本来是打算搭建hadoop+hbase的,但是还没开始就被这个ssh阻碍了~
先说下我的系统版本 ubuntu11.1
安装和启动都成功的情况下,出现了
#ssh localhost
Read from socket failed: Connection reset by peer
------------------------不知所措的分割线------------------------
下面描述下我的解决过程
注意检查/var/log/auth.log中的记录
在我的机器上出现的问题是权限问题
错误日志
Feb 27 10:14:39 ubuntu sshd[3052]: error: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Feb 27 10:14:39 ubuntu sshd[3052]: error: @ WARNING: UNPROTECTED PRIVATE KEY FILE! @
Feb 27 10:14:39 ubuntu sshd[3052]: error: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Feb 27 10:14:39 ubuntu sshd[3052]: error: Permissions 0711 for '/etc/ssh/ssh_host_rsa_key' are too open.
Feb 27 10:14:39 ubuntu sshd[3052]: error: It is recommended that your private key files are NOT accessible by others.
Feb 27 10:14:39 ubuntu sshd[3052]: error: This private key will be ignored.
Feb 27 10:14:39 ubuntu sshd[3052]: error: bad permissions: ignore key: /etc/ssh/ssh_host_rsa_key
Feb 27 10:14:39 ubuntu sshd[3052]: error: Could not load host key: /etc/ssh/ssh_host_rsa_key
原因是私有key文件权限问题,解决方式(/etc/ssh是我的ssh目录)
#cd /etc/ssh
#chmod 0644 *
查看一下权限
#ll
drwxr-xr-x 2 root root 4096 2012-02-28 09:30 ./
drwxr-xr-x 133 root root 12288 2012-02-28 08:56 ../
-rw-r--r-- 1 root root 125749 2011-07-30 00:02 moduli
-rw-r--r-- 1 root root 1669 2011-07-30 00:02 ssh_config
-rw-r--r-- 1 root root 2489 2012-02-27 10:07 sshd_config
-rw-r--r-- 1 root root 668 2012-02-27 17:35 ssh_host_dsa_key
-rw-r--r-- 1 root root 601 2012-02-27 17:35 ssh_host_dsa_key.pub
-rw-r--r-- 1 root root 223 2012-02-28 09:23 ssh_host_ecdsa_key
-rw-r--r-- 1 root root 173 2012-02-28 09:23 ssh_host_ecdsa_key.pub
-rw-r--r-- 1 root root 1679 2012-02-27 17:35 ssh_host_rsa_key
-rw-r--r-- 1 root root 393 2012-02-27 17:35 ssh_host_rsa_key.pub
-rw-r--r-- 1 root root 302 2011-01-11 02:48 ssh_import_id
重新附权限
#chmod 0600 ssh_host_ecdsa_key ssh_host_dsa_key ssh_host_rsa_key
重新启动ssh
#/etc/init.d/ssh restart
OK 测试下
#ssh localhost
Welcome to Ubuntu 11.10 (GNU/Linux 3.0.0-12-generic x86_64)
* Documentation: https://help.ubuntu.com/
357 packages can be updated.
82 updates are security updates.
Last login: Tue Feb 28 09:43:46 2012 from localhost
搞定了~
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