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start-yarn.sh出错 ERROR: but there is no YARN_RESOURCEMANAGER_USER defined. Aborting operation._starting resourcemanager error: attempting to oper
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start-dfs.sh错误
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 [iz2ze49dsj767ouqcmxlqaz]
ERROR: Attempting to operate on hdfs secondarynamenode as root
ERROR: but there is no HDFS_SECONDARYNAMENODE_USER defined. Aborting operation.
（公众用户定义而造成的）因此编辑启动和关闭
$ vim sbin/start-dfs.sh
$ vim sbin/stop-dfs.sh
顶部空白处
HDFS_DATANODE_USER=root
HADOOP_SECURE_DN_USER=hdfs
HDFS_NAMENODE_USER=root
HDFS_SECONDARYNAMENODE_USER=root
start-yarn.sh出错
Starting resourcemanager ERROR: Attempting to operate on yarn resourcemanager as root ERROR: but there is no YARN_RESOURCEMANAGER_USER defined. Aborting operation. Starting nodemanagers ERROR: Attempting to operate on yarn nodemanager as root ERROR: but there is no YARN_NODEMANAGER_USER defined. Aborting operation.
是因为共有用户定义造成的，所以分别编辑开始和关闭脚本
$ vim sbin/start-yarn.sh
$ vim sbin/stop-yarn.sh
顶部添加
YARN_RESOURCEMANAGER_USER=root
HADOOP_SECURE_DN_USER=yarn
YARN_NODEMANAGER_USER=root
