本篇内容主要讲解“hadoop2的automatic HA+Federation+Yarn怎么配置”，感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷，实用性强。下面就让小编来带大家学习“hadoop2的automatic HA+Federation+Yarn怎么配置”吧!
要想理解本节内容，首先需要了解hadoop1的体系结构。在本博客中和我的视频中都有相关内容，这里不再重复，只讲hadoop2的内容。
hadoop1的核心组成是两部分，即HDFS和MapReduce。在hadoop2中变为HDFS和Yarn。
新的HDFS中的NameNode不再是只有一个了，可以有多个（目前只支持2个）。每一个都有相同的职能。
这两个NameNode的地位如何哪？答：一个是active状态的，一个是standby状态的。当集群运行时，只有active状态的NameNode是正常工作的，standby状态的NameNode是处于待命状态的，时刻同步active状态NameNode的数据。一旦active状态的NameNode不能工作，通过手工或者自动切换，standby状态的NameNode就可以转变为active状态的，就可以继续工作了。这就是高可靠。
当NameNode发生故障时，他们的数据如何保持一致哪？在这里，2个NameNode的数据其实是实时共享的。新HDFS采用了一种共享机制，JournalNode集群或者NFS进行共享。NFS是操作系统层面的，JournalNode是hadoop层面的，我们这里使用JournalNode集群进行数据共享。
如何实现NameNode的自动切换哪？这就需要使用ZooKeeper集群进行选择了。HDFS集群中的两个NameNode都在ZooKeeper中注册，当active状态的NameNode出故障时，ZooKeeper能检测到这种情况，它就会自动把standby状态的NameNode切换为active状态。
HDFS Federation（HDFS联盟）是怎么回事？答：联盟的出现是有原因的。我们知道NameNode是核心节点，维护着整个HDFS中的元数据信息，那么其容量是有限的，受制于服务器的内存空间。当NameNode服务器的内存装不下数据后，那么HDFS集群就装不下数据了，寿命也就到头了。因此其扩展性是受限的。HDFS联盟指的是有多个HDFS集群同时工作，那么其容量理论上就不受限了，夸张点说就是无限扩展。
大家从官网下载的apache hadoop2.2.0的代码是32位操作系统下编译的，不能使用64位的jdk。我下面部署的hadoop代码是自己的64位机器上重新编译过的。服务器都是64位的，本配置尽量模拟真实环境。大家可以以32位的操作系统做练习，这是没关系的。关于基本环境的详细配置，大家可以观看我的视频，或者浏览吴超沉思录的相关文章。
在这里我们选用4台机器进行示范，各台机器的职责如下表格所示
| hadoop101 | hadoop102 | hadoop103 | hadoop104 | |
| 是NameNode吗? | 是，属集群c1 | 是，属集群c1 | 是，属集群c2 | 是，属集群c2 |
| 是DataNode吗？ | 是 | 是 | 是 | 是 |
| 是JournalNode吗？ | 是 | 是 | 是 | 不是 |
| 是ZooKeeper吗？ | 是 | 是 | 是 | 不是 |
| 是ZKFC吗? | 是 | 是 | 是 | 是 |
配置文件一共包括6个，分别是hadoop-env.sh、core-site.xml、hdfs-site.xml、mapred-site.xml、yarn-site.xml和slaves。除了hdfs-site.xml文件在不同集群配置不同外，其余文件在四个节点的配置是完全一样的，可以复制。
就是修改这一行内容，修改后的结果如下
export JAVA_HOME=/usr/local/jdk
【这里的JAVA_HOME的值是jdk的安装路径。如果你那里不一样，请修改为自己的地址】
<configuration>
<property>
<name>fs.defaultFS</name>
<value>hdfs://cluster1</value>
</property>
【这里的值指的是默认的HDFS路径。当有多个HDFS集群同时工作时，用户如果不写集群名称，那么默认使用哪个哪？在这里指定！该值来自于hdfs-site.xml中的配置】
<property>
<name>hadoop.tmp.dir</name>
<value>/usr/local/hadoop/tmp</value>
</property>
【这里的路径默认是NameNode、DataNode、JournalNode等存放数据的公共目录。用户也可以自己单独指定这三类节点的目录。】
<property>
<name>ha.zookeeper.quorum</name>
<value>hadoop101:2181,hadoop102:2181,hadoop103:2181</value>
</property>
【这里是ZooKeeper集群的地址和端口。注意，数量一定是奇数，且不少于三个节点】
</configuration>
该文件只配置在hadoop101和hadoop102上。
<configuration>
<property>
<name>dfs.replication</name>
<value>2</value>
</property>
【指定DataNode存储block的副本数量。默认值是3个，我们现在有4个DataNode，该值不大于4即可。】
<property>
<name>dfs.nameservices</name>
<value>cluster1,cluster2</value>
</property>
【使用federation时，使用了2个HDFS集群。这里抽象出两个NameService实际上就是给这2个HDFS集群起了个别名。名字可以随便起，相互不重复即可】
<property>
<name>dfs.ha.namenodes.cluster1</name>
<value>hadoop101,hadoop102</value>
</property>
【指定NameService是cluster1时的namenode有哪些，这里的值也是逻辑名称，名字随便起，相互不重复即可】
<property>
<name>dfs.namenode.rpc-address.cluster1.hadoop101</name>
<value>hadoop101:9000</value>
</property>
【指定hadoop101的RPC地址】
<property>
<name>dfs.namenode.http-address.cluster1.hadoop101</name>
<value>hadoop101:50070</value>
</property>
【指定hadoop101的http地址】
<property>
<name>dfs.namenode.rpc-address.cluster1.hadoop102</name>
<value>hadoop102:9000</value>
</property>
【指定hadoop102的RPC地址】
<property>
<name>dfs.namenode.http-address.cluster1.hadoop102</name>
<value>hadoop102:50070</value>
</property>
【指定hadoop102的http地址】
<property>
<name>dfs.namenode.shared.edits.dir</name>
<value>qjournal://hadoop101:8485;hadoop102:8485;hadoop103:8485/cluster1</value>
</property>
【指定cluster1的两个NameNode共享edits文件目录时，使用的JournalNode集群信息】
<property>
<name>dfs.ha.automatic-failover.enabled.cluster1</name>
<value>true</value>
</property>
【指定cluster1是否启动自动故障恢复，即当NameNode出故障时，是否自动切换到另一台NameNode】
<property>
<name>dfs.client.failover.proxy.provider.cluster1</name>
<value>org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider</value>
</property>
【指定cluster1出故障时，哪个实现类负责执行故障切换】
<property>
<name>dfs.ha.namenodes.cluster2</name>
<value>hadoop103,hadoop104</value>
</property>
【指定NameService是cluster2时，两个NameNode是谁，这里是逻辑名称，不重复即可。以下配置与cluster1几乎全部相似，不再添加注释】
<property>
<name>dfs.namenode.rpc-address.cluster2.hadoop103</name>
<value>hadoop103:9000</value>
</property>
<property>
<name>dfs.namenode.http-address.cluster2.hadoop103</name>
<value>hadoop103:50070</value>
</property>
<property>
<name>dfs.namenode.rpc-address.cluster2.hadoop104</name>
<value>hadoop104:9000</value>
</property>
<property>
<name>dfs.namenode.http-address.cluster2.hadoop104</name>
<value>hadoop104:50070</value>
</property>
<!--
<property>
<name>dfs.namenode.shared.edits.dir</name>
<value>qjournal://hadoop101:8485;hadoop102:8485;hadoop103:8485/cluster2</value>
</property>
【这段代码是注释掉的，不要打开】
-->
<property>
<name>dfs.ha.automatic-failover.enabled.cluster2</name>
<value>true</value>
</property>
<property>
<name>dfs.client.failover.proxy.provider.cluster2</name>
<value>org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider</value>
</property>
<property>
<name>dfs.journalnode.edits.dir</name>
<value>/usr/local/hadoop/tmp/journal</value>
</property>
【指定JournalNode集群在对NameNode的目录进行共享时，自己存储数据的磁盘路径】
<property>
<name>dfs.ha.fencing.methods</name>
<value>sshfence</value>
</property>
【一旦需要NameNode切换，使用ssh方式进行操作】
<property>
<name>dfs.ha.fencing.ssh.private-key-files</name>
<value>/root/.ssh/id_rsa</value>
</property>
【如果使用ssh进行故障切换，使用ssh通信时用的密钥存储的位置】
</configuration>
该文件只配置在hadoop103和hadoop104上。
该文件与c1中的hdfs-site.xml配置内容完全相同，只有注释位置不一样，一定要注意，不要随便改
<configuration>
<property>
<name>dfs.replication</name>
<value>2</value>
</property>
<property>
<name>dfs.nameservices</name>
<value>cluster1,cluster2</value>
</property>
<property>
<name>dfs.ha.namenodes.cluster1</name>
<value>hadoop101,hadoop102</value>
</property>
<property>
<name>dfs.namenode.rpc-address.cluster1.hadoop101</name>
<value>hadoop101:9000</value>
</property>
<property>
<name>dfs.namenode.http-address.cluster1.hadoop101</name>
<value>hadoop101:50070</value>
</property>
<property>
<name>dfs.namenode.rpc-address.cluster1.hadoop102</name>
<value>hadoop102:9000</value>
</property>
<property>
<name>dfs.namenode.http-address.cluster1.hadoop102</name>
<value>hadoop102:50070</value>
</property>
<!--
<property>
<name>dfs.namenode.shared.edits.dir</name>
<value>qjournal://hadoop101:8485;hadoop102:8485;hadoop103:8485/cluster1</value>
</property>
【这段代码是注释掉的，不要打开】
-->
<property>
<name>dfs.ha.automatic-failover.enabled.cluster1</name>
<value>true</value>
</property>
<property>
<name>dfs.client.failover.proxy.provider.cluster1</name>
<value>org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider</value>
</property>
<property>
<name>dfs.ha.namenodes.cluster2</name>
<value>hadoop103,hadoop104</value>
</property>
<property>
<name>dfs.namenode.rpc-address.cluster2.hadoop103</name>
<value>hadoop103:9000</value>
</property>
<property>
<name>dfs.namenode.http-address.cluster2.hadoop103</name>
<value>hadoop103:50070</value>
</property>
<property>
<name>dfs.namenode.rpc-address.cluster2.hadoop104</name>
<value>hadoop104:9000</value>
</property>
<property>
<name>dfs.namenode.http-address.cluster2.hadoop104</name>
<value>hadoop104:50070</value>
</property>
<property>
<name>dfs.namenode.shared.edits.dir</name>
<value>qjournal://hadoop101:8485;hadoop102:8485;hadoop103:8485/cluster2</value>
</property>
<property>
<name>dfs.ha.automatic-failover.enabled.cluster2</name>
<value>true</value>
</property>
<property>
<name>dfs.client.failover.proxy.provider.cluster2</name>
<value>org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider</value>
</property>
<property>
<name>dfs.journalnode.edits.dir</name>
<value>/usr/local/hadoop/tmp/journal</value>
</property>
<property>
<name>dfs.ha.fencing.methods</name>
<value>sshfence</value>
</property>
<property>
<name>dfs.ha.fencing.ssh.private-key-files</name>
<value>/root/.ssh/id_rsa</value>
</property>
</configuration>
<configuration>
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
【指定运行mapreduce的环境是yarn，与hadoop1截然不同的地方】
</configuration>
<configuration>
<property>
<name>yarn.resourcemanager.hostname</name>
<value>hadoop101</value>
</property>
【自定ResourceManager的地址，还是单点，这是隐患】
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
</configuration>
hadoop101
hadoop102
hadoop103
hadoop104
【指定所有的DataNode节点列表，每行一个节点名称】
注意：以上配置中c1中的hdfs-site.xml文件配置在hadoop101和hadoop102中，c2中的hdfs-site.xml文件配置在hadoop103和hadoop104中。其余文件在各个节点都相同。
启动时，要非常小心，请严格按照我这里描述的步骤做，每一步要检查自己的操作是否正确。
特别要注意hdfs-site.xml文件，在c1和c2中是不同的。
关于ZooKeeper的集群配置和启动描述见吴超沉思录，这里不再详述。
在hadoop101、hadoop102、hadoop103上分别执行命令：zkServer.sh start
命令输出(以hadoop101为例)：
[root@hadoop101 hadoop]# zkServer.sh status
JMX enabled by default
Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg
Mode: follower
三个节点都执行完启动命令后，在hadoop101执行以下验证。
验证：
[root@hadoop101 hadoop]# zkCli.sh
Connecting to localhost:2181
2014-02-12 07:20:35,509 [myid:] - INFO [main:Environment@100] - Client environment:zookeeper.version=3.4.5-1392090, built on 09/30/2012 17:52 GMT
2014-02-12 07:20:35,523 [myid:] - INFO [main:Environment@100] - Client environment:host.name=hadoop101
2014-02-12 07:20:35,524 [myid:] - INFO [main:Environment@100] - Client environment:java.version=1.7.0_45
2014-02-12 07:20:35,525 [myid:] - INFO [main:Environment@100] - Client environment:java.vendor=Oracle Corporation
2014-02-12 07:20:35,525 [myid:] - INFO [main:Environment@100] - Client environment:java.home=/usr/local/jdk/jre
2014-02-12 07:20:35,526 [myid:] - INFO [main:Environment@100] - Client environment:java.class.path=/usr/local/zookeeper/bin/../build/classes:/usr/local/zookeeper/bin/../build/lib/*.jar:/usr/local/zookeeper/bin/../lib/slf4j-log4j12-1.6.1.jar:/usr/local/zookeeper/bin/../lib/slf4j-api-1.6.1.jar:/usr/local/zookeeper/bin/../lib/netty-3.2.2.Final.jar:/usr/local/zookeeper/bin/../lib/log4j-1.2.15.jar:/usr/local/zookeeper/bin/../lib/jline-0.9.94.jar:/usr/local/zookeeper/bin/../zookeeper-3.4.5.jar:/usr/local/zookeeper/bin/../src/java/lib/*.jar:/usr/local/zookeeper/bin/../conf:/usr/local/hadoop
2014-02-12 07:20:35,526 [myid:] - INFO [main:Environment@100] - Client environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
2014-02-12 07:20:35,527 [myid:] - INFO [main:Environment@100] - Client environment:java.io.tmpdir=/tmp
2014-02-12 07:20:35,528 [myid:] - INFO [main:Environment@100] - Client environment:java.compiler=<NA>
2014-02-12 07:20:35,528 [myid:] - INFO [main:Environment@100] - Client environment:os.name=Linux
2014-02-12 07:20:35,529 [myid:] - INFO [main:Environment@100] - Client environment:os.arch=amd64
2014-02-12 07:20:35,529 [myid:] - INFO [main:Environment@100] - Client environment:os.version=2.6.32-431.el6.x86_64
2014-02-12 07:20:35,530 [myid:] - INFO [main:Environment@100] - Client environment:user.name=root
2014-02-12 07:20:35,530 [myid:] - INFO [main:Environment@100] - Client environment:user.home=/root
2014-02-12 07:20:35,531 [myid:] - INFO [main:Environment@100] - Client environment:user.dir=/usr/local/hadoop
2014-02-12 07:20:35,533 [myid:] - INFO [main:ZooKeeper@438] - Initiating client connection, connectString=localhost:2181 sessionTimeout=30000 watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@10636a7e
Welcome to ZooKeeper!
