Hadoop部署（Ubuntu）-陌上烟雨遥

1.1 配置Java环境变量

命令：


<span class="token function">tar</span> -zxvf jdk-8u211-linux-x64.tar.gz -C /home/user/tools 
<span class="token function">tar</span> -zxvf jdk-8u211-linux-x64.tar.gz -C /home/user/tools 
tar -zxvf jdk-8u211-linux-x64.tar.gz -C /home/user/tools

命令：


<span class="token function">vim</span> .bashrc 
<span class="token function">vim</span> .bashrc 
vim .bashrc

在.bashrc文件中添加以下内容：


<span class="token builtin class-name">export</span> <span class="token assign-left variable">JAVA_HOME</span><span class="token operator">=</span>/home/user/tools/jdk1.8.0_211 <span class="token builtin class-name">export</span> <span class="token assign-left variable">JRE_HOME</span><span class="token operator">=</span>/home/user/tools/jdk1.8.0_211/jre <span class="token builtin class-name">export</span> <span class="token assign-left variable">CLASSPATH</span><span class="token operator">=</span>.:<span class="token variable">$JAVA_HOME</span>/lib:<span class="token variable">$JRE_HOME</span>/lib:<span class="token variable">$CLASSPATH</span> <span class="token builtin class-name">export</span> <span class="token assign-left variable"><span class="token environment constant">PATH</span></span><span class="token operator">=</span><span class="token variable">$JAVA_HOME</span>/bin:<span class="token variable">$JRE_HOME</span>/bin:<span class="token environment constant">$PATH</span> 
<span class="token builtin class-name">export</span> <span class="token assign-left variable">JAVA_HOME</span><span class="token operator">=</span>/home/user/tools/jdk1.8.0_211 <span class="token builtin class-name">export</span> <span class="token assign-left variable">JRE_HOME</span><span class="token operator">=</span>/home/user/tools/jdk1.8.0_211/jre <span class="token builtin class-name">export</span> <span class="token assign-left variable">CLASSPATH</span><span class="token operator">=</span>.:<span class="token variable">$JAVA_HOME</span>/lib:<span class="token variable">$JRE_HOME</span>/lib:<span class="token variable">$CLASSPATH</span> <span class="token builtin class-name">export</span> <span class="token assign-left variable"><span class="token environment constant">PATH</span></span><span class="token operator">=</span><span class="token variable">$JAVA_HOME</span>/bin:<span class="token variable">$JRE_HOME</span>/bin:<span class="token environment constant">$PATH</span> 
export JAVA_HOME=/home/user/tools/jdk1.8.0_211 export JRE_HOME=/home/user/tools/jdk1.8.0_211/jre export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib:$CLASSPATH export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATH

命令：


<span class="token builtin class-name">source</span> .bashrc 
<span class="token builtin class-name">source</span> .bashrc 
source .bashrc

