一、报错信息:
Starting namenodes on [master]
ERROR: Attempting to operate on hdfs namenode as rootERROR: 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 [slave1] ERROR: Attempting to operate on hdfs secondarynamenode as root ERROR: but there is no HDFS_SECONDARYNAMENODE_USER defined. Aborting operation. 二、解决办法 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
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WARNING: HADOOP_SECURE_DN_USER has been replaced by HDFS_DATANODE_SECURE_USER.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