ERROR: but there is no YARN_RESOURCEMANAGER_USER defined. Aborting operation.

将start-dfs.sh，stop-dfs.sh两个文件顶部添加以下参数

HDFS_NAMENODE_USER=root

HDFS_DATANODE_USER=root

HDFS_SECONDARYNAMENODE_USER=root

YARN_RESOURCEMANAGER_USER=root

YARN_NODEMANAGER_USER=root

 

 start-yarn.sh，stop-yarn.sh顶部也需添加以下

YARN_RESOURCEMANAGER_USER=root

HADOOP_SECURE_DN_USER=yarn

YARN_NODEMANAGER_USER=root