我已经安装了hadoop 2.2.0，并根据此教程在此处设置了所有内容（针对单个节点）：Hadoop YARN Installation。但是，我无法让hadoop运行。

我认为我的问题是我无法连接到本地主机，但是我不确定为什么。我花了大约10个小时以上的时间来安装，谷歌搜索和讨厌开源软件安装指南，所以现在我转到了一个从未失败过的地方。

由于一幅图片价值一千个单词，因此我给您进行设置...图片中包含许多 单词 ：

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基本配置文件/设置

我正在运行Mac OS X（Mavericks 10.9.5）

无论价值多少，这是我的/etc/hosts文件：

我的bash个人资料：

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Hadoop文件配置

对于设置core-site.xml和hdfs-site.xml：

注意：我已经在上方看到的位置创建了文件夹

我的设置yarn-site.xml：

我的hadoop-env.sh文件的设置：

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边注

在我告诉当我运行的结果start-dfs.sh，start-yarn.sh并检查，看看有什么与运行jps，记住，我有一个hadoop指向hadoop-2.2.0。

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启动Hadoop

现在，这是我启动守护进程的结果：

对于那些没有显微镜的人（在本文的预览中看起来很小），这是上面显示的代码块：

mrp:~ mrp$ start-dfs.sh
2014-11-08 13:06:05.695 java[17730:1003] Unable to load realm info from SCDynamicStore
14/11/08 13:06:05 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Starting namenodes on [localhost]
localhost: starting namenode, logging to /usr/local/hadoop-2.2.0/logs/hadoop-mrp-namenode-mrp.local.out
localhost: starting datanode, logging to /usr/local/hadoop-2.2.0/logs/hadoop-mrp-datanode-mrp.local.out
localhost: 2014-11-08 13:06:10.954 java[17867:1403] Unable to load realm info from SCDynamicStore
Starting secondary namenodes [0.0.0.0]
0.0.0.0: starting secondarynamenode, logging to /usr/local/hadoop-2.2.0/logs/hadoop-mrp-secondarynamenode-mrp.local.out
0.0.0.0: 2014-11-08 13:06:16.065 java[17953:1403] Unable to load realm info from SCDynamicStore
2014-11-08 13:06:20.982 java[17993:1003] Unable to load realm info from SCDynamicStore
14/11/08 13:06:20 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable

mrp:~ mrp$ start-yarn.sh
starting yarn daemons
starting resourcemanager, logging to /usr/local/hadoop/logs/yarn-mrp-resourcemanager-mrp.local.out
2014-11-08 13:06:43.765 java[18053:20b] Unable to load realm info from SCDynamicStore
localhost: starting nodemanager, logging to /usr/local/hadoop-2.2.0/logs/yarn-mrp-nodemanager-mrp.local.out

Check to see what's running:

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Time Out

OK. So far, I think, so good. At least this looks good based on all the other tutorials and posts. I think.

Before I try to do anything fancy, I'll just want to see if it's working properly, and run a simple command like hadoop fs -ls.

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Failure

When I run hadoop fs -ls, here's what I get:

Again, in case you can't see that pic, it says:

2014-11-08 13:23:45.772 java[18326:1003] Unable to load realm info from SCDynamicStore
14/11/08 13:23:45 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
ls: Call From mrp.local/127.0.0.1 to localhost:8020 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused

I've tried to run other commands, and I get the same basic error in the beginning of everything:

Call From mrp.local/127.0.0.1 to localhost:8020 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused

Now, I've gone to that website mentioned, but honestly, everything in that link means nothing to me. I don't get what I should do.

I would very much appreciate any assistance with this. You'll make me the happiest hadooper, ever.

...this should go without saying, but obviously I'd be happy to edit/update with more info if needed. Thanks!