All Kubernetes versions listed are e2e tested and guaranteed to be compatible with this Cilium version. Older Kubernetes versions not listed here do not have Cilium support. Newer Kubernetes versions, while not listed, will depend on the backward compatibility offered by Kubernetes.
Additionally, Cilium runs e2e tests against various cloud providers’ managed Kubernetes offerings using multiple Kubernetes versions. See the following links for the current test matrix for each cloud provider:
See System Requirements for all of the Cilium system requirements.
Enable CNI in Kubernetes
CNI - Container Network Interface is the plugin layer used by Kubernetes to
delegate networking configuration and is enabled by default in Kubernetes 1.24 and
later. Previously, CNI plugins were managed by the kubelet using the
command-line parameter. For more information, see the
Kubernetes CNI network-plugins documentation.
Enable automatic node CIDR allocation (Recommended)
Kubernetes has the capability to automatically allocate and assign a per node IP
allocation CIDR. Cilium automatically uses this feature if enabled. This is the
easiest method to handle IP allocation in a Kubernetes cluster. To enable this
feature, simply add the following flag when starting
This option is not required but highly recommended.