title: How to get the resource usage of a pod in Kubernetes?
body: <p>How can we get the real resource usage (not resource requests) of each pod on Kubernetes by command line?
  Heapster is deprecated.
  Meanwhile, Metrics-server still does not support <code>kubectl top pod</code>.</p>
  
  <ol>
  <li><p>Heapster - </p>
  
  <p>I deployed Heapster using the following command </p>
  
  <pre><code>$ heapster/deploy/kube.sh start
  kubectl get pods --all-namespaces
  NAMESPACE     NAME                                                           READY     STATUS    RESTARTS   AGE
  kube-system   calico-node-hlcbl                                              2/2       Running   0          39m
  kube-system   calico-node-m8jl2                                              2/2       Running   0          35m
  kube-system   coredns-78fcdf6894-bl94w                                       1/1       Running   0          39m
  kube-system   coredns-78fcdf6894-fwx95                                       1/1       Running   0          39m
  kube-system   etcd-ctl.kube.yarnrm-pg0.utah.cloudlab.us                      1/1       Running   0          39m
  kube-system   heapster-84c9bc48c4-qzt8x                                      1/1       Running   0          15s
  kube-system   kube-apiserver-ctl.kube.yarnrm-pg0.utah.cloudlab.us            1/1       Running   0          39m
  kube-system   kube-controller-manager-ctl.kube.yarnrm-pg0.utah.cloudlab.us   1/1       Running   0          38m
  kube-system   kube-proxy-nj9f8                                               1/1       Running   0          35m
  kube-system   kube-proxy-zvr2b                                               1/1       Running   0          39m
  kube-system   kube-scheduler-ctl.kube.yarnrm-pg0.utah.cloudlab.us            1/1       Running   0          39m
  kube-system   monitoring-grafana-555545f477-jldmz                            1/1       Running   0          15s
  kube-system   monitoring-influxdb-848b9b66f6-k2k4f                           1/1       Running   0          15s
  </code></pre>
  
  <p>When I used <code>kubectl top</code>, I encountered the following errors.</p>
  
  <pre><code>$ kubectl top pods
  Error from server (ServiceUnavailable): the server is currently unable to handle the request (get services http:heapster:)
  $ kubectl top nodes
  Error from server (ServiceUnavailable): the server is currently unable to handle the request (get services http:heapster:)
  </code></pre></li>
  <li><p>metrics-server:</p>
  
  <p>metrics-server has not supported <code>kubectl top</code> <a href="https://github.com/kubernetes/community/blob/master/contributors/design-proposals/instrumentation/resource-metrics-api.md" rel="noreferrer">Resource Metrics API</a></p></li>
  </ol>
  
  <p>If anyone already solved the same problem, please help me.
  Thanks.</p>