安装配置hadoop遇到的问题

报错：

hadoop2.2.0升级成hdfs ha后查询报错： hadoop fs -ls /

17/11/16 16:17:52 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
-ls: java.net.UnknownHostException: testcluster
Usage: hadoop fs [generic options] -ls [-d] [-h] [-R] [<path> ...]

该错误是由于hdfs-site.xml中缺少以下配置所致
<property>
                   <name>dfs.client.failover.proxy.provider.testcluster</name>
                   <value>org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider</value>
</property>

加上后重启集群正常

 

 

参考：https://blog.youkuaiyun.com/xjping0794/article/details/78552922