注意：所有节点都要配置

1.2 配置Hadoop环境变量

修改.bashrc文件：


<span class="token builtin class-name">export</span> <span class="token assign-left variable">JAVA_HOME</span><span class="token operator">=</span>/home/user/tools/jdk1.8.0_211 <span class="token builtin class-name">export</span> <span class="token assign-left variable">JRE_HOME</span><span class="token operator">=</span>/home/user/tools/jdk1.8.0_211/jre <span class="token builtin class-name">export</span> <span class="token assign-left variable">HADOOP_HOME</span><span class="token operator">=</span>/home/user/tools/hadoop-2.10.1 <span class="token builtin class-name">export</span> <span class="token assign-left variable">HADOOP_CONF_DIR</span><span class="token operator">=</span><span class="token variable">$HADOOP_HOME</span>/etc/hadoop <span class="token builtin class-name">export</span> <span class="token assign-left variable">YARN_CONF_DIR</span><span class="token operator">=</span><span class="token variable">$HADOOP_HOME</span>/etc/hadoop <span class="token builtin class-name">export</span> <span class="token assign-left variable">CLASSPATH</span><span class="token operator">=</span>.:<span class="token variable">$JAVA_HOME</span>/lib:<span class="token variable">$JRE_HOME</span>/lib:<span class="token variable">$CLASSPATH</span> <span class="token builtin class-name">export</span> <span class="token assign-left variable"><span class="token environment constant">PATH</span></span><span class="token operator">=</span><span class="token variable">$JAVA_HOME</span>/bin:<span class="token variable">$JRE_HOME</span>/bin:<span class="token environment constant">$PATH</span><span class="token builtin class-name">:</span><span class="token variable">$HADOOP_HOME</span>/bin 
<span class="token builtin class-name">export</span> <span class="token assign-left variable">JAVA_HOME</span><span class="token operator">=</span>/home/user/tools/jdk1.8.0_211 <span class="token builtin class-name">export</span> <span class="token assign-left variable">JRE_HOME</span><span class="token operator">=</span>/home/user/tools/jdk1.8.0_211/jre <span class="token builtin class-name">export</span> <span class="token assign-left variable">HADOOP_HOME</span><span class="token operator">=</span>/home/user/tools/hadoop-2.10.1 <span class="token builtin class-name">export</span> <span class="token assign-left variable">HADOOP_CONF_DIR</span><span class="token operator">=</span><span class="token variable">$HADOOP_HOME</span>/etc/hadoop <span class="token builtin class-name">export</span> <span class="token assign-left variable">YARN_CONF_DIR</span><span class="token operator">=</span><span class="token variable">$HADOOP_HOME</span>/etc/hadoop <span class="token builtin class-name">export</span> <span class="token assign-left variable">CLASSPATH</span><span class="token operator">=</span>.:<span class="token variable">$JAVA_HOME</span>/lib:<span class="token variable">$JRE_HOME</span>/lib:<span class="token variable">$CLASSPATH</span> <span class="token builtin class-name">export</span> <span class="token assign-left variable"><span class="token environment constant">PATH</span></span><span class="token operator">=</span><span class="token variable">$JAVA_HOME</span>/bin:<span class="token variable">$JRE_HOME</span>/bin:<span class="token environment constant">$PATH</span><span class="token builtin class-name">:</span><span class="token variable">$HADOOP_HOME</span>/bin 
export JAVA_HOME=/home/user/tools/jdk1.8.0_211 export JRE_HOME=/home/user/tools/jdk1.8.0_211/jre export HADOOP_HOME=/home/user/tools/hadoop-2.10.1 export HADOOP_CONF_DIR=$HADOOP_HOME/etc/hadoop export YARN_CONF_DIR=$HADOOP_HOME/etc/hadoop export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib:$CLASSPATH export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATH:$HADOOP_HOME/bin

使环境变量生效，
命令：


<span class="token builtin class-name">source</span> .bashrc 
<span class="token builtin class-name">source</span> .bashrc 
source .bashrc

1.3 配置hostname

修改3个节点的/etc/hostname文件，分别命名为hadoop01、hadoop02、hadoop03

1.4 配置hosts

修改3个节点的/etc/hosts文件，将IP地址与hostname相对应


<span class="token number">172.16</span>.70.165 hadoop01 <span class="token number">172.16</span>.70.166 hadoop02 <span class="token number">172.16</span>.70.167 hadoop03 
<span class="token number">172.16</span>.70.165 hadoop01 <span class="token number">172.16</span>.70.166 hadoop02 <span class="token number">172.16</span>.70.167 hadoop03 
172.16.70.165 hadoop01 172.16.70.166 hadoop02 172.16.70.167 hadoop03

1.5 设置服务器间免密登录

命令：


ssh-keygen -t rsa 
ssh-keygen -t rsa 
ssh-keygen -t rsa

命令：


ssh-copy-id -i ~/.ssh/id_rsa.pub user@<span class="token operator"><</span>B服务器的IP<span class="token operator">></span> 
ssh-copy-id -i ~/.ssh/id_rsa.pub user@<span class="token operator"><</span>B服务器的IP<span class="token operator">></span> 
ssh-copy-id -i ~/.ssh/id_rsa.pub user@<B服务器的IP>

