Monitoring a Rails app using Prometheus and Grafana — DevOps Project 08

This is me learning and building in public, I have complete 8 DevOps Projects by far, see them all here.

In this one, we will be using Prometheus and Grafana to monitor our rails application, Geeky.

First: key pair

2. security groups

Ensure that your security groups allow the necessary traffic between these instances. For example:

• Rails instance: Allow traffic on port 3000 (or whichever port your app is running on).
• Prometheus instance: Allow traffic on port 9090.
• Grafana instance: Allow traffic on port 3000.
• Allow internal communication between these instances on necessary ports.

We will create two security groups:

• app-sg: for rails
• monitoring-sg: for prometheus and grafana

Create instances

Application prereqs