Here’s how to directly connect to the Event Hub that backs an IoT Hub.
New Way
As of 5/30/2017, you can now get the underlying Event Hub connection string by either the “Endpoints” blade or the “Operations Monitoring” blade.
Endpoints Blade
Click Endpoints
Click Events
Use “Event Hub-compatible endpoint”
Operations Monitoring Blade
Click Operations Monitoring
Use “Event Hub-compatible endpoint”
Old Way
Here’s the connection string template, copy this, then copy each highlighted part from each step below.
Endpoint=<Event Hub-compatible endpoint>;SharedAccessKeyName=iothubowner;SharedAccessKey=<iothubowner primary key>
1. Event Hub Compatible Endpoint
In the Azure Portal, go to your IoT Hub, Settings, Operations monitoring:
2. SharedAccessKeyName
Set to iothubowner or whatever user you want to use
3. SharedAccessKey
In the Azure Portal, go to IoT Hub, Settings, Shared access policies, select user and copy Primary Key
