Hadoop集群启动报错

版本：3.2.3

报错信息：

[root@hadoop01 current]# start-dfs.sh
Starting namenodes on [hadoop01]
ERROR: Attempting to operate on hdfs namenode as root
ERROR: but there is no HDFS_NAMENODE_USER defined. Aborting operation.
Starting datanodes
ERROR: Attempting to operate on hdfs datanode as root
ERROR: but there is no HDFS_DATANODE_USER defined. Aborting operation.
Starting secondary namenodes [hadoop02]
ERROR: Attempting to operate on hdfs secondarynamenode as root
ERROR: but there is no HDFS_SECONDARYNAMENODE_USER defined. Aborting operation.

 

解决方法：

         在/hadoop/sbin路径下：
         将start-dfs.sh，stop-dfs.sh两个文件顶部添加以下参数
              HDFS_DATANODE_USER=root
              HADOOP_SECURE_DN_USER=hdfs
              HDFS_NAMENODE_USER=root
              HDFS_SECONDARYNAMENODE_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