伪分布式部署2018-05-17

1、解压

tar -xzvf    hadoop-2.8.1.tar.gz

2、配置环境变量、生效

vi /etc/profile

export HADOOP_HOME=/opt/software/hadoop-2.8.1

export PATH=$HADOOP_HOME/bin:$PATH

source    /etc/profile

3、配置core-site文件

#cd   /opt/software/hadoop-2.8.1/etc/hadoop

vi    core_site.xml

4、配置hdfs-site.xml文件

vi    hdfs-site.xml

5、修改hadoop-env.sh中java_home

# The java implementation to use.

export JAVA_HOME=/usr/java/jdk1.8.0_45

6、格式化hdfs

格式化之前先将ip和机器名添加至hosts文件

vi /etc/hosts

192.168.137.130  hadoop001

[root@hadoop001 ~]# hdfs namenode -format

18/05/17 19:57:05 INFO util.ExitUtil: Exiting with status 0

18/05/17 19:57:05 INFO namenode.NameNode: SHUTDOWN_MSG:

/************************************************************

SHUTDOWN_MSG: Shutting down NameNode at hadoop001/192.168.137.130

************************************************************/

7、启动

[root@hadoop001 hadoop-2.8.1]# cd sbin

[root@hadoop001 sbin]# ./start-dfs.sh

8、测试

[root@hadoop001 sbin]# jps

21946 SecondaryNameNode

22059 Jps

21788 DataNode

21662 NameNode