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== Symptoms ==
<pre>
error: open pty: No such file or directory
</pre>
=== Using strace === You can use [http://linux.die.net/man/1/strace strace] to analyse thecommand further:<pre># strace -ff vzctl enter 101....fstat64(...st_mode=S_IFCHR|0620,st_rdev=makedev(136, 0)...) fail....</pre> Recompile the kernel with the following option: CONFIG_LEGACY_PTYS=y === LEGACY_PTYS === ==== Temporary fix ====''Note: This is a temporary fix so you can enter the VE.'' * Create the LEGACY_PTYS devices: vzctl exec 101 /sbin/MAKEDEV tty vzctl exec 101 /sbin/MAKEDEV pty vzctl exec 101 mknod --mode=666 /dev/ptmx c 5 2 vzctl enter 101 ==== Permanent fix with udev ====* For a permanent fix with udev, you will need to force udev to make LEGACY_PTYS: cat > /etc/udev/makedev.d/51-udev.nodes # These device have to be created manually tty0 tty1 tty2 tty3 .... ttyp0 ttyp1 ttyp2 ttyp3 .... ptyp0 ptyp1 ptyp2 ptyp3 .... ==== Permanent fix without udev ====* Alternatively, you can disable udev: Edit the ''/etc/rc.d/rc.sysinit'' file and comment out the ''/sbin/start_udev'' line Or you can run the following command: sed -i 's|/sbin/start_udev|#/sbin/start_udev|g' /etc/rc.d/rc.sysinit ''Warning'' Updates to the package which owns this file may revert your changes. ''Note'' This was tested with CentOS VE. === Debian only === * Enter the VE manually CTID=101 vzctl exec $CTID "mount -t devpts devpts /dev/pts" vzctl enter $CTID * Remove udev using apt CTID=101 vzctl exec $CTID apt-get remove udev vzctl restart $CTID === Older Slackware === Check that /dev/pts is mounted under the container as a devpts filesystem: vzctl exec VEID mount If it is not, try this immediate fix: vzctl exec VEID mount /dev/pts You should now be able to enter the VPS. You will need to fix /etc/rc.d/rc.S and/or /etc/fstab to ensure that /dev/pts is mounted in the boot process. == See also == * {{Bug|130}}* {{Bug|578}} [[Category: Troubleshooting]]