1.6 创建存储目录

将一块较大的磁盘挂载到/data/路径下，并修改/data/目录的权限，
命令：


<span class="token function">chown</span> –R user:user /data 
<span class="token function">chown</span> –R user:user /data 
chown –R user:user /data

在全部3个节点上，在/data/路径下，
命令：


<span class="token function">sudo</span> <span class="token function">mkdir</span> tmp <span class="token function">sudo</span> <span class="token function">chmod</span> <span class="token number">777</span> -R tmp/ 
<span class="token function">sudo</span> <span class="token function">mkdir</span> tmp <span class="token function">sudo</span> <span class="token function">chmod</span> <span class="token number">777</span> -R tmp/ 
sudo mkdir tmp sudo chmod 777 -R tmp/

在全部3个节点上，在/data/路径下，
命令：


<span class="token function">sudo</span> <span class="token function">mkdir</span> hadoop-logs <span class="token function">sudo</span> <span class="token function">chmod</span> <span class="token number">777</span> -R hadoop-logs/ 
<span class="token function">sudo</span> <span class="token function">mkdir</span> hadoop-logs <span class="token function">sudo</span> <span class="token function">chmod</span> <span class="token number">777</span> -R hadoop-logs/ 
sudo mkdir hadoop-logs sudo chmod 777 -R hadoop-logs/

在全部3个节点上，在/data/路径下，
命令：


<span class="token function">sudo</span> <span class="token function">mkdir</span> yarn-logs <span class="token function">sudo</span> <span class="token function">chmod</span> <span class="token number">777</span> -R yarn-logs/ 
<span class="token function">sudo</span> <span class="token function">mkdir</span> yarn-logs <span class="token function">sudo</span> <span class="token function">chmod</span> <span class="token number">777</span> -R yarn-logs/ 
sudo mkdir yarn-logs sudo chmod 777 -R yarn-logs/

2.1 官网下载

2.2 解压

在全部3个节点上，
命令：


<span class="token function">tar</span> -zxvf hadoop-2.10.1.tar.gz -C /home/user/tools/hadoop-2.10.1/ 
<span class="token function">tar</span> -zxvf hadoop-2.10.1.tar.gz -C /home/user/tools/hadoop-2.10.1/ 
tar -zxvf hadoop-2.10.1.tar.gz -C /home/user/tools/hadoop-2.10.1/

3.1 core-site.xml文件

在主节点上，
修改~/hadoop-2.10.1/etc/hadoop/core-site.xml文件：


<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>configuration</span><span class="token punctuation">></span></span>  <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>name</span><span class="token punctuation">></span></span>fs.defaultFS<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>name</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>value</span><span class="token punctuation">></span></span>hdfs://master:9000<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>value</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>property</span><span class="token punctuation">></span></span>  <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>name</span><span class="token punctuation">></span></span>hadoop.tmp.dir<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>name</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>value</span><span class="token punctuation">></span></span>/data/tmp<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>value</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>configuration</span><span class="token punctuation">></span></span> 
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>configuration</span><span class="token punctuation">></span></span>  <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>name</span><span class="token punctuation">></span></span>fs.defaultFS<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>name</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>value</span><span class="token punctuation">></span></span>hdfs://master:9000<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>value</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>property</span><span class="token punctuation">></span></span>  <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>name</span><span class="token punctuation">></span></span>hadoop.tmp.dir<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>name</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>value</span><span class="token punctuation">></span></span>/data/tmp<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>value</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>configuration</span><span class="token punctuation">></span></span> 
<configuration>  <property> <name>fs.defaultFS</name> <value>hdfs://master:9000</value> </property>  <property> <name>hadoop.tmp.dir</name> <value>/data/tmp</value> </property> </configuration>