2014-02-12 07:20:35,569 [myid:] - INFO [main-SendThread(127.0.0.1:2181):ClientCnxn$SendThread@966] - Opening socket connection to server 127.0.0.1/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
2014-02-12 07:20:35,587 [myid:] - INFO [main-SendThread(127.0.0.1:2181):ClientCnxn$SendThread@849] - Socket connection established to 127.0.0.1/127.0.0.1:2181, initiating session
JLine support is enabled
2014-02-12 07:20:35,687 [myid:] - INFO [main-SendThread(127.0.0.1:2181):ClientCnxn$SendThread@1207] - Session establishment complete on server 127.0.0.1/127.0.0.1:2181, sessionid = 0x654423404e530000, negotiated timeout = 30000
WATCHER::
WatchedEvent state:SyncConnected type:None path:null
[zk: localhost:2181(CONNECTED) 0] ls /
[zookeeper]
[zk: localhost:2181(CONNECTED) 1]
【可以看到ZK集群 中只有一个节点zookeeper】
在hadoop101上执行命令：/usr/local/hadoop/bin/hdfs zkfc –formatZK
命令输出：
[root@hadoop101 hadoop]# /usr/local/hadoop/bin/hdfs zkfc -formatZK
14/02/12 07:28:56 INFO tools.DFSZKFailoverController: Failover controller configured for NameNode NameNode at hadoop101/192.168.80.101:9000
14/02/12 07:28:57 INFO zookeeper.ZooKeeper: Client environment:zookeeper.version=3.4.5-1392090, built on 09/30/2012 17:52 GMT
14/02/12 07:28:57 INFO zookeeper.ZooKeeper: Client environment:host.name=hadoop101
14/02/12 07:28:57 INFO zookeeper.ZooKeeper: Client environment:java.version=1.7.0_45
14/02/12 07:28:57 INFO zookeeper.ZooKeeper: Client environment:java.vendor=Oracle Corporation
14/02/12 07:28:57 INFO zookeeper.ZooKeeper: Client environment:java.home=/usr/local/jdk/jre
14/02/12 07:28:57 INFO zookeeper.ZooKeeper: Client environment:java.class.path=/usr/local/hadoop/etc/hadoop:/usr/local/hadoop/share/hadoop/common/lib/protobuf-java-2.5.0.jar:/usr/local/hadoop/share/hadoop/common/lib/snappy-java-1.0.4.1.jar:/usr/local/hadoop/share/hadoop/common/lib/jsch-0.1.42.jar:/usr/local/hadoop/share/hadoop/common/lib/jersey-server-1.9.jar:/usr/local/hadoop/share/hadoop/common/lib/slf4j-log4j12-1.7.5.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-digester-1.8.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-cli-1.2.jar:/usr/local/hadoop/share/hadoop/common/lib/jackson-core-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-el-1.0.jar:/usr/local/hadoop/share/hadoop/common/lib/jets3t-0.6.1.jar:/usr/local/hadoop/share/hadoop/common/lib/jersey-core-1.9.jar:/usr/local/hadoop/share/hadoop/common/lib/slf4j-api-1.7.5.jar:/usr/local/hadoop/share/hadoop/common/lib/xz-1.0.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-lang-2.5.jar:/usr/local/hadoop/share/hadoop/common/lib/jasper-runtime-5.5.23.jar:/usr/local/hadoop/share/hadoop/common/lib/jackson-xc-1.8.8.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-codec-1.4.jar:/usr/local/hadoop/share/hadoop/common/lib/activation-1.1.jar:/usr/local/hadoop/share/hadoop/common/lib/avro-1.7.4.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-httpclient-3.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-beanutils-1.7.0.jar:/usr/local/hadoop/share/hadoop/common/lib/hadoop-annotations-2.2.0.jar:/usr/local/hadoop/share/hadoop/common/lib/jsp-api-2.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-compress-1.4.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-beanutils-core-1.8.0.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-configuration-1.6.jar:/usr/local/hadoop/share/hadoop/common/lib/jaxb-impl-2.2.3-1.jar:/usr/local/hadoop/share/hadoop/common/lib/zookeeper-3.4.5.jar:/usr/local/hadoop/share/hadoop/common/lib/hadoop-auth-2.2.0.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-io-2.1.jar:/usr/local/hadoop/share/hadoop/common/lib/netty-3.6.2.Final.jar:/usr/local/hadoop/share/hadoop/common/lib/stax-api-1.0.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-collections-3.2.1.jar:/usr/local/hadoop/share/hadoop/common/lib/servlet-api-2.5.jar:/usr/local/hadoop/share/hadoop/common/lib/junit-4.8.2.jar:/usr/local/hadoop/share/hadoop/common/lib/jetty-util-6.1.26.jar:/usr/local/hadoop/share/hadoop/common/lib/jackson-mapper-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/common/lib/jsr305-1.3.9.jar:/usr/local/hadoop/share/hadoop/common/lib/mockito-all-1.8.5.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-logging-1.1.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-math-2.1.jar:/usr/local/hadoop/share/hadoop/common/lib/jaxb-api-2.2.2.jar:/usr/local/hadoop/share/hadoop/common/lib/jersey-json-1.9.jar:/usr/local/hadoop/share/hadoop/common/lib/asm-3.2.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-net-3.1.jar:/usr/local/hadoop/share/hadoop/common/lib/jetty-6.1.26.jar:/usr/local/hadoop/share/hadoop/common/lib/jasper-compiler-5.5.23.jar:/usr/local/hadoop/share/hadoop/common/lib/guava-11.0.2.jar:/usr/local/hadoop/share/hadoop/common/lib/xmlenc-0.52.jar:/usr/local/hadoop/share/hadoop/common/lib/log4j-1.2.17.jar:/usr/local/hadoop/share/hadoop/common/lib/paranamer-2.3.jar:/usr/local/hadoop/share/hadoop/common/lib/jackson-jaxrs-1.8.8.jar:/usr/local/hadoop/share/hadoop/common/lib/jettison-1.1.jar:/usr/local/hadoop/share/hadoop/common/hadoop-common-2.2.0-tests.jar:/usr/local/hadoop/share/hadoop/common/hadoop-common-2.2.0.jar:/usr/local/hadoop/share/hadoop/common/hadoop-nfs-2.2.0.jar:/usr/local/hadoop/share/hadoop/hdfs:/usr/local/hadoop/share/hadoop/hdfs/lib/protobuf-java-2.5.0.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jersey-server-1.9.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-cli-1.2.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jackson-core-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-el-1.0.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jersey-core-1.9.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-daemon-1.0.13.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-lang-2.5.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jasper-runtime-5.5.23.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-codec-1.4.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jsp-api-2.1.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-io-2.1.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/netty-3.6.2.Final.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/servlet-api-2.5.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jetty-util-6.1.26.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jackson-mapper-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jsr305-1.3.9.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-logging-1.1.1.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/asm-3.2.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jetty-6.1.26.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/guava-11.0.2.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/xmlenc-0.52.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/log4j-1.2.17.jar:/usr/local/hadoop/share/hadoop/hdfs/hadoop-hdfs-nfs-2.2.0.jar:/usr/local/hadoop/share/hadoop/hdfs/hadoop-hdfs-2.2.0-tests.jar:/usr/local/hadoop/share/hadoop/hdfs/hadoop-hdfs-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/protobuf-java-2.5.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/snappy-java-1.0.4.1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jersey-server-1.9.jar:/usr/local/hadoop/share/hadoop/yarn/lib/guice-3.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jackson-core-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jersey-core-1.9.jar:/usr/local/hadoop/share/hadoop/yarn/lib/xz-1.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/hamcrest-core-1.1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/avro-1.7.4.jar:/usr/local/hadoop/share/hadoop/yarn/lib/aopalliance-1.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/hadoop-annotations-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/commons-compress-1.4.1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/javax.inject-1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/guice-servlet-3.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/commons-io-2.1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/netty-3.6.2.Final.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jackson-mapper-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/yarn/lib/asm-3.2.jar:/usr/local/hadoop/share/hadoop/yarn/lib/junit-4.10.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jersey-guice-1.9.jar:/usr/local/hadoop/share/hadoop/yarn/lib/log4j-1.2.17.jar:/usr/local/hadoop/share/hadoop/yarn/lib/paranamer-2.3.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-api-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-tests-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-site-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-client-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-nodemanager-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-applications-distributedshell-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-resourcemanager-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-web-proxy-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-applications-unmanaged-am-launcher-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-common-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-common-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/protobuf-java-2.5.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/snappy-java-1.0.4.1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jersey-server-1.9.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/guice-3.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jackson-core-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jersey-core-1.9.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/xz-1.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/hamcrest-core-1.1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/avro-1.7.4.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/aopalliance-1.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/hadoop-annotations-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/commons-compress-1.4.1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/javax.inject-1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/guice-servlet-3.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/commons-io-2.1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/netty-3.6.2.Final.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jackson-mapper-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/asm-3.2.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/junit-4.10.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jersey-guice-1.9.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/log4j-1.2.17.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/paranamer-2.3.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-hs-plugins-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.2.0-tests.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-app-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-core-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-shuffle-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-hs-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-common-2.2.0.jar:/usr/local/hadoop/contrib/capacity-scheduler/*.jar
14/02/12 07:28:57 INFO zookeeper.ZooKeeper: Client environment:java.library.path=/usr/local/hadoop/lib/native
14/02/12 07:28:57 INFO zookeeper.ZooKeeper: Client environment:java.io.tmpdir=/tmp
14/02/12 07:28:57 INFO zookeeper.ZooKeeper: Client environment:java.compiler=<NA>
14/02/12 07:28:57 INFO zookeeper.ZooKeeper: Client environment:os.name=Linux
14/02/12 07:28:57 INFO zookeeper.ZooKeeper: Client environment:os.arch=amd64
14/02/12 07:28:57 INFO zookeeper.ZooKeeper: Client environment:os.version=2.6.32-431.el6.x86_64
14/02/12 07:28:57 INFO zookeeper.ZooKeeper: Client environment:user.name=root
14/02/12 07:28:57 INFO zookeeper.ZooKeeper: Client environment:user.home=/root
14/02/12 07:28:57 INFO zookeeper.ZooKeeper: Client environment:user.dir=/usr/local/hadoop
14/02/12 07:28:57 INFO zookeeper.ZooKeeper: Initiating client connection, connectString=hadoop101:2181,hadoop102:2181,hadoop103:2181 sessionTimeout=5000 watcher=org.apache.hadoop.ha.ActiveStandbyElector$WatcherWithClientRef@3e9c00ea
14/02/12 07:28:57 INFO zookeeper.ClientCnxn: Opening socket connection to server hadoop102/192.168.80.102:2181. Will not attempt to authenticate using SASL (unknown error)
14/02/12 07:28:57 INFO zookeeper.ClientCnxn: Socket connection established to hadoop102/192.168.80.102:2181, initiating session
14/02/12 07:28:57 INFO zookeeper.ClientCnxn: Session establishment complete on server hadoop102/192.168.80.102:2181, sessionid = 0x6644234039710000, negotiated timeout = 5000
14/02/12 07:28:57 INFO ha.ActiveStandbyElector: Session connected.
