OS virtualization
The topic of this book is associated with OS virtualization. OS virtualization enables the kernel to be shared across multiple processes inside a single VM with isolation. OS virtualization is also called user-mode or user-space virtualization as it is one level up from the kernel. Individual user-space instances are called containers. The kernel provides all the features for resource management across containers.
This is highly helpful while consolidating a set of services spread across multiple servers into a single server. Few benefits of OS virtualization are high security due to reduced surface of contact for a breach or viruses, better resource management, easy migration of applications or services across hosts, and ...
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