Hadoop UI只显示一个Datanode [英] Hadoop UI shows only one Datanode

问题描述

配置似乎很好：

问题是，在卡 Datanodes 中只能看到一个datanode。

解决方案

幸运的是，我解决了同样的问题它。我想这是由'loaclhost'造成的。

1. 在/ etc / host中为这些IP配置不同的名称
   
2. 请记住重新启动所有机器，事情会顺利的。

I've started hadoop cluster composed of on master and 4 slave nodes.

Configuration seems ok:

hduser@ubuntu-amd64:/usr/local/hadoop$ ./bin/hdfs dfsadmin -report

When I enter NameNode UI (http://10.20.0.140:50070/) Overview card seems ok - for example total Capacity of all Nodes sumes up.

The problem is that in the card Datanodes I see only one datanode.

解决方案

I came across the same problem fortunately i solved it. I guess it cause by 'loaclhost'.

1. Config different name for these IP in /etc/host
2. Remember to restart all the machines, things will go well.

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