今天遇到kubernetes安装heapster，发现只显示一个node的监控数据，另外一个node没拿到。
后来经过google才发现，是两台node的时间未同步，好坑啊
Would you check the date of all the nodes? If the node's date is not synchronous with the node where the heapster resided, the heapster cannot collect the metrics normally.