14/02/12 07:28:57 INFO ha.ActiveStandbyElector: Successfully created /hadoop-ha/cluster1 in ZK.
14/02/12 07:28:57 INFO zookeeper.ZooKeeper: Session: 0x6644234039710000 closed
14/02/12 07:28:57 INFO zookeeper.ClientCnxn: EventThread shut down
[root@hadoop101 hadoop]#
验证：
[root@hadoop101 hadoop]# zkCli.sh
Connecting to localhost:2181
2014-02-12 07:30:24,355 [myid:] - INFO [main:Environment@100] - Client environment:zookeeper.version=3.4.5-1392090, built on 09/30/2012 17:52 GMT
2014-02-12 07:30:24,373 [myid:] - INFO [main:Environment@100] - Client environment:host.name=hadoop101
2014-02-12 07:30:24,374 [myid:] - INFO [main:Environment@100] - Client environment:java.version=1.7.0_45
2014-02-12 07:30:24,375 [myid:] - INFO [main:Environment@100] - Client environment:java.vendor=Oracle Corporation
2014-02-12 07:30:24,376 [myid:] - INFO [main:Environment@100] - Client environment:java.home=/usr/local/jdk/jre
2014-02-12 07:30:24,376 [myid:] - INFO [main:Environment@100] - Client environment:java.class.path=/usr/local/zookeeper/bin/../build/classes:/usr/local/zookeeper/bin/../build/lib/*.jar:/usr/local/zookeeper/bin/../lib/slf4j-log4j12-1.6.1.jar:/usr/local/zookeeper/bin/../lib/slf4j-api-1.6.1.jar:/usr/local/zookeeper/bin/../lib/netty-3.2.2.Final.jar:/usr/local/zookeeper/bin/../lib/log4j-1.2.15.jar:/usr/local/zookeeper/bin/../lib/jline-0.9.94.jar:/usr/local/zookeeper/bin/../zookeeper-3.4.5.jar:/usr/local/zookeeper/bin/../src/java/lib/*.jar:/usr/local/zookeeper/bin/../conf:/usr/local/hadoop
2014-02-12 07:30:24,378 [myid:] - INFO [main:Environment@100] - Client environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
2014-02-12 07:30:24,379 [myid:] - INFO [main:Environment@100] - Client environment:java.io.tmpdir=/tmp
2014-02-12 07:30:24,380 [myid:] - INFO [main:Environment@100] - Client environment:java.compiler=<NA>
2014-02-12 07:30:24,381 [myid:] - INFO [main:Environment@100] - Client environment:os.name=Linux
2014-02-12 07:30:24,382 [myid:] - INFO [main:Environment@100] - Client environment:os.arch=amd64
2014-02-12 07:30:24,382 [myid:] - INFO [main:Environment@100] - Client environment:os.version=2.6.32-431.el6.x86_64
2014-02-12 07:30:24,383 [myid:] - INFO [main:Environment@100] - Client environment:user.name=root
2014-02-12 07:30:24,383 [myid:] - INFO [main:Environment@100] - Client environment:user.home=/root
2014-02-12 07:30:24,384 [myid:] - INFO [main:Environment@100] - Client environment:user.dir=/usr/local/hadoop
2014-02-12 07:30:24,387 [myid:] - INFO [main:ZooKeeper@438] - Initiating client connection, connectString=localhost:2181 sessionTimeout=30000 watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@10636a7e
Welcome to ZooKeeper!
2014-02-12 07:30:24,422 [myid:] - INFO [main-SendThread(127.0.0.1:2181):ClientCnxn$SendThread@966] - Opening socket connection to server 127.0.0.1/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
2014-02-12 07:30:24,462 [myid:] - INFO [main-SendThread(127.0.0.1:2181):ClientCnxn$SendThread@849] - Socket connection established to 127.0.0.1/127.0.0.1:2181, initiating session
JLine support is enabled
2014-02-12 07:30:24,494 [myid:] - INFO [main-SendThread(127.0.0.1:2181):ClientCnxn$SendThread@1207] - Session establishment complete on server 127.0.0.1/127.0.0.1:2181, sessionid = 0x654423404e530001, negotiated timeout = 30000
WATCHER::
WatchedEvent state:SyncConnected type:None path:null
[zk: localhost:2181(CONNECTED) 0] ls /
[hadoop-ha, zookeeper]
[zk: localhost:2181(CONNECTED) 1] ls /hadoop-ha
[cluster1]
[zk: localhost:2181(CONNECTED) 2]
【格式化操作的目的是在ZK集群中建立一个节点，用于保存集群c1中NameNode的状态数据】
在hadoop103上执行命令：/usr/local/hadoop/bin/hdfs zkfc –formatZK
命令输出：
[root@hadoop103 hadoop]# /usr/local/hadoop/bin/hdfs zkfc -formatZK
14/02/12 07:32:14 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
14/02/12 07:32:14 INFO tools.DFSZKFailoverController: Failover controller configured for NameNode NameNode at hadoop103/192.168.80.103:9000
14/02/12 07:32:14 INFO zookeeper.ZooKeeper: Client environment:zookeeper.version=3.4.5-1392090, built on 09/30/2012 17:52 GMT
14/02/12 07:32:14 INFO zookeeper.ZooKeeper: Client environment:host.name=hadoop103
14/02/12 07:32:14 INFO zookeeper.ZooKeeper: Client environment:java.version=1.7.0_45
14/02/12 07:32:14 INFO zookeeper.ZooKeeper: Client environment:java.vendor=Oracle Corporation
14/02/12 07:32:14 INFO zookeeper.ZooKeeper: Client environment:java.home=/usr/local/jdk/jre
14/02/12 07:32:14 INFO zookeeper.ZooKeeper: Client environment:java.class.path=/usr/local/hadoop/etc/hadoop:/usr/local/hadoop/share/hadoop/common/lib/protobuf-java-2.5.0.jar:/usr/local/hadoop/share/hadoop/common/lib/snappy-java-1.0.4.1.jar:/usr/local/hadoop/share/hadoop/common/lib/jsch-0.1.42.jar:/usr/local/hadoop/share/hadoop/common/lib/jersey-server-1.9.jar:/usr/local/hadoop/share/hadoop/common/lib/slf4j-log4j12-1.7.5.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-digester-1.8.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-cli-1.2.jar:/usr/local/hadoop/share/hadoop/common/lib/jackson-core-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-el-1.0.jar:/usr/local/hadoop/share/hadoop/common/lib/jets3t-0.6.1.jar:/usr/local/hadoop/share/hadoop/common/lib/jersey-core-1.9.jar:/usr/local/hadoop/share/hadoop/common/lib/slf4j-api-1.7.5.jar:/usr/local/hadoop/share/hadoop/common/lib/xz-1.0.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-lang-2.5.jar:/usr/local/hadoop/share/hadoop/common/lib/jasper-runtime-5.5.23.jar:/usr/local/hadoop/share/hadoop/common/lib/jackson-xc-1.8.8.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-codec-1.4.jar:/usr/local/hadoop/share/hadoop/common/lib/activation-1.1.jar:/usr/local/hadoop/share/hadoop/common/lib/avro-1.7.4.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-httpclient-3.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-beanutils-1.7.0.jar:/usr/local/hadoop/share/hadoop/common/lib/hadoop-annotations-2.2.0.jar:/usr/local/hadoop/share/hadoop/common/lib/jsp-api-2.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-compress-1.4.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-beanutils-core-1.8.0.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-configuration-1.6.jar:/usr/local/hadoop/share/hadoop/common/lib/jaxb-impl-2.2.3-1.jar:/usr/local/hadoop/share/hadoop/common/lib/zookeeper-3.4.5.jar:/usr/local/hadoop/share/hadoop/common/lib/hadoop-auth-2.2.0.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-io-2.1.jar:/usr/local/hadoop/share/hadoop/common/lib/netty-3.6.2.Final.jar:/usr/local/hadoop/share/hadoop/common/lib/stax-api-1.0.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-collections-3.2.1.jar:/usr/local/hadoop/share/hadoop/common/lib/servlet-api-2.5.jar:/usr/local/hadoop/share/hadoop/common/lib/junit-4.8.2.jar:/usr/local/hadoop/share/hadoop/common/lib/jetty-util-6.1.26.jar:/usr/local/hadoop/share/hadoop/common/lib/jackson-mapper-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/common/lib/jsr305-1.3.9.jar:/usr/local/hadoop/share/hadoop/common/lib/mockito-all-1.8.5.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-logging-1.1.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-math-2.1.jar:/usr/local/hadoop/share/hadoop/common/lib/jaxb-api-2.2.2.jar:/usr/local/hadoop/share/hadoop/common/lib/jersey-json-1.9.jar:/usr/local/hadoop/share/hadoop/common/lib/asm-3.2.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-net-3.1.jar:/usr/local/hadoop/share/hadoop/common/lib/jetty-6.1.26.jar:/usr/local/hadoop/share/hadoop/common/lib/jasper-compiler-5.5.23.jar:/usr/local/hadoop/share/hadoop/common/lib/guava-11.0.2.jar:/usr/local/hadoop/share/hadoop/common/lib/xmlenc-0.52.jar:/usr/local/hadoop/share/hadoop/common/lib/log4j-1.2.17.jar:/usr/local/hadoop/share/hadoop/common/lib/paranamer-2.3.jar:/usr/local/hadoop/share/hadoop/common/lib/jackson-jaxrs-1.8.8.jar:/usr/local/hadoop/share/hadoop/common/lib/jettison-1.1.jar:/usr/local/hadoop/share/hadoop/common/hadoop-common-2.2.0-tests.jar:/usr/local/hadoop/share/hadoop/common/hadoop-common-2.2.0.jar:/usr/local/hadoop/share/hadoop/common/hadoop-nfs-2.2.0.jar:/usr/local/hadoop/share/hadoop/hdfs:/usr/local/hadoop/share/hadoop/hdfs/lib/protobuf-java-2.5.0.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jersey-server-1.9.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-cli-1.2.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jackson-core-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-el-1.0.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jersey-core-1.9.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-daemon-1.0.13.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-lang-2.5.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jasper-runtime-5.5.23.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-codec-1.4.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jsp-api-2.1.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-io-2.1.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/netty-3.6.2.Final.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/servlet-api-2.5.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jetty-util-6.1.26.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jackson-mapper-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jsr305-1.3.9.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-logging-1.1.1.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/asm-3.2.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jetty-6.1.26.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/guava-11.0.2.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/xmlenc-0.52.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/log4j-1.2.17.jar:/usr/local/hadoop/share/hadoop/hdfs/hadoop-hdfs-nfs-2.2.0.jar:/usr/local/hadoop/share/hadoop/hdfs/hadoop-hdfs-2.2.0-tests.jar:/usr/local/hadoop/share/hadoop/hdfs/hadoop-hdfs-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/protobuf-java-2.5.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/snappy-java-1.0.4.1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jersey-server-1.9.jar:/usr/local/hadoop/share/hadoop/yarn/lib/guice-3.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jackson-core-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jersey-core-1.9.jar:/usr/local/hadoop/share/hadoop/yarn/lib/xz-1.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/hamcrest-core-1.1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/avro-1.7.4.jar:/usr/local/hadoop/share/hadoop/yarn/lib/aopalliance-1.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/hadoop-annotations-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/commons-compress-1.4.1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/javax.inject-1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/guice-servlet-3.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/commons-io-2.1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/netty-3.6.2.Final.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jackson-mapper-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/yarn/lib/asm-3.2.jar:/usr/local/hadoop/share/hadoop/yarn/lib/junit-4.10.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jersey-guice-1.9.jar:/usr/local/hadoop/share/hadoop/yarn/lib/log4j-1.2.17.jar:/usr/local/hadoop/share/hadoop/yarn/lib/paranamer-2.3.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-api-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-tests-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-site-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-client-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-nodemanager-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-applications-distributedshell-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-resourcemanager-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-web-proxy-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-applications-unmanaged-am-launcher-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-common-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-common-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/protobuf-java-2.5.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/snappy-java-1.0.4.1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jersey-server-1.9.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/guice-3.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jackson-core-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jersey-core-1.9.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/xz-1.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/hamcrest-core-1.1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/avro-1.7.4.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/aopalliance-1.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/hadoop-annotations-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/commons-compress-1.4.1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/javax.inject-1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/guice-servlet-3.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/commons-io-2.1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/netty-3.6.2.Final.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jackson-mapper-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/asm-3.2.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/junit-4.10.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jersey-guice-1.9.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/log4j-1.2.17.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/paranamer-2.3.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-hs-plugins-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.2.0-tests.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-app-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-core-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-shuffle-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-hs-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-common-2.2.0.jar:/usr/local/hadoop/contrib/capacity-scheduler/*.jar
14/02/12 07:32:14 INFO zookeeper.ZooKeeper: Client environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
14/02/12 07:32:14 INFO zookeeper.ZooKeeper: Client environment:java.io.tmpdir=/tmp
14/02/12 07:32:14 INFO zookeeper.ZooKeeper: Client environment:java.compiler=<NA>
14/02/12 07:32:14 INFO zookeeper.ZooKeeper: Client environment:os.name=Linux
14/02/12 07:32:14 INFO zookeeper.ZooKeeper: Client environment:os.arch=amd64
14/02/12 07:32:14 INFO zookeeper.ZooKeeper: Client environment:os.version=2.6.32-431.el6.x86_64
14/02/12 07:32:14 INFO zookeeper.ZooKeeper: Client environment:user.name=root
14/02/12 07:32:14 INFO zookeeper.ZooKeeper: Client environment:user.home=/root
14/02/12 07:32:14 INFO zookeeper.ZooKeeper: Client environment:user.dir=/usr/local/hadoop
14/02/12 07:32:14 INFO zookeeper.ZooKeeper: Initiating client connection, connectString=hadoop101:2181,hadoop102:2181,hadoop103:2181 sessionTimeout=5000 watcher=org.apache.hadoop.ha.ActiveStandbyElector$WatcherWithClientRef@91d3b18
14/02/12 07:32:14 INFO zookeeper.ClientCnxn: Opening socket connection to server hadoop102/192.168.80.102:2181. Will not attempt to authenticate using SASL (unknown error)
14/02/12 07:32:14 INFO zookeeper.ClientCnxn: Socket connection established to hadoop102/192.168.80.102:2181, initiating session
14/02/12 07:32:14 INFO zookeeper.ClientCnxn: Session establishment complete on server hadoop102/192.168.80.102:2181, sessionid = 0x6644234039710001, negotiated timeout = 5000
14/02/12 07:32:14 INFO ha.ActiveStandbyElector: Session connected.
