Hadoop安装(二) --- Hadoop安装

阳光穿透心脏的1/2处 2024-03-27 13:14 83阅读 0赞

**目录**

修改hadoop313的权限

更改配置文件

配置core-site.xml

配置hadoop-env.sh

配置hdfs-site.xml

配置mapred-site.xml

配置yarn-site.xml

配置环境

刷新当前的shell环境

初始化

启动所有 SH

--------------------

接上一篇 [Hadoop安装(一) --- JDK安装][Hadoop_ --- JDK]

### 修改hadoop313的权限 ###

在/opt目录下，将hadoop目录下的所有权限更改

> chown -R root:root ./hadoop313/

![aee84ec0121543268b63706d860828c8.png][]

### 更改配置文件 ###

**（注意更改配置文件里面有些名字需要改）**

切换到opt/soft/hadoop313/etc/hadoop目录下面

在此目录下新建一个文件夹data,作为namenode上本地的hadoop临时文件夹

#### 配置core-site.xml ####

> vim ./core-site.xml

<configuration>
       <property>
         <name>fs.defaultFS</name>
          <value>hdfs://hadoop1:9000</value>
        </property>
       <property>
          <name>hadoop.tmp.dir</name>
          <value>/opt/soft/hadoop313/data</value>
          <description>namenode上本地的hadoop临时文件夹</description>
       </property>
       <property>
          <name>hadoop.http.staticuser.user</name>
          <value>root</value>
        </property>
       <property>
          <name>io.file.buffer.size</name>
          <value>131072</value>
         <description>读写队列缓存：128k</description>
        </property>
        <property>
          <name>hadoop.proxyuser.root.hosts</name>
         <value>*</value>
        </property>
        <property>
          <name>hadoop.proxyuser.root.groups</name>
          <value>*</value>
        </property>
      </configuration>

#### 配置hadoop-env.sh ####

> vim hadoop-env.sh

export JAVA_HOME=/opt/soft/jdk180

#### 配置hdfs-site.xml ####

> vim hdfs-site.xml

<configuration>
      <property>
        <name>dfs.replication</name>
        <value>1</value>
        <description>hadoop中每一个block文件的备份数量</description>
      </property>
      <property>
        <name>dfs.namenode.name.dir</name>
        <value>/opt/soft/hadoop313/data/dfs/name</value>
        <description>namenode上存储hdfsq名字空间元数据的目录</description>
      </property>
      <property>
        <name>dfs.datanode.data.dir</name>
        <value>/opt/soft/hadoop313/data/dfs/data</value>
        <description>datanode上数据块的物理存储位置目录</description>
      </property>
      <property>
        <name>dfs.permissions.enabled</name>
        <value>false</value>
        <description>关闭权限验证</description>
      </property>
    </configuration>

#### 配置mapred-site.xml ####

> vim mapred-site.xml

<configuration>
      <property>
        <name>mapreduce.framework.name</name>
        <value>yarn</value>
        <description>job执行框架：local,classic or yarn</description>
        <final>true</final>
      </property>
      <property>
        <name>mapreduce.application.classpath</name>
        <value>/opt/soft/hadoop313/etc/hadoop:/opt/soft/hadoop313/share/hadoop/common/lib/*:/opt/soft/hadoop313/share/hadoop/common/*:/opt/soft/hadoop313/share/hadoop/hdfs/*:/opt/soft/hadoop313/share/hadoop/hdfs/lib/*:/opt/soft/hadoop313/share/hadoop/mapreduce/*:/opt/soft/hadoop313/share/hadoop/mapreduce/lib/*:/opt/soft/hadoop313/share/hadoop/yarn/*:/opt/soft/hadoop313/share/hadoop/yarn/lib/*
    </value>
      </property>
      <property>
        <name>mapreduce.jobhistory.address</name>
        <value>hadoop1:10020</value>
      </property>
      <property>
        <name>mapreduce.jobhistory.webapp.address</name>
        <value>hadoop1:19888</value>
      </property>
      <property>
        <name>mapreduce.map.memory.mb</name>
        <value>1024</value>
      </property>
      <property>
        <name>mapreduce.reduce.memory.mb</name>
        <value>1024</value>
      </property>
    </configuration>

