Azure IoT Edge – exec user process caused “exec format error”

If running Edge on a Raspberry Pi  and an Edge container’s logs show  ‘exec user process caused “exec format error”‘ as an error then most likely you are running a non Raspberry Pi container on the Raspberry Pi. If the docker file used to build the container starts with:

  • FROM microsoft/dotnet:2.0.0-runtime

or

  • FROM microsoft/dotnet:2.0.0-runtime-nanoserver-1709

then the line above should be changed to one of the following:

  • FROM microsoft/dotnet:2.0.5-runtime-stretch-arm32v7
  • FROM microsoft/dotnet:2.0-runtime-stretch-arm32v7
  • FROM microsoft/dotnet:2.0.5-runtime-deps-stretch-arm32v7
  • FROM microsoft/dotnet:2.0-runtime-deps-stretch-arm32v7

Azure IoT Edge stuck restarting

NOTE: This is for the private preview version of Azure IoT Edge

If your Azure IoT Edge runtime is giving the status of:

IoT Edge Status: RESTARTING
ERROR: Runtime is restarting. Please retry later.

and is not allowing for any of the other commands and you have waited an appropriated amount of time, then try the following:

First stop the edgeAgent container in docker:

sudo docker stop edgeAgent

Then, run the setup script for the iotedgectl again:

sudo iotedgectl setup --connection-string "{device connection string}" --auto-cert-gen-force-no-passwords (make sure to use your parameters)

The edge run-time should restart appropriately.