Answer by fgorbat for Hi, i have installed ceilometer on my controller node and today I check that mongodb database size is 11 GB. I want to cleanup old data, how can I do ? There is a procedure/method ? Thanks. Salvo.

hey, Here is the procedure:
1. Drop ceilometer db by:
mongo --eval "db.dropDatabase();" 2. Stop mongo db service mongod stop 3. Remove the data files from the disk rm -f /var/lib/mongodb/ceilometer.* 4. Start mongo service mongod start Note: Validate correct startup by service mongod status

5. Recreate ceilometer db mongo --host controller --eval ' db = db.getSiblingDB("ceilometer"); db.addUser({user: "ceilometer", pwd: "CEILOMETER_DBPASS", roles: [ "readWrite", "dbAdmin" ]})' 6. Restart ceilometer services service openstack-ceilometer-api restart service openstack-ceilometer-notification restart service openstack-ceilometer-central restart service openstack-ceilometer-collector restart service openstack-ceilometer-alarm-evaluator restart service openstack-ceilometer-alarm-notifier restart