Create new k8s cluster on-prem using docker as CRI

Kubernetes
#1

Hi

I have one task in my org where I have to set up new k8s cluster where I need to use docker as CRI. Can anyone guide me here how can I do that. As with latest k8s docker is not directly supported as CRI. We have to integrate it with cri-docked
(internet access is not there to these nodes we have do it using .RPM)

#2

You’ll want to look at the cri-dockerd doc page, which will lead you to where to download the RPMs. This is the way.

#3

Using docker as the CRI will incur a performance penalty. Creating a pod goes

kubelet -> cri-dockerd -> docker daemon -> containerd -> Pod running

Not using docker

kubelet -> containerd -> Pod running

containerd is the CRI engine inside docker daemon. Docker extracted it to a standalone executable as part of the generic CRI initiative. You should be able to get it as RPM.