k8s-image-pre-puller

K8S Image Pre Puller

It's a simple kubernetes operator that will help you automatically pre-pull docker images on nodes. This operator can be used for speed-up pod initialization in cluster.

How to use

Install

You can install this operator by installing it through Helm Chart

Create PrePullImage

When operator installed in cluster you can simply create resources like this:

apiVersion: v1
kind: PrePullImage
metadata:
  name: my-cool-image-pre-pull
  namespace: my-namespace
spec:
  image: "gcr.io/my-cool-image"
  nodeSelector: {} # You can specify selectors for pre-pull only on particular nodes

This operator automatically will create a DaemonSet for create pre-pulling pods on every existing node.

IMPORTANT: This operator creates a DaemonSet and it will create Pod's in cluster - this pods will consume resources according to configuration. It's important to have monitoring about this resources.