hbase集群的启动,注意几个问题

1.hbase的改的会影响器他的组件的使用,

故而, 在修改 hadoop的任何组件后, 一定要记得其它的组件也能受到影响,

一下是我在将hadoop的集群改了之后 , 再次运行hbase的时候, 就会发生异常, 原因是在连接namenode的时候,发生连接不到, 就是因为我改了之前的配置,将端口号改了,

没有去将配置文件在hbase中进行更新, 具体问如下:

##我今天起得hbase的集群时候,发生了

1.http://node3:60010/master-status

HTTP ERROR 503

Problem accessing /master-status. Reason:

    Master not ready

Powered by Jetty://

2.http://node3:60030/rs-status

The RegionServer is initializing!

在hbase-hadoop-master-node3.log中, 报异常是:

2016-10-12 09:45:04,616 DEBUG [main-EventThread] master.ActiveMasterManager: A master is now available

2016-10-12 09:59:10,484 WARN [master:node3:60000] retry.RetryInvocationHandler: Exception while invoking class org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.setSafeMode. Not retrying because failovers (15) exceeded maximum allowed (15)
java.net.ConnectException: Call From node3/192.168.8.13 to node2:8020 failed on connection exception: java.net.ConnectException: 拒绝连接; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused
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:783)
at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:730)
at org.apache.hadoop.ipc.Client.call(Client.java:1351)
at org.apache.hadoop.ipc.Client.call(Client.java:1300)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:206)
at com.sun.proxy.$Proxy12.setSafeMode(Unknown Source)
at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.setSafeMode(ClientNamenodeProtocolTranslatorPB.java:561)
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:186)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
at com.sun.proxy.$Proxy13.setSafeMode(Unknown Source)
at org.apache.hadoop.hdfs.DFSClient.setSafeMode(DFSClient.java:2146)
at org.apache.hadoop.hdfs.DistributedFileSystem.setSafeMode(DistributedFileSystem.java:983)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.hadoop.hbase.util.FSUtils.isInSafeMode(FSUtils.java:426)
at org.apache.hadoop.hbase.util.FSUtils.waitOnSafeMode(FSUtils.java:851)
at org.apache.hadoop.hbase.master.MasterFileSystem.checkRootDir(MasterFileSystem.java:435)
at org.apache.hadoop.hbase.master.MasterFileSystem.createInitialFileSystemLayout(MasterFileSystem.java:146)
at org.apache.hadoop.hbase.master.MasterFileSystem.<init>(MasterFileSystem.java:127)
at org.apache.hadoop.hbase.master.HMaster.finishInitialization(HMaster.java:790)
at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:607)
at java.lang.Thread.run(Thread.java:744)
Caused by: java.net.ConnectException: 拒绝连接
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:735)
at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:529)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:493)
at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:547)
at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:642)
at org.apache.hadoop.ipc.Client$Connection.access$2600(Client.java:314)
at org.apache.hadoop.ipc.Client.getConnection(Client.java:1399)
at org.apache.hadoop.ipc.Client.call(Client.java:1318)
... 25 more
2016-10-12 10:02:04,280 WARN [master:node3:60000] retry.RetryInvocationHandler: Exception while invoking class org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.setSafeMode. Not retrying because failovers (15) exceeded maximum allowed (15)
java.net.ConnectException: Call From node3/192.168.8.13 to node1:8020 failed on connection exception: java.net.ConnectException: 拒绝连接; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused
at sun.reflect.GeneratedConstructorAccessor5.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:783)
at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:730)
at org.apache.hadoop.ipc.Client.call(Client.java:1351)
at org.apache.hadoop.ipc.Client.call(Client.java:1300)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:206)
at com.sun.proxy.$Proxy12.setSafeMode(Unknown Source)
at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.setSafeMode(ClientNamenodeProtocolTranslatorPB.java:561)
at sun.reflect.GeneratedMethodAccessor7.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:186)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
at com.sun.proxy.$Proxy13.setSafeMode(Unknown Source)
at org.apache.hadoop.hdfs.DFSClient.setSafeMode(DFSClient.java:2146)
at org.apache.hadoop.hdfs.DistributedFileSystem.setSafeMode(DistributedFileSystem.java:983)
at org.apache.hadoop.hdfs.DistributedFileSystem.setSafeMode(DistributedFileSystem.java:967)
at org.apache.hadoop.hbase.util.FSUtils.isInSafeMode(FSUtils.java:432)
at org.apache.hadoop.hbase.util.FSUtils.waitOnSafeMode(FSUtils.java:851)
at org.apache.hadoop.hbase.master.MasterFileSystem.checkRootDir(MasterFileSystem.java:435)
at org.apache.hadoop.hbase.master.MasterFileSystem.createInitialFileSystemLayout(MasterFileSystem.java:146)
at org.apache.hadoop.hbase.master.MasterFileSystem.<init>(MasterFileSystem.java:127)
at org.apache.hadoop.hbase.master.HMaster.finishInitialization(HMaster.java:790)
at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:607)
at java.lang.Thread.run(Thread.java:744)
Caused by: java.net.ConnectException: 拒绝连接
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:735)
at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:529)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:493)
at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:547)
at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:642)
at org.apache.hadoop.ipc.Client$Connection.access$2600(Client.java:314)
at org.apache.hadoop.ipc.Client.getConnection(Client.java:1399)
at org.apache.hadoop.ipc.Client.call(Client.java:1318)
... 21 more
2016-10-12 10:02:04,282 FATAL [master:node3:60000] master.HMaster: Unhandled exception. Starting shutdown.
java.net.ConnectException: Call From node3/192.168.8.13 to node1:8020 failed on connection exception: java.net.ConnectException: 拒绝连接; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused
at sun.reflect.GeneratedConstructorAccessor5.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:783)
at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:730)
at org.apache.hadoop.ipc.Client.call(Client.java:1351)
at org.apache.hadoop.ipc.Client.call(Client.java:1300)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:206)
at com.sun.proxy.$Proxy12.setSafeMode(Unknown Source)
at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.setSafeMode(ClientNamenodeProtocolTranslatorPB.java:561)
at sun.reflect.GeneratedMethodAccessor7.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:186)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
at com.sun.proxy.$Proxy13.setSafeMode(Unknown Source)
at org.apache.hadoop.hdfs.DFSClient.setSafeMode(DFSClient.java:2146)
at org.apache.hadoop.hdfs.DistributedFileSystem.setSafeMode(DistributedFileSystem.java:983)
at org.apache.hadoop.hdfs.DistributedFileSystem.setSafeMode(DistributedFileSystem.java:967)
at org.apache.hadoop.hbase.util.FSUtils.isInSafeMode(FSUtils.java:432)
at org.apache.hadoop.hbase.util.FSUtils.waitOnSafeMode(FSUtils.java:851)
at org.apache.hadoop.hbase.master.MasterFileSystem.checkRootDir(MasterFileSystem.java:435)
at org.apache.hadoop.hbase.master.MasterFileSystem.createInitialFileSystemLayout(MasterFileSystem.java:146)
at org.apache.hadoop.hbase.master.MasterFileSystem.<init>(MasterFileSystem.java:127)
at org.apache.hadoop.hbase.master.HMaster.finishInitialization(HMaster.java:790)
at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:607)
at java.lang.Thread.run(Thread.java:744)
Caused by: java.net.ConnectException: 拒绝连接
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:735)
at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:529)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:493)
at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:547)
at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:642)
at org.apache.hadoop.ipc.Client$Connection.access$2600(Client.java:314)
at org.apache.hadoop.ipc.Client.getConnection(Client.java:1399)
at org.apache.hadoop.ipc.Client.call(Client.java:1318)
... 21 more

