proxmox 升到7後

LXC的 Centos 7 無法開机 出現以下錯誤

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

TASK WARNINGS: 1 

解決方法如下

vi /etc/default/grub

I changed this line from,

GRUB_CMDLINE_LINUX_DEFAULT="quiet"

to

GRUB_CMDLINE_LINUX_DEFAULT="systemd.unified_cgroup_hierarchy=0 quiet"

更新grub

update-grub

重開機

https://pve.proxmox.com/pve-docs/chapter-sysadmin.html#sysboot_edit_kernel_cmdline

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

https://pve.proxmox.com/pve-docs/chapter-pct.html#pct_cgroup_compat

https://forum.proxmox.com/threads/unified-cgroup-v2-layout-upgrade-warning-pve-6-4-to-7-0.92459/