I am new to BalenaOS and Cloud and I have an issue. Here is what I would like to do.
I got two devices. Both get the same application.
What I want to do it to be able to launch as much instance of the application (in docker) with different parameters.
Example :
Case 1 :
Device 1:
app with ID=1
app with ID=2
Device 2:
app with ID=3
app with ID=4
Case 2 :
Device 1:
app with ID=5
app with ID=2
Device 2:
What would be the simpler way to do that ?
I think at some solution :
pushing a new docker_compose file each time I want a modification
add a web app to launch the new docker instance on fly
something with service or environment variable ? But I didn’t find how to …
But can’t we do that from the could management interface ?
I hope I was clear enough on what I want to do. Does somebody got an idea on how to do that ?
Hi, you can do this via balena dashboard through device summary -> Device Service Variables -> add variables for specific services. Is this what you are looking for?
So I think the solution we have with balenaCloud isn’t suited to do what you want directly; but it would be possible for you to create a container and run balenaEngine within that container and drive it via a second service or environment variables. It would be a very technically challenging project though, so I don’t know if that’s something you want to undertake.
I am not aware of any sample projects we have which do this, so I cannot point you to anything unfortunately, but we would be interested to see how it worked out or if you found a different approach
the scale feature from docker compose would be the better approach I think.
For now my use case is quite simple so I got on the manually added variable road. I won’t be as simple as just have one service defined in the .yml but at least I will be able to launch/stop and modify each application from balenacloud, so that is cool !
I will share later my demo and the code !