Configure control groups¶

You can configure cgroups for multiple nodes before you deploy an OpenStack environment by editing the settings_1.yaml file on the Fuel Master node.

To configure control groups:

1. Log in to the Fuel Master node CLI.

2. Download the Fuel configuration:

   fuel settings --env-id <id> --download
   

3. Open the settings_1.yaml file for editing.

4. Add the required services to the cgroups section.

   Example:

   editable:
    cgroups:
      metadata:
        always_editable: true
        group: general
        label: Cgroups conguration for services
        restrictions:
          - action: hide
            condition: 'true'
            weight: 90
    mysqld:
      label: mysqld
      type:  text
      value: '{"memory":{"memory.swappiness":0,
             "memory.soft_limit_in_bytes":"%5, 10, 20"}}'
    beam.smp:
      label: beam.smp
      type:  text
      value: '{"memory":{"memory.swappiness":0}}'
    cinder-api:
      label: cinder-api
      type:  text
      value: '{"blkio":{"blkio.weight":500}}'
    keystone-api:
      label: keystone-api
      type:  text
      value: '{"cpu":{"cpu.shares":70}}'
    neutron-server:
      label: neutron-server
      type:  text
     value: '{"memory":{"memory.soft_limit_in_bytes":"%total, min, max"}}'
   

5. Save and exit.

6. Upload the new configuration file to Fuel:

   fuel settings --env-id <env_id> --upload