2016-10-12 10:02:04,352 ERROR [main] master.HMasterCommandLine: Master exiting
java.lang.RuntimeException: HMaster Aborted
at org.apache.hadoop.hbase.master.HMasterCommandLine.startMaster(HMasterCommandLine.java:192)
at org.apache.hadoop.hbase.master.HMasterCommandLine.run(HMasterCommandLine.java:134)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
at org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:126)
at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:2799)

而:hbase-hadoop-regionserver-node3.log中没有错误, 但是有如下:

016-10-12 09:55:51,150 INFO [main] regionserver.ShutdownHook: Installed shutdown hook thread: Shutdownhook:regionserver60020
2016-10-12 10:00:45,947 DEBUG [LruStats #0] hfile.LruBlockCache: Total=3.26 MB, free=393.42 MB, max=396.68 MB, blocks=0, accesses=0, hits=0, hitRatio=0, cachingAccesses=0, cachingHits=0, cachingHitsRatio=0,evictions=0, evicted=0, evictedPerRun=NaN
2016-10-12 10:05:45,947 DEBUG [LruStats #0] hfile.LruBlockCache: Total=3.26 MB, free=393.42 MB, max=396.68 MB, blocks=0, accesses=0, hits=0, hitRatio=0, cachingAccesses=0, cachingHits=0, cachingHitsRatio=0,evictions=0, evicted=0, evictedPerRun=NaN
2016-10-12 10:10:45,948 DEBUG [LruStats #0] hfile.LruBlockCache: Total=3.26 MB, free=393.42 MB, max=396.68 MB, blocks=0, accesses=0, hits=0, hitRatio=0, cachingAccesses=0, cachingHits=0, cachingHitsRatio=0,evictions=0, evicted=0, evictedPerRun=NaN
2016-10-12 10:15:45,948 DEBUG [LruStats #0] hfile.LruBlockCache: Total=3.26 MB, free=393.42 MB, max=396.68 MB, blocks=0, accesses=0, hits=0, hitRatio=0, cachingAccesses=0, cachingHits=0, cachingHitsRatio=0,evictions=0, evicted=0, evictedPerRun=NaN
2016-10-12 10:20:45,948 DEBUG [LruStats #0] hfile.LruBlockCache: Total=3.26 MB, free=393.42 MB, max=396.68 MB, blocks=0, accesses=0, hits=0, hitRatio=0, cachingAccesses=0, cachingHits=0, cachingHitsRatio=0,evictions=0, evicted=0, evictedPerRun=NaN
2016-10-12 10:25:45,981 DEBUG [LruStats #0] hfile.LruBlockCache: Total=3.26 MB, free=393.42 MB, max=396.68 MB, blocks=0, accesses=0, hits=0, hitRatio=0, cachingAccesses=0, cachingHits=0, cachingHitsRatio=0,evictions=0, evicted=0, evictedPerRun=NaN
2016-10-12 10:30:45,947 DEBUG [LruStats #0] hfile.LruBlockCache: Total=3.26 MB, free=393.42 MB, max=396.68 MB, blocks=0, accesses=0, hits=0, hitRatio=0, cachingAccesses=0, cachingHits=0, cachingHitsRatio=0,evictions=0, evicted=0, evictedPerRun=NaN

