Metrics Endpoint

[zbindenren]

Would a pull request accepted that adds prometheus support?

I was thinking of something that returns:

# HELP healthcheck_failed A counter that shows number of failed checks.
# TYPE healthcheck_failed counter
healthcheck_failed{check="ping", fatal="true} 3

[dselans]

I no longer have maintainer access in this repo, but I don't see why not -- I'll ping someone to take a look at this when you get it in.

[schigh]

@zbindenren I will start prioritizing this. Apologies for the late response.