????? ??

??? ?? Repo? ?? CentOS-6.6? ?? ??? ???? ????. Windows? Linux ?? ??? ????? ??? ??????. ?? ?? ???? JDK? ??????. Linux? JDK ?? ???? ??????. ?? ?? ??? ? ?? ??? ??? ???? ? ?? ???? ? ?? ???? ?????? ??? ?????. Hadoop ?? ???? ???? ??? http://ipnx.cn/link/8485694bae96aebc7c4fe6119599d0e0 ???.

1. Hadoop ?? ???? ??? ????? ?? ??????.

    [root@repo ~]# tar zxvf hadoop -2.6.5.tar.gz -c/opt/apps/

2. ?? ??? ?????

    # ??? ??? ?? ?? ?? ? ????.
   Hadoop_home =/opt/apps/hadoop-2.6.5 ????
   ???? ?? = $ ?? : $ hadoop_home/bin : $ hadoop_home/sbin
   [root@repo hadoop-2.6.5]#. /etc/???

3. Hadoop-env.sh, Mapred-env.sh ? Yarn-env.sh? ? ?? ?? ??? ???? Java_home? ??????.

    [root@repo hadoop]# pwd
   /opt/apps/hadoop-2.6.5/etc/hadoop
   [root@repo hadoop]# vi hadoop-env.sh
   ???? java_home =/usr/local/jdk1.8.0_73
   [root@repo hadoop]# vi mapred-env.sh
   ???? java_home =/usr/local/jdk1.8.0_73
   [root@repo hadoop]# vi yarn-env.sh
   ???? java_home =/usr/local/jdk1.8.0_73

4. ??-?? ?? ???? ???? ?? Core-Site.xml ? HDFS-Site.xml ?? ??? ??????.

    [root@repo hadoop]# vi core-site.xml
   
   
     fs.defaultfs 
    <value> hdfs : // repo : 9000 </value>
   
   
     hadoop.tmp.dir 
    <value>/var/hadoop/pseudo </value>
   
   ??>
   [root@repo hadoop]# vi hdfs-site.xml
   
   
    <name> dfs.replication </name>
    <value> 1 </value>
   
   
    <name> dfs.namenode.secondary.http-address </name>
    <value> repo : 50090 </value>
   
   ??>

5. ???? ?? ??? ???? Datanode??? ??? ?????.

    [root@repo hadoop]# vi ??
   ??

6. ?? ?? ???

    [root@repo hadoop]# hadoop namenode -format
   # ?? ??? 17/09/16 21:17:11 Info Common.Storage : ???? ????/var/hadoop/pseudo/dfs/name? ????? ????????.

7. HDFS? ??? ??????

    [root@repo hadoop]# start-dfs.sh
   [Repo]?? Namesnodes ??
   Repo : Namenode ??, /opt/apps/hadoop-2.6.5/logs/hadoop-root-namenode-repo.out? ??
   Repo : Datanode ??, /opt/apps/hadoop-2.6.5/logs/hadoop-root-datanode-repo.out? ??
   2 ? ?? ?? ?? [repo]
   Repo : secondarynamenode,/opt/apps/hadoop-2.6.5/logs/hadoop-root-secondarynamenode-repo.out? ??
   [root@repo hadoop]# start-yarn.sh
   ?? ?? ??
   ResourcEmanager? ???? /opt/Hadoop-2.7.4/Logs/Yarn-Root-Resourcemanager-repo.out? ??
   Repo : NODEMANAGER ??, /opt/Hadoop-2.7.4/logs/yarn-root-nodemanager-repo.out? ??
   [root@repo hadoop]# jps
   4368 JP
   3957 ResourcEmanager
   3512 Namenode
   3641 Datanode
   4058 NODEMANAGER
   3805 Secondarynamenode

8. ? ???? ?????? ????? ??????!

? ??? Hadoop ?? ?? ???? ??? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!