Monitoring applications

There are a variety of ways to monitor Go applications. One of the easiest ways is to set up Prometheus, a monitoring application written in Go (https://prometheus.io). This is an application that polls an endpoint based on your configuration file and collects a lot of information about your app, including the number of Goroutines, memory usage, and much more. This app will use the techniques from the previous recipe to set up a Docker environment to host Prometheus and connect to it.

How to do it...

The following steps cover writing and running your application:

1. From your Terminal or console application,createa new directory called~/projects/go-programming-cookbook/chapter11/monitoringand navigate to it.
2. Run the following command:

          $ go mod init github.com/PacktPublishing/Go-Programming-Cookbook-Second-Edition/chapter11/monitoring

        

You should see a file calledgo.modthat...