一,服务器配置
1,更改主机名
- 在终端窗口中输入命令:hostname,可以查看到当前主机的主机名
- 编辑vim /etc/hostname可以修改主机名,这里修改第一台为例,修改后reboot重启即可生效
- 其他linux发行版本的命令可能不同,之后的命令将不做赘述

Love programming more love life.
mowang·2020-07-02
sudo ufw status 查看防火墙状态
sudo ufw disable 关闭防火墙
java -version 命令检查是否已经安装
sudo mkdir -p /usr/local/java 创建放置jdk的目录
cd /usr/local/java 进入目录
export JAVA_HOME=/usr/local/java/jdk1.8.0_181
export PATH=$JAVA_HOME/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
<configuration>
<property>
<name>hadoop.tmp.dir</name>
<value>/usr/local/hadoop/tmp</value>
<description>Abase for other temporary directories.</description>
</property>
<property>
<name>fs.defaultFS</name>
<value>hdfs://node-1:9000</value>
</property>
</configuration>
<configuration>
<property>
<name>dfs.replication</name>
<value>3</value>
</property>
<property>
<name>dfs.namenode.name.dir</name>
<value>/usr/local/hadoop/tmp/dfs/name</value>
</property>
<property>
<name>dfs.datanode.data.dir</name>
<value>/usr/local/hadoop/tmp/dfs/data</value>
</property>
<property>
<name>dfs.namenode.secondary.http-address</name>
<value>node-2:50090</value>
</property>
</configuration>
<configuration>
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
</configuration>
<configuration>
<!--指定yarn的resourcemanager(老大)的地址-->
<property>
<name>yarn.resourcemanager.hostname</name>
<value>node-1</value>
</property>
<!--nodemanager上运行的附属服务-->
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
</configuration>
export JAVA_HOME=/usr/local/java/jdk1.8.0_181
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export HADOOP_HOME=/usr/local/hadoop
export PATH=${JAVA_HOME}/bin:${HADOOP_HOME}/bin:${HADOOP_HOME}/sbin:$PATH
本文作者为 mowang ,转载请注明
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