启动Hadoop集群时出错

Question

chown: changing ownership of `/usr/local/hadoop/libexec/../logs': Operation not permitted 
starting namenode, logging to /usr/local/hadoop/libexec/../logs/hadoop-hadoop-namenode-ayush-PC.out 
/usr/local/hadoop/bin/hadoop-daemon.sh: line 135:  /usr/local/hadoop/libexec/../logs/hadoop-hadoop-namenode-ayush-PC.out: Permission denied 
head: cannot open `/usr/local/hadoop/libexec/../logs/hadoop-hadoop-namenode-ayush- PC.out' for reading: No such file or directory 
localhost: chown: changing ownership of `/usr/local/hadoop/libexec/../logs': Operation not permitted 
localhost: starting datanode, logging to /usr/local/hadoop/libexec/../logs/hadoop-hadoop-datanode-ayush-PC.out 
localhost: /usr/local/hadoop/bin/hadoop-daemon.sh: line 135:  /usr/local/hadoop/libexec/../logs/hadoop-hadoop-datanode-ayush-PC.out: Permission denied 
localhost: head: cannot open `/usr/local/hadoop/libexec/../logs/hadoop-hadoop-datanode- ayush-PC.out' for reading: No such file or directory 
localhost: chown: changing ownership of `/usr/local/hadoop/libexec/../logs': Operation not permitted 
localhost: starting secondarynamenode, logging to /usr/local/hadoop/libexec/../logs/hadoop-hadoop-secondarynamenode-ayush-PC.out 
localhost: /usr/local/hadoop/bin/hadoop-daemon.sh: line 135: /usr/local/hadoop/libexec/../logs/hadoop-hadoop-secondarynamenode-ayush-PC.out: Permission denied 
localhost: head: cannot open `/usr/local/hadoop/libexec/../logs/hadoop-hadoop-secondarynamenode-ayush-PC.out' for reading: No such file or directory 
chown: changing ownership of `/usr/local/hadoop/libexec/../logs': Operation not permitted 
starting jobtracker, logging to /usr/local/hadoop/libexec/../logs/hadoop-hadoop-jobtracker-ayush-PC.out 
/usr/local/hadoop/bin/hadoop-daemon.sh: line 135: /usr/local/hadoop/libexec/../logs/hadoop-hadoop-jobtracker-ayush-PC.out: Permission denied 
head: cannot open `/usr/local/hadoop/libexec/../logs/hadoop-hadoop-jobtracker-ayush-PC.out' for reading: No such file or directory 
localhost: chown: changing ownership of `/usr/local/hadoop/libexec/../logs': Operation not permitted 
localhost: starting tasktracker, logging to /usr/local/hadoop/libexec/../logs/hadoop-hadoop-tasktracker-ayush-PC.out 
localhost: /usr/local/hadoop/bin/hadoop-daemon.sh: line 135: /usr/local/hadoop/libexec/../logs/hadoop-hadoop-tasktracker-ayush-PC.out: Permission denied 
localhost: head: cannot open `/usr/local/hadoop/libexec/../logs/hadoop-hadoop-tasktracker-ayush-PC.out' for reading: No such file or directory 

我收到此错误。 我读过很多人都会遇到这个错误，但我一直无法找到解决方案。谁能帮忙？

Answer 1

做一个单独的用户 - hduser，总是recommened

- do chown -R 755 /usr/local/hadoop 
- when creating tmp paths like /app/hadoop/tmp, apply the same settings as above 

希望这将解决这个问题。

问题涉及到许可，不Hadoop的

Answer 2

下面是2点非常有用的建议：

1. 这是好事，检查是否HADOOP_HOME和JAVA_HOME在 .bashrc文件中设置。有时，在启动hadoop集群时，不设置这些环境变量 也可能导致错误。

2. 通过浏览/ usr/local/hadoop/logs目录中生成的日志文件 来调试错误也很有用。