错误一览
- sbin/start-yarn.sh 执行失败
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.
- sbin/stop-yarn.sh 执行失败
Stopping nodemanagers
ERROR: Attempting to operate on yarn nodemanager as root
ERROR: but there is no YARN_NODEMANAGER_USER defined. Aborting operation.
Stopping resourcemanager
ERROR: Attempting to operate on yarn resourcemanager as root
ERROR: but there is no YARN_RESOURCEMANAGER_USER defined. Aborting operation.
解决方案
这两个文件在 hadoop-3.1.2/sbin/ 中，分别在 start-yarn.sh 和 stop-yarn.sh 中添加如下内容
YARN_RESOURCEMANAGER_USER=hadoop
HADOOP_SECURE_DN_USER=yarn
YARN_NODEMANAGER_USER=hadoop