Hadoop2.0安装

0. 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

fs.defaultFS

hdfs://172.16.11.97:9000

hadoop.tmp.dir

file:/usr/local/src/hadoop-2.8.2/tmp

vim hdfs-site.xml

dfs.namenode.secondary.http-address

master:9001

dfs.namenode.name.dir

file:/usr/local/src/hadoop-2.8.2/dfs/name

dfs.datanode.data.dir

file:/usr/local/src/hadoop-2.8.2/dfs/data

dfs.repliction

3

vim mapred-site.xml

mapreduce.framework.name

yarn

vim yarn-site.xml

yarn.nodemanager.aux-services

mapreduce_shuffle

yarn.nodemanager.aux-services.mapreduce.shuffle.class

org.apache.hadoop.mapred.ShuffleHandler

yarn.resourcemanager.address

master:8032

yarn.resourcemanager.scheduler.address

master:8030

yarn.resourcemanager.resource-tracker.address

master:8035

yarn.resourcemanager.admin.address

master:8033

yarn.resourcemanager.webapp.address

master:8088

#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-2.8.2 root@slave1: /usr/local/src/hadoop-2.8.2

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