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54 lines
2.0 KiB
Markdown
54 lines
2.0 KiB
Markdown
# Hypervisors
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## Introduction
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Kata Containers supports multiple hypervisors. This document provides a very
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high level overview of the available hypervisors, giving suggestions as to
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which hypervisors you may wish to investigate further.
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> **Note:**
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>
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> This document is not prescriptive or authoritative:
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>
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> - It is up to you to decide which hypervisors may be most appropriate for
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> your use-case.
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> - Refer to the official documentation for each hypervisor for further details.
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## Types
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| Hypervisor | Written in | Architectures | GPU Support | Intel TDX | AMD SEV-SNP |
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|[Cloud Hypervisor](#cloud-hypervisor) | rust | `aarch64`, `x86_64` | :x: | :x: | :x: |
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|[Firecracker](#firecracker) | rust | `aarch64`, `x86_64` | :x: | :x: | :x: |
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|[QEMU](#qemu) | C | all | :white_check_mark: | :white_check_mark: | :white_check_mark: |
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|[Dragonball](#dragonball) | rust | `aarch64`, `x86_64` | :x: | :x: | :x: |
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|StratoVirt | rust | `aarch64`, `x86_64` | :x: | :x: | :x: |
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Each Kata runtime is configured for a specific hypervisor through the runtime's configuration file. For example:
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```toml title="/opt/kata/share/defaults/kata-containers/configuration.toml"
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[hypervisor.qemu]
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path = "/opt/kata/bin/qemu-system-x86_64"
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```
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```toml title="/opt/kata/share/defaults/kata-containers/configuration-clh.toml"
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[hypervisor.clh]
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path = "/opt/kata/bin/cloud-hypervisor"
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```
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## Cloud Hypervisor
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[Cloud Hypervisor](https://www.cloudhypervisor.org/) is a more modern hypervisor written in Rust.
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## Firecracker
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[Firecracker](https://firecracker-microvm.github.io/) is a minimal and lightweight hypervisor created for the AWS Lambda product.
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## QEMU
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QEMU is the best supported hypervisor for NVIDIA-based GPUs and for confidential computing use-cases (such as Intel TDX and AMD SEV-SNP). Runtimes that use this are normally named `kata-qemu-nvidia-gpu-*`. The Kata project focuses primarily on QEMU runtimes for GPU support.
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## Dragonball
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Dragonball is a special hypervisor created by the Ant Group that runs in the same process as the Rust-based containerd shim.
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