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kata-containers/docs/how-to/how-to-use-virtio-fs-nydus-with-kata.md
luodaowen.backend 2d9f89aec7 feature(nydusd): add nydusd support to introduse lazyload ability 
Pulling image is the most time-consuming step in the container lifecycle. This PR
introduse nydus to kata container, it can lazily pull image when container start. So it
can speed up kata container create and start.

Fixes #2724

Signed-off-by: luodaowen.backend <luodaowen.backend@bytedance.com>
2022-02-11 21:41:17 +08:00

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Kata Containers with virtio-fs-nydus

Introduction

Refer to kata-nydus-design

How to

You can use Kata Containers with nydus as follows,

  1. Use nydus latest branch;

  2. Deploy nydus environment as Nydus Setup for Containerd Environment;

  3. Start nydus-snapshotter with enable_nydus_overlayfs enabled;

  4. Use kata-containers latest branch to compile and build kata-containers.img;

  5. Update configuration-qemu.toml to include:

shared_fs = "virtio-fs-nydus"
virtio_fs_daemon = "<nydusd binary path>"
virtio_fs_extra_args = []
  1. run crictl run -r kata-qemu nydus-container.yaml nydus-sandbox.yaml;

The nydus-sandbox.yaml looks like below:

metadata:
  attempt: 1
  name: nydus-sandbox
  namespace: default
log_directory: /tmp
linux:
  security_context:
    namespace_options:
      network: 2
annotations:
  "io.containerd.osfeature": "nydus.remoteimage.v1"

The nydus-container.yaml looks like below:

metadata:
  name: nydus-container
image:
  image: localhost:5000/ubuntu-nydus:latest
command:
  - /bin/sleep
args:
  - 600
log_path: container.1.log