使用root配置的hadoop启动时报错

概述一、报错信息： 　　Starting namenodes on [master]         ERROR: Attempting to operate on hdfs namenode as root                  ERROR: but there is no HDFS_NAMENODE_USER defined. Aborting operation.          @H_404_0@ @H_404_0@

一、报错信息：

　　Starting namenodes on [master]

@H_404_0@         ERROR: Attempting to operate on hdfs namenode as root
        
        ERROR: but there is no HDFS_nameNODE_USER defined. Aborting operation.
        
        Starting datanodes @H_404_0@         ERROR: Attempting to operate on hdfs datanode as root
        
        ERROR: but there is no HDFS_DatanODE_USER defined. Aborting operation. @H_404_0@         Starting secondary namenodes [slave1] @H_404_0@         ERROR: Attempting to operate on hdfs secondarynamenode as root @H_404_0@         ERROR: but there is no HDFS_SECONDARYnameNODE_USER defined. Aborting operation. @H_404_0@ 二、解决办法 @H_404_0@ 在/hadoop/sbin路径下：  @H_404_0@ 将 start-dfs.sh，stop-dfs.sh两个文件顶部添加以下参数 @H_404_0@

HDFS_DatanODE_USER=root
HDFS_DatanODE_SECURE_USER=hdfs
HDFS_nameNODE_USER=root
HDFS_SECONDARYnameNODE_USER=root

如下图：

start-yarn.sh，stop-yarn.sh顶部也添加以下参数
YARN_RESOURCEMANAGER_USER=root
HADOOP_SECURE_DN_USER=yarn
YARN_NODEMANAGER_USER=root

 如下图：

 

三、添加完启动遇到如下警告：

WARNING: HADOOP_SECURE_DN_USER has been replaced by HDFS_DatanODE_SECURE_USER.

需要将第二句：HADOOP_SECURE_DN_USER=hdfs  改为 HDFS_DatanODE_SECURE_USER=hdfs  

@H_404_0@ 总结

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