this post was submitted on 09 Apr 2024
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Linux
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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You can just install the tools you want on your host OS. But if it's like hundreds of tools then yeah makes more sense to run it inside a VM, just so it's all nice and separate from your daily-driver. And you may think it's funny but the performance of Linux-on-Linux is actually pretty good, and there isn't much of a RAM/CPU overhead either. And if you're really strapped for RAM, you could use KSM (kernel samepage merging) and ballooning.
Many Linux users use VMs (or containers) for separate workloads, and it's a completely normal thing to do. For instance, on my homelab box, my host OS is my daily-driver, but all my lab stuff (Kubernetes, Ansible etc) all run under VMs. The performance is so good that you won't even notice/care that it's running on a VM. This is all thanks to the Linux/KVM/QEMU/libvirt stack, if it were something else like VMWare or VBox, it'd be a lot more clunkier and you can feel that it's running on a VM - but that's not the case with KVM.
Awesome good to know, thank you for the info!