Exercise 2.3: Show metrics for NGINX instances

Objective

Gather metrics from NGINX Instances.

NGINX Instance Manager collects metrics from NGINX instances and stores entries in the nginx-manager database. These metrics can be accessed externally by a grafana dashboard or other systems since they are exposed as a prometheus endpoint. Further customization can be done using PromQL to form queries.

Guide

Step 1: View metrics in the UI

For this step, open the user interface for nginx-manager in the UDF dashboard. You can select the ACCESS menu under NGINX Manager Server and the INSTANCE MANAGER UI selection. This will open the user interface in a new browser tab.

From the Launchpad page, select Instance Manager and click on the Ubuntu hostname instance. The user interface should open a page with details of the instance. Select the Metrics tab.

This page has some useful system information, such as CPU/Memory utilization. On the upper right, you can change the time duration from last 5 mins to last 90 days.

You can see operating system metrics and CPU and memory usage.