Event logs store the events that occurred and these are applicable to all the deployed services, policies, policy states and other such components.
To increase the default event log file size, add property server.log.size to $AUTOPILOT_HOME/naming/node.properties and/or $AUTOPILOT_HOME/localhost/node.properties file. Once the property is added, restart services. The value is in bytes. Example below, is defining that the event log size as 10MB.
property server.log.size = 10000000