Rancher 2.7, creating RKE2/K3S cluster, shows on machines tab following red message: Error applying plan -- check rancher-system-agent.service logs on node for more information Please help

What do the logs show?

level=error msg="error while staging: Get \"https://index.docker.io/v2/\": dial tcp: lookup index.docker.io on x.x.x.x:53 no such host: failed to get image index.docker.io/ranc...