这里我们安装三台的集群：集群ip：192.168.157.132-134

master：192.168.157.132

slaves：192.168.157.133-134

hbase 依赖zookeeper自行安装。

1、配置ssh 无密码 免登陆

1>安装ssh：132 、134、 133

 yum install openssh-clients

2> 配置无密码免登陆：132 、134、 133

      [root@localhost ~]# ssh-keygen -t rsa
       一路回车
      [root@localhost ~]# cd /root/.ssh/
      [root@localhost .ssh]# cat id_rsa.pub >> authorized_keys
      [root@localhost .ssh]# scp authorized_keys root@192.168.157.132:/root/.ssh
      [root@localhost .ssh]# scp authorized_keys root@192.168.157.133:/root/.ssh
      [root@localhost .ssh]# scp authorized_keys root@192.168.157.134:/root/.ssh

修改权限三台

      [root@localhost ~]# chmod 700 .ssh/
      [root@localhost ~]# chmod 600 ~/.ssh/authorized_keys 

2、修改机器名称

1> 通过命令修改：重启失效

     [root@localhost .ssh]# hostname dev-157-132
     [root@localhost .ssh]# hostname
      dev-157-132

  [root@localhost .ssh]# vim /etc/sysconfig/network
    NETWORKING=yes
    NETWORKING_IPV6=no
    HOSTNAME=dev-157-132
    GATEWAY=192.168.248.254

 [root@localhost .ssh]# vim /etc/hosts

        127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
        ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
       192.168.157.132 dev-157-132
       192.168.157.133 dev-157-133
       192.168.157.134 dev-157-134

3、关闭防火墙（三台）

   service iptables stop

4、安装JDK 略...

5、安装hadoop2.2.0

 [root@dev-157-132 servers]# tar -xf hadoop-2.2.0.tar.gz
 [root@dev-157-132 servers]# cd hadoop-2.2.0/etc/hadoop

 [root@dev-157-132 hadoop]# vim hadoop-env.sh
 export JAVA_HOME=/export/servers/jdk1.6.0_25 （这java_home）
     其他默认

 [root@dev-157-132 hadoop]# vim core-site.xml
     
          
      fs.defaultFS
        hdfs://dev-157-132:9100
      

        
       hadoop.tmp.dir
          /export/servers/hadoop-2.2.0/data/hadoop_tmp
        
 
 
     io.native.lib.available
      true
      
 

   
   
           mapreduce.framework.name
            yarn
   
    

[root@dev-157-132 hadoop]# vim yarn-site.xml

       yarn.resourcemanager.resource-tracker.address
       dev-157-132:8031
       
 
 
 yarn.resourcemanager.scheduler.address
  dev-157-132:8030
 
 
  
          yarn.resourcemanager.scheduler.class
          org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler
         
   
   
           yarn.resourcemanager.address
           dev-157-132:8032
           the host is the hostname of the ResourceManager and the port is the port on
             which the clients can talk to the Resource Manager. 
   

 [root@dev-157-132 hadoop]# vim hdfs-site.xml
  
  dfs.namenode.name.dir
   file:/export/servers/hadoop-2.2.0/data/nn


  dfs.datanode.data.dir
    file:/export/servers/hadoop-2.2.0/data/dfs


  dfs.permissions
   false

6>修改slaves

[root@dev-157-132 hadoop]# vim slaves
                dev-157-133
                dev-157-134

 scp -r hadoop-2.2.0  root@192.168.157.133:/export/servers
 scp -r hadoop-2.2.0  root@192.168.157.134:/export/servers

8> 设置三台环境变量

 [root@dev-157-132 hadoop]# vim /etc/profile
export HADOOP_HOME=/export/servers/hadoop-2.2.0
export HADOOP_CONF_DIR=/export/servers/hadoop-2.2.0/etc/hadoop
export PATH=$JAVA_HOME/bin:$HADOOP_HOME/bin:$HADOOP_HOME/sbin:$PATH
 [root@dev-157-132 hadoop]# source /etc/profile

hadoop namenode -format

6 、启动hadoop 在 master