OPCPublisher Module is not getting started

Question

Host Machine - Azure Windows VM
Edge Runtime - IoT Edge for Linux on Windows

Binding is not working and because of this OPCPublisher is throwing an error. I have placed pn.json file in c:\iiotedge folder inside the windows VM
and getting error in OPCPublisher module.

Below is the Create Container Option-

{  
  "Hostname": "OPCPublisher",  
  "Cmd": [  
    "publisher",  
    "--pf=/appdata/pn.json",  
    "--di=60",  
    "--to",  
    "--aa",  
    "--si=10",  
    "--ms=262144"  
  ],  
  "HostConfig": {  
    "PortBindings": {  
      "62222/tcp": [  
        {  
          "HostPort": "62222"  
        }  
      ]  
    },  
    "Binds": [  
      "c://iiotedge:/appdata"  
    ],  
    "ExtraHosts": [  
      "localhost:127.0.0.1"  
    ]  
  }  
}  

Answer 1

Hello @SaurabhShuklaUS-9711,

The quickstart you posted is for generically setting up Azure IoT Edge for Linux on a Windows device (EFLOW). Have you been able to successfully deploy the Simulated Temperature Sensor module and to receive its data?

There is another guide, specifically for OPC Publisher module tutorial-publisher-deploy-opc-publisher-standalone
Your Container Create Options for OPC Publisher seems to be the cause as you mix Linux and Windows container create options.

...  
"Binds": [  
       "c://iiotedge:/appdata"  
     ],  
...  

EFLOW is based on CBL Mariner Linux, therefore it uses Linux containers and runs in a Linux VM on Windows. It is not possible to directly bind a folder from the host OS (Windows) into the container environment running in the Linux VM. The bind mount should be for a Linux directory within the EFLOW environment, e.g., /srv/opcpublisher what will be created if it does not exist by IoT Edge and bound to OPC Publishers /appdata working directory in the container.

You can try the following Container Create Options and add your specific command line arguments after the module has started successfully.

{  
    "Hostname": "opcpublisher",  
    "Cmd": [  
        "--pf=./pn.json",  
        "--aa"  
    ],  
    "HostConfig": {  
        "Binds": [  
            "/srv/opcpublisher:/appdata"  
        ]  
    }  
}  

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