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hadoop在Linux平台安装.md

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hadoop在Linux平台安装
2019-09-25 14:50:35 -0700
Hadoop
Linux

1. 解压好放在/usr/local位置

  • 配置环境变量 编辑/etc/profile文件
export HADOOP_HOME=/usr/local/hadoop-2.7.6
export PATH=$PATH:$HADOOP_HOME/bin:$HADOOP_HOME/sbin
  • 启用source /etc/profile来启动环境变量配置

2. 进入/usr/local/hadoop创建tmp文件夹

  • 创建文件夹
    $HADOOP_HOME$/tmp/dfs/data
    $HADOOP_HOME$/tmp/dfs/name
  • 编辑/etc/hadoop/core-site.xml
<configuration>
        <property>
             <name>hadoop.tmp.dir</name>
             <value>file:/usr/local/hadoop/tmp</value>
             <description>Abase for other temporary directories.</description>
        </property>
        <property>
             <name>fs.defaultFS</name>
             <value>hdfs://localhost:9000</value>
        </property>
</configuration>
  • 编辑/etc/hadoop/hdfs-site.xml
<configuration>
        <property>
             <name>dfs.replication</name>
             <value>1</value>
        </property>
        <property>
             <name>dfs.namenode.name.dir</name>
             <value>file:/usr/local/hadoop/tmp/dfs/name</value>
        </property>
        <property>
             <name>dfs.datanode.data.dir</name>
             <value>file:/usr/local/hadoop/tmp/dfs/data</value>
        </property>
</configuration>

启动命令

  • ./bin/hdfs namenode -format
  • ./sbin/start-dfs.sh

查看启动是否成功

  • jps
    可以看到有 14304 Jps
    13431 NameNode
    13863 SecondaryNameNode
    13627 DataNode
  • 浏览器中输入localhost:50070查看控制信息