超详细的Hadoop2配置详解

Posted 2020-11-20

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1. 集群环境
Master 192.168.2.100
Slave1 192.168.2.101
Slave2 192.168.2.102

2. 下载安装包
#Master
wget http://mirrors.shu.edu.cn/apache/hadoop/common/hadoop-2.8.4/hadoop-2.8.4.tar.gz
tar zxvf hadoop-2.8.4.tar.gz

3. 修改Hadoop配置文件
#Master
cd hadoop-2.8.4/etc/hadoop
vim hadoop-env.sh
export JAVA_HOME=/usr/local/src/jdk1.8.0_152

vim yarn-env.sh
export JAVA_HOME=/usr/local/src/jdk1.8.0_152

vim slaves
slave1
slave2

vim core-site.xml

<configuration>
        <property>
                <name>fs.defaultFS</name>
                <value>hdfs://master:9000</value>
        </property>
        <property>
                <name>hadoop.tmp.dir</name>
                <value>file:/usr/local/hadoop-2.8.4/tmp</value>
        </property>
</configuration>

vim hdfs-site.xml

<configuration>
        <property>
                <name>dfs.namenode.secondary.http-address</name>
                <value>master:9001</value>
        </property>
        <property>
                <name>dfs.namenode.name.dir</name>
                <value>file:/usr/local/hadoop-2.8.4/dfs/name</value>
        </property>
        <property>
                <name>dfs.datanode.data.dir</name>
                <value>file:/usr/local/hadoop-2.8.4/dfs/data</value>
        </property>
        <property>
                <name>dfs.repliction</name>
                <value>3</value>
        </property>
</configuration>

vim mapred-site.xml

<configuration>
&emsp;<property>
&emsp;&emsp;<name>mapreduce.framework.name</name>
&emsp;&emsp;<value>yarn</value>
&emsp;</property>
</configuration>

vim yarn-site.xml

<configuration>
&emsp;&emsp;<property>
&emsp;&emsp;&emsp;&emsp;<name>yarn.nodemanager.aux-services</name>
&emsp;&emsp;&emsp;&emsp;<value>mapreduce_shuffle</value>
&emsp;&emsp;</property>
&emsp;&emsp;<property>
&emsp;&emsp;&emsp;&emsp;name>yarn.nodemanager.aux-services.mapreduce.shuffle.class</name>
&emsp;&emsp;&emsp;&emsp;<value>org.apache.hadoop.mapred.ShuffleHandler</value>
&emsp;&emsp;</property>
&emsp;&emsp;<property>
&emsp;&emsp;&emsp;&emsp;name>yarn.resourcemanager.address</name>
&emsp;&emsp;&emsp;&emsp;<value>master:8032</value>
&emsp;&emsp;</property>
&emsp;&emsp;<property>
&emsp;&emsp;&emsp;&emsp;<name>yarn.resourcemanager.scheduler.address</name>
&emsp;&emsp;&emsp;&emsp;<value>master:8030</value>
&emsp;&emsp;</property>
&emsp;&emsp;<property>
&emsp;&emsp;&emsp;&emsp;<name>yarn.resourcemanager.resource-tracker.address</name>
&emsp;&emsp;&emsp;&emsp;<value>master:8035</value>
&emsp;&emsp;</property>
&emsp;&emsp;<property>
&emsp;&emsp;&emsp;&emsp;<name>yarn.resourcemanager.admin.address</name>
&emsp;&emsp;&emsp;&emsp;<value>master:8033</value>
&emsp;&emsp;</property>
&emsp;&emsp;<property>
&emsp;&emsp;&emsp;&emsp;<name>yarn.resourcemanager.webapp.address</name>
&emsp;&emsp;&emsp;&emsp;<value>master:8088</value>
&emsp;&emsp;</property>
</configuration>

#创建临时目录和文件目录
mkdir /usr/local/hadoop-2.8.4/tmp
mkdir -p /usr/local/hadoop-2.8.4/dfs/name
mkdir -p /usr/local/hadoop-2.8.4/dfs/data

4. 配置环境变量
#Master、Slave1、Slave2
vim ~/.bashrc
HADOOP_HOME=/usr/local/src/hadoop-2.8.2
export PATH=$PATH:$HADOOP_HOME/bin
#刷新环境变量
source ~/.bashrc

5. 拷贝安装包
#Master
scp -r /usr/local/src/hadoop-2.8.4 [email protected]:/usr/local/src/hadoop-2.8.4
scp -r /usr/local/src/hadoop-2.8.4 [email protected]:/usr/local/src/hadoop-2.8.4

6. 启动集群
#Master
#初始化Namenode
hadoop namenode -format
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