While using this command for RBAC "kubectl config set-cluster test --server=https://127.0.0.1:52807" the IP here is from the kind-cluster that I am running after which I use "kubectl config set-context test --cluster=test" followed by required credentials & switch to the context by "kubectl config use-context test" and I am in the test context but with the first command I am configuring the config file I got that but m I making a cluster within a cluster what you guys understand please help me clear my doubt what is it actually doing?

CodePudding user response：

kubectl config set-cluster sets a cluster entry in your kubeconfig file (usually found in $HOME/.kube/config). The kubeconfig file defines how your kubectl is configured.

The cluster entry defines where kubectl can find the kubernetes cluster to talk to. You can have multiple clusters defined in your kubeconfig file.

kubectl config set-context sets a context element, which is used to combine a cluster, namespace and user into a single element so that kubectl has everything it needs to communicate with the cluster. You can have multiple contexts, for example one per kubernetes cluster that you're managing.

kubectl config use-context sets your current context to be used in kubectl.

So to walk through your commands:

• kubectl config set-cluster test --server=https://127.0.0.1:52807 creates a new entry in kubeconfig under the clusters section with a cluster called test pointing towards https://127.0.0.1:52807
• kubectl config set-context test --cluster=test creates a new context in kubeconfig called test and tells that context to point to a cluster called test
• kubectl config use-context test changes the the current context in kubeconfig to a context called test (which you just created).

More docs on kubectl config and kubeconfig:

• https://kubernetes.io/docs/tasks/access-application-cluster/configure-access-multiple-clusters/
• https://kubernetes.io/docs/reference/kubectl/cheatsheet/#kubectl-context-and-configuration