Hadoop：拒绝了start-dfs.sh权限 [英] Hadoop: start-dfs.sh permission denied

问题描述

我在我的笔记本电脑上安装Hadoop。 SSH工作正常，但我无法启动hadoop。

  munichong @ GrindPad：〜$ ssh localhost 
欢迎使用Ubuntu 12.10（GNU / Linux 3.5.0-25-通用x86_64）
 
 *文档：https://help.ubuntu.com/ 
 
 0包可以更新。 
 0更新是安全更新。 
 
上次登录：星期一3月4日00:01:36 2013 from localhost 
 
 munichong @ GrindPad：〜$ /usr/sbin/start-dfs.sh 
 chown：更改`/ var / log / hadoop / root'的所有权：不允许操作
启动namenode，记录到/var/log/hadoop/root/hadoop-munichong-namenode-GrindPad.out 
 /usr/sbin/hadoop-daemon.sh：第136行：/var/run/hadoop/hadoop-munichong-namenode.pid：权限被拒绝
 usr / sbin / hadoop-daemon.sh：第135行：/ var /log/hadoop/root/hadoop-munichong-namenode-GrindPad.out：Permission denied 
 head：无法打开`/var/log/hadoop/root/hadoop-munichong-namenode-GrindPad.out'进行阅读：没有这样的文件或目录
 localhost：chown：更改`/ var / log / hadoop / root'的所有权：不允许操作
 localhost：启动datanode，记录到/ var / log / hadoop / root / hadoop-munichong-datanode-GrindPad.out 
 localhost：/usr/sbin/hadoop-daemon.sh：第135行：/var/log/hadoop/root/hadoop-munichong-datanode-GrindPad.out：权限被拒绝
 localhos t：/usr/sbin/hadoop-daemon.sh第136行：/var/run/hadoop/hadoop-munichong-datanode.pid：权限被拒绝
 localhost：head：无法打开`/ var / log / hadoop /root/hadoop-munichong-datanode-GrindPad.out'阅读：没有这样的文件或目录
 localhost：chown：改变`/ var / log / hadoop / root'的所有权：操作不允许
 localhost：启动secondarynamenode，记录到/var/log/hadoop/root/hadoop-munichong-secondarynamenode-GrindPad.out 
 localhost：/usr/sbin/hadoop-daemon.sh：第136行：/ var / run / hadoop / hadoop -munichong-secondarynamenode.pid：权限被拒绝
 localhost：/usr/sbin/hadoop-daemon.sh：第135行：/var/log/hadoop/root/hadoop-munichong-secondarynamenode-GrindPad.out ：权限被拒绝
 localhost：head：无法打开`/var/log/hadoop/root/hadoop-munichong-secondarynamenode-GrindPad.out'阅读：没有这样的文件或目录
 
 munichong @GrindPad：〜$ sudo /usr/sbin/start-dfs.sh 
 [sudo] munichong的密码：
起始namenode，记录到/var/log/hadoop/root/hadoop-root-namenode-GrindPad.out 
 localhost：权限被拒绝（公钥，密码）。 
 localhost：权限被拒绝（公钥，密码）。 
  

我使用了sudo。但是许可仍然被拒绝。

有没有人可以帮助我？

预先感谢！

解决方案

问题的最后几个小时，但终于解决了。
我使用同一个用户提取的hadoop安装，与我用来运行hadoop的用户一样。所以用户权限不是问题。

我的配置是这样的：
Google Cloud上的Ubuntu linux机器。

安装Hadoop / home /
Hadoop数据目录/ var / lib / hadoop
和目录访问位是777，因此任何人都可以访问。
我在远程机器上进行了ssh修改配置文件并执行了start-dfs.sh，然后它给了我权限被拒绝（公钥）
所以这里是解决方案：
在同一个ssh终端中：

1. ssh-keygen

2.它会询问文件夹的位置，它将复制密钥，我输入 /home/hadoop/.ssh/id_rsa

3.it会要求输入密码，为简单起见请保留为空。

4. cp / home / hadoop /.ssh/id_rsa.pub .ssh / authorized_keys
（要将新生成的公钥复制到用户home / .ssh中的auth文件directiry

dfs.sh
（现在它应该可以工作！）

I am installing Hadoop on my laptop. SSH works fine, but I cannot start hadoop.

munichong@GrindPad:~$ ssh localhost
Welcome to Ubuntu 12.10 (GNU/Linux 3.5.0-25-generic x86_64)

 * Documentation:  https://help.ubuntu.com/

0 packages can be updated.
0 updates are security updates.

