aodh/doc/source/install/development.rst

Installing development sandbox

Ceilometer has several daemons. The basic are: polling agent running either on the Nova compute node(s) or polling agent running on the central management node(s), collector and notification agent running on the cloud's management node(s). In a development environment created by devstack, these services are typically running on the same server. They do not have to be, though, so some of the instructions below are duplicated. Skip the steps you have already done.

Note

In fact, previously ceilometer had separated compute and central agents, and their support is implemented in devstack right now, not one agent variant. For now we do have deprecated cmd scripts emulating old compute/central behavior using namespaces option passed to polling agent, which will be maintained for a transitional period.

Configuring devstack

double: installing; devstack

1. Download devstack.

2. Create a local.conf file as input to devstack.

   Note

   local.conf replaces the former configuration file called localrc. If you used localrc before, remove it to switch to using the new file. For further information see the localrc description page or devstack configuration.

3. Ceilometer makes extensive use of the messaging bus, but has not yet been tested with ZeroMQ. We recommend using Rabbit or qpid for now. By default, RabbitMQ will be used by devstack.

4. The ceilometer services are not enabled by default, so they must be enabled in local.conf before running stack.sh.

   This example local.conf file shows all of the settings required for ceilometer:

   [[local|localrc]]
   
   # Enable the ceilometer metering services
   enable_service ceilometer-acompute ceilometer-acentral ceilometer-anotification ceilometer-collector
   
   # Enable the ceilometer alarming services
   enable_service ceilometer-alarm-evaluator,ceilometer-alarm-notifier
   
   # Enable the ceilometer api services
   enable_service ceilometer-api

   The first group of daemons are necessary for core ceilometer functionality: polling, event listening, and data collection.

5. Nova does not generate the periodic notifications for all known instances by default. To enable these auditing events, set instance_usage_audit to true in the nova configuration file and restart the service.

6. Cinder does not generate notifications by default. To enable these auditing events, set the following in the cinder configuration file and restart the service:

   notification_driver=messagingv2