Access to iothub connection string dynamically from custom iot edge module.

[malavvakharia]

Expected Behavior

Tell us what should happen

Current Behavior

Tell us what happens instead of the expected behavior

Steps to Reproduce

Provide a detailed set of steps to reproduce the bug. 1. 2. 3. 4.

Context (Environment)

Output of iotedge check

Click here

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Device Information

• Host OS [e.g. Ubuntu 18.04, Windows Server IoT 2019]:
• Architecture [e.g. amd64, arm32, arm64]:
• Container OS [e.g. Linux containers, Windows containers]:

Runtime Versions

• aziot-edged [run iotedge version]:
• Edge Agent [image tag (e.g. 1.0.0)]:
• Edge Hub [image tag (e.g. 1.0.0)]:
• Docker/Moby [run docker version]:

Note: when using Windows containers on Windows, run docker -H npipe:////./pipe/iotedge_moby_engine version instead

Logs

aziot-edged logs

``` ```

edge-agent logs

``` ```

edge-hub logs

``` ```

Additional Information

Please provide any additional information that may be helpful in understanding the issue.

[malavvakharia]

Just like we can get the deviceId and moduleId dynamically can we get the iot hub connection string?

https://github.com/Azure/iotedge/issues/986

IOTEDGE_DEVICEID IOTEDGE_MODULEID

[ggjjj]

do you want to get the connection string in the module?

[malavvakharia]

do you want to get the connection string in the module?

Hello @ggjjj ,

I want the IOT hub connection string in custom azure module. Not the module connection string.

[ggjjj]

You can build it yourself by quering the values of IOTEDGE_IOTHUBHOST and IOTEDGE_DEVICEID from the env var.

connection_string = f"HostName={iot_hub_hostname};DeviceId={device_id};SharedAccessKey="

[malavvakharia]

Hello @ggjjj ,

So, what is the best practice of defining the SharedAccessKey in code?

And I want iot hub connection string not the device connection string.

Format looks like below: connection_string = f"HostName={iot_hub_hostname};SharedAccessKeyName=;SharedAccessKey="

[ggjjj]

You can set an env variable by setting the output of az iot hub connection-string show and use that in your module to read from

Command Link source - https://learn.microsoft.com/en-us/cli/azure/iot/hub/connection-string?view=azure-cli-latest

[david-emakenemi]

Hey @malavvakharia did you try @ggjjj suggestion above?

[david-emakenemi]

Hey @malavvakharia closing this out since no response but feel free to re-open this if you are still experiencing issues.