kubeadm init 시 오류

root@master:/home/server1# kubeadm init

W1221 01:11:07.031709    8457 version.go:101] could not fetch a Kubernetes version from the internet: unable to get URL "https://dl.k8s.io/release/stable-1.txt": Get "https://dl.k8s.io/release/stable-1.txt": dial tcp: lookup dl.k8s.io on 127.0.0.53:53: server misbehaving

W1221 01:11:07.031790    8457 version.go:102] falling back to the local client version: v1.20.1

[init] Using Kubernetes version: v1.20.1

[preflight] Running pre-flight checks

[WARNING IsDockerSystemdCheck]: detected "cgroupfs" as the Docker cgroup driver. The recommended driver is "systemd". Please follow the guide at https://kubernetes.io/docs/setup/cri/

[preflight] Pulling images required for setting up a Kubernetes cluster

[preflight] This might take a minute or two, depending on the speed of your internet connection

[preflight] You can also perform this action in beforehand using 'kubeadm config images pull'

error execution phase preflight: [preflight] Some fatal errors occurred:

[ERROR ImagePull]: failed to pull image k8s.gcr.io/kube-apiserver:v1.20.1: output: Error response from daemon: Get https://k8s.gcr.io/v2/: dial tcp: lookup k8s.gcr.io: no such host

, error: exit status 1

[ERROR ImagePull]: failed to pull image k8s.gcr.io/kube-controller-manager:v1.20.1: output: Error response from daemon: Get https://k8s.gcr.io/v2/: dial tcp: lookup k8s.gcr.io: no such host

, error: exit status 1

[ERROR ImagePull]: failed to pull image k8s.gcr.io/kube-scheduler:v1.20.1: output: Error response from daemon: Get https://k8s.gcr.io/v2/: dial tcp: lookup k8s.gcr.io: no such host

, error: exit status 1

[ERROR ImagePull]: failed to pull image k8s.gcr.io/kube-proxy:v1.20.1: output: Error response from daemon: Get https://k8s.gcr.io/v2/: dial tcp: lookup k8s.gcr.io: no such host

, error: exit status 1

[ERROR ImagePull]: failed to pull image k8s.gcr.io/pause:3.2: output: Error response from daemon: Get https://k8s.gcr.io/v2/: dial tcp: lookup k8s.gcr.io: no such host

, error: exit status 1

[ERROR ImagePull]: failed to pull image k8s.gcr.io/etcd:3.4.13-0: output: Error response from daemon: Get https://k8s.gcr.io/v2/: dial tcp: lookup k8s.gcr.io: no such host

, error: exit status 1

[ERROR ImagePull]: failed to pull image k8s.gcr.io/coredns:1.7.0: output: Error response from daemon: Get https://k8s.gcr.io/v2/: dial tcp: lookup k8s.gcr.io: no such host

, error: exit status 1

[preflight] If you know what you are doing, you can make a check non-fatal with `--ignore-preflight-errors=...`

To see the stack trace of this error execute with --v=5 or higher

root@master:/home/server1# kubeadm config images pull

W1221 01:11:19.926282    8988 version.go:101] could not fetch a Kubernetes version from the internet: unable to get URL "https://dl.k8s.io/release/stable-1.txt": Get "https://dl.k8s.io/release/stable-1.txt": dial tcp: lookup dl.k8s.io on 127.0.0.53:53: server misbehaving

W1221 01:11:19.926337    8988 version.go:102] falling back to the local client version: v1.20.1

failed to pull image "k8s.gcr.io/kube-apiserver:v1.20.1": output: Error response from daemon: Get https://k8s.gcr.io/v2/: dial tcp: lookup k8s.gcr.io: no such host

, error: exit status 1

To see the stack trace of this error execute with --v=5 or higher

그대로 따라하고 kubeadm init 명령어 치니까 저렇게 나옵니다...

해결방법 있을까요?