stdin: is not a tty error / Server refused to allocate pty

cnx

This error is caused by an update with CentOS on OpenVZ nodes.

To fix, we need to login using WinSCP (http://winscp.net/)
Once logged in we need to open a terminal.
In the Terminal, type:

/sbin/MAKEDEV pty
/sbin/MAKEDEV tty
Now you can exit WinSCP and you will be able to login via SSH again.

When your VPS is restarted, the error will return so to fix this I have came up with a hotfix.
In SSH, type:

yum install -y nano

nano /etc/init.d/sshd
At the top of the file, anywhere after "#!/bin/bash", add

/sbin/MAKEDEV pty
/sbin/MAKEDEV tty

Press Ctrl+x
Type Y
Press Return
Now i hope this has fixed your problem.

cpuer

升级CentOS会出现这种问题？

cnx

是的,之前我安装桌面时就出现过,登陆不了SSH.

cpuer

重启下系统是否可以恢复正常？

pigicoffee

重启下米用

cpuer

额，那就得用楼主的办法来解决了。