All Event processing logs for a particular management pack can be found at: <DCF-Install>/Event-Processing/Event-Processing-Manager/<INSTANCE>(ex:smarts-notifs-events)/logs.

Event processing log can be found in below path. This will have event spy logging info also, if enabled.

<DCF-Install>/Event-Processing/Event-Processing-Manager/<INSTANCE>(ex:smarts-notifs-events)/logs/processing-0-0.log

Latest processing log name will have "-0-0" appended to its name like above.

To enable logging, change the configuration to push events to event spy. And after changing the configuration, operator need to restart the service to see the logging info in processing-0-0.log.

Example: smarts-notifs-events is installed management pack name in below example:

To check the status of the installed services:

<DCF-Install>/bin/manage-modules.sh service status all
….
* Checking 'event-processing-manager smarts-notifs-events'...       [ running ]

To restart the particular service:

<DCF-Install>/bin/manage-modules.sh service restart event-processing-manager smarts-notifs-events
 * Stopping 'event-processing-manager smarts-notifs-events'...            [ OK ]
 * Starting 'event-processing-manager smarts-notifs-events'...            [ OK ]

Sample output (JSON) of event in Kafka :

{
	"Acknowledged": false,
	"Active": true,
	"AuditTrail": [
		{
			"User": "admin",
			"ActionType": "UNACKNOWLEDGE",
			"SerialNumber": 3,
			"Text": "",
			"Timestamp": 1550654825
		},
		{
			"User": "admin",
			"ActionType": "RELEASE_OWNERSHIP",
			"SerialNumber": 2,
			"Text": "",
			"Timestamp": 1550654778
		},
		{
			"User": "admin",
			"ActionType": "ACKNOWLEDGE ALL",
			"SerialNumber": 1,
			"Text": "",
			"Timestamp": 1550654728
		},
		{
			"User": "DXA",
			"ActionType": "NOTIFY",
			"SerialNumber": 0,
			"Text": "Server: INCHARGE-AM-PM",
			"Timestamp": 1550654481
		}
	],
	"Category": "Availability",
	"CausedBy": [],
	"Causes": [
		"NOTIFICATION-Router_10.107.116.235_Unresponsive",
		"NOTIFICATION-Router_200.0.4.1_Unresponsive",
		"NOTIFICATION-HSRPGroup_HSRP-GROUP-10.10.20.5_AllComponentsDown"
	],
	"Certainty": 100.0,
	"ClassDisplayName": "Router",
	"ClassName": "Router",
	"ClearOnAcknowledge": false,
	"ElementClassName": "Router",
	"ElementName": "10.107.116.235",
	"EventDisplayName": "Down",
	"EventName": "Down",
	"EventState": "ACTIVE",
	"EventText": "Indicates that the root cause is a failed system.",
	"EventType": "DURABLE",
	"FirstNotifiedAt": 1550654416,
	"Impact": 0,
	"InMaintenance": false,
	"InstanceDisplayName": "10.107.116.235",
	"InstanceName": "10.107.116.235",
	"IsProblem": true,
	"IsRoot": true,
	"LastChangedAt": 1550654916,
	"Name": "NOTIFICATION-Router_10.107.116.235_Down",
	"OccurrenceCount": 1,
	"Owner": "admin",
	"PollingState": "SUBSCRIPTION",
	"ProcessedTimeStamp": 1550654916,
	"Severity": 1,
	"Source": "INCHARGE-SA-PRES",
	"SourceDomainName": "INCHARGE-AM-PM",
	"SourceEventType": "PROBLEM",
	"SourceInfo": "",
	"TroubleTicketID": "",
	"UserDefined1": "",
	"UserDefined10": "",
	"UserDefined11": "",
	"UserDefined12": "",
	"UserDefined13": "",
	"UserDefined14": "",
	"UserDefined15": "",
	"UserDefined16": "",
	"UserDefined17": "",
	"UserDefined18": "",
	"UserDefined19": "",
	"UserDefined2": "",
	"UserDefined20": "",
	"UserDefined3": "",
	"UserDefined4": "",
	"UserDefined5": "",
	"UserDefined6": "",
	"UserDefined7": "",
	"UserDefined8": "",
	"UserDefined9": ""
} 

Sample debugging (Event-Spy) output from processing-0-0.log

INFO     -- [2019-03-13 16:58:14 IST] -- EventSpy$SpyStreamHandler::handleEvent(): From Smarts[data]:
INFO     -- [2019-03-13 16:58:14 IST] -- EventSpy$SpyStreamHandler::handleEvent(): com.watch4net.events.common.data.GenericEvent
(k) Name                = NOTIFICATION-Router_bq-gwlab.lss.com_DiscoveryError                                                                                                                                                                                                                                                               (DEFINITION,STRING)
    ClassName           = Router                                                                                                                                                                                                                                                                                                                (DEFINITION,STRING)
    InstanceName        = bq-gwlab.lss.com                                                                                                                                                                                                                                                                                                  (DEFINITION,STRING)
    EventName           = DiscoveryError                                                                                                                                                                                                                                                                                                        (DEFINITION,STRING)