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Sysbox

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description Sysbox Overview

Sysbox is a containerization technology that isolates applications within lightweight virtual machines, providing stronger security and reproducibility compared to traditional Linux containers by leveraging hardware virtualization.

help Sysbox FAQ

What is Sysbox?

Sysbox is an open-source container runtime technology created by Nestybox that uses a lightweight virtual-machine layer to isolate workloads. It is designed for workloads that need stronger separation or that expect to behave like a full Linux system.

How is Sysbox different from ordinary Linux containers?

Traditional containers share the host Linux kernel directly, while Sysbox adds stronger isolation through a virtual-machine boundary and a specialized runtime. This can help run system containers, nested containers, or software that expects init and other operating-system services.

Can Sysbox run Docker inside a container?

Sysbox was designed to support nested container use cases, including running Docker or Kubernetes-related workloads inside an isolated system container. The exact setup depends on the host runtime and the Sysbox version.

Is Sysbox a virtual machine or a container runtime?

Sysbox is a container runtime technology that provides virtual-machine-like isolation for containers. It does not turn every workload into a conventional full virtual machine, but it gives system containers a stronger isolation model than standard containers.

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