1)启动名称节点
Hadoop-daemon.sh start namenode
hadoop-daemons.sh start datanode slave
netstat -anop | grep 500
yarn-daemon.sh start resourcemanager
bin/yarn-daemons.sh start nodemanager
hadoop-daemon.sh stop datanode
重新开启
hadoop-daemon.sh start datanode
原文:http://13153175.blog.51cto.com/13143175/1952930