title: Get "Kubernetes error: Unauthorized" when try to configure GitLab CI Runner with Kubernetes
body: <p>I try to run GitLab CI for private GitLab instance with Kubernetes at GCP following this <a href="https://gitlab.itechart-group.com/help/user/project/clusters/index#adding-an-existing-kubernetes-cluster" rel="nofollow noreferrer">instruction</a>. </p>
  
  <p>I got IP of Kubernetes master with <code>kubectl cluster-info</code></p>
  
  <p>Then I created ServiceAccount with kubectl, and also get token with command <code>kubectl describe secret/SERVICEACCOUNT-XXXXX</code></p>
  
  <p>Then I got the certificate with </p>
  
  <p><code>kubectl -o json get secret SERVICEACCOUNT-XXXXX | jq -r '.data."ca.crt"' | base64 -d - | tee ca.crt</code>  </p>
  
  <p>I inserted IP, token and ca.crt content in the Kubernetes integration fields for  "Add an existing Kubernetes cluster" command at GitLab.</p>
  
  <p>After that, I tried to install Helm at GitLab, but get an error </p>
  
  <pre><code>Something went wrong while installing Helm Tiller
  Kubernetes error: Unauthorized
  </code></pre>
  
  <p>Can you help me, please, to find out how to solve these problems? </p>