localhost: /usr/local/hadoop/sbin/hadoop-daemon.sh: line 166: /usr/local/hadoop/logs/hadoop-hadoop-datanode-hadoop.out: Permission denied
localhost: /usr/local/hadoop/sbin/hadoop-daemon.sh: line 167: /usr/local/hadoop/logs/hadoop-hadoop-datanode-hadoop.out: Permission denied
当你出现以上问题时，有可能是权限不足，尝试用root用户启动。