本篇文章探讨了大数据技术之HBASE 0.98版本安装，二步曲：安装HADOOP到集群，希望阅读本篇文章以后大家有所收获，帮助大家对相关内容的理解更加深入。

1、准备4台服务器
一台作为namenode
192.168.137.101 hd1
三台作为datanode
192.168.137.102 hd2
192.168.137.103 hd3
192.168.137.104 hd4
2、拉平所有服务器的时间
使用ntpdate
略
3、配置多机互信
略
4、解压hadoop
tar zxvf hadoop-2.2.0.tar.gz
5、移动hadoop到相应位置
mv hadoop-2.2.0 /home/hadoop/hadoop
6、在namenode建立相应目录
应该是755权限
mkdir /home/hadoop/hdfs
mkdir /home/hadoop/namenode
mkdir /home/hadoop/tmp
7、在datanode建立相应的目录
mkdir /home/hadoop/hdfs
mkdir /home/hadoop/tmp
8、配置hadoop
配置文件有7个：
/home/hadoop/hadoop/etc/hadoop/hadoop-env.sh
/home/hadoop/hadoop/etc/hadoop/yarn-env.sh
/home/hadoop/hadoop/etc/hadoop/slaves
/home/hadoop/hadoop/etc/hadoop/core-site.xml
/home/hadoop/hadoop/etc/hadoop/hdfs-site.xml
/home/hadoop/hadoop/etc/hadoop/mapred-site.xml
/home/hadoop/hadoop/etc/hadoop/yarn-site.xml
# /home/hadoop/hadoop/etc/hadoop/hadoop-env.sh
export JAVA_HOME=/java
export HADOOP_HOME=/home/hadoop/hadoop
# /home/hadoop/hadoop/etc/hadoop/yarn-env.sh
export JAVA_HOME=/java
# /home/hadoop/hadoop/etc/hadoop/slaves
hd2
hd3
hd4
# /home/hadoop/hadoop/etc/hadoop/core-site.xml

   fs.defaultFS
   hdfs://hd1:9000


   io.file.buffer.size
   131072


   hadoop.tmp.dir
   file:/home/hadoop/tmp


   hadoop.proxyuser.hduser.hosts
   *


   hadoop.proxyuser.hduser.groups
   *

# /home/hadoop/hadoop/etc/hadoop/hdfs-site.xml

   
       dfs.namenode.http-address
       hd1:50070
   
   
       dfs.namenode.secondary.http-address
       hd1:9001
   
   
       dfs.namenode.name.dir
       file:/data/namenode
   
   
       dfs.datanode.data.dir
       file:/data/hdfs
   
   
       dfs.replication
       3
   
   
       dfs.webhdfs.enabled
       true
   
   
       dfs.support.append
       true
   
   
       dfs.support.broken.append
       true
   

# /home/hadoop/hadoop/etc/hadoop/mapred-site.xml

   mapreduce.framework.name
   yarn


   mapreduce.jobhistory.address
   hd1:10020


   mapreduce.jobhistory.webapp.address
   hd1:19888

# /home/hadoop/hadoop/etc/hadoop/yarn-site.xml

   yarn.nodemanager.aux-services
   mapreduce_shuffle


   yarn.nodemanager.aux-services.mapreduce.shuffle.class
   org.apache.hadoop.mapred.ShuffleHandler


   yarn.resourcemanager.address
   hd1:8032


   yarn.resourcemanager.scheduler.address
   hd1:8030


   yarn.resourcemanager.resource-tracker.address
   hd1:8031


   yarn.resourcemanager.admin.address
   hd1:8033


   yarn.resourcemanager.webapp.address
   hd1:8088

8、拷贝hadoop到所有datanode
scp -r /home/hadoop/hadoop/ hd2:/home/hadoop/
scp -r /home/hadoop/hadoop/ hd3:/home/hadoop/
scp -r /home/hadoop/hadoop/ hd4:/home/hadoop/
9、格式化namenode
hadoop namenode -format
10、启动dfs
start-dfs.sh    

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