• 环境：3台CentOS7.4  
• xiao1 :192.168.199.147  xiao2:192.168.199.148   xiao3:192.168.199.149 

1、设置主机名

[root@localhost ~]# hostnamectl set-hostname xiao1
[root@localhost ~]# hostnamectl set-hostname xiao2
[root@localhost ~]# hostnamectl set-hostname xiao3

2、设置host

# vim /etc/hosts
192.168.199.147 xiao1
192.168.199.148 xiao2
192.168.199.149 xiao3

3、安装jdk

[root@xiao1 src]# tar xf jdk-10.0.2_linux-x64_bin.tar.gz -C ../

[root@xiao1 src]# vim /etc/profile
export JAVA_HOME=/usr/local/jdk-10.0.2
export PATH=$PATH:$JAVA_HOME:$JAVA_HOME/bin:$JAVA_HOME/lib

[root@xiao1 src]# source /etc/profile

[root@xiao1 src]# java -version
java version "10.0.2" 2018-07-17 Java(TM) SE Runtime Environment 18.3 (build 10.0.2+13) Java HotSpot(TM) 64-Bit Server VM 18.3 (build 10.0.2+13, mixed mode)

4、创建hadoop用户

[root@xiao1 src]# useradd hadoop

[root@xiao1 src]# passwd hadoop
 Changing password for user hadoop.
 New password:
 BAD PASSWORD: No password supplied
 Retype new password:

5、切换用户

[root@xiao1 src]# su - hadoop

6、免密登陆

[hadoop@xiao1 ~]$ ssh-keygen
[hadoop@xiao1 ~]$ ssh-copy-id xiao1
[hadoop@xiao1 ~]$ ssh-copy-id xiao2
[hadoop@xiao1 ~]$ ssh-copy-id xiao3

7、配置环境变量

[hadoop@xiao1 ~]$ vim .bash_profile
 export HADOOP_HOME=/home/hadoop/hadoop-3.1.1
 export PATH=$PATH:$HADOOP_HOME:$HADOOP_HOME/bin:$HADOOP_HOME/lib:$HADOOP_HOME/share:$HADOOP_HOME/sbin

[hadoop@xiao1 ~]$ source .bash_profile

8、配置hadoop

[hadoop@xiao1 ~]$ cd hadoop-3.1.1/etc/hadoop/

[hadoop@xiao1 hadoop]$ vim hadoop-env.sh
 export JAVA_HOME=/usr/local/jdk-10.0.2

[hadoop@xiao1 hadoop]$ vim core-site.xml
 <configuration>
 <property>
 <name>fs.defaultFS</name>
 <value>hdfs://xiao1:9000</value>
 </property>
 <property>
 <name>hadoop.tmp.dir</name>
 <value>file:/home/hadoop/tmp</value>
 </property>
 </configuration>

[hadoop@xiao1 hadoop]$ vim hdfs-site.xml
 <configuration>
 <property>
 <name>dfs.namenode.name.dir</name>
 <value>/home/hadoop/name</value>
 </property>
 <property>
 <name>dfs.datanode.data.dir</name>
 <value>file:/home/hadoop/data</value>
 </property>
 <property>
 <name>dfs.replication</name>
 <value>2</value>
 </property>
 <property>
 <name>dfs.webhdfs.enabled</name>
 <value>true</value>
 </property>
 </configuration>

[hadoop@xiao1 hadoop]$ vim mapred-site.xml
 <configuration>
 <property>
 <name>mapreduce.framework.name</name>
 <value>yarn</value>
 </property>
 <property>
 <name>mapreduce.task.io.sort.factor</name>
 <value>100</value>
 </property>
 <property>
 <name>mapreduce.reduce.shuffle.parallelcopies</name>
 <value>50</value>
 </property>
 <property>
 <name>mapreduce.jobhistory.address</name>
 <value>0.0.0.0:10020</value>
 </property>
 <property>
 <name>mapreduce.jobhistory.webapp.address</name>
 <value>0.0.0.0:19888</value>
 </property>
 </configuration>

[hadoop@xiao1 hadoop]$ vim yarn-site.xml
 <configuration>
 <property>
 <name>yarn.nodemanager.aux-services</name>
 <value>mapreduce_shuffle</value>
 </property>
 <property>
 <name>yarn.nodemanager.aux-services.mapreduce.shuffle.class</name>
 <value>org.apache.hadoop.mapred.ShuffleHandler</value>
 </property>
 <property>
 <name>yarn.resourcemanager.address</name>
 <value>xiao1:8032</value>
 </property>
 <property>
 <name>yarn.resourcemanager.scheduler.address</name>
 <value>xiao1:8030</value>
 </property>
 <property>
 <name>yarn.resourcemanager.resource-tracker.address</name>
 <value>xiao1:8031</value>
 </property>
 <property>
 <name>yarn.resourcemanager.admin.address</name>
 <value>xiao1:8033</value>
 </property>
 <property>
 <name>yarn.resourcemanager.webapp.address</name>
 <value>xiao1:8088</value>
 </property>
 <property>
 <name>yarn.application.classpath</name>
 <value>/home/hadoop/hadoop-3.1.1/etc/hadoop:/home/hadoop/hadoop-3.1.1/share/hadoop/common/lib/*:/home/hadoop/hadoop-3.1.1/share/hadoop/common/*:/home/hadoop/hadoop-3.1.1/share/hadoop/hdfs:/home/hadoop/hadoop-3.1.1/share/hadoop/hdfs/lib/*:/home/hadoop/hadoop-3.1.1/share/hadoop/hdfs/*:/home/hadoop/hadoop-3.1.1/share/hadoop/mapreduce/*:/home/hadoop/hadoop-3.0.0/share/hadoop/yarn:/home/hadoop/hadoop-3.1.1/share/hadoop/yarn/lib/*:/home/hadoop/hadoop-3.1.1/share/hadoop/yarn/* </value>
 </property>
 <!-- Site specific YARN configuration properties -->
 </configuration>

9、复制到其它节点

[hadoop@xiao1 ~]$ scp -r hadoop-3.1.1 xiao2:
 [hadoop@xiao1 ~]$ scp -r hadoop-3.1.1 xiao3:

10、格式化文件系统

[hadoop@xiao1 ~]$ hdfs namenode -format
 2018-08-23 22:29:48,345 INFO common.Storage: Storage directory /home/hadoop/data has been successfully formatted.

11、启动

[hadoop@xiao1 ~]$ start-all.sh

12、查看服务

[hadoop@xiao2 ~]$ jps
 11841 Jps
 11695 DataNode
 11807 NodeManager

[hadoop@xiao1 ~]$ jps
 3908 NameNode
 4756 Jps
 4220 SecondaryNameNode
 4030 DataNode