在 ubuntu 22 Jammy 主机上。为 centos7 或 centos8-Stream 创建了 lxc 容器。但它们不起作用。问在 LXC 论坛上，我得到了答案
您的系统可能正在 cgroup2 模式下运行，但 centos7 不支持该模式，因此无法启动。您需要重新启动主机进入 cgroup1 模式才能解决此问题。
如何将我的主机重新启动到 cgroup1？
此输出可能会有帮助：
lxc-checkconfig
返回：
LXC version 5.0.0~git2209-g5a7b9ce67
Kernel configuration not found at /proc/config.gz; searching...
Kernel configuration found at /boot/config-5.15.0-48-generic
--- Namespaces ---
Namespaces: enabled
Utsname namespace: enabled
Ipc namespace: enabled
Pid namespace: enabled
User namespace: enabled
Network namespace: enabled
--- Control groups ---
Cgroups: enabled
Cgroup namespace: enabled
Cgroup v1 mount points:
Cgroup v2 mount points:
/sys/fs/cgroup
Cgroup v1 systemd controller: missing
Cgroup v1 freezer controller: missing
Cgroup ns_cgroup: required
Cgroup device: enabled
Cgroup sched: enabled
Cgroup cpu account: enabled
Cgroup memory controller: enabled
Cgroup cpuset: enabled
--- Misc ---
Veth pair device: enabled, loaded
Macvlan: enabled, not loaded
Vlan: enabled, not loaded
Bridges: enabled, loaded
Advanced netfilter: enabled, loaded
CONFIG_IP_NF_TARGET_MASQUERADE: enabled, not loaded
CONFIG_IP6_NF_TARGET_MASQUERADE: enabled, not loaded
CONFIG_NETFILTER_XT_TARGET_CHECKSUM: enabled, not loaded
CONFIG_NETFILTER_XT_MATCH_COMMENT: enabled, not loaded
FUSE (for use with lxcfs): enabled, not loaded
--- Checkpoint/Restore ---
checkpoint restore: enabled
CONFIG_FHANDLE: enabled
CONFIG_EVENTFD: enabled
CONFIG_EPOLL: enabled
CONFIG_UNIX_DIAG: enabled
CONFIG_INET_DIAG: enabled
CONFIG_PACKET_DIAG: enabled
CONFIG_NETLINK_DIAG: enabled
File capabilities:
Note : Before booting a new kernel, you can check its configuration
usage : CONFIG=/path/to/config /usr/bin/lxc-checkconfig