Centos 7 Container not getting Start

[lowegame]

Hello, Centos 7 as a container does not start when I set up a virtual server and the error appears as follows. Can you help with the solution?

PVE Version: 7.0-8

WARN: old systemd (< v232) detected, container won't run in a pure cgroupv2 environment! Please see documentation -> container -> cgroup version.
TASK WARNINGS: 1

Thank you from now.

 

[lowegame]

Hello there,

I guess there is no one who can help.

 

[TodorPetkov]

Hi,

see this: https://pve.proxmox.com/wiki/Upgrade_from_6.x_to_7.0#Old_Container_and_CGroupv2

 

[ness1602]

Solution is to either install new systemd or migrate your machine to centos8 or something newer

 

[kotakomputer]

Since instruction in documentation not complete (you must open several links) here the steps you need to do:

1. nano /etc/default/grub
2. find GRUB_CMDLINE_LINUX_DEFAULT="quiet"
3. change to GRUB_CMDLINE_LINUX_DEFAULT="systemd.unified_cgroup_hierarchy=0 quiet"
4. run update-group
5. restart server/node
6. if still failed then try to set Container options: Unprivileged = Yes