linux安装hadoop 1.2.1

我的服务器里面会装很多东西,所以我在跟目录下面建立了个doc文档文件夹

1.创建存放软件的doc文件夹

mkdir doc

2.进去doc文件夹进行下载hadoop-1.2.1资源包或者到我的百度云下载 地址http://pan.baidu.com/s/1gdSws07

cd doc
wget http://mirror.bit.edu.cn/apache/hadoop/common/hadoop-1.2.1/hadoop-1.2.1.tar.gz

3.下载完毕进行解压hadoop-1.2.1.tar.gz

tar -zxf hadoop-1.2.1.tar.gz

4.这个时候在doc目录应该有个hadoop-1.2.1文件夹,这个是我们存放软件包的目录,一般我们安装一个服务会单独的创建一个相关的文件夹,我的hadoop服务是装在

/usr/local/hadoop/hadoop-1.2.1这个目录里面的,所以我们把doc里面的hadoop-1.2.1复制到/usr/local/hadoop目录
#进入usr下面的local文件夹
cd /usr/local
#创建hadoop文件夹
mkdir hadoop
#转移hadoop-1.2.1文件夹到hadoop文件夹中
mv /doc/hadoop-1.2.1 /usr/local/hadoop

5.ok 现在开到配置hadoop的配置文件

配置hadoop-env.sh文件

使用echo命令看JAVA_HOME，jdk的安装目录

[root@iZ94j7ahvuvZ conf]# echo $JAVA_HOME 
/usr/local/java/jdk1.7.0

修改hadoop-env.sh的JAVA_HOME信息

进入hadoop的conf文件夹

cd /usr/local/hadoop/hadoop-1.2.1/conf
vi hadoop-env.sh

完善 JAVA_HOME属性  

export JAVA_HOME=/usr/local/java/jdk1.7.0(自己的JDK目录)

6.配置文件core-site.xml

  
       hadoop.tmp.dir
       /hadoop
  
 
  
     dfs.name.dir
     /hadoop/name
  
 
  
     fs.default.name
     hdfs://localhost:9000
  

 

 

7.配置hdfs-site.xml文件

    
        dfs.data.dir
        /hadoop/data
    

 

 

8.配置mapred-site.xml文件

    
        mapred.job.tracker
        localhost:9001
    

 

 

9.配置hadoop的环境变量 /etc/profile文件

 

cd /etc
在下面加入
export HADOOP_HOME=/usr/local/hadoop/hadoop-1.2.1
export PATH=$PATH:/usr/local/java/jdk1.7.0/bin:$HADOOP_HOME/bin(这里的JDK路径按照自己的JDK路径)

HADOOP_HOME在上面 不然好像生效了也没用

保存退出

dadoop

如果有像敲完java后的提示 那么则成功

[root@iZ94j7ahvuvZ conf]# hadoop
Usage: hadoop [--config confdir] COMMAND
where COMMAND is one of:
  namenode -format     format the DFS filesystem
  secondarynamenode    run the DFS secondary namenode
  namenode             run the DFS namenode
  datanode             run a DFS datanode
  dfsadmin             run a DFS admin client
  mradmin              run a Map-Reduce admin client
  fsck                 run a DFS filesystem checking utility
  fs                   run a generic filesystem user client
  balancer             run a cluster balancing utility
  oiv                  apply the offline fsimage viewer to an fsimage
  fetchdt              fetch a delegation token from the NameNode
  jobtracker           run the MapReduce job Tracker node
  pipes                run a Pipes job
  tasktracker          run a MapReduce task Tracker node
  historyserver        run job history servers as a standalone daemon
  job                  manipulate MapReduce jobs
  queue                get information regarding JobQueues
  version              print the version
  jar             run a jar file
  distcp   copy file or directories recursively
  distcp2   DistCp version 2
  archive -archiveName NAME -p  *  create a hadoop archive
  classpath            prints the class path needed to get the
                       Hadoop jar and the required libraries
  daemonlog            get/set the log level for each daemon
 or
  CLASSNAME            run the class named CLASSNAME

10.启动hadoop

 

cd /usr/local/hadoop/hadoop-1.2.1/bin
./start-all.sh
#敲完需要输入3次密码 如下提示则成功

[root@iZ94j7ahvuvZ bin]# ./start-all.sh 
namenode running as process 1341. Stop it first.
root@localhost's password: 
localhost: starting datanode, logging to /usr/local/hadoop/hadoop-1.2.1/libexec/../logs/hadoop-root-datanode-iZ94j7ahvuvZ.out
root@localhost's password: 
localhost: starting secondarynamenode, logging to /usr/local/hadoop/hadoop-1.2.1/libexec/../logs/hadoop-root-secondarynamenode-iZ94j7ahvuvZ.out
starting jobtracker, logging to /usr/local/hadoop/hadoop-1.2.1/libexec/../logs/hadoop-root-jobtracker-iZ94j7ahvuvZ.out
root@localhost's password: 
localhost: starting tasktracker, logging to /usr/local/hadoop/hadoop-1.2.1/libexec/../logs/hadoop-root-tasktracker-iZ94j7ahvuvZ.out