我正在尝试启动Accumulo，并且我遇到了一个令人讨厌的异常，似乎与我的虚拟机的某些网络问题有关。我以为命令
sudo -u accumulo /usr/lib/accumulo/bin/accumulo init --instance-name lumify --password password
将初始化accumulo。然而，我得到一个警告，说已经检测到地址更改，然后是一个致命的异常。我注意到我没有在accumulo-env.sh文件中定义$ACCUMULO_HOME。我还注意到，仅有的几位"大师"one_answers";slaves"在主和从文件是单行说localhost，没有我的IP地址在那里。我在这些文件中将localhost更改为我的IP地址，同样的问题仍然存在。
我很确定这是IP地址的问题，但我严格按照说明操作。也许这是一个问题，因为我在虚拟机上(即使我使用桥接适配器并为我的虚拟机获得了真实的IP地址)?
我使用ifconfig检查我的eth0连接，它仍然显示192.168.1.232，而我仍然得到消息
Hadoop Filesystem is hdfs://192.168.1.232:8020
累加数据目录为/Accumulo
Zookeeper server is localhost:2181
然后是警告
检测到地址更改。旧版本:localhost.localdomain/192.168.1.232:8020新版本:localhost.localdomain/127.0.0.1:8020
和例外
检查文件系统是否已经初始化失败。
似乎即使没有不同的网络，我的VM是相同的IP地址，当我运行设置时，我在初始化accumulo的过程中得到这个砖。
有什么建议吗?堆栈跟踪以
继续ConnectException: Call from localhost.localdomain/127.0.0.1 to localhost。localdomain:8020 failed on connection exception: connection refused
如果有帮助，下面是堆栈跟踪:
[root@localhost conf]# sudo -u accumulo /usr/lib/accumulo/bin/accumulo init --instance-name lumify --password password
2014-08-20 17:49:35,488 [util.Initialize] INFO : Hadoop Filesystem is hdfs://192.168.1.232:8020
2014-08-20 17:49:35,490 [util.Initialize] INFO : Accumulo data dir is /accumulo
2014-08-20 17:49:35,490 [util.Initialize] INFO : Zookeeper server is localhost:2181
2014-08-20 17:49:35,490 [util.Initialize] INFO : Checking if Zookeeper is available. If this hangs, then you need to make sure zookeeper is running
Warning!!! Your instance secret is still set to the default, this is not secure. We highly recommend you change it.
You can change the instance secret in accumulo by using:
bin/accumulo org.apache.accumulo.server.util.ChangeSecret oldPassword newPassword.
You will also need to edit your secret in your configuration file by adding the property instance.secret to your conf/accumulo-site.xml. Without this accumulo will not operate correctly
2014-08-20 17:49:35,915 [ipc.Client] WARN : Address change detected. Old: localhost.localdomain/192.168.1.232:8020 New: localhost.localdomain/127.0.0.1:8020
2014-08-20 17:49:35,923 [util.Initialize] FATAL: java.io.IOException: Failed to check if filesystem already initialized
java.io.IOException: Failed to check if filesystem already initialized
at org.apache.accumulo.server.util.Initialize.checkInit(Initialize.java:178)
at org.apache.accumulo.server.util.Initialize.doInit(Initialize.java:185)
at org.apache.accumulo.server.util.Initialize.main(Initialize.java:545)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.accumulo.start.Main$1.run(Main.java:103)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.net.ConnectException: Call From localhost.localdomain/127.0.0.1 to localhost.localdomain:8020 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:782)
at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:729)
at org.apache.hadoop.ipc.Client.call(Client.java:1242)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:202)
at com.sun.proxy.$Proxy10.getFileInfo(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:164)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:83)
at com.sun.proxy.$Proxy10.getFileInfo(Unknown Source)
at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getFileInfo(ClientNamenodeProtocolTranslatorPB.java:629)
at org.apache.hadoop.hdfs.DFSClient.getFileInfo(DFSClient.java:1545)
at org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:820)
at org.apache.hadoop.fs.FileSystem.exists(FileSystem.java:1380)
at org.apache.accumulo.server.util.Initialize.isInitialized(Initialize.java:512)
at org.apache.accumulo.server.util.Initialize.checkInit(Initialize.java:163)
... 8 more
Caused by: java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:599)
at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:207)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:528)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:492)
at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:510)
at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:604)
at org.apache.hadoop.ipc.Client$Connection.access$2100(Client.java:252)
at org.apache.hadoop.ipc.Client.getConnection(Client.java:1291)
at org.apache.hadoop.ipc.Client.call(Client.java:1209)
... 23 more
Thread "init" died java.lang.reflect.InvocationTargetException
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.accumulo.start.Main$1.run(Main.java:103)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.RuntimeException: java.io.IOException: Failed to check if filesystem already initialized
at org.apache.accumulo.server.util.Initialize.main(Initialize.java:549)
... 6 more
Caused by: java.io.IOException: Failed to check if filesystem already initialized
at org.apache.accumulo.server.util.Initialize.checkInit(Initialize.java:178)
at org.apache.accumulo.server.util.Initialize.doInit(Initialize.java:185)
at org.apache.accumulo.server.util.Initialize.main(Initialize.java:545)
... 6 more
Caused by: java.net.ConnectException: Call From localhost.localdomain/127.0.0.1 to localhost.localdomain:8020 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:782)
at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:729)
at org.apache.hadoop.ipc.Client.call(Client.java:1242)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:202)
at com.sun.proxy.$Proxy10.getFileInfo(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:164)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:83)
at com.sun.proxy.$Proxy10.getFileInfo(Unknown Source)
at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getFileInfo(ClientNamenodeProtocolTranslatorPB.java:629)
at org.apache.hadoop.hdfs.DFSClient.getFileInfo(DFSClient.java:1545)
at org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:820)
at org.apache.hadoop.fs.FileSystem.exists(FileSystem.java:1380)
at org.apache.accumulo.server.util.Initialize.isInitialized(Initialize.java:512)
at org.apache.accumulo.server.util.Initialize.checkInit(Initialize.java:163)
... 8 more
Caused by: java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:599)
at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:207)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:528)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:492)
at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:510)
at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:604)
at org.apache.hadoop.ipc.Client$Connection.access$2100(Client.java:252)
at org.apache.hadoop.ipc.Client.getConnection(Client.java:1291)
at org.apache.hadoop.ipc.Client.call(Client.java:1209)
... 23 more
您应该验证您的DNS和/etc/hosts设置是否配置正确，并且与您的masters和slaves文件一致。