error: exec plugin: invalid apiVersion "client.authentication.k8s.io/v1alpha1"

 

EKS Cluster 의 Kubernetes version 1.27 및 kubectl 1.27 으로 업데이트 후 kubectl 명령을 하면 아래와 같이 에러가 발생했다.

[root@server app]# kubectl get all -A
error: exec plugin: invalid apiVersion "client.authentication.k8s.io/v1alpha1"

 

원인은 1.24 부터는 api 가 변경 된 것으로 보인다.

 

해결 방법은 아래와 같이 ~/.kube/config 내용에 apiVersion 경로를 변경 해줬다. v1alpha1 -> v1beta1

[root@server aws]# cat ~/.kube/config
apiVersion: v1
clusters:
...
...
- name: arn:aws:eks:ap-northeast-2:...:cluster/elk
  user:
    exec:
      apiVersion: client.authentication.k8s.io/v1beta1
      args:
      - --region
      - ap-northeast-2
      - eks
      - get-token
      - --cluster-name
      - elk
      command: aws

 

만약 아래와 같이 에러가 발생한다면 추가 작업도 필요하다. (aws-cli update)

Unable to connect to the server: getting credentials: decoding stdout: no kind "ExecCredential" is registered for version "client.authentication.k8s.io/v1alpha1" in scheme "pkg/client/auth/exec/exec.go:62"

 

aws-cli update 방법

[root@server k8s]# curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"

[root@server k8s]# unzip awscliv2.zip

[root@server k8s]# cd aws

[root@server aws]# ./install --update

[root@server aws]# aws --version
aws-cli/2.13.18 Python/3.11.5 Linux/3.10.0-1127.el7.x86_64 exe/x86_64.centos.7 prompt/off

 

[root@server aws]# kubectl get all -A
NAMESPACE        NAME                                                READY   STATUS    RESTARTS   AGE
cert-manager     pod/cert-manager-5b65cb968c-q8mcz                   1/1     Running   0          18m
cert-manager     pod/cert-manager-cainjector-56b88bcdf7-z8gbx        1/1     Running   0          24m
cert-manager     pod/cert-manager-webhook-c784c79c7-4pz4q            1/1     Running   0          15m
elastic-system   pod/elastic-operator-0                              1/1     Running   0          24m
kube-system      pod/aws-load-balancer-controller-76c5658bf9-fx6b5   1/1     Running   0          24m
kube-system      pod/aws-node-4mktn                                  1/1     Running   0          14m
kube-system      pod/aws-node-rkbjn                                  1/1     Running   0          25m
kube-system      pod/aws-node-w2jpd                                  1/1     Running   0          26m
kube-system      pod/coredns-d596d9655-275m8                         1/1     Running   0          15m
kube-system      pod/coredns-d596d9655-8s5f9                         1/1     Running   0          18m
kube-system      pod/ebs-csi-controller-77995bbbbd-95sqb             6/6     Running   0          18m
kube-system      pod/ebs-csi-controller-77995bbbbd-cj92f             6/6     Running   0          15m
kube-system      pod/ebs-csi-node-b7npk                              3/3     Running   0          14m
kube-system      pod/ebs-csi-node-dj585                              3/3     Running   0          26m
kube-system      pod/ebs-csi-node-hmtdc                              3/3     Running   0          25m
kube-system      pod/kube-proxy-bxx4l                                1/1     Running   0          26m
kube-system      pod/kube-proxy-gmfcw                                1/1     Running   0          25m
kube-system      pod/kube-proxy-n262s                                1/1     Running   0          14m

NAMESPACE        NAME                                        TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)         AGE
cert-manager     service/cert-manager                        ClusterIP   172.20.63.51    <none>        9402/TCP        178d
cert-manager     service/cert-manager-webhook                ClusterIP   172.20.78.240   <none>        443/TCP         178d
default          service/kubernetes                          ClusterIP   172.20.0.1      <none>        443/TCP         178d
elastic-system   service/elastic-webhook-server              ClusterIP   172.20.29.145   <none>        443/TCP         178d
kube-system      service/aws-load-balancer-webhook-service   ClusterIP   172.20.209.21   <none>        443/TCP         178d
kube-system      service/kube-dns                            ClusterIP   172.20.0.10     <none>        53/UDP,53/TCP   178d

NAMESPACE     NAME                                  DESIRED   CURRENT   READY   UP-TO-DATE   AVAILABLE   NODE SELECTOR              AGE
kube-system   daemonset.apps/aws-node               3         3         3       3            3           <none>                     178d
kube-system   daemonset.apps/ebs-csi-node           3         3         3       3            3           kubernetes.io/os=linux     176d
kube-system   daemonset.apps/ebs-csi-node-windows   0         0         0       0            0           kubernetes.io/os=windows   176d
kube-system   daemonset.apps/kube-proxy             3         3         3       3            3           <none>                     178d

NAMESPACE      NAME                                           READY   UP-TO-DATE   AVAILABLE   AGE
cert-manager   deployment.apps/cert-manager                   1/1     1            1           178d
cert-manager   deployment.apps/cert-manager-cainjector        1/1     1            1           178d
cert-manager   deployment.apps/cert-manager-webhook           1/1     1            1           178d
kube-system    deployment.apps/aws-load-balancer-controller   1/1     1            1           178d
kube-system    deployment.apps/coredns                        2/2     2            2           178d
kube-system    deployment.apps/ebs-csi-controller             2/2     2            2           176d

NAMESPACE      NAME                                                      DESIRED   CURRENT   READY   AGE
cert-manager   replicaset.apps/cert-manager-5b65cb968c                   1         1         1       178d
cert-manager   replicaset.apps/cert-manager-cainjector-56b88bcdf7        1         1         1       178d
cert-manager   replicaset.apps/cert-manager-webhook-c784c79c7            1         1         1       178d
kube-system    replicaset.apps/aws-load-balancer-controller-76c5658bf9   1         1         1       178d
kube-system    replicaset.apps/coredns-d596d9655                         2         2         2       178d
kube-system    replicaset.apps/ebs-csi-controller-6f49d6c768             0         0         0       176d
kube-system    replicaset.apps/ebs-csi-controller-77995bbbbd             2         2         2       176d