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How to clear ceilometer in OpenStack

To clean up old ceilometer data in OpenStack, perform the following steps:
  • First of all, stop the Telemetry service.
systemctl stop openstack-ceilometer-collector openstack-ceilometer-notification openstack-gnocchi-metricd openstack-gnocchi-statsd openstack-aodh-evaluator openstack-aodh-listener openstack-aodh-notifier openstack-ceilometer-central
  • Stop MongoDB service by entering the following on shell prompt.
systemctl stop mongod
  • Delete all files in /var/lib/mongodb and then restart MongoDB.
cd /var/lib/mongodbrm -r *
  • Restart MongoDB.
systemctl start mongodb
  • Create a MongoDB master node.
mongo --host MONGOHOST --eval 'rs.initiate()'
  • Fing listener IP by entering the following command.
ss -tlnp|grep mongo
  • Add resulting IP to MongoDB replication file.
mongo --host MONGOHOST --eval 'rs.add("controler1_mongodb_IP:PORT"); rs.add("controler2_mongodb_IP:PORT"); '
  • Create a ceilometer database.
mongo --host MONGOHOST --eval 'db.getSiblingDB("ceilometer").addUser({user: "ceilometer", pwd: "MONGOPASS", roles: [ "readWrite", "dbAdmin" ]})'
  • Start Telemetry service using systemctl.
systemctl start openstack-ceilometer-collector openstack-ceilometer-notification openstack-gnocchi-metricd openstack-gnocchi-statsd openstack-aodh-evaluator openstack-aodh-listener openstack-aodh-notifier openstack-ceilometer-central

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