hadoop报错ConnectionRefused

执行hadoop fs -ls时 报错：ls: Call From SERVER226/10.0.0.226 to SERVER226:9000 failed on connection exception: java.net.ConnectException: Connection refused; For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused

感谢：
https://segmentfault.com/q/1010000005689441

将fs.defaultFS端口和rpc-address端口改成一致就可以了

改成一致后，再次执行：

ls: Operation category READ is not supported in state standby

解决方法：
重新hdfs zkfc –formatZK

参考：
http://blog.csdn.net/ZHAOLEI5911/article/details/51493637