Connect to PLC without knowing IP

[Armin@netPI]

Soo evilscan works as expected in the node-red container console and i was on my way to get the function node working BUT
when i restarted the container i am no longer able to connect to node-red UI.. "ERR_CONNECTION_REFUSED".
This is not the first time i got this error, i used to reinstall node-red but this shouldnt be the only solution..
Do you have any advices for me? Btw evilscan still works in console, but the PLC is now disconnected.

Great to hear that the scanner works as expected.

I suppose you restart the container using netPI's web GUI? In this case you can watch a log file made by Docker that records all console outputs you usually see as if you are on a raspberry Pi 3 and a shall.

So click on the containers list and then click the container name and then !Log. There you have to see Node-RED outputs any why it was not started properly as the picture shows.

Another possibilty is to install SSH into your container additionally and then jump into the container using putty terminal and then you can start/stop node-red as if you are on a standard raspberry. Since Node-RED gives you many status information during its start, you should see the reason why it is not starting.