14/02/12 07:32:14 INFO ha.ActiveStandbyElector: Successfully created /hadoop-ha/cluster2 in ZK.
14/02/12 07:32:14 INFO zookeeper.ZooKeeper: Session: 0x6644234039710001 closed
14/02/12 07:32:14 INFO zookeeper.ClientCnxn: EventThread shut down
验证：
[root@hadoop103 hadoop]# zkCli.sh
Connecting to localhost:2181
2014-02-12 07:32:21,770 [myid:] - INFO [main:Environment@100] - Client environment:zookeeper.version=3.4.5-1392090, built on 09/30/2012 17:52 GMT
2014-02-12 07:32:21,786 [myid:] - INFO [main:Environment@100] - Client environment:host.name=hadoop103
2014-02-12 07:32:21,788 [myid:] - INFO [main:Environment@100] - Client environment:java.version=1.7.0_45
2014-02-12 07:32:21,789 [myid:] - INFO [main:Environment@100] - Client environment:java.vendor=Oracle Corporation
2014-02-12 07:32:21,789 [myid:] - INFO [main:Environment@100] - Client environment:java.home=/usr/local/jdk/jre
2014-02-12 07:32:21,790 [myid:] - INFO [main:Environment@100] - Client environment:java.class.path=/usr/local/zookeeper/bin/../build/classes:/usr/local/zookeeper/bin/../build/lib/*.jar:/usr/local/zookeeper/bin/../lib/slf4j-log4j12-1.6.1.jar:/usr/local/zookeeper/bin/../lib/slf4j-api-1.6.1.jar:/usr/local/zookeeper/bin/../lib/netty-3.2.2.Final.jar:/usr/local/zookeeper/bin/../lib/log4j-1.2.15.jar:/usr/local/zookeeper/bin/../lib/jline-0.9.94.jar:/usr/local/zookeeper/bin/../zookeeper-3.4.5.jar:/usr/local/zookeeper/bin/../src/java/lib/*.jar:/usr/local/zookeeper/bin/../conf:/usr/local/hadoop
2014-02-12 07:32:21,791 [myid:] - INFO [main:Environment@100] - Client environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
2014-02-12 07:32:21,792 [myid:] - INFO [main:Environment@100] - Client environment:java.io.tmpdir=/tmp
2014-02-12 07:32:21,793 [myid:] - INFO [main:Environment@100] - Client environment:java.compiler=<NA>
2014-02-12 07:32:21,793 [myid:] - INFO [main:Environment@100] - Client environment:os.name=Linux
2014-02-12 07:32:21,794 [myid:] - INFO [main:Environment@100] - Client environment:os.arch=amd64
2014-02-12 07:32:21,794 [myid:] - INFO [main:Environment@100] - Client environment:os.version=2.6.32-431.el6.x86_64
2014-02-12 07:32:21,795 [myid:] - INFO [main:Environment@100] - Client environment:user.name=root
2014-02-12 07:32:21,796 [myid:] - INFO [main:Environment@100] - Client environment:user.home=/root
2014-02-12 07:32:21,796 [myid:] - INFO [main:Environment@100] - Client environment:user.dir=/usr/local/hadoop
2014-02-12 07:32:21,801 [myid:] - INFO [main:ZooKeeper@438] - Initiating client connection, connectString=localhost:2181 sessionTimeout=30000 watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@10636a7e
Welcome to ZooKeeper!
2014-02-12 07:32:21,850 [myid:] - INFO [main-SendThread(127.0.0.1:2181):ClientCnxn$SendThread@966] - Opening socket connection to server 127.0.0.1/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
JLine support is enabled
2014-02-12 07:32:21,868 [myid:] - INFO [main-SendThread(127.0.0.1:2181):ClientCnxn$SendThread@849] - Socket connection established to 127.0.0.1/127.0.0.1:2181, initiating session
2014-02-12 07:32:21,906 [myid:] - INFO [main-SendThread(127.0.0.1:2181):ClientCnxn$SendThread@1207] - Session establishment complete on server 127.0.0.1/127.0.0.1:2181, sessionid = 0x6744234039810002, negotiated timeout = 30000
WATCHER::
WatchedEvent state:SyncConnected type:None path:null
[zk: localhost:2181(CONNECTED) 0] ls /
[hadoop-ha, zookeeper]
[zk: localhost:2181(CONNECTED) 1] ls /hadoop-ha
[cluster2, cluster1]
[zk: localhost:2181(CONNECTED) 2]
【集群c2也格式化，产生一个新的ZK节点cluster2】
在hadoop101、hadoop102、hadoop103上分别执行命令：/usr/local/hadoop/sbin/hadoop-daemon.sh start journalnode
命令输出(以hadoop101为例)：
[root@hadoop101 hadoop]# /usr/local/hadoop/sbin/hadoop-daemon.sh start journalnode
starting journalnode, logging to /usr/local/hadoop/logs/hadoop-root-journalnode-hadoop101.out
[root@hadoop101 hadoop]#
在每个节点执行完启动命令后，每个节点都执行以下验证。
验证(以hadoop101为例)：
[root@hadoop101 hadoop]# jps
23396 JournalNode
23598 Jps
22491 QuorumPeerMain
[root@hadoop101 hadoop]#
【产生一个java进程JournalNode】
查看一下目录结构
[root@hadoop101 hadoop]# jps
23396 JournalNode
22491 QuorumPeerMain
23445 Jps
[root@hadoop101 hadoop]# pwd
/usr/local/hadoop
[root@hadoop101 hadoop]# ls tmp/
journal
[root@hadoop101 hadoop]#
【启动JournalNode后，会在本地磁盘产生一个目录，用户保存NameNode的edits文件的数据】
从hadoop101和hadoop102中任选一个即可，这里选择的是hadoop101
在hadoop101执行以下命令：/usr/local/hadoop/bin/hdfs namenode -format -clusterId c1
命令输出：
[root@hadoop101 hadoop]# /usr/local/hadoop/bin/hdfs namenode -format -clusterId c1
14/02/12 08:07:59 INFO namenode.NameNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting NameNode
STARTUP_MSG: host = hadoop101/192.168.80.101
STARTUP_MSG: args = [-format, -clusterId, c1]
STARTUP_MSG: version = 2.2.0
STARTUP_MSG: classpath = /usr/local/hadoop/etc/hadoop:/usr/local/hadoop/share/hadoop/common/lib/protobuf-java-2.5.0.jar:/usr/local/hadoop/share/hadoop/common/lib/snappy-java-1.0.4.1.jar:/usr/local/hadoop/share/hadoop/common/lib/jsch-0.1.42.jar:/usr/local/hadoop/share/hadoop/common/lib/jersey-server-1.9.jar:/usr/local/hadoop/share/hadoop/common/lib/slf4j-log4j12-1.7.5.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-digester-1.8.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-cli-1.2.jar:/usr/local/hadoop/share/hadoop/common/lib/jackson-core-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-el-1.0.jar:/usr/local/hadoop/share/hadoop/common/lib/jets3t-0.6.1.jar:/usr/local/hadoop/share/hadoop/common/lib/jersey-core-1.9.jar:/usr/local/hadoop/share/hadoop/common/lib/slf4j-api-1.7.5.jar:/usr/local/hadoop/share/hadoop/common/lib/xz-1.0.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-lang-2.5.jar:/usr/local/hadoop/share/hadoop/common/lib/jasper-runtime-5.5.23.jar:/usr/local/hadoop/share/hadoop/common/lib/jackson-xc-1.8.8.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-codec-1.4.jar:/usr/local/hadoop/share/hadoop/common/lib/activation-1.1.jar:/usr/local/hadoop/share/hadoop/common/lib/avro-1.7.4.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-httpclient-3.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-beanutils-1.7.0.jar:/usr/local/hadoop/share/hadoop/common/lib/hadoop-annotations-2.2.0.jar:/usr/local/hadoop/share/hadoop/common/lib/jsp-api-2.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-compress-1.4.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-beanutils-core-1.8.0.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-configuration-1.6.jar:/usr/local/hadoop/share/hadoop/common/lib/jaxb-impl-2.2.3-1.jar:/usr/local/hadoop/share/hadoop/common/lib/zookeeper-3.4.5.jar:/usr/local/hadoop/share/hadoop/common/lib/hadoop-auth-2.2.0.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-io-2.1.jar:/usr/local/hadoop/share/hadoop/common/lib/netty-3.6.2.Final.jar:/usr/local/hadoop/share/hadoop/common/lib/stax-api-1.0.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-collections-3.2.1.jar:/usr/local/hadoop/share/hadoop/common/lib/servlet-api-2.5.jar:/usr/local/hadoop/share/hadoop/common/lib/junit-4.8.2.jar:/usr/local/hadoop/share/hadoop/common/lib/jetty-util-6.1.26.jar:/usr/local/hadoop/share/hadoop/common/lib/jackson-mapper-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/common/lib/jsr305-1.3.9.jar:/usr/local/hadoop/share/hadoop/common/lib/mockito-all-1.8.5.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-logging-1.1.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-math-2.1.jar:/usr/local/hadoop/share/hadoop/common/lib/jaxb-api-2.2.2.jar:/usr/local/hadoop/share/hadoop/common/lib/jersey-json-1.9.jar:/usr/local/hadoop/share/hadoop/common/lib/asm-3.2.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-net-3.1.jar:/usr/local/hadoop/share/hadoop/common/lib/jetty-6.1.26.jar:/usr/local/hadoop/share/hadoop/common/lib/jasper-compiler-5.5.23.jar:/usr/local/hadoop/share/hadoop/common/lib/guava-11.0.2.jar:/usr/local/hadoop/share/hadoop/common/lib/xmlenc-0.52.jar:/usr/local/hadoop/share/hadoop/common/lib/log4j-1.2.17.jar:/usr/local/hadoop/share/hadoop/common/lib/paranamer-2.3.jar:/usr/local/hadoop/share/hadoop/common/lib/jackson-jaxrs-1.8.8.jar:/usr/local/hadoop/share/hadoop/common/lib/jettison-1.1.jar:/usr/local/hadoop/share/hadoop/common/hadoop-common-2.2.0-tests.jar:/usr/local/hadoop/share/hadoop/common/hadoop-common-2.2.0.jar:/usr/local/hadoop/share/hadoop/common/hadoop-nfs-2.2.0.jar:/usr/local/hadoop/share/hadoop/hdfs:/usr/local/hadoop/share/hadoop/hdfs/lib/protobuf-java-2.5.0.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jersey-server-1.9.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-cli-1.2.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jackson-core-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-el-1.0.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jersey-core-1.9.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-daemon-1.0.13.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-lang-2.5.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jasper-runtime-5.5.23.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-codec-1.4.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jsp-api-2.1.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-io-2.1.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/netty-3.6.2.Final.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/servlet-api-2.5.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jetty-util-6.1.26.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jackson-mapper-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jsr305-1.3.9.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-logging-1.1.1.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/asm-3.2.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jetty-6.1.26.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/guava-11.0.2.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/xmlenc-0.52.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/log4j-1.2.17.jar:/usr/local/hadoop/share/hadoop/hdfs/hadoop-hdfs-nfs-2.2.0.jar:/usr/local/hadoop/share/hadoop/hdfs/hadoop-hdfs-2.2.0-tests.jar:/usr/local/hadoop/share/hadoop/hdfs/hadoop-hdfs-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/protobuf-java-2.5.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/snappy-java-1.0.4.1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jersey-server-1.9.jar:/usr/local/hadoop/share/hadoop/yarn/lib/guice-3.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jackson-core-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jersey-core-1.9.jar:/usr/local/hadoop/share/hadoop/yarn/lib/xz-1.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/hamcrest-core-1.1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/avro-1.7.4.jar:/usr/local/hadoop/share/hadoop/yarn/lib/aopalliance-1.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/hadoop-annotations-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/commons-compress-1.4.1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/javax.inject-1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/guice-servlet-3.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/commons-io-2.1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/netty-3.6.2.Final.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jackson-mapper-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/yarn/lib/asm-3.2.jar:/usr/local/hadoop/share/hadoop/yarn/lib/junit-4.10.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jersey-guice-1.9.jar:/usr/local/hadoop/share/hadoop/yarn/lib/log4j-1.2.17.jar:/usr/local/hadoop/share/hadoop/yarn/lib/paranamer-2.3.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-api-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-tests-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-site-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-client-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-nodemanager-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-applications-distributedshell-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-resourcemanager-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-web-proxy-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-applications-unmanaged-am-launcher-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-common-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-common-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/protobuf-java-2.5.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/snappy-java-1.0.4.1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jersey-server-1.9.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/guice-3.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jackson-core-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jersey-core-1.9.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/xz-1.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/hamcrest-core-1.1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/avro-1.7.4.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/aopalliance-1.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/hadoop-annotations-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/commons-compress-1.4.1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/javax.inject-1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/guice-servlet-3.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/commons-io-2.1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/netty-3.6.2.Final.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jackson-mapper-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/asm-3.2.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/junit-4.10.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jersey-guice-1.9.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/log4j-1.2.17.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/paranamer-2.3.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-hs-plugins-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.2.0-tests.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-app-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-core-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-shuffle-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-hs-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-common-2.2.0.jar:/contrib/capacity-scheduler/*.jar
STARTUP_MSG: build = Unknown -r Unknown; compiled by 'root' on 2013-12-26T08:50Z
STARTUP_MSG: java = 1.7.0_45
************************************************************/
14/02/12 08:07:59 INFO namenode.NameNode: registered UNIX signal handlers for [TERM, HUP, INT]
Formatting using clusterid: c1
14/02/12 08:08:01 INFO namenode.HostFileManager: read includes:
HostSet(
)
