Healthcheck implementation

[gelbal]

Hey @wzhou first of all welcome to the balena community!

Can you please expand on your use case?

You could utilize the same named Docker compose file’s configuration option perhaps:

Compose file version 2 reference

We have a Javascript example to demo this capability on a balena device:

Demo of Docker HEALTHCHECK for a service

Hey, I’ve put together a little demo showing of the Docker HEALTHCHECK functionality, which can help keep your services running fine. Docker can periodically run a command in your container and depending on the command’s results restart it. In this demo, a small web service is implemented, which has a state endpoint. Ona a given trigger, it will go into a bad state, and starts to return 503 errors on that endpoint. The healthcheck picks that up, and restarts the container. Of course this is …

Additionally, the device supervisor has the following endpoint that you might be interested in utilizing instead of building such logic yourself:

Interacting with the balena Supervisor - Balena Documentation

I wanted to give some general direction. Then let us know if you have any specific questions.

Cheers…