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Nydus-snapshotter Helm Chart

Artifact Hub

TL;DR

helm repo add dragonfly https://dragonflyoss.github.io/helm-charts/
helm install --create-namespace --namespace nydus-snapshotter nydus-snapshotter dragonfly/nydus-snapshotter

Introduction

Nydus snapshotter is an external plugin of containerd for Nydus image service which implements a chunk-based content-addressable filesystem on top of a called RAFS (Registry Acceleration File System) format that improves the current OCI image specification, in terms of container launching speed, image space, and network bandwidth efficiency, as well as data integrity with several runtime backends: FUSE, virtiofs and in-kernel EROFS.

Nydus supports lazy pulling feature since pulling image is one of the time-consuming steps in the container lifecycle. Lazy pulling here means a container can run even the image is partially available and necessary chunks of the image are fetched on-demand. Apart from that, Nydus also supports (e)Stargz lazy pulling directly WITHOUT any explicit conversion.

For more details about how to build Nydus container image, please refer to nydusify conversion tool and acceld.

Prerequisites

  • Kubernetes cluster 1.20+
  • Helm v3.8.0+

Installation Guide

For more detail about installation is available in nydus-snapshotter repo.

Installation

Install with custom configuration

Create the values.yaml configuration file.

nydusSnapshotter:
  name: nydus-snapshotter
  image: ghcr.io/containerd/nydus-snapshotter
  tag: v0.13.4

Install nydus-snapshotter chart with release name nydus-snapshotter:

helm repo add dragonfly https://dragonflyoss.github.io/helm-charts/
helm install --create-namespace --namespace nydus-snapshotter nydus-snapshotter dragonfly/nydus-snapshotter -f values.yaml

Uninstall

Uninstall the nydus-snapshotter daemonset:

helm delete nydus-snapshotter --namespace nydus-snapshotter

Values

Key Type Default Description
args list [] Args to overwrite default nydus-snapshotter startup command
containerRuntime object {"containerd":{"configFile":"/etc/containerd/config.toml","enable":true},"initContainer":{"image":{"pullPolicy":"Always","registry":"ghcr.io","repository":"liubin/toml-cli","tag":"v0.0.7"}}} [Experimental] Container runtime support Choose special container runtime in Kubernetes. Support: Containerd, Docker, CRI-O
containerRuntime.containerd object {"configFile":"/etc/containerd/config.toml","enable":true} [Experimental] Containerd support
containerRuntime.containerd.configFile string "/etc/containerd/config.toml" Custom config path directory, default is /etc/containerd/config.toml
containerRuntime.containerd.enable bool true Enable containerd support Inject nydus-snapshotter config into ${containerRuntime.containerd.configFile},
containerRuntime.initContainer.image.pullPolicy string "Always" Image pull policy.
containerRuntime.initContainer.image.registry string "ghcr.io" Image registry.
containerRuntime.initContainer.image.repository string "liubin/toml-cli" Image repository.
containerRuntime.initContainer.image.tag string "v0.0.7" Image tag.
daemonsetAnnotations object {} Daemonset annotations
dragonfly.enable bool true Enable dragonfly
dragonfly.mirrorConfig[0].auth_through bool false
dragonfly.mirrorConfig[0].headers.X-Dragonfly-Registry string "https://index.docker.io"
dragonfly.mirrorConfig[0].host string "http://127.0.0.1:4001"
dragonfly.mirrorConfig[0].ping_url string "http://127.0.0.1:4003/healthy"
global.imagePullSecrets list [] Global Docker registry secret names as an array.
global.imageRegistry string "" Global Docker image registry.
global.nodeSelector object {} Global node labels for pod assignment.
hostAliases list [] Host Aliases
hostNetwork bool true Let nydus-snapshotter run in host network
hostPid bool true Let nydus-snapshotter use the host's pid namespace
image.pullPolicy string "Always" Image pull policy.
image.pullSecrets list [] (defaults to global.imagePullSecrets). Image pull secrets.
image.registry string "ghcr.io" Image registry.
image.repository string "containerd/nydus-snapshotter" Image repository.
image.tag string "v0.9.0" Image tag.
name string "nydus-snapshotter" nydus-snapshotter name
nodeSelector object {} Node labels for pod assignment
podAnnotations object {} Pod annotations
podLabels object {} Pod labels
priorityClassName string "" Pod priorityClassName
resources object {"limits":{"cpu":"2","memory":"2Gi"},"requests":{"cpu":"0","memory":"0"}} Pod resource requests and limits
terminationGracePeriodSeconds string nil Pod terminationGracePeriodSeconds
tolerations list [] List of node taints to tolerate

Chart dependencies

Repository Name Version