Kubeconfig

Kubeconfig is a file that you can use to switch multiple clusters by switching context. We can use kubectl config view to view the setting. The following is an example of a minikube cluster in a kubeconfig file.

# kubectl config view
apiVersion: v1
clusters:  
- cluster:
    certificate-authority: /Users/k8s/.minikube/ca.crt
    server: https://192.168.99.100:8443
  name: minikube
contexts:
- context:
    cluster: minikube
    user: minikube
  name: minikube
current-context: minikube
kind: Config
preferences: {}
users:
- name: minikube
  user:
    client-certificate: /Users/k8s/.minikube/apiserver.crt
    client-key: /Users/k8s/.minikube/apiserver.key

Just like what we learned previously. We could use kubectl config use-context to switch the cluster to manipulate. We could also use kubectl config --kubeconfig=<config file name> to specify which kubeconfig file we'd like to use. Only the specified file will be used. We could also specify kubeconfig files by the environment...