Programmatically reboot a node

[Daniele]

I understand your solution, but what happens to me is a bit more strange: the gw appears online in MyController, but it's nodes are offline, so I need to check if multiple nodes of the same gw are offline to decide to reboot it (to make things more complicated, I have 3 gws since my house is made of concrete and the transmission range is very short).
What I could do (I'll try later today) is to build a condition script that counts the offline nodes, and if there are more than a threshold than I can start an operation that reboots the gw.

[skywatch]

@Daniele That is the opposite of what I have - here my GW is 'up' in mycontroller but node 0 is 'down' and yet it is working perfectly with myc and all nodes!

If this is a random thing I would suggest triple checking all connections individually to ensure they are tight and no movement at all can happen. I took out a DC barrel connector and replaced it and things got a lot better from just that one change.

I also put the arduino watchdog on the GW node as another way to recover from any 'hangs'.

I added the previously posted operations as another way to tackle problems with the gw, but not sure how to tell if it is working as expected!

Finally I upgraded the pi from stretch to buster and fully updated everything.

Since then I have had 7-8 weeks without any issues (previously 1-2 weeks was about all I could hope for).

I still have a ups on my to do list. That will happen soon I hope.

[jkandasa]

@Daniele some example to send the payload.
Note: I didn't test this in practice. Please let me know if you face an issue.

var myImports = new JavaImporter(java.lang, java.util, org.mycontroller.standalone.utils.McUtils);

with(myImports) {
  // get your node/sensor/variable via uuid
  var mySensorVariable = mcApi.uidTag().getByUid("abc").getResource();
  
  // set new value
  mySensorVariable.value  = 2
  
  // send paylaod
  mcApi.sensor().sendPayload(mySensorVariable);
}

[Daniele]

@jkandasa thank you for the example, but how can I leverage it to reboot a node?
I mean, as far as I understand the reboot payload is not a regular sensor that I can map through a uid.

[jkandasa]

@Daniele I have modified the script and here is your request,

var myImports = new JavaImporter(java.lang, java.util, org.mycontroller.standalone.utils.McUtils, org.mycontroller.standalone.message.IMessage);

with(myImports) {
  // get your gateway via uuid
  var myGateway = mcApi.uidTag().getByUid("my-test-gateway").getResource();
  
  // Import message type
  var Message = Java.type("org.mycontroller.standalone.message.IMessage")
  
  // create message object
  var message = Message.getInstance()
  
  // update gateway id.
  message.setGatewayId(myGateway.id)
  
  // update message type
  message.setType("Internal")
  
  // update message sub type
  message.setSubType("Reboot")
  
  // set sensor id as 255 for node message
  message.setSensorId("255")
  
  // set acknowledgement status
  message.setAck(0)
  
  // set empty payload, but json conversion throws excepton for empty, so set it as "0"
  message.setPayload("0")
  
  // update your node EUI
  message.setNodeEui(21)
  
  // send Raw Message
  mcApi.sensor().sendRawMessage(message);
}

[Daniele]

Amazing, thank you!

[Radi-M]

Hi all,

I have a similar problem with Raspberry PI and MySensors Serial Node with NRF radio.
After a random time the node service on RPI stops working:

To restart the service I need to run 'sudo systemctl restart mysgw.service'.
Currently, I have scheduled a script to do that, which decrease problem frequency, however, it still happens.

Q: Is there a way to run this console command from the MyController script when the selected node is down?

jkandasa it would be great if you can provide an example.

Many Thanks.

[jkandasa]

@Radi-M can you try this and let me know,

var myImports = new JavaImporter(java.lang, java.util);

with(myImports) {
  // your command to execute
  var command = "sudo systemctl restart mysgw.service";
  
  // execute your command
  mcApi.osCommandExecuter().executeLinuxCommand(command);
}

[Radi-M]

Hi,

It works.

Many thanks.
Radi-M

[skywatch]

Probably a stupid question, but will this reboot all mys GW attached to the pi?

[jkandasa]

Probably a stupid question, but will this reboot all mys GW attached to the pi?

@skywatch Yes, it will. if your mys GW powered by RPI