Kubeconfig

A kubeconfig consists of three lists: clusters (API address and CA), users (credentials) and the contexts joining them (cluster + user + default namespace). current-context names the active one:

apiVersion: v1
kind: Config
clusters:
  - name: uretim-eu
    cluster:
      server: https://eu.k8s.sirket.com
      certificate-authority-data: LS0tLS1CRUdJTi…
users:
  - name: ali-eu
    user:
      exec:
        apiVersion: client.authentication.k8s.io/v1beta1
        command: aws
        args: [eks, get-token, --cluster-name, uretim-eu]
contexts:
  - name: uretim-eu
    context:
      cluster: uretim-eu
      user: ali-eu
      namespace: magaza
current-context: uretim-eu

The KUBECONFIG environment variable takes several files separated by colons; kubectl merges them all. config view --flatten writes the merge into a single file. Contexts can be renamed and deleted:

export KUBECONFIG=~/.kube/config:~/.kube/uretim-eu.yaml:~/.kube/uretim-tr.yaml
kubectl config view --flatten > ~/.kube/birlesik.yaml
kubectl config rename-context arn:aws:eks:eu-central-1:123:cluster/uretim-eu uretim-eu
kubectl config delete-context eski-test