超详细的Hadoop2配置详解

日期：2021-06-03 栏目：程序人生浏览：次

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

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=http://www.likecs.com/usr/local/src/jdk1.8.0_152

vim yarn-env.sh
export JAVA_HOME=http://www.likecs.com/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> <property> <name>mapreduce.framework.name</name> <value>yarn</value> </property> </configuration>

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>master:8032</value> </property> <property> <name>yarn.resourcemanager.scheduler.address</name> <value>master:8030</value> </property> <property> <name>yarn.resourcemanager.resource-tracker.address</name> <value>master:8035</value> </property> <property> <name>yarn.resourcemanager.admin.address</name> <value>master:8033</value> </property> <property> <name>yarn.resourcemanager.webapp.address</name> <value>master:8088</value> </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=http://www.likecs.com/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 root@slave1:/usr/local/src/hadoop-2.8.4
scp -r /usr/local/src/hadoop-2.8.4 root@slave2:/usr/local/src/hadoop-2.8.4

6. 启动集群

Master 初始化Namenode

hadoop namenode -format