title: Unable to install grafana plugins using grafana-cli
body: <p>Installed Grafana by bitnami helm chart.</p>
  <p>exec into the pod to install the plugins but having lot of issues as below:</p>
  <pre><code>I have no name!@dhrubjee-grafana-bcc7c4cc4-kttd6:/opt/bitnami/grafana$ grafana-cli plugins install
  Error: ✗ please specify plugin to install
  I have no name!@dhrubjee-grafana-bcc7c4cc4-kttd6:/opt/bitnami/grafana$ grafana-cli plugins install list
  Error: ✗ pluginsDir (/var/lib/grafana/plugins) is not a writable directory
  I have no name!@dhrubjee-grafana-bcc7c4cc4-kttd6:/opt/bitnami/grafana$ ls -dl .
  drwxrwxr-x 1 root root 4096 Apr 12 18:20 .
  I have no name!@dhrubjee-grafana-bcc7c4cc4-kttd6:/opt/bitnami/grafana$ sudo su -
  bash: sudo: command not found
  I have no name!@dhrubjee-grafana-bcc7c4cc4-kttd6:/opt/bitnami/grafana$ chmod 777 .
  chmod: changing permissions of '.': Operation not permitted
  I have no name!@dhrubjee-grafana-bcc7c4cc4-kttd6:/opt/bitnami/grafana$ sudo chmod 777 .
  bash: sudo: command not found
  I have no name!@dhrubjee-grafana-bcc7c4cc4-kttd6:/opt/bitnami/grafana$'
  </code></pre>
  <p>How to reproduce the error?</p>
  <pre><code>helm install &lt;release name&gt; bitnami/grafana -nmonitoring 
  helm install dhrubjee-grafana bitnami/grafana -nmonitoring 
  k exec --stdin --tty pod/dhrubjee-grafana-bcc7c4cc4-kttd6 -nmonitoring -- /bin/bash
  </code></pre>
  <p>My main goal is to add dynatrace as a data source for Grafana.</p>