单机hbase配置，出现以下问题，提示说明无法分配请求的地址，百度该问题，解法各种各样，不如自己认真研究错误日志信息，后来发现是系统的ip映射配置出现了失误，将主机的ip写错了！警戒自己，一定要认真！容不得慢点马虎！ 主机ip映射配置文件路径 /etc/hosts

java.lang.RuntimeException: Failed construction of RegionServer: class org.apache.hadoop.hbase.master.HMasterCommandLine$LocalHMasterCannot assign requested address
at org.apache.hadoop.hbase.util.JVMClusterUtil.createMasterThread(JVMClusterUtil.java:155)
at org.apache.hadoop.hbase.LocalHBaseCluster.addMaster(LocalHBaseCluster.java:197)
at org.apache.hadoop.hbase.LocalHBaseCluster.<init>(LocalHBaseCluster.java:147)
at org.apache.hadoop.hbase.master.HMasterCommandLine.startMaster(HMasterCommandLine.java:137)
at org.apache.hadoop.hbase.master.HMasterCommandLine.run(HMasterCommandLine.java:102)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
at org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:76)
at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:1078)
Caused by: java.net.BindException: Problem binding to /192.168.192.30:0 : Cannot assign requested address
at org.apache.hadoop.hbase.ipc.HBaseServer.bind(HBaseServer.java:203)
at org.apache.hadoop.hbase.ipc.HBaseServer$Listener.<init>(HBaseServer.java:270)
at org.apache.hadoop.hbase.ipc.HBaseServer.<init>(HBaseServer.java:1168)
at org.apache.hadoop.hbase.ipc.HBaseRPC$Server.<init>(HBaseRPC.java:544)
at org.apache.hadoop.hbase.ipc.HBaseRPC.getServer(HBaseRPC.java:514)
at org.apache.hadoop.hbase.master.HMaster.<init>(HMaster.java:195)
at org.apache.hadoop.hbase.master.HMasterCommandLine$LocalHMaster.<init>(HMasterCommandLine.java:188)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.apache.hadoop.hbase.util.JVMClusterUtil.createMasterThread(JVMClusterUtil.java:152)
... 7 more
Caused by: java.net.BindException: Cannot assign requested address
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:444)
at sun.nio.ch.Net.bind(Net.java:436)
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:214)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
at org.apache.hadoop.hbase.ipc.HBaseServer.bind(HBaseServer.java:201)
... 18 more