Heapster on Kubernetes 1.11.x & 1.13.x 沒法收集、查詢性能數據問題

Heapster 在安裝過程當中， 會報錯以下：

# kubectl get pods --namespace=kube-system|grep heapster
# kubectl logs --namespace=kube-system heapster-76694897cf-9tnjc

W1227 01:38:25.001190       1 manager.go:152] Failed to get all responses in time (got 0/2)
E1227 01:39:05.009389       1 manager.go:101] Error in scraping containers from kubelet:10.247.15.92:10255: failed to get all container stats from Kubelet URL "http://10.247.15.92:10255/stats/container/": Post http://10.247.15.92:10255/stats/container/: dial tcp 10.247.15.92:10255: getsockopt: connection refused
E1227 01:39:05.010706       1 manager.go:101] Error in scraping containers from kubelet:10.247.15.75:10255: failed to get all container stats from Kubelet URL "http://10.247.15.75:10255/stats/container/": Post http://10.247.15.75:10255/stats/container/: dial tcp 10.247.15.75:10255: getsockopt: connection refused

直接致使dashboard內，沒法收集、查詢各node/pod 的性能數據。

多方查找後，獲得這裏的解決辦法：https://brookbach.com/2018/10/29/Heapster-on-Kubernetes-1.11.3.html