- Stop telemetry on the overcloud controllers.
systemctl stop openstack-aodh-evaluator openstack-aodh-listener openstack-aodh-notifier openstack-ceilometer-central openstack-ceilometer-collector openstack-ceilometer-notification openstack-gnocchi-metricd openstack-gnocchi-statsd
- Next stop the mongod service.
systemctl stop mongod
- You should now backup MongoDB files.
tar Jcf /tmp/mongodb-backup-$HOSTNAME-$(date +%F_%H%M%S).tar.xz /var/lib/mongodb
- Delete the content of /var/lib/mongodb folder as follows:
rm -r /var/lib/mongodb/*
- Run mongodb on all controllers.
systemctl start mongod
- Create MongoDB master on controller 0
mongo --host MONGOHOST --eval 'rs.initiate()'
- Find the listener IP address of MongoDB and controllers 1 and 2.
ss -tlnp|grep mongo
- Add IP addresses in mongo replication.
mongo --host MONGOHOST --eval 'rs.add("controler1_mongodb_IP:PORT"); rs.add("controler2_mongodb_IP:PORT"); '
- Now monitor status as follows:
mongo --host MONGOHOST --eval 'db.isMaster()' # which node is the master. Should be only contorller0
mongo --host MONGOHOST --eval 'rs.conf()' # confirm all hosts are in the cluster
mongo --host MONGOHOST --eval 'rs.status()' # replication status check
- Create ceilometer database in mongodb.
mongo --host MONGOHOST --eval 'db.getSiblingDB("ceilometer").addUser({user: "ceilometer", pwd: "MONGOPASSWORD", roles: [ "readWrite", "dbAdmin" ]})'
- Start telemetry.
systemctl start openstack-aodh-evaluator openstack-aodh-listener openstack-aodh-notifier openstack-ceilometer-central openstack-ceilometer-collector openstack-ceilometer-notification openstack-gnocchi-metricd openstack-gnocchi-statsd
