使用cgroup限制普通用户资源

#安装cgroup
yum install -y libcgroup-tools.x86_64 libcgroup


#配置cgconfig
vim /etc/cgconfig.conf
#增加
group JstormGroup {
memory {
memory.limit_in_bytes = "85899345920";
memory.swappiness = 0;
memory.oom_control = 0;
}
cpu {
cpu.rt_period_us="1000000";
cpu.rt_runtime_us="0";
cpu.cfs_period_us="100000";
cpu.cfs_quota_us="-1";
cpu.shares="700";
}
}

#配置cgrules
vim /etc/cgrules.conf
#增加
jstorm cpu,memory JstormGroup/

systemctl start cgconfig.service
systemctl start cgred.service
systemctl status cgconfig.service
systemctl status cgred.service
systemctl enable cgconfig.service
systemctl enable cgred.service

systemctl restart cgconfig.service
systemctl restart cgred.service

#检查：是否已存在，如果不存在，执行：systemctl restart cgconfig.service systemctl restart cgred.service
ll /sys/fs/cgroup/memory/JstormGroup/memory.usage_in_bytes


注：重启顺序为cgconfig -> cgred ，更改配置文件后两个服务需要重启，且顺序不能错

#启动控制
systemctl status|start|stop|enable|disable cgconfig.service
systemctl status|start|stop|enable|disable cgred.service

运维监控：

#监控已使用内存，换算百分比，
/sys/fs/cgroup/memory/JstormGroup/memory.usage_in_bytes
#监控最大限制内存
/sys/fs/cgroup/memory/JstormGroup/memory.limit_in_bytes