hadoop安装

1.下载解压：hadoop-2.7.7.tar

2.修改配置文件etc/hadoop/hadoop-env.sh

export JAVA_HOME=/usr/java/latest

3.尝试命令

$ bin/hadoop

4.伪分布式配置

etc/hadoop/core-site.xml:

    
        fs.defaultFS
        hdfs://localhost:7000
    

etc/hadoop/hdfs-site.xml:

    
        dfs.replication
        1
    

5.设置ssh

ssh localhost

6.格式化

bin/hdfs namenode -format

7.Start NameNode daemon and DataNode daemon:

sbin/start-dfs.sh

8.浏览器查看localhost:50070