大数据--Hadoop2.0环境安装

 Hadoop源码包下载

http://mirror.bit.edu.cn/apache/hadoop/common

1. 集群环境

Master 172.16.11.97

Slave1 172.16.11.98

Slave2 172.16.11.99

2. 下载安装包

#Master

wget http://mirror.bit.edu.cn/apache/hadoop/common/hadoop-2.8.2/hadoop-2.8.2.tar.gz

tar zxvf hadoop-2.8.2.tar.gz

3. 修改Hadoop配置文件

#Master

cd hadoop-2.8.2/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://172.16.11.97:9000</value>

</property>

<property>

<name>hadoop.tmp.dir</name>

<value>file:/usr/local/src/hadoop-2.8.2/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/src/hadoop-2.8.2/dfs/name</value>

</property>

<property>

<name>dfs.datanode.data.dir</name>

<value>file:/usr/local/src/hadoop-2.8.2/dfs/data</value>

</property>

<property>

<name>dfs.replication</name>

<value>3</value>

</property>

</configuration>

vim mapred-site.xml  这个才是vim mapred-site.xml.template 

<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/src/hadoop-2.8.2/tmp

mkdir -p /usr/local/src/hadoop-2.8.2/dfs/name

mkdir -p /usr/local/src/hadoop-2.8.2/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-2.8.2root@slave1:/usr/local/src/hadoop-2.8.2

scp -r /usr/local/src/hadoop-2.8.2root@slave2:/usr/local/src/hadoop-2.8.2

6. 启动集群

#Master

#初始化Namenode

hadoop namenode -format

#启动集群

./sbin/start-all.sh

6. 集群状态

jps

#Master

#Slave1

#Slave2

7.监控网页

http://master:8088

8. 操作命令

#和Hadoop1.0操作命令是一样的

9. 关闭集群

./sbin/hadoop stop-all.sh