3.2 hadoop-env.sh脚本

在主节点上，
修改~/hadoop-2.10.1/etc/hadoop/hadoop-env.sh脚本，添加环境变量：


<span class="token builtin class-name">export</span> <span class="token assign-left variable">JAVA_HOME</span><span class="token operator">=</span>/home/user/tools/jdk1.8.0_211（即JDK的安装路径） <span class="token builtin class-name">export</span> <span class="token assign-left variable">HADOOP_LOG_DIR</span><span class="token operator">=</span>/data/hadoop-logs 
<span class="token builtin class-name">export</span> <span class="token assign-left variable">JAVA_HOME</span><span class="token operator">=</span>/home/user/tools/jdk1.8.0_211（即JDK的安装路径） <span class="token builtin class-name">export</span> <span class="token assign-left variable">HADOOP_LOG_DIR</span><span class="token operator">=</span>/data/hadoop-logs 
export JAVA_HOME=/home/user/tools/jdk1.8.0_211（即JDK的安装路径） export HADOOP_LOG_DIR=/data/hadoop-logs

3.3 hdfs-site.xml文件

在主节点上，
修改~/hadoop-2.10.1/etc/hadoop/hdfs-site.xml文件：


<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>configuration</span><span class="token punctuation">></span></span>  <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>name</span><span class="token punctuation">></span></span>dfs.replication<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>name</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>value</span><span class="token punctuation">></span></span>2<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>value</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>property</span><span class="token punctuation">></span></span>  <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>name</span><span class="token punctuation">></span></span>dfs.namenode.secondary.http-address<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>name</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>value</span><span class="token punctuation">></span></span>172.16.80.21:50090<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>value</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>configuration</span><span class="token punctuation">></span></span> 
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>configuration</span><span class="token punctuation">></span></span>  <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>name</span><span class="token punctuation">></span></span>dfs.replication<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>name</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>value</span><span class="token punctuation">></span></span>2<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>value</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>property</span><span class="token punctuation">></span></span>  <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>name</span><span class="token punctuation">></span></span>dfs.namenode.secondary.http-address<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>name</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>value</span><span class="token punctuation">></span></span>172.16.80.21:50090<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>value</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>configuration</span><span class="token punctuation">></span></span> 
<configuration>  <property> <name>dfs.replication</name> <value>2</value> </property>  <property> <name>dfs.namenode.secondary.http-address</name> <value>172.16.80.21:50090</value> </property> </configuration>

3.4 mapred-env.sh脚本

在主节点上，
修改~/hadoop-2.10.1/etc/hadoop/mapred-env.sh脚本，添加环境变量：


<span class="token builtin class-name">export</span> <span class="token assign-left variable">JAVA_HOME</span><span class="token operator">=</span>/home/user/tools/jdk1.8.0_211（即JDK的安装路径） 
<span class="token builtin class-name">export</span> <span class="token assign-left variable">JAVA_HOME</span><span class="token operator">=</span>/home/user/tools/jdk1.8.0_211（即JDK的安装路径） 
export JAVA_HOME=/home/user/tools/jdk1.8.0_211（即JDK的安装路径）

3.5 mapred-site.xml文件

在主节点上的~/hadoop-2.10.1/etc/hadoop/路径下，
命令：


<span class="token function">cp</span> mapred-site.xml.template mapred-site.xml 
<span class="token function">cp</span> mapred-site.xml.template mapred-site.xml 
cp mapred-site.xml.template mapred-site.xml

修改mapred-site.xml文件：


<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>configuration</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>name</span><span class="token punctuation">></span></span>mapreduce.framework.name<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>name</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>value</span><span class="token punctuation">></span></span>yarn<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>value</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>configuration</span><span class="token punctuation">></span></span> 
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>configuration</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>name</span><span class="token punctuation">></span></span>mapreduce.framework.name<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>name</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>value</span><span class="token punctuation">></span></span>yarn<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>value</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>configuration</span><span class="token punctuation">></span></span> 
<configuration> <property> <name>mapreduce.framework.name</name> <value>yarn</value> </property> </configuration>

