Telemetry (ceilometer) is the metering and monitoring service in OpenStack. The Central agent polls for resource utilization statistics for resources not tied to instances or compute nodes. Due to limitations of a polling model, a single instance of this agent can be polling a given list of meters. In this setup, we install this service on the API nodes also in the active / passive mode. Making the Telemetry central agent service highly available in active / passive mode involves managing its daemon with the Pacemaker cluster manager. You will find at this page the process to install the Telemetry central agent.

First of all, you need to download the resource agent to your system: # cd /usr/lib/ocf/resource.d/openstack # wget https://raw.github.com/madkiss/openstack-resource-agents/master/ocf/ceilometer-agent-central # chmod a+rx * You may then proceed with adding the Pacemaker configuration for the Telemetry central agent resource. Connect to the Pacemaker cluster with crm configure, and add the following cluster resources: primitive p_ceilometer-agent-central ocf:openstack:ceilometer-agent-central \ params config="/etc/ceilometer/ceilometer.conf" \ op monitor interval="30s" timeout="30s" This configuration creates p_ceilometer-agent-central, a resource for manage Ceilometer Central Agent service crm configure supports batch input, so you may copy and paste the above into your live pacemaker configuration, and then make changes as required. Once completed, commit your configuration changes by entering commit from the crm configure menu. Pacemaker will then start the Ceilometer Central Agent service, and its dependent resources, on one of your nodes.

Edit /etc/ceilometer/ceilometer.conf: # We use API VIP for Identity Service connection: os_auth_url=http://192.168.42.103:5000/v2.0 # We send notifications to High Available RabbitMQ: notifier_strategy = rabbit rabbit_host = 192.168.42.102 [database] # We have to use MySQL connection to store data: sql_connection=mysql://ceilometer:password@192.168.42.101/ceilometer