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.
You can install this operator by installing it through Helm Chart
When operator installed in cluster you can simply create resources like this:
apiVersion: images.cdayz.k8s.extensions/v1
kind: PrePullImage
metadata:
name: my-cool-image-pre-pull
namespace: my-namespace
spec:
image: "gcr.io/my-cool-image"Or you can specify nodeSelector to pre-pull image only on particular nodes.
apiVersion: images.cdayz.k8s.extensions/v1
kind: PrePullImage
metadata:
name: my-cool-image-pre-pull
namespace: my-namespace
spec:
image: "gcr.io/my-cool-image"
nodeSelector:
ssd: "true"
feature.nvidia-runtime: "true"
...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.