KUBERNETES: KUBECTL COMMAND TO CHECK THE CLUSTER CONFIGURATION AND KUBERNETES VERSION (DevOps)

Belw command can be used:

kubectl get cm -n kube-system kubeadm-config -o=jsonpath="{.data.ClusterConfiguration}"

Below is sample output:

$ kubectl get cm -n kube-system kubeadm-config -o=jsonpath="{.data.ClusterConfiguration}"

apiServer:

  extraArgs:

    authorization-mode: Node,RBAC

    tls-min-version: VersionTLS12

  timeoutForControlPlane: 4m0s

apiVersion: kubeadm.k8s.io/v1beta3

certificatesDir: /etc/kubernetes/pki

clusterName: kubernetes

controllerManager:

  extraArgs:

    tls-min-version: VersionTLS12

dns:

  imageRepository: container-registry.oracle.com/olcne

  imageTag: 1.8.6

etcd:

  local:

    dataDir: /var/lib/etcd

    imageRepository: container-registry.oracle.com/olcne

    imageTag: 3.5.3

imageRepository: container-registry.oracle.com/olcne

kind: ClusterConfiguration

kubernetesVersion: v1.24.5

networking:

  dnsDomain: cluster.local

  podSubnet: 10.244.0.0/16

  serviceSubnet: 10.96.0.0/12

scheduler:

  extraArgs:

    tls-min-version: VersionTLS12