Kubernetes Dashboard access using config file Not enough data to create auth info structure.

Question

I am trying to access the kubernetes Dashboard using the config file. From the authentication when I select config file its giving ‘Not enough data to create auth info

Answer 1

After looking at this answer How to sign in kubernetes dashboard? and source code figured the kubeconfig authentication.

After kubeadm install on the master server get the default service account token and add it to config file. Then use the config file to authenticate.

You can use this to add the token.

#!/bin/bash
TOKEN=$(kubectl -n kube-system describe secret default| awk '$1=="token:"{print $2}')

kubectl config set-credentials kubernetes-admin --token="${TOKEN}"

your config file should be looking like this.

kubectl config view |cut -c1-50|tail -10
  name: kubernetes-admin@kubernetes
current-context: kubernetes-admin@kubernetes
kind: Config
preferences: {}
users:
- name: kubernetes-admin
  user:
    client-certificate-data: REDACTED
    client-key-data: REDACTED
    token: eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.ey