http://hadoop0:50070
http://hadoop0:8088
http://hadoop0:9000
http://hadoop0:19888
1.关闭防火墙(自己搜:ubuntu是ufw disable)
2.将hadoop配置文件中localhost改为ip地址,重启hadoop
3.如果http://hadoop0:19888不能访问,先启动历时服务mr-jobhistory-daemon.sh start
historyserver