14/02/12 08:08:01 INFO namenode.HostFileManager: read excludes:
HostSet(
)
14/02/12 08:08:01 INFO blockmanagement.DatanodeManager: dfs.block.invalidate.limit=1000
14/02/12 08:08:01 INFO util.GSet: Computing capacity for map BlocksMap
14/02/12 08:08:01 INFO util.GSet: VM type = 64-bit
14/02/12 08:08:01 INFO util.GSet: 2.0% max memory = 966.7 MB
14/02/12 08:08:01 INFO util.GSet: capacity = 2^21 = 2097152 entries
14/02/12 08:08:01 INFO blockmanagement.BlockManager: dfs.block.access.token.enable=false
14/02/12 08:08:01 INFO blockmanagement.BlockManager: defaultReplication = 2
14/02/12 08:08:01 INFO blockmanagement.BlockManager: maxReplication = 512
14/02/12 08:08:01 INFO blockmanagement.BlockManager: minReplication = 1
14/02/12 08:08:01 INFO blockmanagement.BlockManager: maxReplicationStreams = 2
14/02/12 08:08:01 INFO blockmanagement.BlockManager: shouldCheckForEnoughRacks = false
14/02/12 08:08:01 INFO blockmanagement.BlockManager: replicationRecheckInterval = 3000
14/02/12 08:08:01 INFO blockmanagement.BlockManager: encryptDataTransfer = false
14/02/12 08:08:01 INFO namenode.FSNamesystem: fsOwner = root (auth:SIMPLE)
14/02/12 08:08:01 INFO namenode.FSNamesystem: supergroup = supergroup
14/02/12 08:08:01 INFO namenode.FSNamesystem: isPermissionEnabled = true
14/02/12 08:08:01 INFO namenode.FSNamesystem: Determined nameservice ID: cluster1
14/02/12 08:08:01 INFO namenode.FSNamesystem: HA Enabled: true
14/02/12 08:08:01 INFO namenode.FSNamesystem: Append Enabled: true
14/02/12 08:08:01 INFO util.GSet: Computing capacity for map INodeMap
14/02/12 08:08:01 INFO util.GSet: VM type = 64-bit
14/02/12 08:08:01 INFO util.GSet: 1.0% max memory = 966.7 MB
14/02/12 08:08:01 INFO util.GSet: capacity = 2^20 = 1048576 entries
14/02/12 08:08:01 INFO namenode.NameNode: Caching file names occuring more than 10 times
14/02/12 08:08:01 INFO namenode.FSNamesystem: dfs.namenode.safemode.threshold-pct = 0.9990000128746033
14/02/12 08:08:01 INFO namenode.FSNamesystem: dfs.namenode.safemode.min.datanodes = 0
14/02/12 08:08:01 INFO namenode.FSNamesystem: dfs.namenode.safemode.extension = 30000
14/02/12 08:08:01 INFO namenode.FSNamesystem: Retry cache on namenode is enabled
14/02/12 08:08:01 INFO namenode.FSNamesystem: Retry cache will use 0.03 of total heap and retry cache entry expiry time is 600000 millis
14/02/12 08:08:01 INFO util.GSet: Computing capacity for map Namenode Retry Cache
14/02/12 08:08:01 INFO util.GSet: VM type = 64-bit
14/02/12 08:08:01 INFO util.GSet: 0.029999999329447746% max memory = 966.7 MB
14/02/12 08:08:01 INFO util.GSet: capacity = 2^15 = 32768 entries
14/02/12 08:08:03 INFO common.Storage: Storage directory /usr/local/hadoop/tmp/dfs/name has been successfully formatted.
14/02/12 08:08:04 INFO namenode.FSImage: Saving image file /usr/local/hadoop/tmp/dfs/name/current/fsimage.ckpt_0000000000000000000 using no compression
14/02/12 08:08:04 INFO namenode.FSImage: Image file /usr/local/hadoop/tmp/dfs/name/current/fsimage.ckpt_0000000000000000000 of size 196 bytes saved in 0 seconds.
14/02/12 08:08:04 INFO namenode.NNStorageRetentionManager: Going to retain 1 images with txid >= 0
14/02/12 08:08:04 INFO util.ExitUtil: Exiting with status 0
14/02/12 08:08:04 INFO namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at hadoop101/192.168.80.101
************************************************************/
[root@hadoop101 hadoop]#
验证：
[root@hadoop101 hadoop]# ls tmp/
dfs journal
[root@hadoop101 hadoop]# ls tmp/dfs/
name
【格式化NameNode会在磁盘产生一个目录，用于保存NameNode的fsimage、edits等文件】
在hadoop101上执行命令：/usr/local/hadoop/sbin/hadoop-daemon.sh start namenode
命令输出：
[root@hadoop101 hadoop]# /usr/local/hadoop/sbin/hadoop-daemon.sh start namenode
starting namenode, logging to /usr/local/hadoop/logs/hadoop-root-namenode-hadoop101.out
验证：
[root@hadoop101 hadoop]# jps
23396 JournalNode
23598 Jps
23558 NameNode
22491 QuorumPeerMain
[root@hadoop101 hadoop]#
【启动后，产生一个新的java进程NameNode】
通过浏览器访问，也可以看到下图所示
在hadoop102上执行命令：/usr/local/hadoop/bin/hdfs namenode –bootstrapStandby
命令输出：
[root@hadoop102 hadoop]# /usr/local/hadoop/bin/hdfs namenode -bootstrapStandby
14/02/12 08:17:44 INFO namenode.NameNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting NameNode
STARTUP_MSG: host = hadoop102/192.168.80.102
STARTUP_MSG: args = [-bootstrapStandby]
STARTUP_MSG: version = 2.2.0
STARTUP_MSG: classpath = /usr/local/hadoop/etc/hadoop:/usr/local/hadoop/share/hadoop/common/lib/protobuf-java-2.5.0.jar:/usr/local/hadoop/share/hadoop/common/lib/snappy-java-1.0.4.1.jar:/usr/local/hadoop/share/hadoop/common/lib/jsch-0.1.42.jar:/usr/local/hadoop/share/hadoop/common/lib/jersey-server-1.9.jar:/usr/local/hadoop/share/hadoop/common/lib/slf4j-log4j12-1.7.5.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-digester-1.8.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-cli-1.2.jar:/usr/local/hadoop/share/hadoop/common/lib/jackson-core-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-el-1.0.jar:/usr/local/hadoop/share/hadoop/common/lib/jets3t-0.6.1.jar:/usr/local/hadoop/share/hadoop/common/lib/jersey-core-1.9.jar:/usr/local/hadoop/share/hadoop/common/lib/slf4j-api-1.7.5.jar:/usr/local/hadoop/share/hadoop/common/lib/xz-1.0.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-lang-2.5.jar:/usr/local/hadoop/share/hadoop/common/lib/jasper-runtime-5.5.23.jar:/usr/local/hadoop/share/hadoop/common/lib/jackson-xc-1.8.8.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-codec-1.4.jar:/usr/local/hadoop/share/hadoop/common/lib/activation-1.1.jar:/usr/local/hadoop/share/hadoop/common/lib/avro-1.7.4.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-httpclient-3.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-beanutils-1.7.0.jar:/usr/local/hadoop/share/hadoop/common/lib/hadoop-annotations-2.2.0.jar:/usr/local/hadoop/share/hadoop/common/lib/jsp-api-2.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-compress-1.4.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-beanutils-core-1.8.0.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-configuration-1.6.jar:/usr/local/hadoop/share/hadoop/common/lib/jaxb-impl-2.2.3-1.jar:/usr/local/hadoop/share/hadoop/common/lib/zookeeper-3.4.5.jar:/usr/local/hadoop/share/hadoop/common/lib/hadoop-auth-2.2.0.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-io-2.1.jar:/usr/local/hadoop/share/hadoop/common/lib/netty-3.6.2.Final.jar:/usr/local/hadoop/share/hadoop/common/lib/stax-api-1.0.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-collections-3.2.1.jar:/usr/local/hadoop/share/hadoop/common/lib/servlet-api-2.5.jar:/usr/local/hadoop/share/hadoop/common/lib/junit-4.8.2.jar:/usr/local/hadoop/share/hadoop/common/lib/jetty-util-6.1.26.jar:/usr/local/hadoop/share/hadoop/common/lib/jackson-mapper-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/common/lib/jsr305-1.3.9.jar:/usr/local/hadoop/share/hadoop/common/lib/mockito-all-1.8.5.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-logging-1.1.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-math-2.1.jar:/usr/local/hadoop/share/hadoop/common/lib/jaxb-api-2.2.2.jar:/usr/local/hadoop/share/hadoop/common/lib/jersey-json-1.9.jar:/usr/local/hadoop/share/hadoop/common/lib/asm-3.2.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-net-3.1.jar:/usr/local/hadoop/share/hadoop/common/lib/jetty-6.1.26.jar:/usr/local/hadoop/share/hadoop/common/lib/jasper-compiler-5.5.23.jar:/usr/local/hadoop/share/hadoop/common/lib/guava-11.0.2.jar:/usr/local/hadoop/share/hadoop/common/lib/xmlenc-0.52.jar:/usr/local/hadoop/share/hadoop/common/lib/log4j-1.2.17.jar:/usr/local/hadoop/share/hadoop/common/lib/paranamer-2.3.jar:/usr/local/hadoop/share/hadoop/common/lib/jackson-jaxrs-1.8.8.jar:/usr/local/hadoop/share/hadoop/common/lib/jettison-1.1.jar:/usr/local/hadoop/share/hadoop/common/hadoop-common-2.2.0-tests.jar:/usr/local/hadoop/share/hadoop/common/hadoop-common-2.2.0.jar:/usr/local/hadoop/share/hadoop/common/hadoop-nfs-2.2.0.jar:/usr/local/hadoop/share/hadoop/hdfs:/usr/local/hadoop/share/hadoop/hdfs/lib/protobuf-java-2.5.0.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jersey-server-1.9.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-cli-1.2.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jackson-core-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-el-1.0.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jersey-core-1.9.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-daemon-1.0.13.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-lang-2.5.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jasper-runtime-5.5.23.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-codec-1.4.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jsp-api-2.1.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-io-2.1.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/netty-3.6.2.Final.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/servlet-api-2.5.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jetty-util-6.1.26.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jackson-mapper-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jsr305-1.3.9.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-logging-1.1.1.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/asm-3.2.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jetty-6.1.26.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/guava-11.0.2.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/xmlenc-0.52.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/log4j-1.2.17.jar:/usr/local/hadoop/share/hadoop/hdfs/hadoop-hdfs-nfs-2.2.0.jar:/usr/local/hadoop/share/hadoop/hdfs/hadoop-hdfs-2.2.0-tests.jar:/usr/local/hadoop/share/hadoop/hdfs/hadoop-hdfs-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/protobuf-java-2.5.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/snappy-java-1.0.4.1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jersey-server-1.9.jar:/usr/local/hadoop/share/hadoop/yarn/lib/guice-3.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jackson-core-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jersey-core-1.9.jar:/usr/local/hadoop/share/hadoop/yarn/lib/xz-1.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/hamcrest-core-1.1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/avro-1.7.4.jar:/usr/local/hadoop/share/hadoop/yarn/lib/aopalliance-1.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/hadoop-annotations-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/commons-compress-1.4.1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/javax.inject-1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/guice-servlet-3.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/commons-io-2.1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/netty-3.6.2.Final.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jackson-mapper-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/yarn/lib/asm-3.2.jar:/usr/local/hadoop/share/hadoop/yarn/lib/junit-4.10.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jersey-guice-1.9.jar:/usr/local/hadoop/share/hadoop/yarn/lib/log4j-1.2.17.jar:/usr/local/hadoop/share/hadoop/yarn/lib/paranamer-2.3.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-api-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-tests-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-site-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-client-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-nodemanager-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-applications-distributedshell-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-resourcemanager-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-web-proxy-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-applications-unmanaged-am-launcher-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-common-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-common-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/protobuf-java-2.5.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/snappy-java-1.0.4.1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jersey-server-1.9.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/guice-3.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jackson-core-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jersey-core-1.9.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/xz-1.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/hamcrest-core-1.1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/avro-1.7.4.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/aopalliance-1.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/hadoop-annotations-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/commons-compress-1.4.1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/javax.inject-1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/guice-servlet-3.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/commons-io-2.1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/netty-3.6.2.Final.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jackson-mapper-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/asm-3.2.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/junit-4.10.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jersey-guice-1.9.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/log4j-1.2.17.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/paranamer-2.3.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-hs-plugins-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.2.0-tests.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-app-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-core-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-shuffle-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-hs-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-common-2.2.0.jar:/usr/local/hadoop/contrib/capacity-scheduler/*.jar
STARTUP_MSG: build = Unknown -r Unknown; compiled by 'root' on 2013-12-26T08:50Z
STARTUP_MSG: java = 1.7.0_45
************************************************************/
14/02/12 08:17:44 INFO namenode.NameNode: registered UNIX signal handlers for [TERM, HUP, INT]
=====================================================
About to bootstrap Standby ID hadoop102 from:
Nameservice ID: cluster1
Other Namenode ID: hadoop101
Other NN's HTTP address: hadoop101:50070
Other NN's IPC address: hadoop101/192.168.80.101:9000
Namespace ID: 1496717450
Block pool ID: BP-2022554027-192.168.80.101-1392164061887
Cluster ID: c1
Layout version: -47
=====================================================
14/02/12 08:17:48 INFO common.Storage: Storage directory /usr/local/hadoop/tmp/dfs/name has been successfully formatted.
