Centos 6 to Centos 7 cgroups

Question

I'm trying to set up resource limits per user in Centos 7, but I can't find the right commands for the new implementation of cgroups (I did read the documentation but it talks about restricting services not users).

This are the steps in Centos 6

1. Add to /etc/cgconfig.conf

   group mygroup{ cpu { cpu.shares = 200; } memory { memory.limit_in_bytes = 128m; } }

2. Restart service cgconfig restart

3. Start in system boot: chkconfig cgconfig on
4. Verify groups added correctly: lscgroup

5. Add the processes for which we wish to limit resources to the cgroups we created: add to /etc/cgrules.conf

   myuser cpu,memory mygroup/

6. start the cgred service for the cgrules configuration changes to take effect: service cgred start

7. make sure the cgred service is enabled to start on system boot so that our rules persist across reboots: chkconfig cgred on

What is the equivalent in Centos 7?

Solution 1

Please try for example

systemctl set-property user-1000.slice CPUShares=100

Assuming you wish to limit the resource for UID 1000 and limit the CPUShares.

Solution 2

After install : yum install libcgroup-tools commands lscgroup and cg*, files /etc/cg* are available.

Comments

[Michael Hampton]

Read the documentation, of course.

[c4f4t0r]

you can use the cgroup with systemd

[Jesús Carrera]

@MichaelHampton I did read that documentation but it talks about restricting services, not users.

[Jesús Carrera]

@c4f4t0r I have no idea how to use the cgroup with systemd to replicate the steps above

[Jesús Carrera]

that method is considered deprecated and I'd like to know the new recommended way to do it in Centos 7