如果在hbase的shell中输入了status报错，
1hbase(main):001:0> status 2 3ERROR: org.apache.hadoop.hbase.ipc.ServerNotRunningYetException: Server is not running yet 4 at org.apache.hadoop.hbase.master.HMaster.checkServiceStarted(HMaster.java:2445) 5 at org.apache.hadoop.hbase.master.MasterRpcServices.isMasterRunning(MasterRpcServices.java:946) 6 at org.apache.hadoop.hbase.protobuf.generated.MasterProtos$MasterService$2.callBlockingMethod(MasterProtos.java:58521) 7 at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2339) 8 at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:123) 9 at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:188) 10 at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:168) 11 12Here is some help for this command: 13Show cluster status. Can be 'summary', 'simple', 'detailed', or 'replication'. The 14default is 'summary'. Examples: 15 16 hbase>
然后网页出现了
解决：
关闭hdfs的安全模式，你也可以通过查看hadoop的50070端口的网站查看是否开启了安全模式
如何关闭安全模式？
hdfs dfsadmin -safemode leave
然后稍等几秒，再刷新网页就好了。