Monitoring server-side metrics

So far, you have learned how to monitor application-side metrics by instrumenting the Gin application code. In this section, you will learn how to expose server-side metrics and monitor the overall health of the containers running on the Gin distributed web application.

To collect server-side metrics, you can use an open source solution called Telegraf (https://github.com/influxdata/telegraf), a data collection agent (DCA) that can collect metrics from multiple inputs and forward them to different sources:

Figure 10.16 – Collecting server-side metrics with the Telegraf agent

Telegraf can be easily deployed using Docker. Add the following code block to docker-compose.yml:

telegraf:
   image: telegraf:latest
   volumes:
     - ./telegraf.conf:/etc/telegraf/telegraf.conf
     - /var/run/docker.sock:/var/run/docker.sock 

telegraf.conf contains a list of data...