#### 配置yarn-site.xml ####

> vim yarn-site.xml

<configuration>
    
    
      <property>
        <name>yarn.resourcemanager.connect.retry-interval.ms</name>
        <value>20000</value>
      </property>
      <property>
        <name>yarn.resourcemanager.scheduler.class</name>
        <value>org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler</value>
      </property>
      <property>
        <name>yarn.nodemanager.localizer.address</name>
        <value>hadoop1:8040</value>
      </property>
      <property>
        <name>yarn.nodemanager.address</name>
        <value>hadoop1:8050</value>
      </property>
      <property>
        <name>yarn.nodemanager.webapp.address</name>
        <value>hadoop1:8042</value>
      </property>
      <property>
        <name>yarn.nodemanager.aux-services</name>
        <value>mapreduce_shuffle</value>
      </property>
      <property>
        <name>yarn.nodemanager.local-dirs</name>
        <value>/opt/soft/hadoop313/yarndata/yarn</value>
      </property>
      <property>
        <name>yarn.nodemanager.log-dirs</name>
        <value>/opt/soft/hadoop313/yarndata/log</value>
      </property>
    </configuration>

### 配置环境 ###

> vim /etc/profile

#HADOOP_HOME
    export HADOOP_HOME=/opt/soft/hadoop313
    export PATH=$PATH:$HADOOP_HOME/bin:$HADOOP_HOME/sbin:$HADOOP_HOME/lib
    export HDFS_NAMENODE_USER=root
    export HDFS_DATANODE_USER=root
    export HDFS_SECONDARYNAMENODE_USER=root
    export HDFS_JOURNALNODE_USER=root
    export HDFS_ZKFC_USER=root
    export YARN_RESOURCEMANAGER_USER=root
    export YARN_NODEMANAGER_USER=root
    export HADOOP_MAPRED_HOME=$HADOOP_HOME
    export HADOOP_COMMON_HOME=$HADOOP_HOME
    export HADOOP_HDFS_HOME=$HADOOP_HOME
    export HADOOP_YARN_HOME=$HADOOP_HOME
    export HADOOP_INSTALL=$HADOOP_HOME
    export HADOOP_COMMON_LIB_NATIVE_DIR=$HADOOP_HOME/lib/native
    export HADOOP_LIBEXEC_DIR=$HADOOP_HOME/libexec
    export HADOOP_CONF_DIR=$HADOOP_HOME/etc/hadoop

配置完成之后

### 刷新当前的shell环境 ###

> source /etc/profile

### 初始化 ###

> hdfs namenode -format

![c6a1a3c80eef4e3a882d79a8bf30757f.png][]

### 启动所有 SH ###

> start-all.sh

输入jps，出来以下结果则启动成功

![4220e8772fc54c729ff04a0e7aa0070f.png][]

输入IP：9870访问网站会出来下面页面

例如：192.168.111.111：9870

![22d60aa350fb4d4d9dec2a0c6f307033.png][]

[Hadoop_ --- JDK]: https://blog.csdn.net/qq_57151931/article/details/128878569?spm=1001.2014.3001.5502
[aee84ec0121543268b63706d860828c8.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/27/a64f296fc7574b32a911f28be3957538.png
[c6a1a3c80eef4e3a882d79a8bf30757f.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/27/cc19189a9a6f4c01b80f1ae94ce9a0c5.png
[4220e8772fc54c729ff04a0e7aa0070f.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/27/55f61f2df1c14a33b0d2d44b9cff45c6.png
[22d60aa350fb4d4d9dec2a0c6f307033.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/27/58b93fe48fcd47fbb815856ca1741887.png