You may receive an error as “Unable to get tty name: Bad file descriptor” while accessing a VPS from the host server. The problem occur when some files from /lib directory of the VPS goes missing. See example below:
root@hostserver:/# vzctl enter VEID
entered into CT VEID
Unable to get tty name: Bad file descriptor
root@VEID:/#
In this case, you will either have to copy the /lib directory from a different VPS of the same template
# cp -R /vz/root/VEID1/lib /vz/root/VEID/
(where, VEID1 is the VPS ID of a different VPS using the same OS template)
OR extract the respective OS template and copy the /lib directory from it:
# tar -zxf /vz/template/cache/os_template.tar.gz
# cp -R /vz/template/cache/lib /vz/root/VEID/
Reboot the VPS
# vzctl restart VEID