Hey DevOps community folks! On Day 4 of my #90DaysOfDevOpsChallenge, I'm exploring the world of virtualization. Virtual machines (VMs) are an essential component of modern IT infrastructure, and understanding how to create and manage them is critical for anyone working in DevOps.

At its core, virtualization allows us to create multiple "virtual" instances of a physical machine. VMs are created and managed by a hypervisor, which is software that sits between the physical machine and the VMs. There are different ways to create VMs, including using a GUI tool provided by the hypervisor software, a command line tool like PowerShell or Terminal, or a cloud platform like AWS or Azure to create VMs on-demand.

To create a VM in simple steps, you can:

1) Choose a hypervisor software like VMware, Hyper-V, or VirtualBox.

2) Create a new VM instance and select the operating system you want to run.

3) Allocate resources like CPU, RAM, and storage to the VM.

4) Install the operating system and applications just as you would on a physical machine.

VMs are used in real-time projects to solve various requirements, such as:

1) A developer may need to test their application on multiple operating systems, which can be accomplished with multiple VMs.

2) A company may need to host a web server, database server, and application server on the same physical machine, which can be accomplished with multiple VMs running on a hypervisor.

3) A team may need to develop and test software in an isolated environment to avoid conflicts with other applications or systems, which can be accomplished with a VM.

5) In real life, virtualization has enabled companies like Netflix to deliver streaming video to millions of customers around the world. Netflix uses a virtualized infrastructure to efficiently allocate resources and scale up or down as needed. This allows them to handle peak demand periods, such as during major sporting events or season premieres, without sacrificing performance or reliability.

Servers are the physical machines that run the hypervisors and VMs. They can be located on-premises or in the cloud, depending on the needs of the organization. Understanding how to create and manage VMs is critical for anyone working in DevOps, as it enables more efficient use of resources and can help organizations scale their infrastructure.

If you're new to DevOps or IT in general, virtualization is a great place to start. Stay tuned for more insights as I continue my DevOps journey! #DevOps #Virtualization #Hypervisors #Servers #VirtualMachines

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