docker data-root

The storage path for such persisted data as images, volumes, and cluster state is docker data root (data-root in /etc/docker/daemon.json).

MKE clusters require that all nodes have the same docker data-root for the Kubernetes network to function correctly. In addition, if the data-root is changed on all nodes you must recreate the Kubernetes network configuration in MKE by running the following commands:

kubectl -n kube-system delete configmap/calico-config
kubectl -n kube-system delete ds/calico-node deploy/calico-kube-controllers

See also