Default CNI in Minikube

Question

I try to understand the Kubernetes network and I am now wondering if a CNI is used per default when installing Minikube and when yes which one?

In other words, can I run Minikube without a CNI provider like Flannel or Calico?

Pietro

Answer 1

By default Minikube runs on Docker default bridge-network, so the answer should be yes. You have to separately install other CNI providers, like Flannel.

For specific networking requirements, Minikube docs could be checked out.

Tristram

Could you please add a link where you found this info? I did not see it in the docs. – Pietro

can someone add the link where this is explicity mentioned, i didnt seem to find it anywhere - – Perchloride

I think this Link can help you. – Cynewulf

Answer 2

As of 2024, minikube is using kindnet by default.

A vanilla minikube installation (minikube start) does not support any NetworkPolicies, since the default CNI, Kindnet, does not support Network Policies, by design.

https://minikube.sigs.k8s.io/docs/handbook/network_policy/

Ferret