在配置多个节点后，hdfs dfs ls不工作 [英] hdfs dfs ls not working after multiple nodes configured

问题描述

我开始关注在线教程，在单个本地虚拟机上配置多个ndoes。这里是主节点上的主机：

  127.0.0.1 localhost 
 192.168.96.132 hadoop 
 192.168。 96.135 hadoop1 
 192.168.96.136 hadoop2 
 
 ssh：ALL：allow 
 sshd：ALL：allow 
  

这是以前的命令： hdfs dfs -ls

  ls：从hadoop / 192.168.96.132调用hadoop：9000连接失败异常：
 java.net.ConnectException：连接被拒绝; 
欲了解更多详情，请参阅：http://wiki.apache.org/hadoop/ConnectionRefused 
  

我的配置有什么问题？我应该在哪里检查并纠正它？

非常感谢。

首先尝试
 ping hadoop，
 ping hadoop1和
 ping hadoop2。 
例如：ping hadoop 
然后尝试通过ssh 
连接语法是
 ssh username @ hadoop 
 ssh username @ hadoop1 
 ssh username @ hadoop2 
然后查看结果以确定系统是否连接。 
 

I started following an online tutorial to configure multi ndoes on my single local VM. here is the hosts on master node:

127.0.0.1   localhost
192.168.96.132  hadoop
192.168.96.135  hadoop1
192.168.96.136  hadoop2

ssh:ALL:allow
sshd:ALL:allow

Here is the command that used to work:hdfs dfs -ls

Now I am seeing error message below:

ls: Call From hadoop/192.168.96.132 to hadoop:9000 failed on connection exception: 
java.net.ConnectException: Connection refused; 
For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused

What is wrong with my configuration? where should I check and correct it?

Thank you very much.

解决方案

First try to 
ping hadoop,
ping hadoop1 and 
ping hadoop2.
Ex: ping hadoop 
Then just try to connect via ssh
The syntax is 
ssh username@hadoop
ssh username@hadoop1
ssh username@hadoop2
Then see the results to find out whether the systems are connecting or not.

这篇关于在配置多个节点后，hdfs dfs ls不工作的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！