<p>I've installed metrics-server on kubernetes v1.11.2.</p>

<p>I'm running a bare-metal cluster using 3 nodes and 1 master</p>

<p>In the metrics-server log I have the following errors:</p>

<pre><code>E0907 14:29:51.774592       1 manager.go:102] unable to fully collect metrics: [unable to fully scrape metrics from source kubelet_summary:vps01: unable to 
fetch metrics from Kubelet vps01 (vps01): Get https://vps01:10250/stats/summary/: dial tcp: lookup vps01 on 10.96.0.10:53: no such host, unable to fully scr
ape metrics from source kubelet_summary:vps04: unable to fetch metrics from Kubelet vps04 (vps04): Get https://vps04:10250/stats/summary/: dial tcp: lookup 
vps04 on 10.96.0.10:53: no such host, unable to fully scrape metrics from source kubelet_summary:vps03: unable to fetch metrics from Kubelet vps03 (vps03): 
Get https://vps03:10250/stats/summary/: dial tcp: lookup vps03 on 10.96.0.10:53: no such host, unable to fully scrape metrics from source kubelet_summary:vp
s02: unable to fetch metrics from Kubelet vps02 (vps02): Get https://vps02:10250/stats/summary/: dial tcp: lookup vps02 on 10.96.0.10:53: no such host]     
E0907 14:30:01.694794       1 reststorage.go:98] unable to fetch pod metrics for pod boxweb/boxweb-deployment-7756c49688-fz625: no metrics known for pod "bo
xweb/boxweb-deployment-7756c49688-fz625"                                                                                                                    
E0907 14:30:10.517886       1 reststorage.go:112] unable to fetch node metrics for node "vps01": no metrics known for node "vps01"
</code></pre>

<p>I also can't get any metrics using 
  kubectl top node vps01</p>

<p>Same for autoscale it is not working</p>

<pre><code>  unable to get metrics for resource cpu: unable to fetch metrics from
 resource metrics API: the server could not find the requested resource (get pods.metrics.k8s.io)       
</code></pre>

<p>I found the following solution:</p>

<p>Change the <code>metrics-server-deployment.yaml</code> file and add:</p>

<pre><code>command:
    - /metrics-server 
    - --kubelet-preferred-address-types=InternalIP
    - --kubelet-insecure-tls
</code></pre>
