Module xxx/xxx is not connected on Raspberry Pi - azure-iot-edge

Question

All,
I am porting some modules from Ubuntu to Raspbain and using a Python module, I am getting the error:
2018-10-03 17:52:11.964 +00:00 [WRN] - Module pi/sample is not
connected 2018-10-03 17:52:39.530 +00:00 [WRN] - TLS handshake
failed., System.IO.IOException: Channel is closed, 555eae73
I am using the sample python module from VS Code. The exact same 'main.py' work on ubuntu.
Repro on Ubuntu:
1. Follow: https://learn.microsoft.com/en-us/azure/iot-edge/quickstart-linux.
2. in VS Code create a new sample module python. Push that to your docker repository
3. In portal.azure.com push both modules to your iot edge host with the following route:
"routes": {
"a": "FROM /messages/modules/tempSensor/outputs/* INTO BrokeredEndpoint(\"/modules/sample/inputs/input1\")",
"b": "FROM /messages/modules/sample/outputs/output1 INTO $upstream"
},
4. after a few minutes running docker logs edgeHub you will see:
018-10-03 17:51:53.270 +00:00 [INF] - Successfully generated identity for clientId ubuntu1/sample and username ksayeaz3166.azure-devices.net/ubuntu1/sample/?api-version=2017-11-08-preview&DeviceClientType=iothubclient%2f1.2.5%20(native%3b%20Linux%3b%20x86_64)
2018-10-03 17:51:53.275 +00:00 [INF] - ClientAuthenticated, ubuntu1/sample, 2ae77b92
2018-10-03 17:51:53.345 +00:00 [INF] - New device connection for device ubuntu1/sample
Repro on Pi:
1. Follow: https://learn.microsoft.com/en-us/azure/iot-edge/quickstart-linux.
2. in VS Code create a new sample module python. Push that to your docker repository
3. In portal.azure.com push both modules to your iot edge host with the following route:
"routes": {
"a": "FROM /messages/modules/tempSensor/outputs/* INTO BrokeredEndpoint(\"/modules/sample/inputs/input1\")",
"b": "FROM /messages/modules/sample/outputs/output1 INTO $upstream"
},
4. after a few minutes running docker logs edgeHub you will see:
2018-10-03 17:52:11.964 +00:00 [WRN] - Module pi/sample is not
connected 2018-10-03 17:52:39.530 +00:00 [WRN] - TLS handshake
failed., System.IO.IOException: Channel is closed, 555eae73 2018-10-03
17:53:11.966 +00:00 [WRN] - Module pi/sample is not connected
2018-10-03 17:54:03.357 +00:00 [INF] - Reauthenticating connected
clients 2018-10-03 17:54:12.079 +00:00 [WRN] - Module pi/sample is not
connected
I have mode no changes to the python module sample code.
PI info:
root#raspberrypi:/home/pi# uname -a
Linux raspberrypi 4.14.70-v7+ #1144 SMP Tue Sep 18 17:34:46 BST 2018 armv7l GNU/Linux
root#raspberrypi:/home/pi# docker version
Client:
Version: 18.06.0-dev
API version: 1.37
Go version: go1.10.2
Git commit: daf021fe
Built: Wed Jun 27 00:53:52 2018
OS/Arch: linux/arm
Experimental: false
Orchestrator: swarm
Server:
Engine:
Version: dev
API version: 1.37 (minimum version 1.12)
Go version: go1.10.2
Git commit: 9aac187
Built: Tue Jun 26 23:27:27 2018
OS/Arch: linux/arm
Experimental: false
Ubuntu Info:
ksaye#ksaye-700T:~/iotedge$ uname -a
Linux ksaye-700T 4.13.0-41-generic #46~16.04.1-Ubuntu SMP Thu May 3 10:06:43 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
ksaye#ksaye-700T:~/iotedge$ docker version
Client:
Version: 17.12.0-ce
API version: 1.35
Go version: go1.9.2
Git commit: c97c6d6
Built: Wed Dec 27 20:11:19 2017
OS/Arch: linux/amd64
Server:
Engine:
Version: 17.12.0-ce
API version: 1.35 (minimum version 1.12)
Go version: go1.9.2
Git commit: c97c6d6
Built: Wed Dec 27 20:09:53 2017
OS/Arch: linux/amd64
Experimental: false
ksaye#ksaye-700T:~/iotedge$

Answer 1

Adding the OptimizedForPerformance setting discussed here resolve it: https://learn.microsoft.com/en-us/azure/iot-edge/troubleshoot#stability-issues-on-resource-constrained-devices