14/02/12 08:17:48 INFO namenode.TransferFsImage: Opening connection to http://hadoop101:50070/getimage?getimage=1&txid=0&storageInfo=-47:1496717450:0:c1
14/02/12 08:17:48 INFO namenode.TransferFsImage: Transfer took 0.18s at 0.00 KB/s
14/02/12 08:17:48 INFO namenode.TransferFsImage: Downloaded file fsimage.ckpt_0000000000000000000 size 196 bytes.
14/02/12 08:17:48 INFO util.ExitUtil: Exiting with status 0
14/02/12 08:17:48 INFO namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at hadoop102/192.168.80.102
************************************************************/
[root@hadoop102 hadoop]#
验证：
[root@hadoop102 hadoop]# ls tmp/
dfs journal
[root@hadoop102 hadoop]# ls tmp/dfs/
name
[root@hadoop102 hadoop]#
【在tmp目录下产生一个目录name】
在hadoop102上执行命令：/usr/local/hadoop/sbin/hadoop-daemon.sh start namenode
命令输出：
[root@hadoop102 hadoop]# /usr/local/hadoop/sbin/hadoop-daemon.sh start namenode
starting namenode, logging to /usr/local/hadoop/logs/hadoop-root-namenode-hadoop102.out
验证：
[root@hadoop102 hadoop]# jps
12355 JournalNode
12611 Jps
12573 NameNode
12081 QuorumPeerMain
[root@hadoop102 hadoop]#
【产生java进程NameNode】
通过浏览器访问，也可以看到下图所示
从hadoop103和hadoop104中任选一个即可，这里选择的是hadoop103
在hadoop103执行以下命令：/usr/local/hadoop/bin/hdfs namenode -format -clusterId c2
命令输出：
[root@hadoop103 hadoop]# /usr/local/hadoop/bin/hdfs namenode -format -clusterId c2
14/02/12 08:23:28 INFO namenode.NameNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting NameNode
STARTUP_MSG: host = hadoop103/192.168.80.103
STARTUP_MSG: args = [-format, -clusterId, c2]
STARTUP_MSG: version = 2.2.0
STARTUP_MSG: classpath = /usr/local/hadoop/etc/hadoop:/usr/local/hadoop/share/hadoop/common/lib/protobuf-java-2.5.0.jar:/usr/local/hadoop/share/hadoop/common/lib/snappy-java-1.0.4.1.jar:/usr/local/hadoop/share/hadoop/common/lib/jsch-0.1.42.jar:/usr/local/hadoop/share/hadoop/common/lib/jersey-server-1.9.jar:/usr/local/hadoop/share/hadoop/common/lib/slf4j-log4j12-1.7.5.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-digester-1.8.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-cli-1.2.jar:/usr/local/hadoop/share/hadoop/common/lib/jackson-core-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-el-1.0.jar:/usr/local/hadoop/share/hadoop/common/lib/jets3t-0.6.1.jar:/usr/local/hadoop/share/hadoop/common/lib/jersey-core-1.9.jar:/usr/local/hadoop/share/hadoop/common/lib/slf4j-api-1.7.5.jar:/usr/local/hadoop/share/hadoop/common/lib/xz-1.0.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-lang-2.5.jar:/usr/local/hadoop/share/hadoop/common/lib/jasper-runtime-5.5.23.jar:/usr/local/hadoop/share/hadoop/common/lib/jackson-xc-1.8.8.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-codec-1.4.jar:/usr/local/hadoop/share/hadoop/common/lib/activation-1.1.jar:/usr/local/hadoop/share/hadoop/common/lib/avro-1.7.4.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-httpclient-3.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-beanutils-1.7.0.jar:/usr/local/hadoop/share/hadoop/common/lib/hadoop-annotations-2.2.0.jar:/usr/local/hadoop/share/hadoop/common/lib/jsp-api-2.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-compress-1.4.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-beanutils-core-1.8.0.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-configuration-1.6.jar:/usr/local/hadoop/share/hadoop/common/lib/jaxb-impl-2.2.3-1.jar:/usr/local/hadoop/share/hadoop/common/lib/zookeeper-3.4.5.jar:/usr/local/hadoop/share/hadoop/common/lib/hadoop-auth-2.2.0.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-io-2.1.jar:/usr/local/hadoop/share/hadoop/common/lib/netty-3.6.2.Final.jar:/usr/local/hadoop/share/hadoop/common/lib/stax-api-1.0.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-collections-3.2.1.jar:/usr/local/hadoop/share/hadoop/common/lib/servlet-api-2.5.jar:/usr/local/hadoop/share/hadoop/common/lib/junit-4.8.2.jar:/usr/local/hadoop/share/hadoop/common/lib/jetty-util-6.1.26.jar:/usr/local/hadoop/share/hadoop/common/lib/jackson-mapper-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/common/lib/jsr305-1.3.9.jar:/usr/local/hadoop/share/hadoop/common/lib/mockito-all-1.8.5.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-logging-1.1.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-math-2.1.jar:/usr/local/hadoop/share/hadoop/common/lib/jaxb-api-2.2.2.jar:/usr/local/hadoop/share/hadoop/common/lib/jersey-json-1.9.jar:/usr/local/hadoop/share/hadoop/common/lib/asm-3.2.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-net-3.1.jar:/usr/local/hadoop/share/hadoop/common/lib/jetty-6.1.26.jar:/usr/local/hadoop/share/hadoop/common/lib/jasper-compiler-5.5.23.jar:/usr/local/hadoop/share/hadoop/common/lib/guava-11.0.2.jar:/usr/local/hadoop/share/hadoop/common/lib/xmlenc-0.52.jar:/usr/local/hadoop/share/hadoop/common/lib/log4j-1.2.17.jar:/usr/local/hadoop/share/hadoop/common/lib/paranamer-2.3.jar:/usr/local/hadoop/share/hadoop/common/lib/jackson-jaxrs-1.8.8.jar:/usr/local/hadoop/share/hadoop/common/lib/jettison-1.1.jar:/usr/local/hadoop/share/hadoop/common/hadoop-common-2.2.0-tests.jar:/usr/local/hadoop/share/hadoop/common/hadoop-common-2.2.0.jar:/usr/local/hadoop/share/hadoop/common/hadoop-nfs-2.2.0.jar:/usr/local/hadoop/share/hadoop/hdfs:/usr/local/hadoop/share/hadoop/hdfs/lib/protobuf-java-2.5.0.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jersey-server-1.9.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-cli-1.2.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jackson-core-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-el-1.0.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jersey-core-1.9.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-daemon-1.0.13.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-lang-2.5.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jasper-runtime-5.5.23.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-codec-1.4.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jsp-api-2.1.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-io-2.1.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/netty-3.6.2.Final.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/servlet-api-2.5.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jetty-util-6.1.26.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jackson-mapper-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jsr305-1.3.9.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-logging-1.1.1.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/asm-3.2.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jetty-6.1.26.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/guava-11.0.2.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/xmlenc-0.52.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/log4j-1.2.17.jar:/usr/local/hadoop/share/hadoop/hdfs/hadoop-hdfs-nfs-2.2.0.jar:/usr/local/hadoop/share/hadoop/hdfs/hadoop-hdfs-2.2.0-tests.jar:/usr/local/hadoop/share/hadoop/hdfs/hadoop-hdfs-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/protobuf-java-2.5.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/snappy-java-1.0.4.1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jersey-server-1.9.jar:/usr/local/hadoop/share/hadoop/yarn/lib/guice-3.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jackson-core-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jersey-core-1.9.jar:/usr/local/hadoop/share/hadoop/yarn/lib/xz-1.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/hamcrest-core-1.1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/avro-1.7.4.jar:/usr/local/hadoop/share/hadoop/yarn/lib/aopalliance-1.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/hadoop-annotations-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/commons-compress-1.4.1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/javax.inject-1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/guice-servlet-3.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/commons-io-2.1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/netty-3.6.2.Final.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jackson-mapper-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/yarn/lib/asm-3.2.jar:/usr/local/hadoop/share/hadoop/yarn/lib/junit-4.10.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jersey-guice-1.9.jar:/usr/local/hadoop/share/hadoop/yarn/lib/log4j-1.2.17.jar:/usr/local/hadoop/share/hadoop/yarn/lib/paranamer-2.3.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-api-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-tests-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-site-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-client-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-nodemanager-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-applications-distributedshell-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-resourcemanager-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-web-proxy-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-applications-unmanaged-am-launcher-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-common-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-common-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/protobuf-java-2.5.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/snappy-java-1.0.4.1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jersey-server-1.9.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/guice-3.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jackson-core-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jersey-core-1.9.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/xz-1.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/hamcrest-core-1.1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/avro-1.7.4.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/aopalliance-1.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/hadoop-annotations-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/commons-compress-1.4.1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/javax.inject-1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/guice-servlet-3.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/commons-io-2.1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/netty-3.6.2.Final.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jackson-mapper-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/asm-3.2.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/junit-4.10.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jersey-guice-1.9.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/log4j-1.2.17.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/paranamer-2.3.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-hs-plugins-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.2.0-tests.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-app-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-core-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-shuffle-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-hs-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-common-2.2.0.jar:/usr/local/hadoop/contrib/capacity-scheduler/*.jar
STARTUP_MSG: build = Unknown -r Unknown; compiled by 'root' on 2013-12-26T08:50Z
STARTUP_MSG: java = 1.7.0_45
************************************************************/
14/02/12 08:23:28 INFO namenode.NameNode: registered UNIX signal handlers for [TERM, HUP, INT]
14/02/12 08:23:30 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Formatting using clusterid: c2
14/02/12 08:23:31 INFO namenode.HostFileManager: read includes:
HostSet(
)
14/02/12 08:23:31 INFO namenode.HostFileManager: read excludes:
HostSet(
)
14/02/12 08:23:31 INFO blockmanagement.DatanodeManager: dfs.block.invalidate.limit=1000
14/02/12 08:23:31 INFO util.GSet: Computing capacity for map BlocksMap
14/02/12 08:23:31 INFO util.GSet: VM type = 64-bit
14/02/12 08:23:31 INFO util.GSet: 2.0% max memory = 966.7 MB
14/02/12 08:23:31 INFO util.GSet: capacity = 2^21 = 2097152 entries
14/02/12 08:23:31 INFO blockmanagement.BlockManager: dfs.block.access.token.enable=false
14/02/12 08:23:31 INFO blockmanagement.BlockManager: defaultReplication = 2
14/02/12 08:23:31 INFO blockmanagement.BlockManager: maxReplication = 512
14/02/12 08:23:31 INFO blockmanagement.BlockManager: minReplication = 1
14/02/12 08:23:31 INFO blockmanagement.BlockManager: maxReplicationStreams = 2
14/02/12 08:23:31 INFO blockmanagement.BlockManager: shouldCheckForEnoughRacks = false
14/02/12 08:23:31 INFO blockmanagement.BlockManager: replicationRecheckInterval = 3000
14/02/12 08:23:31 INFO blockmanagement.BlockManager: encryptDataTransfer = false
14/02/12 08:23:31 INFO namenode.FSNamesystem: fsOwner = root (auth:SIMPLE)
14/02/12 08:23:31 INFO namenode.FSNamesystem: supergroup = supergroup
14/02/12 08:23:31 INFO namenode.FSNamesystem: isPermissionEnabled = true
14/02/12 08:23:31 INFO namenode.FSNamesystem: Determined nameservice ID: cluster2
14/02/12 08:23:31 INFO namenode.FSNamesystem: HA Enabled: true
14/02/12 08:23:31 INFO namenode.FSNamesystem: Append Enabled: true
14/02/12 08:23:31 INFO util.GSet: Computing capacity for map INodeMap
14/02/12 08:23:31 INFO util.GSet: VM type = 64-bit
14/02/12 08:23:31 INFO util.GSet: 1.0% max memory = 966.7 MB
14/02/12 08:23:31 INFO util.GSet: capacity = 2^20 = 1048576 entries
14/02/12 08:23:31 INFO namenode.NameNode: Caching file names occuring more than 10 times
14/02/12 08:23:31 INFO namenode.FSNamesystem: dfs.namenode.safemode.threshold-pct = 0.9990000128746033
14/02/12 08:23:31 INFO namenode.FSNamesystem: dfs.namenode.safemode.min.datanodes = 0
14/02/12 08:23:31 INFO namenode.FSNamesystem: dfs.namenode.safemode.extension = 30000
14/02/12 08:23:31 INFO namenode.FSNamesystem: Retry cache on namenode is enabled
14/02/12 08:23:31 INFO namenode.FSNamesystem: Retry cache will use 0.03 of total heap and retry cache entry expiry time is 600000 millis
14/02/12 08:23:31 INFO util.GSet: Computing capacity for map Namenode Retry Cache
14/02/12 08:23:31 INFO util.GSet: VM type = 64-bit
14/02/12 08:23:31 INFO util.GSet: 0.029999999329447746% max memory = 966.7 MB
14/02/12 08:23:31 INFO util.GSet: capacity = 2^15 = 32768 entries
14/02/12 08:23:33 INFO common.Storage: Storage directory /usr/local/hadoop/tmp/dfs/name has been successfully formatted.
