Nowadays Linux operating system’s popularity is increasing. Most of the servers are using the Linux Operating System, and personal system also start using various Linux distribution. CentOS is one of the popular Linux operating systems.
These days most of the IT professionals learning Linux, as their work environment around Linux based open source and free operating system.
As per my experience, when you are learning anything and for a silly mistake, you are going to format the entire system and reinstall, again and again, the learning period going to be very frustrating and bored.
So, I am suggesting you to at learning time use a virtual environment to configure any Linux and use if any mistake will happen you need to reinstall the only virtual machine, not the system. Or you can keep the previous virtual machine for your experiment to learn to troubleshoot the problem and parallelly you can run new vm to move your learning ahead.
Here, in this article, I am going to explain “How to install CentOS 7 in VMware workstation?”. You can use any other virtual environment also like Virtualbox, VMware Player, KVM, etc.
Prerequisites – CentOS 7 installation
Anyone application is enough for a virtual environment, I am going to use here VMware Workstation, but the overall process of installation is the same for all virtual environment package.
Open VMware workstation application to start the installation of CentOS 7 operating system.
you will get the first screen in workstation like below image, and here click on “Create a New Virtual Machine” button.
There are two option you will get when start preparing
- Typical (recommended)
- Custom (advanced)
I choose here Custom setup, so can show you all option to configure in VMware.
In this window, you can choose hardware compatibility for your virtual machine. As I am using VMware workstation version 12 Pro, so I configured my virtual machine compatibilities according to configured in this version and choose “Workstation 12.0” for Hardware compatibility.
VMware Installation Media Configuration
After selection of hardware compatibility, a new window will appear for installation media selection, where three options are available:
- Installer disc
- Installer disc image file (iso)
- I will install the operating system later
If you are going to install through operating system CD/DVD disc, you should select “Installer disc”. After selection of this option, you have to select CD/DVD ROM driver.
If you are using an operating system iso file, please click on the “Browse” button and select the image file.
If you are just preparing a virtual machine with the configuration where the operating system will install later, just select “I will install the operating system later” option.
Here, I am going to install through iso file, so I choose “Installer disc image file (iso)” and click on the “Browse” button.
After clicking on “Browser” button a new window will appear, where you need to go to the location of iso file and select the iso file.
When you select your operating system disc file it will appear in “installer media selection window” like below image.
Now, click on “Next” button for further configuration.
In this window “Personalize Linux” you can fill the form for username and password, which will be on new installed operating system’s default username and password.
In case of the CentOS operating system, it will not configure for the operating system but go to the next option we need to fill the form.
In the next window, you can select the desired name for the virtual machine and location where this virtual machine will store in system storage.
The window will similar like below image.
VMware CPU Configuration
In this window, we configuring processors for the virtual machine.
The options are to select numbers of processors and numbers of cores per processors and after selection of these, click on the “Next” button for further configuration.
VMware RAM Configuration
Similarly CPU configuration, in this window we configure RAM for the virtual machine and after selection of RAM quantity click on the “Next” button for further configuration.
VMware Network Configuration
The new window appears for virtual machine network configuration, where we get four option to select like below image;
- Use bridged networking
- Use network address translation (NAT)
- Use host-only networking
- Do not use a network connection
If we want to configure our virtual machine to connect directly with the network and get the IP address from the main network device, we should select “Use bridged networking”.
If we want to configure your networking with our host networking and NAT with the host IP address, we should select “Use network address translation(NAT)”.
Choose “Use host-only networking” if we don’t want to configure independent networking on our virtual machine and use network from the host interface.
The last option “Do not use a network connection” is for if we don’t want to use networking in our virtual machine.
Now, I select “Use bridged networking” as I am using my virtual machine network connectivity directly from the network device without the intervention of the host network.
VMware I/O controller Configuration
The new window will appear for I/O controller configuration with three option like below image:
- LSI Logic
- LSI Logic SAS
Bus Logic is not available for the 64-bit arch operating system, and I am using here Ubuntu 16.04 64-bit operating system so it is in disabled mode.
I am not using any SAS device also so not choosing “LSI Logic SAS” option also, so I choose here “LSI Logic” option and click on the “Next” button for further configuration.
VMware Virtual Disk Configuration
Next window is for virtual disk type configuration with options are:
I suggest choosing the “SCSI” option which is most used by the virtual machine.
In this window, we are configuring virtual disk with below options:
- Create a new virtual disk
- Use an existing virtual disk
- Use a physical disk
Here we will choose “Create a new virtual disk” as we are going to install a new virtual machine.
In this window, we are configuring the size of the virtual disk, for this operating system we configured 20 GB as you can see in below image.
If you select “Allocate all disk space now” option it will take all 20 GB storage from the beginning otherwise it will take only storage which is used by the virtual machine.
This window is used for naming and locating of the virtual disk file.
VMware Hardware Configuration Review
Now, VMware configuration for the new virtual machine is done. this window is summary for all configuration and there is “Customize Hardware…” button which you can use for reconfiguration of any hardware configuration like CPU, RAM etc.
Now Click on “Next” button to finish the virtual machine configuration.
Now, VMware workstation main window will appear with a new tab of new virtual machine “CentOS 7”.
Here, click on the “Power on this virtual machine” link to start the virtual machine.
Boot Virtual Machine with CentOS ISO
After starting virtual machine you will get below window which is virtual machine booting and VMware logo displaying at booting time.
This new window showing now our new virtual machine booting with CentOS installation media and it is ready to install.
New screen will appear with CentOS installation progress bar.
This is the same screen when installation process about to complete.
After 15 min when CentOS installation process completed, virtual machine booted and after complete boot the new screen for login is coming like below image.
After login we will on the CentOS desktop, which is similar like below screen.