ARC controller: debug log level in the codebase

[dabcoder]

Why are you starting this discussion?

Question

What GitHub Actions topic or product is this about?

ARC (Actions Runner Controller)

Discussion Details

It is possible to set the log level in the ARC controller - gha-runner-scale-set-controller Helm chart - and choose between various levels, such as "debug", "info", "warn", and "error". However, I am not sure where this translates in the controller's code.

In the legacy ARC controller's code, this is visible with the go-loggr log.V(N) where the verbosity is chosen. e.g. here. This isn't used in the current controller in https://github.com/actions/actions-runner-controller/tree/master/controllers/actions.github.com.

Therefore, would it be useful to add such log lines with various verbosity levels so that setting debug level in the helm chart also enables those log lines, which could be helpful for troubleshooting.

[dabcoder]

Just read: https://github.com/actions/actions-runner-controller/blob/master/logging/logger.go#L73-L74, I now understand the logic. Setting the log level to debug maps it to log.V(1). Closing this thread then.