情况概要
使用OCP 部署3节点OB集群，查看各个节点没有cgroup没有目录。
ll /home/admin/oceanbase/cgroup
ll /sys/fs/cgroup/cpu/oceanbase
但 教材中说OCP 会自动配置cgroup，查看参数也是true；
问题：
为什么没有相关目录？
系统相关信息：
obclient(root@sys)[oceanbase]> select version();
+---------------------------+
| version() |
+---------------------------+
| 5.7.25-OceanBase-v4.2.1.8 |
+---------------------------+
1 row in set (0.004 sec)
[root@rocky95 ~]# ll /sys/fs/cgroup/
total 0
-r--r--r-- 1 root root 0 Nov 11 14:28 cgroup.controllers
-rw-r--r-- 1 root root 0 Nov 12 11:39 cgroup.max.depth
-rw-r--r-- 1 root root 0 Nov 12 11:39 cgroup.max.descendants
-rw-r--r-- 1 root root 0 Nov 11 14:28 cgroup.procs
-r--r--r-- 1 root root 0 Nov 12 11:39 cgroup.stat
-rw-r--r-- 1 root root 0 Nov 11 16:43 cgroup.subtree_control
-rw-r--r-- 1 root root 0 Nov 12 11:39 cgroup.threads
dr-xr-xr-x 2 root root 0 Nov 11 17:21 cpuset,cpu,cpuacct
-r--r--r-- 1 root root 0 Nov 12 11:39 cpu.stat
-r--r--r-- 1 root root 0 Nov 12 11:39 cpu.stat.local
drwxr-xr-x 2 root root 0 Nov 11 14:28 dev-hugepages.mount
drwxr-xr-x 2 root root 0 Nov 11 14:28 dev-mqueue.mount
drwxr-xr-x 2 root root 0 Nov 11 14:28 init.scope
-rw-r--r-- 1 root root 0 Nov 12 11:39 io.cost.model
-rw-r--r-- 1 root root 0 Nov 12 11:39 io.cost.qos
-r--r--r-- 1 root root 0 Nov 12 11:39 io.stat
-r--r--r-- 1 root root 0 Nov 12 11:39 memory.numa_stat
--w------- 1 root root 0 Nov 12 11:39 memory.reclaim
-r--r--r-- 1 root root 0 Nov 12 11:39 memory.stat
-r--r--r-- 1 root root 0 Nov 12 11:39 misc.capacity
-r--r--r-- 1 root root 0 Nov 12 11:39 misc.current
drwxr-xr-x 2 root root 0 Nov 11 14:28 sys-fs-fuse-connections.mount
drwxr-xr-x 2 root root 0 Nov 11 14:28 sys-kernel-config.mount
drwxr-xr-x 2 root root 0 Nov 11 14:28 sys-kernel-debug.mount
drwxr-xr-x 2 root root 0 Nov 11 14:28 sys-kernel-tracing.mount
drwxr-xr-x 50 root root 0 Nov 12 11:30 system.slice
drwxr-xr-x 5 root root 0 Nov 12 09:24 user.slice
