Hadoop2.2.0分布式安装

jopen 9年前


确保ssh能无密码登录,jdk已安装,环境变量配置好(具体可参加相应教程)

1、下载hadoop-2.2.0.tar.gz,解压tar -xzvf  hadoop-2.2.0.tar.gz

2、进入hadoop目录下创建tmp目录和dfs/data目录、dfs/name目录

3、进入配置文件存放目录${HADOOP_HOME}/etc/hadoop

3-1,修改hadoop-env.sh和yarn-env.sh中JAVA_HOME使之与系统一致

3-2,core-site.xml内容如下:

    <configuration>        <property>          <name>fs.defaultFS</name>          <value>hdfs://master:9101</value>        <description></description>        </property>        <property>          <name>hadoop.tmp.dir</name>          <value>/root/hadoop-2.2.0/tmp</value>        <description>tmp临时目录</description>        </property>        <property>          <name>io.native.lib.available</name>          <value>true</value>          <description>是否启用本地native库</description>        </property>  
</div> </div> 3-3hdfs-site.xml内容如下:

    <configuration>        <property>          <name>dfs.namenode.name.dir</name>          <value>/root/hadoop-2.2.0/dfs/name</value>        </property>        <property>          <name>dfs.datanode.data.dir</name>          <value>/root/hadoop-2.2.0/dfs/data</value>        </property>        <property>          <name>dfs.secondary.http.address</name>          <value>master:9001</value>        </property>        <property>        <name>dfs.webhdfs.enabled</name>        <value>true</value>        </property>        </configuration>  
</div> </div>  3-4、mapred-site.xml内容如下:
    <configuration>            <property>                <name>mapreduce.framework.name</name>                <value>yarn</value>            </property>        </configuration>  
</div> </div>
 2-5、yarn-site.xml内容如下:
<configuration>    <!-- Site specific YARN configuration properties -->    <property>    <name>yarn.resourcemanager.address</name>    <value>master:8032</value>    </property>    <property>    <name>yarn.resourcemanager.scheduler.address</name>    <value>master:8030</value>    </property>    <property>    <name>yarn.resourcemanager.webapp.address</name>    <value>master:8088</value>    </property>    <property>    <name>yarn.resourcemanager.resource-tracker.address</name>    <value>master:8031</value>    </property>    <property>    <name>yarn.nodemanager.aux-services</name>    <value>mapreduce_shuffle</value>    </property>    </configuration>  
                                                                              

3-5、根据实际情况修改masters文件slaves文件

4、利用scp将整个hadoop文件夹同步到各个节点

5、namenode格式化
hadoop namenode -format 或hdfs namenode -format

6、启动

start-dfs.sh && start-yarn.sh 或start-all.sh

启动完后在master上通过jps可查看到进程ResourceManager、SecondaryNameNode、NameNode;

在slave上可查看到NodeManager、DataNode。

此外,也可在web界面上查看,地址http://master:8088/cluster

若发现进程启动失败,则进入出错节点的${HADOOP_HOME}/logs目录下查看相应*.log文件

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