title: Configure gsutil to use kubernetes service account credentials inside of pod
body: <p>I have a kubernetes Cronjob that performs some backup jobs, and the backup files needs to be uploaded to a bucket. The pod have the service account credentials mounted inside the pod at /var/run/secrets/kubernetes.io/serviceaccount, <strong>but how can I instruct gsutil to use the credentials in /var/run/secrets/kubernetes.io/serviceaccount?</strong></p>
  
  <pre><code>lrwxrwxrwx 1 root root   12 Oct  8 20:56 token -&gt; ..data/token
  lrwxrwxrwx 1 root root   16 Oct  8 20:56 namespace -&gt; ..data/namespace
  lrwxrwxrwx 1 root root   13 Oct  8 20:56 ca.crt -&gt; ..data/ca.crt
  lrwxrwxrwx 1 root root   31 Oct  8 20:56 ..data -&gt; ..2018_10_08_20_56_04.686748281
  drwxr-xr-x 2 root root  100 Oct  8 20:56 ..2018_10_08_20_56_04.686748281
  drwxrwxrwt 3 root root  140 Oct  8 20:56 .
  drwxr-xr-x 3 root root 4096 Oct  8 20:57 ..
  </code></pre>