chroot系统中，启动sshd -d 后，不能正常登录报错Ssh, error: openpty: No such file or directory

if you get the error

PTY allocation request failed on channel 0
stdin: is not a tty

and in your auth.log is written:

error: openpty: No such file or directory
error: session_pty_req: session 0 alloc failed

• try the following, but always first check, if the step is already done:

mknod /dev/ptmx c 5 2
chmod 666 /dev/ptmx
mkdir /dev/pts

• Add to /etc/fstab:

none            /dev/pts        devpts        gid=5,mode=620    0 0

• Mount /dev/pts

mount /dev/pts

 ln -sf /dev/null /dev/tty2
 ln -sf /dev/null /dev/tty3
 ln -sf /dev/null /dev/tty4

 ln -sf /dev/null /dev/tty