Tag: redfish

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Enable Telemetry Streaming with RACADM, Scripts and/or Redfish and Postman

This post aim to describe three methods with which to enable the Telemetry Streaming feature in the iDRAC9 on Dell EMC 14G PowerEdge servers:

  • Enable using RACADM / SSH
  • Enable using provided GitHub scripts
  • Enable using Redfish and Postman

Enabling using RACADM and Redfish are selective methods while using the GitHub script enables ALL reports in one go. Personally I’d recommend being selective to start with until it is clear what data is required / desired.

Note that enabling everything will result in just shy of 3M data points / 24h / server

Blog posts in this series:

License

Get a 30 day trial of the iDRAC9 Datacenter license here: https://www.dell.com/support/article/en-us/sln309292/idrac-cmc-openmanage-enterprise-openmanage-integration-with-servicenow-and-dpat-trial-licenses?lang=en

Enable using RACADM / SSH

Enable using GitHub script

Enable using Redfish and Postman

URI and payload for Postman

URI:
https://IDRAC_IP/redfish/v1/Managers/iDRAC.Embedded.1/Attributes

Auth: Basic (root / calvin by default)

Methods: 
GET for viewing current settings
PATCH for changing settings

Payload for enabling streaming telemetry (indentation doesn't work properly in Wordpress, sorry):
{
"Attributes": {
"Telemetry.1.EnableTelemetry": "Enabled"
}
}

Payload for enabling / disabling reports (indentation doesn't work properly in Wordpress, sorry)
{
"Attributes": {
"TelemetryCPUSensor.1.EnableTelemetry": "Enabled",
"TelemetryPowerStatistics.1.EnableTelemetry": "Disabled",
"TelemetrySensor.1.EnableTelemetry": "Enabled"
}
}

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Example Redfish REST calls: Create RAID volume

Prerequisites:

  • PowerEdge Gen 14 server (R740, M640, etc)
  • iDRAC 9 with firmware version: 3.21.21.21 or above

Create RAID volume (virtual disk)

Method: POST

URI: https://<idrac ip>/redfish/v1/Systems/System.Embedded.1/Storage/<CONTROLLER>/Volumes

BODY / Payload:

The following is an example of creating a RAID1 (mirror) volume on the RAID.Slot.6-1 controller using two disks (bay 2 and bay 3):

{
    "VolumeType": "Mirrored",
    "Name": "VOL02-R1",
    "Drives": [
        {
            "@odata.id": "/redfish/v1/Systems/System.Embedded.1/Storage/Drives/Disk.Bay.2:Enclosure.Internal.0-1:RAID.Slot.6-1"
        },
        {
            "@odata.id": "/redfish/v1/Systems/System.Embedded.1/Storage/Drives/Disk.Bay.3:Enclosure.Internal.0-1:RAID.Slot.6-1"
        }
    ]
}

For RAID1 the VolumeType is “Mirrored”. For other RAID types please use the below:

  • RAID 0: “NonRedundant”
  • RAID 1: “Mirrored”
  • RAID 5: “StripedWithParity”
  • RAID 10: “SpannedMirrors”
  • RAID 50: “SpannedStripesWithParity”

HTTP status 202 will be returned if creation is successful.

Also see the following scripts on GitHub:

  1. https://github.com/dell/iDRAC-Redfish-Scripting/blob/master/Redfish%20Python/CreateVirtualDiskREDFISH.py
  2. https://github.com/dell/iDRAC-Redfish-Scripting/blob/master/Redfish%20Python/DeleteVirtualDiskREDFISH.py



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Example Redfish REST calls: Attach / Detach ISO file

Assumptions:

  • PowerEdge Gen 14 server (R740, M640, etc)
  • iDRAC 9 with firmware version: 3.30.30.30 or above
  • The ISO file is hosted on a web server and can be reached via HTTP

Attach:

Method: POST
URI: https://<idrac_ip_address>/redfish/v1/Managers/iDRAC.Embedded.1/VirtualMedia/CD/Actions/VirtualMedia.InsertMedia

BODY:

{
     "Image": "http://<web_server>/<iso_file>.iso"
}

Detach

Method: POST
URI: https://<idrac_ip_address>/redfish/v1/Managers/iDRAC.Embedded.1/VirtualMedia/CD/Actions/VirtualMedia.EjectMedia

BODY:

{}

Yes, for the detach the BODY of the request is an empty pair of curly braces “{}”.

If all goes well, each REST call will return a “204 No Content” in response.