Last login: Mon Mar  4 00:01:36 2013 from localhost

munichong@GrindPad:~$ /usr/sbin/start-dfs.sh
chown: changing ownership of `/var/log/hadoop/root': Operation not permitted
starting namenode, logging to /var/log/hadoop/root/hadoop-munichong-namenode-GrindPad.out
/usr/sbin/hadoop-daemon.sh: line 136: /var/run/hadoop/hadoop-munichong-namenode.pid: Permission denied
usr/sbin/hadoop-daemon.sh: line 135: /var/log/hadoop/root/hadoop-munichong-namenode-GrindPad.out: Permission denied
head: cannot open `/var/log/hadoop/root/hadoop-munichong-namenode-GrindPad.out' for reading: No such file or directory
localhost: chown: changing ownership of `/var/log/hadoop/root': Operation not permitted
localhost: starting datanode, logging to /var/log/hadoop/root/hadoop-munichong-datanode-GrindPad.out
localhost: /usr/sbin/hadoop-daemon.sh: line 135: /var/log/hadoop/root/hadoop-munichong-datanode-GrindPad.out: Permission denied
localhost: /usr/sbin/hadoop-daemon.sh: line 136: /var/run/hadoop/hadoop-munichong-datanode.pid: Permission denied
localhost: head: cannot open `/var/log/hadoop/root/hadoop-munichong-datanode-GrindPad.out' for reading: No such file or directory
localhost: chown: changing ownership of `/var/log/hadoop/root': Operation not permitted
localhost: starting secondarynamenode, logging to /var/log/hadoop/root/hadoop-munichong-secondarynamenode-GrindPad.out
localhost: /usr/sbin/hadoop-daemon.sh: line 136: /var/run/hadoop/hadoop-munichong-secondarynamenode.pid: Permission denied
localhost: /usr/sbin/hadoop-daemon.sh: line 135: /var/log/hadoop/root/hadoop-munichong-secondarynamenode-GrindPad.out: Permission denied
localhost: head: cannot open `/var/log/hadoop/root/hadoop-munichong-secondarynamenode-GrindPad.out' for reading: No such file or directory

munichong@GrindPad:~$ sudo /usr/sbin/start-dfs.sh
[sudo] password for munichong: 
starting namenode, logging to /var/log/hadoop/root/hadoop-root-namenode-GrindPad.out
localhost: Permission denied (publickey,password).
localhost: Permission denied (publickey,password).

I used "sudo". But the permission is still denied.

Is there anyone can help me?

Thanks in advance!

解决方案

I was stuck at the same issue for last couple of hours but finally solved it. I had the hadoop installation extracted by same user as one I am using to run hadoop. So user privilege is not issue.
My cofiguration is like this: Ubuntu linux machine on Google Cloud.

Hadoop installation /home/ Hadoop data directory /var/lib/hadoop and the directory access bits are 777 so anybody can access. I did ssh into the remote machine made changes to the config files and executed start-dfs.sh, then it gave me "Permission denied (Public key)" So here is the solution: In the same ssh terminal:

1. ssh-keygen

2.It will ask for folder location where it will copy the keys, I entered /home/hadoop/.ssh/id_rsa

3.it will ask for pass phrase, keep it empty for simplicity.

4.cp /home/hadoop/.ssh/id_rsa.pub .ssh/authorized_keys (To copy the newly generated public key to auth file in your users home/.ssh directiry

5. ssh localhost

6. start-dfs.sh (Now it should work!)

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