將start-dfs.sh，stop-dfs.sh兩個文件頂部添加以下參數
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頂部也需添加以下
YARN_RESOURCEMANAGER_USER=root
HADOOP_SECURE_DN_USER=yarn
YARN_NODEMANAGER_USER=root