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1.关闭防火墙、禁用SELinux

export JAVA_HOME=/opt/modules/jdk1.7.0_25

core-site.xml

               
                    
     
      fs.defaultFS
                     
     
      hdfs://hadoop-yarn.cloudyhadoop.com:8020
                 
                
                    
     
      hadoop.tmp.dir
                     
     
      /opt/modules/hadoop-2.6.5/data/tmp
                 
    
   

hdfs-site.xml

               
                    
     
      dfs.replication
                     
     
      1
                 
    
   

yarn-site.xml

               
                    
     
      yarn.nodemanager.aux-services
                     
     
      mapreduce_shuffle
                 
    
   

mapred-site.xml

               
                    
     
      mapreduce.framework.name
                     
     
      yarn
                 
    
   

7.启动命令

[root@hadoop-yarn hadoop-2.6.5]# bin/hdfs namenode -format

启动node

[root@hadoop-yarn hadoop-2.6.5]# sbin/hadoop-daemon.sh start namenode        [root@hadoop-yarn hadoop-2.6.5]# sbin/hadoop-daemon.sh start datanode        [root@hadoop-yarn hadoop-2.6.5]# sbin/hadoop-daemon.sh start secondarynamenode

显示当前所有java进程

[root@hadoop-yarn hadoop-2.6.5]# jps

查看详细信息

[root@hadoop-yarn hadoop-2.6.5]# ps -ef | grep java

8.通过web界面查看

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