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Run a container in a VM with nested virtualization

Submitted by on September 22, 2018 – 1:38 amNo Comment

It’s possible to run a container in a VM using nested virtualization, but this added complexity can lead to problems in the virtual environment, such as instance incompatibility. Containers are a form of virtualization that bear some similarities to traditional hypervisor-based VMs, but they differ in some key respects. The principal difference between containers and VMs is that VMs operate in complete isolation from one another; each VM requires a separate and complete suite of OSes and drivers. This means VMs tend to be large, resource-heavy instances.

By comparison, containers share a common underlying OS kernel, which offers weaker isolation, but results in far smaller, more resource-lean instances that can start and stop faster. Containers are usually regarded as the more flexible and scalable virtual instance type. Ultimately, container platforms such as Docker provide the native virtualization used by containers.

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