id: cannot find name for user ID 0
-bash: cannot make pipe for command substitution: Too many open files in system
-bash: /etc/profile.d/less.sh: Too many open files in system
-bash: /etc/profile.d/mc.sh: Too many open files in system
-bash: /etc/profile.d/vim.sh: Too many open files in system
-bash: /etc/profile.d/which-2.sh: Too many open files in system
-bash: /root/.bash_profile: Too many open files in system
-bash-3.2# logout
-bash: /root/.bash_logout: Too many open files in system
-bash: /etc/bash.bash_logout: Too many open files in system
exited from CT XXXX

Fast fix:
vzctl restart XXXX

vzctl mount XXXX
Opening delta /vz/private/XXXX/root.hdd/root.hdd
Adding delta dev=/dev/ploopXXXX img=/vz/private/XXXX/root.hdd/root.hdd (rw)

/dev/ploop15649p1: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY.
(i.e., without -a or -p options)
Error in e2fsck (fsutils.c:288): e2fsck failed (exit code 4)

Failed to mount image: Error in e2fsck (fsutils.c:288): e2fsck failed (exit code 4)
[41]

ploop check -F /vz/private/CID/root.hdd/root.hdd
ploop mount /vz/private/CID/root.hdd/DiskDescriptor.xml
fdisk -l /dev/ploopXXXXX
e2fsck -y /dev/ploopXXXX

ploop umount /vz/private/XXXX/root.hdd/DiskDescriptor.xm

ps ax | awk '{print $1}' | xargs vzpid | grep CTID

Error: Package: kmod-kvdo-6.1.0.181-17.el7_5.x86_64 (updates)
Requires: kernel(dm_unregister_target) = 0x35ba4186
Installed: kernel-3.10.0-862.el7.x86_64 (@anaconda)
kernel(dm_unregister_target) = 0x62b8c739
Installed: vzkernel-3.10.0-862.9.1.vz7.63.3.x86_64 (@openvz-os)
kernel(dm_unregister_target) = 0x97f3d3e0
Available: kernel-debug-3.10.0-862.el7.x86_64 (base)
kernel(dm_unregister_target) = 0x9fea9142
Available: kernel-debug-3.10.0-862.2.3.el7.x86_64 (updates)
kernel(dm_unregister_target) = 0x9fea9142
Available: kernel-debug-3.10.0-862.3.2.el7.x86_64 (updates)
kernel(dm_unregister_target) = 0x9fea9142
Available: kernel-debug-3.10.0-862.3.3.el7.x86_64 (updates)
kernel(dm_unregister_target) = 0x9fea9142
Available: kernel-debug-3.10.0-862.6.3.el7.x86_64 (updates)
kernel(dm_unregister_target) = 0xe573fa0d
Available: kernel-debug-3.10.0-862.9.1.el7.x86_64 (updates)
kernel(dm_unregister_target) = 0xe573fa0d
Available: kernel-debug-3.10.0-862.11.6.el7.x86_64 (updates)
kernel(dm_unregister_target) = 0xe573fa0d
Available: vzkernel-debug-3.10.0-862.9.1.vz7.63.3.x86_64 (openvz-os)
kernel(dm_unregister_target) = 0x854b76de
You could try using --skip-broken to work around the problem
You could try running: rpm -Va --nofiles --nodigest

yum --disablerepo=* --enablerepo=base install vdo kmod-kvdo

yum install epel*release
yum install prlctl prl-disp-service vzkernel
reboot
systemctl status vz

If container will not start automatically:

ploop check -F /vz/private/CTID/root.hdd/root.hdd
ploop mount /vz/private/CTID/root.hdd/root.hdd/DiskDescriptor.xml

fsck /dev/ploop11111p1
vzctl start CTID

FIx for Openvz Centos 7

yum downgrade http://vault.centos.org/7.2.1511/os/x86_64/Packages/iputils-20121221-7.el7.x86_64.rpm

cat /proc/vz/vzquota | grep CTID
vzquota off CTID
vzquota drop CTID

OpenVZ is running…
Checking for CPT version compatibility
Checking for CPU flags compatibility
Error: CT is locked
Error in ioctl(CPT_TEST_VECAPS): Resource temporarily unavailable
Error: CPU capabilities check failed!
Error: Destination node CPU is not compatible
Error: Can’t continue live migration

Reboot not help:

vzctl restart CTID
Restarting container
Stopping container …
Child 441850 exited with status 7
Killing container …
Child 441851 exited with status 7
Unable to stop container

Fix:

vzctl chkpnt CTID --kill

Upgrade to CentOS 7.5 systemd does not work. server running but you can access it:
unable to open pty no such file or directory centos 7 openvz

You should check ovz kernel version: uname -a
if you have 2.6.32-042stab108.8 you should upgrade kernel up to 2.6.32-042stab120.11


ln -sf /usr/share/zoneinfo/EET /etc/localtime


This could be happen after server migration using some utils like rsync.

vzctl stop server_id
vzquota drop server_id
vzctl start server_id