这是为啥, 我找了很久 , 记得以前是如下原因引起的,

1.通过hostname设置为regionserver端链接时指定的hostname即可 , 这个就是域名和主机不一致导致的, (hbase分布式部署问题之org.apache.hadoop.hbase.regionserver.HRegionServer: Unable to connect to master)

--->很快我就排除了, 因为我的hadoop的集群启动正常,故这个排除

2.时间不一致引起的,类似这个人提到(时间同步上有问题，查了一下RegionServer和Master两台机的时间，果然不一致。由于之前把主节点的时间同步而未同步子节点的时间 ,)

我在各台机子上都就行查看,用:date;hwclock -r 进行查看 , 没有问题,(如何一步到位修改linux系统时间 date -s "20091112 18:30:50" &&hwclock --systohc)

3.hbase 未成功启动 1、关闭防火墙：service iptables stop ,我有排除了, 原因是我的hadoop集群是启动的, 没有这个问题

最后, 我无奈去继续找, 去看看我之前配置hbase的配置, 是我之前有其他问题, 因为我早一个多月前试了试hbase,是没有问题,还有简单编程的尝试的,于是

查看搭建：分布式的hbase 的文档,

1.上传hbase安装包

2.解压

3.配置hbase集群，要修改3个文件（首先zk集群已经安装好了）

注意：要把hadoop的hdfs-site.xml和core-site.xml 放到hbase/conf下

3.1修改hbase-env.sh

export JAVA_HOME=/usr/java/jdk1.7.0_55

//告诉hbase使用外部的zk

export HBASE_MANAGES_ZK=false

vim hbase-site.xml

<name>hbase.rootdir</name>

<value>hdfs://ns1/hbase</value>

</property>

<name>hbase.cluster.distributed</name>

</property>

<name>hbase.zookeeper.quorum</name>

<value>itcast04:2181,itcast05:2181,itcast06:2181</value>

</property>

</configuration>

vim regionservers

itcast03

itcast04

itcast05

itcast06

3.2拷贝hbase到其他节点

scp -r /itcast/hbase-0.96.2-hadoop2/ itcast02:/itcast/

scp -r /itcast/hbase-0.96.2-hadoop2/ itcast03:/itcast/

scp -r /itcast/hbase-0.96.2-hadoop2/ itcast04:/itcast/

scp -r /itcast/hbase-0.96.2-hadoop2/ itcast05:/itcast/

scp -r /itcast/hbase-0.96.2-hadoop2/ itcast06:/itcast/

4.将配置好的HBase拷贝到每一个节点并同步时间。

5.启动所有的hbase

分别启动zk

./zkServer.sh start

启动hbase集群

start-dfs.sh

启动hbase，在主节点上运行：

start-hbase.sh

6.通过浏览器访问hbase管理页面

192.168.1.201:60010

7.为保证集群的可靠性，要启动多个HMaster

hbase-daemon.sh start master

到第三部的时候,我就发现了问题, 为啥, 原因是我之前改过那个hadoop的dfs.namenode.rpc-address.myserver.nn1的端口 <value>node1:8020</value>,

改为了

<property>
<name>dfs.namenode.rpc-address.myserver.nn2</name>
<value>node2:9000</value>
</property>

,这时候,

Call From node3/192.168.8.13 to node1:8020 failed on connection exception: java.net.ConnectException: 拒绝连接; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused

故,问题就在这里

配置问题的问题

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该问题意思是说:你有两个双引号或者你有没有关闭%>符号. 仔细检查代码出现这样的错误一般是括号.中英文字符.中英文标点.代码前面的空格,尤其是复制粘贴的代码,去掉即可.
Why are Eight Bits Enough for Deep Neural Networks&quest;
Why are Eight Bits Enough for Deep Neural Networks? Deep learning is a very weird technology. It evo ...