From the course: Linux Foundation Certified System Administrator (LFCS) Cert Prep

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Manage and configure virtual machines

Manage and configure virtual machines - Linux Tutorial

From the course: Linux Foundation Certified System Administrator (LFCS) Cert Prep

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Manage and configure virtual machines

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- [Instructor] In software, we can create a virtual computer on our real computer. These simulated computers are called virtual machines, and they can be very useful on servers. Here's an example. Imagine we have a powerful server with 64 CPU cores and 1024 Gig of RAM. If we create 32 virtual machines, each one would have two virtual CPUs, which are also called VCPUs, and 32 gigs of RAM. Now, instead of renting one big physical server to just one client, we can rent our smaller virtual servers to 32 clients. That's what cloud compute companies, like Digital Ocean, Amazon Web Services, and Google Cloud use to sell some of their services to thousands of clients. There are many software solutions out there to create this kind of setup, but in Linux, the most popular at the moment, is QEMU-KVM. These are actually two pieces of software that interconnect. The name QEMU comes from quick emulator. This emulates or simulates a virtual computer. KVM comes from kernel-based virtual machine…

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