hadoop集群，远程拷贝文件

[root@node1 hadoop]# scp -r /usr/local/jdk node2://usr/local/

[root@node1 hadoop]# scp -r /usr/local/jdk node3://usr/local/

[root@node1 hadoop]# scp -r /usr/local/hadoop node2://usr/local/ 

[root@node1 hadoop]# scp -r /usr/local/hadoop node3://usr/local/ 

[root@node1 hadoop]# scp /etc/profile node2://etc/

[root@node1 hadoop]# scp /etc/profile node3://etc/

3台主机，分别执行

source /etc/profile

验证hadoop       格式化

[root@node1 hadoop]# hadoop namenode -format

[root@node1 hadoop]# start-all.sh

jps查看进程

浏览器访问

http://node1:50070
http://node1:50070/dfshealth.html#tab-overview