检查以下安装包是否安装，如缺少请安装

yum list installed | grep libcgroup
yum list installed | grep libcgroup-tools

缺少则安装
 

yum install libcgroup
yum install libcgroup-tools

安装后设置cgroup服务开机启动

systemctl enable cgconfig.service

启动cgconfig服务

systemctl start cgconfig.service

这里如果执行报错：

Job for cgconfig.service failed because the control process exited with error code. See "systemctl status cgconfig.service" and "journalctl -xe" for details.

则使用命令查看报错原因

systemctl status cgconfig.service

如果原因如下：
Error: cannot mount cpu to /cgroup/cpu: Device or resource busy

则执行

cgclear - unload the cgroup filesystem

之后重新启动就可以了。