the Gnome desktop in your CentOS.

1.  Make sure you have internet connection
2.  Click "Start" on your "CentOS" VM