14/02/12 08:23:33 INFO namenode.FSImage: Saving image file /usr/local/hadoop/tmp/dfs/name/current/fsimage.ckpt_0000000000000000000 using no compression
14/02/12 08:23:33 INFO namenode.FSImage: Image file /usr/local/hadoop/tmp/dfs/name/current/fsimage.ckpt_0000000000000000000 of size 196 bytes saved in 0 seconds.
14/02/12 08:23:33 INFO namenode.NNStorageRetentionManager: Going to retain 1 images with txid >= 0
14/02/12 08:23:33 INFO util.ExitUtil: Exiting with status 0
14/02/12 08:23:33 INFO namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at hadoop103/192.168.80.103
************************************************************/
[root@hadoop103 hadoop]#
【上面的输出可以看到/usr/local/hadoop/tmp/dfs/name 被成功格式化了】
验证：
[root@hadoop103 hadoop]# ls tmp/
dfs journal
[root@hadoop103 hadoop]# ls tmp/dfs/
name
[root@hadoop103 hadoop]#
在hadoop103上执行命令：/usr/local/hadoop/sbin/hadoop-daemon.sh start namenode
命令输出：
[root@hadoop103 hadoop]# /usr/local/hadoop/sbin/hadoop-daemon.sh start namenode
starting namenode, logging to /usr/local/hadoop/logs/hadoop-root-namenode-hadoop103.out
[root@hadoop103 hadoop]#
验证：
[root@hadoop103 hadoop]# jps
11290 JournalNode
11560 NameNode
10972 QuorumPeerMain
11600 Jps
[root@hadoop103 hadoop]#
也可以通过浏览器访问http://hadoop103:50070，可以看到如上图页面，此处省略截图。
在hadoop104上执行命令：/usr/local/hadoop/bin/hdfs namenode –bootstrapStandby
命令输出：
[root@hadoop104 hadoop]# /usr/local/hadoop/bin/hdfs namenode -bootstrapStandby
14/02/12 08:28:30 INFO namenode.NameNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting NameNode
STARTUP_MSG: host = hadoop104/192.168.80.104
STARTUP_MSG: args = [-bootstrapStandby]
STARTUP_MSG: version = 2.2.0
STARTUP_MSG: classpath = /usr/local/hadoop/etc/hadoop:/usr/local/hadoop/share/hadoop/common/lib/protobuf-java-2.5.0.jar:/usr/local/hadoop/share/hadoop/common/lib/snappy-java-1.0.4.1.jar:/usr/local/hadoop/share/hadoop/common/lib/jsch-0.1.42.jar:/usr/local/hadoop/share/hadoop/common/lib/jersey-server-1.9.jar:/usr/local/hadoop/share/hadoop/common/lib/slf4j-log4j12-1.7.5.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-digester-1.8.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-cli-1.2.jar:/usr/local/hadoop/share/hadoop/common/lib/jackson-core-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-el-1.0.jar:/usr/local/hadoop/share/hadoop/common/lib/jets3t-0.6.1.jar:/usr/local/hadoop/share/hadoop/common/lib/jersey-core-1.9.jar:/usr/local/hadoop/share/hadoop/common/lib/slf4j-api-1.7.5.jar:/usr/local/hadoop/share/hadoop/common/lib/xz-1.0.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-lang-2.5.jar:/usr/local/hadoop/share/hadoop/common/lib/jasper-runtime-5.5.23.jar:/usr/local/hadoop/share/hadoop/common/lib/jackson-xc-1.8.8.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-codec-1.4.jar:/usr/local/hadoop/share/hadoop/common/lib/activation-1.1.jar:/usr/local/hadoop/share/hadoop/common/lib/avro-1.7.4.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-httpclient-3.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-beanutils-1.7.0.jar:/usr/local/hadoop/share/hadoop/common/lib/hadoop-annotations-2.2.0.jar:/usr/local/hadoop/share/hadoop/common/lib/jsp-api-2.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-compress-1.4.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-beanutils-core-1.8.0.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-configuration-1.6.jar:/usr/local/hadoop/share/hadoop/common/lib/jaxb-impl-2.2.3-1.jar:/usr/local/hadoop/share/hadoop/common/lib/zookeeper-3.4.5.jar:/usr/local/hadoop/share/hadoop/common/lib/hadoop-auth-2.2.0.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-io-2.1.jar:/usr/local/hadoop/share/hadoop/common/lib/netty-3.6.2.Final.jar:/usr/local/hadoop/share/hadoop/common/lib/stax-api-1.0.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-collections-3.2.1.jar:/usr/local/hadoop/share/hadoop/common/lib/servlet-api-2.5.jar:/usr/local/hadoop/share/hadoop/common/lib/junit-4.8.2.jar:/usr/local/hadoop/share/hadoop/common/lib/jetty-util-6.1.26.jar:/usr/local/hadoop/share/hadoop/common/lib/jackson-mapper-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/common/lib/jsr305-1.3.9.jar:/usr/local/hadoop/share/hadoop/common/lib/mockito-all-1.8.5.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-logging-1.1.1.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-math-2.1.jar:/usr/local/hadoop/share/hadoop/common/lib/jaxb-api-2.2.2.jar:/usr/local/hadoop/share/hadoop/common/lib/jersey-json-1.9.jar:/usr/local/hadoop/share/hadoop/common/lib/asm-3.2.jar:/usr/local/hadoop/share/hadoop/common/lib/commons-net-3.1.jar:/usr/local/hadoop/share/hadoop/common/lib/jetty-6.1.26.jar:/usr/local/hadoop/share/hadoop/common/lib/jasper-compiler-5.5.23.jar:/usr/local/hadoop/share/hadoop/common/lib/guava-11.0.2.jar:/usr/local/hadoop/share/hadoop/common/lib/xmlenc-0.52.jar:/usr/local/hadoop/share/hadoop/common/lib/log4j-1.2.17.jar:/usr/local/hadoop/share/hadoop/common/lib/paranamer-2.3.jar:/usr/local/hadoop/share/hadoop/common/lib/jackson-jaxrs-1.8.8.jar:/usr/local/hadoop/share/hadoop/common/lib/jettison-1.1.jar:/usr/local/hadoop/share/hadoop/common/hadoop-common-2.2.0-tests.jar:/usr/local/hadoop/share/hadoop/common/hadoop-common-2.2.0.jar:/usr/local/hadoop/share/hadoop/common/hadoop-nfs-2.2.0.jar:/usr/local/hadoop/share/hadoop/hdfs:/usr/local/hadoop/share/hadoop/hdfs/lib/protobuf-java-2.5.0.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jersey-server-1.9.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-cli-1.2.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jackson-core-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-el-1.0.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jersey-core-1.9.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-daemon-1.0.13.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-lang-2.5.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jasper-runtime-5.5.23.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-codec-1.4.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jsp-api-2.1.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-io-2.1.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/netty-3.6.2.Final.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/servlet-api-2.5.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jetty-util-6.1.26.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jackson-mapper-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jsr305-1.3.9.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/commons-logging-1.1.1.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/asm-3.2.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/jetty-6.1.26.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/guava-11.0.2.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/xmlenc-0.52.jar:/usr/local/hadoop/share/hadoop/hdfs/lib/log4j-1.2.17.jar:/usr/local/hadoop/share/hadoop/hdfs/hadoop-hdfs-nfs-2.2.0.jar:/usr/local/hadoop/share/hadoop/hdfs/hadoop-hdfs-2.2.0-tests.jar:/usr/local/hadoop/share/hadoop/hdfs/hadoop-hdfs-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/protobuf-java-2.5.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/snappy-java-1.0.4.1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jersey-server-1.9.jar:/usr/local/hadoop/share/hadoop/yarn/lib/guice-3.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jackson-core-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jersey-core-1.9.jar:/usr/local/hadoop/share/hadoop/yarn/lib/xz-1.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/hamcrest-core-1.1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/avro-1.7.4.jar:/usr/local/hadoop/share/hadoop/yarn/lib/aopalliance-1.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/hadoop-annotations-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/commons-compress-1.4.1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/javax.inject-1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/guice-servlet-3.0.jar:/usr/local/hadoop/share/hadoop/yarn/lib/commons-io-2.1.jar:/usr/local/hadoop/share/hadoop/yarn/lib/netty-3.6.2.Final.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jackson-mapper-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/yarn/lib/asm-3.2.jar:/usr/local/hadoop/share/hadoop/yarn/lib/junit-4.10.jar:/usr/local/hadoop/share/hadoop/yarn/lib/jersey-guice-1.9.jar:/usr/local/hadoop/share/hadoop/yarn/lib/log4j-1.2.17.jar:/usr/local/hadoop/share/hadoop/yarn/lib/paranamer-2.3.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-api-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-tests-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-site-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-client-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-nodemanager-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-applications-distributedshell-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-resourcemanager-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-web-proxy-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-applications-unmanaged-am-launcher-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-server-common-2.2.0.jar:/usr/local/hadoop/share/hadoop/yarn/hadoop-yarn-common-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/protobuf-java-2.5.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/snappy-java-1.0.4.1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jersey-server-1.9.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/guice-3.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jackson-core-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jersey-core-1.9.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/xz-1.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/hamcrest-core-1.1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/avro-1.7.4.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/aopalliance-1.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/hadoop-annotations-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/commons-compress-1.4.1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/javax.inject-1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/guice-servlet-3.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/commons-io-2.1.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/netty-3.6.2.Final.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jackson-mapper-asl-1.8.8.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/asm-3.2.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/junit-4.10.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/jersey-guice-1.9.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/log4j-1.2.17.jar:/usr/local/hadoop/share/hadoop/mapreduce/lib/paranamer-2.3.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-hs-plugins-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.2.0-tests.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-app-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-core-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-shuffle-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-hs-2.2.0.jar:/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-client-common-2.2.0.jar:/usr/local/hadoop/contrib/capacity-scheduler/*.jar
STARTUP_MSG: build = Unknown -r Unknown; compiled by 'root' on 2013-12-26T08:50Z
STARTUP_MSG: java = 1.7.0_45
************************************************************/
14/02/12 08:28:35 INFO namenode.NameNode: registered UNIX signal handlers for [TERM, HUP, INT]
=====================================================
About to bootstrap Standby ID hadoop104 from:
Nameservice ID: cluster2
Other Namenode ID: hadoop103
Other NN's HTTP address: hadoop103:50070
Other NN's IPC address: hadoop103/192.168.80.103:9000
Namespace ID: 698609742
Block pool ID: BP-1304582337-192.168.80.103-1392164613254
Cluster ID: c2
Layout version: -47
=====================================================
14/02/12 08:28:39 INFO common.Storage: Storage directory /usr/local/hadoop/tmp/dfs/name has been successfully formatted.
