问题：java.net.UnknownHostException: Invalid host name: local host is: (unknown); destination host is: "master":9000; java.net.UnknownHostException;
log错误日志
2017-07-13 21:26:45,915 FATAL [master:16000.activeMasterManager] master.HMaster: Failed to become active master
java.net.UnknownHostException: Invalid host name: local host is: (unknown); destination host is: "master":9000; java.net.UnknownHostException; For more details see: http://wiki.apache.org/hadoop/UnknownHost
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.net.NetUtils.wrapWithMessage(NetUtils.java:792)
at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:744)
at org.apache.hadoop.ipc.Client$Connection.(Client.java:409)
at org.apache.hadoop.ipc.Client.getConnection(Client.java:1518)
at org.apache.hadoop.ipc.Client.call(Client.java:1451)
at org.apache.hadoop.ipc.Client.call(Client.java:1412)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229)
at com.sun.proxy.$Proxy18.setSafeMode(Unknown Source)
at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.setSafeMode(ClientNamenodeProtocolTranslatorPB.java:666)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:191)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
at com.sun.proxy.$Proxy19.setSafeMode(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.hadoop.hbase.fs.HFileSystem$1.invoke(HFileSystem.java:279)
at com.sun.proxy.$Proxy20.setSafeMode(Unknown Source)
at org.apache.hadoop.hdfs.DFSClient.setSafeMode(DFSClient.java:2596)
at org.apache.hadoop.hdfs.DistributedFileSystem.setSafeMode(DistributedFileSystem.java:1223)
at org.apache.hadoop.hdfs.DistributedFileSystem.setSafeMode(DistributedFileSystem.java:1207)
at org.apache.hadoop.hbase.util.FSUtils.isInSafeMode(FSUtils.java:525)
at org.apache.hadoop.hbase.util.FSUtils.waitOnSafeMode(FSUtils.java:971)
at org.apache.hadoop.hbase.master.MasterFileSystem.checkRootDir(MasterFileSystem.java:429)
at org.apache.hadoop.hbase.master.MasterFileSystem.createInitialFileSystemLayout(MasterFileSystem.java:153)
at org.apache.hadoop.hbase.master.MasterFileSystem.(MasterFileSystem.java:128)
at org.apache.hadoop.hbase.master.HMaster.finishActiveMasterInitialization(HMaster.java:693)
at org.apache.hadoop.hbase.master.HMaster.access$600(HMaster.java:189)
at org.apache.hadoop.hbase.master.HMaster$2.run(HMaster.java:1803)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.net.UnknownHostException
... 32 more
2017-07-13 21:26:45,924 FATAL [master:16000.activeMasterManager] master.HMaster: Unhandled exception. Starting shutdown.
java.net.UnknownHostException: Invalid host name: local host is: (unknown); destination host is: "master":9000; java.net.UnknownHostException; For more details see: http://wiki.apache.org/hadoop/UnknownHost
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:792)
at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:744)
at org.apache.hadoop.ipc.Client$Connection.(Client.java:409)
at org.apache.hadoop.ipc.Client.getConnection(Client.java:1518)
at org.apache.hadoop.ipc.Client.call(Client.java:1451)
at org.apache.hadoop.ipc.Client.call(Client.java:1412)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229)
at com.sun.proxy.$Proxy18.setSafeMode(Unknown Source)
at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.setSafeMode(ClientNamenodeProtocolTranslatorPB.java:666)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:191)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
at com.sun.proxy.$Proxy19.setSafeMode(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.hadoop.hbase.fs.HFileSystem$1.invoke(HFileSystem.java:279)
at com.sun.proxy.$Proxy20.setSafeMode(Unknown Source)
at org.apache.hadoop.hdfs.DFSClient.setSafeMode(DFSClient.java:2596)
at org.apache.hadoop.hdfs.DistributedFileSystem.setSafeMode(DistributedFileSystem.java:1223)
at org.apache.hadoop.hdfs.DistributedFileSystem.setSafeMode(DistributedFileSystem.java:1207)
at org.apache.hadoop.hbase.util.FSUtils.isInSafeMode(FSUtils.java:525)
at org.apache.hadoop.hbase.util.FSUtils.waitOnSafeMode(FSUtils.java:971)
at org.apache.hadoop.hbase.master.MasterFileSystem.checkRootDir(MasterFileSystem.java:429)
at org.apache.hadoop.hbase.master.MasterFileSystem.createInitialFileSystemLayout(MasterFileSystem.java:153)
at org.apache.hadoop.hbase.master.MasterFileSystem.(MasterFileSystem.java:128)
at org.apache.hadoop.hbase.master.HMaster.finishActiveMasterInitialization(HMaster.java:693)
at org.apache.hadoop.hbase.master.HMaster.access$600(HMaster.java:189)
at org.apache.hadoop.hbase.master.HMaster$2.run(HMaster.java:1803)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.net.UnknownHostException
... 32 more
2017-07-13 21:26:45,925 INFO [master:16000.activeMasterManager] regionserver.HRegionServer: STOPPED: Unhandled exception. Starting shutdown.
问题补充
1、防火墙均已关闭、root最高权限
2、hadoop启动正常jps查看已启动，通过浏览器访问50070，8088无任何问题
3、Zookeeper启动正常jps查看已启动
4、已删除hbase/lib下所有关于hadoop的jar并将 hadoop/share所有关于Hadoop的jar拷贝到hbase/lib下，并添加aws-java-sdk-core-1.11.158.jar和aws-java-sdk-s3-1.11.155.jar
版本说明
1、hadoop 2.7.2
2、hbase 1.2.6
3、zookeeper 3.4.2
/etc/hosts 配置文件
192.168.1.151 master
192.168.1.152 slave1
192.168.1.153 slave2
且主机名已对应
你的host中配置了master了么
谢谢，我解决啦，配置文件指定主机就好