Notes: Kind Cluster Without CNI

Mon, 01 Jan 0001 00:00:00 +0000

Kind Cluster Without CNI

Kind installs a CNI by default. To create a kind cluster without CNI installed, simply set networking.disableDefaultCNI to true in the cluster config manifest.

kind: Cluster
apiVersion: kind.x-k8s.io/v1alpha4
networking:
 # the default CNI will not be installed
 disableDefaultCNI: true

So run the following command.

kind create cluster --config <<EOF
kind: Cluster
apiVersion: kind.x-k8s.io/v1alpha4
networking:
 # the default CNI will not be installed
 disableDefaultCNI: true
EOF

And Check that Pods that are not part of the control plane is in Pending status.

$ kubectl get pods -A
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-system coredns-5d78c9869d-2gljt 0/1 Pending 0 16s
kube-system coredns-5d78c9869d-vnftf 0/1 Pending 0 16s
kube-system etcd-kind-control-plane 1/1 Running 0 31s
kube-system kube-apiserver-kind-control-plane 1/1 Running 0 31s
kube-system kube-controller-manager-kind-control-plane 1/1 Running 0 31s
kube-system kube-proxy-qm5pn 1/1 Running 0 16s
kube-system kube-scheduler-kind-control-plane 1/1 Running 0 31s
local-path-storage local-path-provisioner-6bc4bddd6b-s68jl 0/1 Pending 0 16s

You can also see that the nodes are not ready.

$ kubectl get nodes
NAME STATUS ROLES AGE VERSION
kind-without-cni-control-plane NotReady control-plane 28s v1.27.3

References

https://kind.sigs.k8s.io/docs/user/configuration/#disable-default-cni

Hanapedia Wiki – How to

Notes: Kind Cluster Without CNI

Kind Cluster Without CNI