3.6 yarn-env.sh脚本

在主节点上，
修改~/hadoop-2.10.1/etc/hadoop/yarn-env.sh脚本，添加环境变量：


<span class="token builtin class-name">export</span> <span class="token assign-left variable">JAVA_HOME</span><span class="token operator">=</span>/home/user/tools/jdk1.8.0_211（即JDK的安装路径） <span class="token assign-left variable">YARN_LOG_DIR</span><span class="token operator">=</span><span class="token string">"/data/yarn-logs"</span> 
<span class="token builtin class-name">export</span> <span class="token assign-left variable">JAVA_HOME</span><span class="token operator">=</span>/home/user/tools/jdk1.8.0_211（即JDK的安装路径） <span class="token assign-left variable">YARN_LOG_DIR</span><span class="token operator">=</span><span class="token string">"/data/yarn-logs"</span> 
export JAVA_HOME=/home/user/tools/jdk1.8.0_211（即JDK的安装路径） YARN_LOG_DIR="/data/yarn-logs"

3.7 yarn-site.xml文件

在主节点上，
修改~/hadoop-2.10.1/etc/hadoop/yarn-site.xml文件：


<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>configuration</span><span class="token punctuation">></span></span>  <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>name</span><span class="token punctuation">></span></span>yarn.nodemanager.aux-services<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>name</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>value</span><span class="token punctuation">></span></span>mapreduce_shuffle<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>value</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span 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tag"><span class="token punctuation"><</span>value</span><span class="token punctuation">></span></span>-Xmx2560M<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>value</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>property</span><span class="token punctuation">></span></span>  <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>name</span><span class="token punctuation">></span></span>yarn.log-aggregation-enable<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>name</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>value</span><span class="token punctuation">></span></span>true<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>value</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>property</span><span class="token punctuation">></span></span>  <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>name</span><span class="token punctuation">></span></span>yarn.log-aggregation.retain-seconds<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>name</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>value</span><span class="token punctuation">></span></span>604800<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>value</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>configuration</span><span class="token punctuation">></span></span> 
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>configuration</span><span class="token punctuation">></span></span>  <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>name</span><span class="token punctuation">></span></span>yarn.nodemanager.aux-services<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>name</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>value</span><span class="token punctuation">></span></span>mapreduce_shuffle<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>value</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>property</span><span class="token punctuation">></span></span>  <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>name</span><span class="token punctuation">></span></span>yarn.resourcemanager.hostname<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>name</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>value</span><span class="token punctuation">></span></span>master<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>value</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>property</span><span class="token punctuation">></span></span>  <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>name</span><span class="token punctuation">></span></span>yarn.nodemanager.vmem-check-enabled<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>name</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>value</span><span class="token punctuation">></span></span>false<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>value</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>property</span><span class="token punctuation">></span></span>  <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>name</span><span class="token punctuation">></span></span>yarn.nodemanager.resource.cpu-vcores<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>name</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>value</span><span class="token punctuation">></span></span>6<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>value</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token 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punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>name</span><span class="token punctuation">></span></span>yarn.nodemanager.resource.memory-mb<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>name</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>value</span><span class="token punctuation">></span></span>25600<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>value</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>name</span><span class="token punctuation">></span></span>yarn.scheduler.minimum-allocation-mb<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>name</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>value</span><span class="token punctuation">></span></span>1024<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>value</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>name</span><span class="token punctuation">></span></span>yarn.scheduler.maximum-allocation-mb<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>name</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>value</span><span class="token punctuation">></span></span>8192<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>value</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>name</span><span class="token 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tag"><span class="token tag"><span class="token punctuation"></</span>name</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>value</span><span class="token punctuation">></span></span>1536<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>value</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>name</span><span class="token punctuation">></span></span>mapreduce.map.java.opts<span class="token tag"><span class="token tag"><span class="token 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punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>value</span><span class="token punctuation">></span></span>3072<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>value</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>name</span><span class="token punctuation">></span></span>mapreduce.reduce.java.opts<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>name</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>value</span><span class="token punctuation">></span></span>-Xmx2560M<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>value</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>property</span><span class="token punctuation">></span></span>  <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>name</span><span class="token punctuation">></span></span>yarn.log-aggregation-enable<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>name</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>value</span><span class="token punctuation">></span></span>true<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>value</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>property</span><span class="token punctuation">></span></span>  <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>name</span><span class="token punctuation">></span></span>yarn.log-aggregation.retain-seconds<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>name</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>value</span><span class="token punctuation">></span></span>604800<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>value</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>property</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>configuration</span><span class="token punctuation">></span></span> 
<configuration>  <property> <name>yarn.nodemanager.aux-services</name> <value>mapreduce_shuffle</value> </property>  <property> <name>yarn.resourcemanager.hostname</name> <value>master</value> </property>  <property> <name>yarn.nodemanager.vmem-check-enabled</name> <value>false</value> </property>  <property> <name>yarn.nodemanager.resource.cpu-vcores</name> <value>6</value> </property> <property> <name>yarn.scheduler.maximum-allocation-vcores</name> <value>6</value> </property>  <property> <name>yarn.nodemanager.resource.memory-mb</name> <value>25600</value> </property> <property> <name>yarn.scheduler.minimum-allocation-mb</name> <value>1024</value> </property> <property> <name>yarn.scheduler.maximum-allocation-mb</name> <value>8192</value> </property> <property> <name>yarn.app.mapreduce.am.resource.mb</name> <value>1024</value> </property> <property> <name>mapreduce.map.memory.mb</name> <value>1536</value> </property> <property> <name>mapreduce.map.java.opts</name> <value>-Xmx1024M</value> </property> <property> <name>mapreduce.reduce.memory.mb</name> <value>3072</value> </property> <property> <name>mapreduce.reduce.java.opts</name> <value>-Xmx2560M</value> </property>  <property> <name>yarn.log-aggregation-enable</name> <value>true</value> </property>  <property> <name>yarn.log-aggregation.retain-seconds</name> <value>604800</value> </property> </configuration>

