In a cluster that contains Nodes withmultiple container runtimesinstalled, how can a Pod be configured...

Kubernetes supportsmultiple container runtimeson a node via theRuntimeClassresource.

To select a runtime, you specify the runtimeClassName field in thePod’s YAML manifest. Example:

apiVersion: v1

kind: Pod

metadata:

name: example

spec:

runtimeClassName: gvisor

containers:

- name: app

image: nginx

Incorrect options:

(A) You cannot specify container runtime through a kubectl command-line flag.

(B) Modifying the Docker daemon config does not direct Kubernetes Pods to a runtime.

(C) Environment variables inside a Pod spec do not control container runtimes.