What is the HealthCheckStatus metric in Azure App Services?

Question

I researching the metrics available for App Services and came upon the HealthCheckStatus metric. It is not clear what it is and what its' unit is (official docs say it's count, but it's not clear count of what). Any help on the matter would be much appreciated!

Answer 1

Hi @Safadi, Miras , well Health Check does pings at the configured route for all instances of your app. The metric is basically the number of connected instances that's returning 200-299s. Not sure if you saw it under Understand metrics but it's

The average health status across the application's instances in the App Service Plan.

Essentially, this metric will fluctuate as instances are scaled out/in as well as when the route is available. Therefore, as a best practice, this route should check also check for any dependencies your app uses.