Enable Compute service meters for Red Hat Enterprise Linux and CentOS

Enable Compute service meters for Red Hat Enterprise Linux and CentOS

Telemetry uses a combination of notifications and an agent to collect Compute meters. Perform these steps on each compute node.

Install and configure components

  1. Install the packages:

    # yum install openstack-ceilometer-compute
    
  1. Edit the /etc/ceilometer/ceilometer.conf file and complete the following actions:

    • In the [DEFAULT] and [oslo_messaging_rabbit] sections, configure RabbitMQ message queue access:

      [DEFAULT]
      ...
      rpc_backend = rabbit
      
      [oslo_messaging_rabbit]
      ...
      rabbit_host = controller
      rabbit_userid = openstack
      rabbit_password = RABBIT_PASS
      

      Replace RABBIT_PASS with the password you chose for the openstack account in RabbitMQ.

    • In the [DEFAULT] and [keystone_authtoken] sections, configure Identity service access:

      [DEFAULT]
      ...
      auth_strategy = keystone
      
      [keystone_authtoken]
      ...
      auth_uri = http://controller:5000
      auth_url = http://controller:35357
      memcached_servers = controller:11211
      auth_type = password
      project_domain_name = default
      user_domain_name = default
      project_name = service
      username = ceilometer
      password = CEILOMETER_PASS
      

      Replace CEILOMETER_PASS with the password you chose for the Telemetry service database.

    • In the [service_credentials] section, configure service credentials:

      [service_credentials]
      ...
      auth_url = http://controller:5000
      project_domain_id = default
      user_domain_id = default
      auth_type = password
      username = ceilometer
      project_name = service
      password = CEILOMETER_PASS
      interface = internalURL
      region_name = RegionOne
      

      Replace CEILOMETER_PASS with the password you chose for the ceilometer user in the Identity service.

Configure Compute to use Telemetry

  • Edit the /etc/nova/nova.conf file and configure notifications in the [DEFAULT] section:

    [DEFAULT]
    ...
    instance_usage_audit = True
    instance_usage_audit_period = hour
    notify_on_state_change = vm_and_task_state
    
    [oslo_messaging_notifications]
    ...
    driver = messagingv2
    

Finalize installation

  1. Start the agent and configure it to start when the system boots:

    # systemctl enable openstack-ceilometer-compute.service
    # systemctl start openstack-ceilometer-compute.service
    
  2. Restart the Compute service:

    # systemctl restart openstack-nova-compute.service
    
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