hadoop 异常 mapred/system/jobtracker.info could only be replicated to 0 nodes, instead of 1

搭建三台机器的hadoop。启动在slave上报错

java.net.ConnectException: Call to localhost/127.0.0.1:9000 failed on connection exception: java.net.C
onnectException: Connection refused

是用于配置文件里配错了。应该这样配

<property>
<name>fs.default.name</name>
<value>hdfs://master:9006</value>  //这个master是master的ip
</property>

我配错地址了我配的如下

<property>
<name>fs.default.name</name>
<value>hdfs://localhost:9006</value>
</property>

slave没有启动成功。master上报连不任何node 报错mapred/system/jobtracker.info could only be replicated to 0 nodes, instead of 1

修改后启动成功。