I've setup a k8s cluster on a bare metal ubuntu machine using RKE. There is no problem creating deployments with images from docker.io.
But I can't create deployments which are based on gcr.io:
Warning Failed 10s kubelet Failed to pull image "k8s.gcr.io/ingress-nginx/kube-webhook-certgen:v1.0@sha256:f3b6b39a6062328c095337b4cadcefd1612348fdd5190b1dcbcb9b9e90bd8068": rpc er │
ror: code = Unknown desc = Error response from daemon: Get "https://k8s.gcr.io/v2/": dial tcp: lookup k8s.gcr.io: Temporary failure in name resolution │
Warning Failed 10s kubelet Error: ErrImagePull
Why is k8s.gcr.io blocked and where can I enable it?