Upgrades to the Carbon Black EDR server occasionally require you to use a utility called cbupgrade after executing yum update cb-enterprise to migrate the database schema or Threat Intel feed data.

You are notified of this requirement when attempting to start the cb-enterprise services. In a clustered-server configuration, you must run the cbupgrade tool on all nodes before restarting the cluster. When running this utility in a clustered environment, be sure to answer No when asked to start the Carbon Black EDR services. You must use cbcluster to start the clustered server.

See See Upgrading Cluster Nodes for cbupgrade options.