Administrator Guide

Document 418
3 Receiving telemetry reports
After telemetry streaming is configured on the iDRAC, telemetry reports are streamed to the configured
Redfish clients or Remote Syslog servers. The Redfish client can also pull the reports on demand. The
following sections describe the methods through which clients can receive the data.
Redfish client using subscription method
A Redfish client receives the telemetry reports using subscription method. The first step is to create a
subscription specifying the destination using HTTP POST request. At the report interval or trigger condition, if
triggers are configured, all enabled reports are sent to the destination specified in the subscription request.
The HTTP client can receive reports by listening on a destination port.
POST https://<IDRAC-IP>/redfish/v1/EventService/Subscriptions
Body: {
"Destination": "https://<listener ip:port>",
"EventFormatType": "MetricReport",
"Context": "TelmetryTest",
"Protocol": "Redfish",
"EventTypes": ["MetricReport"],
"SubscriptionType":"RedfishEvent"
}
Clients can terminate subscriptions by sending an HTTP DELETE message to the iDRAC Event Service. The
number of subscriptions a user can create is a maximum of 2.
The following figures show the HTTP requests for creating, deleting and getting subscriptions.