错误如下所示;
[root@localhost sbin]# start-all.sh Starting namenodes on [192.168.71.129] 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 [192.168.71.129] 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.
解决办法：在环境变量中添加以下配置 vim /etc/profile
export HDFS_NAMENODE_USER=root export HDFS_DATANODE_USER=root export HDFS_SECONDARYNAMENODE_USER=root export YARN_RESOURCEMANAGER_USER=root export YARN_NODEMANAGER_USER=root
最后更新环境变量 source /etc/profile。