3.8 slaves文件

在主节点上，
修改~/hadoop-2.10.1/etc/hadoop/slaves文件，添加其它节点的IP地址：


<span class="token number">172.16</span>.70.166 <span class="token number">172.16</span>.70.167 
<span class="token number">172.16</span>.70.166 <span class="token number">172.16</span>.70.167 
172.16.70.166 172.16.70.167

注意：需要删除slaves文件中原来localhost那一行

将配置文件复制到其它2个节点上，
命令：


<span class="token function">scp</span> -r /home/user/tools/hadoop-2.10.1/ <span class="token number">172.16</span>.70.166:<span class="token variable"><span class="token variable">`</span><span class="token builtin class-name">pwd</span><span class="token variable">`</span></span> <span class="token function">scp</span> -r /home/user/tools/hadoop-2.10.1/ <span class="token number">172.16</span>.70.167:<span class="token variable"><span class="token variable">`</span><span class="token builtin class-name">pwd</span><span class="token variable">`</span></span> 
<span class="token function">scp</span> -r /home/user/tools/hadoop-2.10.1/ <span class="token number">172.16</span>.70.166:<span class="token variable"><span class="token variable">`</span><span class="token builtin class-name">pwd</span><span class="token variable">`</span></span> <span class="token function">scp</span> -r /home/user/tools/hadoop-2.10.1/ <span class="token number">172.16</span>.70.167:<span class="token variable"><span class="token variable">`</span><span class="token builtin class-name">pwd</span><span class="token variable">`</span></span> 
scp -r /home/user/tools/hadoop-2.10.1/ 172.16.70.166:`pwd` scp -r /home/user/tools/hadoop-2.10.1/ 172.16.70.167:`pwd`

注意：此步骤仅需在第一次安装时执行
在主节点的~/hadoop-2.10.1/bin/路径下：
命令：


./hadoop namenode -format 
./hadoop namenode -format 
./hadoop namenode -format


./hdfs namenode –format 
./hdfs namenode –format 
./hdfs namenode –format

在主节点上，在~/hadoop-2.10.1/sbin/路径下，
命令：


./start-all.sh 
./start-all.sh 
./start-all.sh

在主节点上，在~/hadoop-2.10.1/sbin/路径下，
命令：


./stop-all.sh 
./stop-all.sh 
./stop-all.sh

Hadoop：http://<节点IP>:50070/
YARN：http://<节点IP>:8088/

原文链接：https://blog.csdn.net/michael_f2008/article/details/130739216

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