在Hadoop全分布构建中，常常会出现以下错误
[root@Hadoopc1 hadoop]# start-all.sh Starting namenodes on [192.168.13.245] 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 [Hadoopc1.localdomain] ERROR: Attempting to operate on hdfs secondarynamenode as root ERROR: but there is no HDFS_SECONDARYNAMENODE_USER defined. Aborting operation. 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.
这些错误都是因为缺少用户定义导致的
解决
在 vi sbin/start-dfs.sh
vi sbin/stop-dfs.sh
添加
HDFS_DATANODE_USER=root HADOOP_SECURE_DN_USER=hdfs HDFS_NAMENODE_USER=root HDFS_SECONDARYNAMENODE_USER=root
在
vi sbin/start-yarn.sh
vi sbin/stop-yarn.sh
添加
YARN_RESOURCEMANAGER_USER=root HADOOP_SECURE_DN_USER=yarn YARN_NODEMANAGER_USER=root
再执行就可以了
