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Splunk Enterprise

Notable Events

Fetches notable events from Splunk Enterprise Security for threat detection and incident tracking.

Sync Type: Incremental Synchronisation

Requirements

Before configuring this input, you need to:

1. Have Splunk Enterprise Security (ES) installed — The notable index is created by Splunk Enterprise Security. If you do not have ES installed, this input will not be able to retrieve events.

   • Verify ES is installed by checking if the notable index exists in your Splunk instance

2. Create a Bearer Token — Splunk Bearer Token docs.

   • Log in to Splunk Web
   • Navigate to Settings → Tokens
   • Click New Token (or Create new token)
   • Provide a name and optional description
   • Click Create and copy the generated token
   • Securely store the token

3. Ensure REST API port is reachable — The default REST API port is 8089. Verify that this port (or your configured port) is reachable from your Monad collector.

   • If using a custom port, note it for configuration

Details

Monad retrieves new notable events from Splunk Enterprise using incremental synchronisation. The input tracks the latest event timestamp (_time) from each sync run and on the next run, retrieves only events with newer timestamps.

Data Retrieval Flow

1. Creates a Splunk search job via POST /services/search/jobs with the Splunk Processing Language (SPL) query search index=notable | sort 0 _time
   • On subsequent runs, the query becomes search index=notable _time>{epoch} | sort 0 _time to retrieve only newer events
2. Stores the search job SID in state immediately after creation to enable resumption if interrupted
3. Polls GET /services/search/jobs/{sid} every 10 seconds until the search completes (timeout: 5 minutes)
4. Retrieves paginated results via GET /services/search/jobs/{sid}/results with 1000 records per page
5. After each page, checkpoints the latest _time epoch value so the next run only fetches newer events
6. Deletes the search job via DELETE /services/search/jobs/{sid} after all results are streamed
7. On restart: If a SID is stored in state, resumes polling and streaming that job instead of creating a new one

Configuration

The following configuration defines the input parameters. Each field's specifications, such as type, requirements, and descriptions, are detailed below.

Settings

Setting	Type	Required	Description
Host	string	Yes	Splunk hostname or IP address without scheme (e.g., splunk.example.com or localhost). Do not include http:// or https://.
Port	integer	No	Splunk REST API port. Defaults to 8089 if not specified.
Cron	string	Yes	Schedule for running the input as a standard cron expression (e.g., 0 */6 * * * for every 6 hours).
Use Synthetic Data	boolean	No	Generate synthetic demo data instead of connecting to the real data source. Defaults to false.

Secrets

Secret	Type	Required	Description
Token	string	Yes	Splunk Bearer token used for authenticating REST API requests. Sent as the Authorization: Bearer <token> header.

Rate Limits

Scope	Limit	Window	Notes
API Requests	10	Per second	Conservative limit; Splunk Enterprise does not publicly document exact REST API rate limits

Source: Internal rate limit configuration for reliability

Limitations

• Requires Splunk Enterprise Security (ES) to be installed
• Search job polling timeout is 5 minutes; very large result sets may require longer windows

Related Articles

• Splunk Enterprise Create Search API
• Splunk Enterprise Fetch Results API
• Splunk Enterprise Security Documentation