'''Problem''': container created succesfully and started.== Symptoms ==But when trying to do
<pre>
vzctl enter 101 </pre>you get<pre>container enter failed(?)error: open pty: No such file or directory
</pre>
== Solutions == === Using strace, you see=== You can use [http://linux.die.net/man/1/strace strace] to analyse the command further:
<pre>
# strace -ff vzctl enter101
....
fstat64(...st_mode=S_IFCHR|0620, st_rdev=makedev(136, 0)...) fail
</pre>
'''Solution''':
Recompile the kernel with the following option:
<pre> 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 /presbin/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'Other solutions''':This was tested with CentOS VE.
1) enter the VE manually creating the LEGACY_PTYS devices=== Debian only ===
<pre>* Enter the VE manuallyvzctl exec CTID=101 /sbin/MAKEDEV tty vzctl exec 101 $CTID "mount -t devpts devpts /sbindev/MAKEDEV ptypts" vzctl enter 101</pre>$CTID
2A) If you want * Remove udev in VE, using apt save the changes forcing CTID=101 vzctl exec $CTID apt-get remove udev to make LEGACY_PTYS: vzctl restart $CTID
<pre>cat > /etc/udev/makedev.d/51-udev.nodes# These device have to be created manuallytty0tty1tty2tty3....ttyp0ttyp1ttyp2ttyp3....ptyp0ptyp1ptyp2ptyp3....</pre>=== Older Slackware ===
Check that /dev/pts is mounted under the container as a devpts filesystem:
2B) If you think is better disable udev in VE, comment out in the VE the line:<pre>/sbin/start_udev</pre>in<pre>/etc/rc.d/rc.sysinit</pre>vzctl exec VEID mount
Restart the VE and make the devices with MAKEDEV:<pre>vzctl exec 101 /sbin/MAKEDEV ttyvzctl exec 101 /sbin/MAKEDEV ptyvzctl enter 101</pre>I have used If it is not, try this method also to create zap dummy devices for asterisk in VEimmediate fix:<pre>/dev/zap/ctl/dev/zap/pseudo/dev/zap/channel/dev/zap/timer</pre>
2C) The devices can be setup also with a line in VE configvzctl exec VEID mount /dev/pts
<pre>grep DEV You should now be able to enter the VPS. You will need to fix /etc/vzrc.d/conf/101rc.confDEVNODES="zapS and/ctl:rw zapor /channel:rw zapetc/pseudo:rw zapfstab to ensure that /timer:rw "<dev/pre>pts is mounted in the boot process.
