kubectl unable to connect to server: x509: certificate signed by unknown authority : <p>i'm getting an error when running kubectl one one machine (windows)</p>

<p>the k8s cluster is running on CentOs 7 kubernetes cluster 1.7
master, worker</p>

<p>Here's my .kube\config</p>

<pre>
  <code>
apiVersion: v1
clusters:
- cluster:
    certificate-authority-data: REDACTED
    server: https://10.10.12.7:6443
  name: kubernetes
contexts:
- context:
    cluster: kubernetes
    user: system:node:localhost.localdomain
  name: system:node:localhost.localdomain@kubernetes
current-context: system:node:localhost.localdomain@kubernetes
kind: Config
preferences: {}
users:
- name: system:node:localhost.localdomain
  user:
    client-certificate-data: REDACTED
    client-key-data: REDACTED
  </code>
</pre>

<p>the cluster is built using kubeadm with the default certificates on the pki directory</p>

<p>kubectl unable to connect to server: x509: certificate signed by unknown authority</p>
