minhnt812018 / kube-imagepuller

Pull container images to your nodes so that they are already present when containers are launched

Pull container images to your nodes so that they are already present when containers are launched.

This repo was created following this gist: https://gist.github.com/itaysk/7bc3e56d69c4d72a549286d98fd557dd from this blog post: http://blog.itaysk.com/2017/12/26/the-single-use-daemonset-pattern-and-prepulling-images-in-kubernetes.

Usage

With Helm

See the Helm chart readme for comperhansive information, here's an example:

git pull https://github.com/itaysk/kube-imagepuller
cd kube-imagepuller
helm install imagepuller --set src.image=docker://index.docker.io/from/this:tag --set dst.image=docker-daemon:to/that:tag

Without Helm

You can use imagepuller.yaml which is generated from the Helm chart using

helm template imagepuller > imagepuller.yaml

1. Download the rendered manifest:

curl -L -O https://raw.githubusercontent.com/itaysk/kube-imagepuller/master/imagepuller.yaml

2. Edit the important parameters, most importantly the source, and destination images at:

spec.template.spec.initContainers[0].command

3. Create in Kubernetes:

kubectl create -f imagepuller.yaml