14/02/12 08:28:39 INFO namenode.TransferFsImage: Opening connection to http://hadoop103:50070/getimage?getimage=1&txid=0&storageInfo=-47:698609742:0:c2
14/02/12 08:28:40 INFO namenode.TransferFsImage: Transfer took 0.67s at 0.00 KB/s
14/02/12 08:28:40 INFO namenode.TransferFsImage: Downloaded file fsimage.ckpt_0000000000000000000 size 196 bytes.
14/02/12 08:28:40 INFO util.ExitUtil: Exiting with status 0
14/02/12 08:28:40 INFO namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at hadoop104/192.168.80.104
************************************************************/
验证：
[root@hadoop104 hadoop]# pwd
/usr/local/hadoop
[root@hadoop104 hadoop]# ls tmp/
dfs
[root@hadoop104 hadoop]# ls tmp/dfs/
name
[root@hadoop104 hadoop]#
在hadoop104上执行命令：/usr/local/hadoop/sbin/hadoop-daemon.sh start namenode
命令输出：
[root@hadoop104 hadoop]# /usr/local/hadoop/sbin/hadoop-daemon.sh start namenode
starting namenode, logging to /usr/local/hadoop/logs/hadoop-root-namenode-hadoop104.out
[root@hadoop104 hadoop]#
验证：
[root@hadoop104 hadoop]# jps
8822 NameNode
8975 Jps
[root@hadoop104 hadoop]#
也可以通过浏览器访问http://hadoop104:50070，可以看到如上图页面，此处省略截图。
在hadoop101上执行命令：/usr/local/hadoop/sbin/hadoop-daemons.sh start datanode
命令输出：
[root@hadoop101 hadoop]# /usr/local/hadoop/sbin/hadoop-daemons.sh start datanode
hadoop101: starting datanode, logging to /usr/local/hadoop/logs/hadoop-root-datanode-hadoop101.out
hadoop103: starting datanode, logging to /usr/local/hadoop/logs/hadoop-root-datanode-hadoop103.out
hadoop102: starting datanode, logging to /usr/local/hadoop/logs/hadoop-root-datanode-hadoop102.out
hadoop104: starting datanode, logging to /usr/local/hadoop/logs/hadoop-root-datanode-hadoop104.out
[root@hadoop101 hadoop]#
【上述命令会在四个节点分别启动DataNode进程】
验证（以hadoop101为例）：
[root@hadoop101 hadoop]# jps
23396 JournalNode
24302 Jps
24232 DataNode
23558 NameNode
22491 QuorumPeerMain
[root@hadoop101 hadoop]#
【可以看到java进程DataNode】
在hadoop101上执行命令：/usr/local/hadoop/sbin/start-yarn.sh
命令输出：
[root@hadoop101 hadoop]# /usr/local/hadoop/sbin/start-yarn.sh
starting yarn daemons
starting resourcemanager, logging to /usr/local/hadoop/logs/yarn-root-resourcemanager-hadoop101.out
hadoop104: starting nodemanager, logging to /usr/local/hadoop/logs/yarn-root-nodemanager-hadoop104.out
hadoop103: starting nodemanager, logging to /usr/local/hadoop/logs/yarn-root-nodemanager-hadoop103.out
hadoop102: starting nodemanager, logging to /usr/local/hadoop/logs/yarn-root-nodemanager-hadoop102.out
hadoop101: starting nodemanager, logging to /usr/local/hadoop/logs/yarn-root-nodemanager-hadoop101.out
[root@hadoop101 hadoop]#
验证：
[root@hadoop101 hadoop]# jps
23396 JournalNode
25154 ResourceManager
25247 NodeManager
24232 DataNode
23558 NameNode
22491 QuorumPeerMain
25281 Jps
[root@hadoop101 hadoop]#
【产生java进程ResourceManager和NodeManager】
也可以通过浏览器访问，如下图
在hadoop101、hadoop102、hadoop103、hadoop104上分别执行命令：/usr/local/hadoop/sbin/hadoop-daemon.sh start zkfc
命令输出（以hadoop101为例）：
[root@hadoop101 hadoop]# /usr/local/hadoop/sbin/hadoop-daemon.sh start zkfc
starting zkfc, logging to /usr/local/hadoop/logs/hadoop-root-zkfc-hadoop101.out
[root@hadoop101 hadoop]#
验证（以hadoop101为例）：
[root@hadoop101 hadoop]# jps
24599 DFSZKFailoverController
23396 JournalNode
24232 DataNode
23558 NameNode
22491 QuorumPeerMain
24654 Jps
[root@hadoop101 hadoop]#
【产生java进程DFSZKFailoverController】
在任意一个节点上执行以下命令（这里以hadoop101为例），把数据上传到HDFS集群中
[root@hadoop101 hadoop]# pwd
/usr/local/hadoop/etc/hadoop
[root@hadoop101 hadoop]# ls
capacity-scheduler.xml hadoop-metrics.properties httpfs-site.xml ssl-server.xml.example
configuration.xsl hadoop-policy.xml log4j.properties startall.sh
container-executor.cfg hdfs2-site.xml mapred-env.sh yarn-env.sh
core-site.xml hdfs-site.xml mapred-queues.xml.template yarn-site.xml
fairscheduler.xml httpfs-env.sh mapred-site.xml zookeeper.out
hadoop-env.sh httpfs-log4j.properties slaves
hadoop-metrics2.properties httpfs-signature.secret ssl-client.xml.example
[root@hadoop101 hadoop]# hadoop fs -put core-site.xml /
【上传到集群中，默认是上传到HDFS联盟的c1集群中】
验证：
[root@hadoop101 hadoop]# hadoop fs -ls /
Found 1 items
-rw-r--r-- 2 root supergroup 446 2014-02-12 09:00 /core-site.xml
[root@hadoop101 hadoop]#
也可以通过浏览器查看，数据默认是放在第一个集群中的
在hadoop101上执行以下命令 hadoop jar /usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.2.0.jar wordcount /core-site.xml /out
命令输出：
[root@hadoop101 hadoop]# hadoop jar /usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.2.0.jar wordcount /core-site.xml /out
14/02/12 11:43:55 INFO client.RMProxy: Connecting to ResourceManager at hadoop101/192.168.80.101:8032
14/02/12 11:43:59 INFO input.FileInputFormat: Total input paths to process : 1
14/02/12 11:43:59 INFO mapreduce.JobSubmitter: number of splits:1
14/02/12 11:43:59 INFO Configuration.deprecation: user.name is deprecated. Instead, use mapreduce.job.user.name
14/02/12 11:43:59 INFO Configuration.deprecation: mapred.jar is deprecated. Instead, use mapreduce.job.jar
14/02/12 11:43:59 INFO Configuration.deprecation: mapred.output.value.class is deprecated. Instead, use mapreduce.job.output.value.class
14/02/12 11:43:59 INFO Configuration.deprecation: mapreduce.combine.class is deprecated. Instead, use mapreduce.job.combine.class
14/02/12 11:43:59 INFO Configuration.deprecation: mapreduce.map.class is deprecated. Instead, use mapreduce.job.map.class
14/02/12 11:43:59 INFO Configuration.deprecation: mapred.job.name is deprecated. Instead, use mapreduce.job.name
14/02/12 11:43:59 INFO Configuration.deprecation: mapreduce.reduce.class is deprecated. Instead, use mapreduce.job.reduce.class
14/02/12 11:43:59 INFO Configuration.deprecation: mapred.input.dir is deprecated. Instead, use mapreduce.input.fileinputformat.inputdir
14/02/12 11:43:59 INFO Configuration.deprecation: mapred.output.dir is deprecated. Instead, use mapreduce.output.fileoutputformat.outputdir
14/02/12 11:43:59 INFO Configuration.deprecation: mapred.map.tasks is deprecated. Instead, use mapreduce.job.maps
14/02/12 11:43:59 INFO Configuration.deprecation: mapred.output.key.class is deprecated. Instead, use mapreduce.job.output.key.class
14/02/12 11:43:59 INFO Configuration.deprecation: mapred.working.dir is deprecated. Instead, use mapreduce.job.working.dir
14/02/12 11:44:01 INFO mapreduce.JobSubmitter: Submitting tokens for job: job_1392169506119_0002
14/02/12 11:44:04 INFO impl.YarnClientImpl: Submitted application application_1392169506119_0002 to ResourceManager at hadoop101/192.168.80.101:8032
14/02/12 11:44:05 INFO mapreduce.Job: The url to track the job: http://hadoop101:8088/proxy/application_1392169506119_0002/
14/02/12 11:44:05 INFO mapreduce.Job: Running job: job_1392169506119_0002
14/02/12 11:44:41 INFO mapreduce.Job: Job job_1392169506119_0002 running in uber mode : false
14/02/12 11:44:41 INFO mapreduce.Job: map 0% reduce 0%
14/02/12 11:45:37 INFO mapreduce.Job: map 100% reduce 0%
14/02/12 11:46:54 INFO mapreduce.Job: map 100% reduce 100%
14/02/12 11:47:01 INFO mapreduce.Job: Job job_1392169506119_0002 completed successfully
14/02/12 11:47:02 INFO mapreduce.Job: Counters: 43
File System Counters
FILE: Number of bytes read=472
FILE: Number of bytes written=164983
FILE: Number of read operations=0
FILE: Number of large read operations=0
FILE: Number of write operations=0
HDFS: Number of bytes read=540
HDFS: Number of bytes written=402
HDFS: Number of read operations=6
HDFS: Number of large read operations=0
HDFS: Number of write operations=2
Job Counters
Launched map tasks=1
Launched reduce tasks=1
Data-local map tasks=1
Total time spent by all maps in occupied slots (ms)=63094
Total time spent by all reduces in occupied slots (ms)=57228
Map-Reduce Framework
Map input records=17
Map output records=20
Map output bytes=496
Map output materialized bytes=472
Input split bytes=94
Combine input records=20
Combine output records=16
Reduce input groups=16
Reduce shuffle bytes=472
Reduce input records=16
Reduce output records=16
Spilled Records=32
Shuffled Maps =1
Failed Shuffles=0
Merged Map outputs=1
GC time elapsed (ms)=632
CPU time spent (ms)=3010
Physical memory (bytes) snapshot=255528960
Virtual memory (bytes) snapshot=1678471168
Total committed heap usage (bytes)=126660608
Shuffle Errors
BAD_ID=0
CONNECTION=0
IO_ERROR=0
WRONG_LENGTH=0
WRONG_MAP=0
WRONG_REDUCE=0
File Input Format Counters
Bytes Read=446
File Output Format Counters
Bytes Written=402
[root@hadoop101 hadoop]#
验证：
[root@hadoop101 hadoop]# hadoop fs -ls /out
Found 2 items
-rw-r--r-- 2 root supergroup 0 2014-02-12 11:46 /out/_SUCCESS
-rw-r--r-- 2 root supergroup 402 2014-02-12 11:46 /out/part-r-00000
[root@hadoop101 hadoop]# hadoop fs -text /out/part-r-00000
</configuration> 1
</property> 3
<?xml 1
<?xml-stylesheet 1
<configuration> 1
<name>fs.defaultFS</name> 1
<name>ha.zookeeper.quorum</name> 1
<name>hadoop.tmp.dir</name> 1
<property> 3
<value>/usr/local/hadoop/tmp</value> 1
<value>hadoop101:2181,hadoop102:2181,hadoop103:2181</value> 1
<value>hdfs://cluster1</value> 1
encoding="UTF-8"?> 1
href="configuration.xsl"?> 1
type="text/xsl" 1
version="1.0" 1
[root@hadoop101 hadoop]#
观察cluster1的两个NameNode的状态，hadoop101的状态是standby，hadoop102的状态是active，如下图。
下面我们杀死hadoop102的NameNode进程，观察hadoop101的状态是否会自动切换成active。
在hadoop102执行以下命令
[root@hadoop102 hadoop]# jps
13389 DFSZKFailoverController
12355 JournalNode
13056 DataNode
15660 Jps
14496 NodeManager
12573 NameNode
12081 QuorumPeerMain
[root@hadoop102 hadoop]# kill -9 12573
[root@hadoop102 hadoop]# jps
13389 DFSZKFailoverController
12355 JournalNode
13056 DataNode
14496 NodeManager
15671 Jps
12081 QuorumPeerMain
[root@hadoop102 hadoop]#
再观察页面，发现如下图所示
证明HDFS的高可靠是可用的。
到此，相信大家对“hadoop2的automatic HA+Federation+Yarn怎么配置”有了更深的了解，不妨来实际操作一番吧！这里是亿速云网站，更多相关内容可以进入相关频道进行查询，关注我们，继续学习！
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