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Building a Prometheus Console Template

Prometheus collects a wide variety of metric data. However, to make use of that data in the real world, you need a way to visualize important metrics at a glance. You can do this by building dashboards or similar pages that display real-time data in a useful format. One way to build these views is to use console templates. In this lab, you will have the opportunity to build a simple console template to display some statistics about a Linux server. This will give you some hands-on experience in working with console templates.

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Path Info

Level
Clock icon Intermediate
Duration
Clock icon 45m
Published
Clock icon Jun 12, 2020

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Table of Contents

  1. Challenge

    Add the Server Status Metric to the Console Template

    1. Create and edit the console template file:

      sudo vi /etc/prometheus/consoles/limedrop-web.html

    2. Implement a display of the current "up" status of the web server:

      {{template "head" .}}
{{template "prom_content_head" .}}
<h1>LimeDrop Web Server Metrics</h1>

<strong>Server Status:</strong> {{ template "prom_query_drilldown" (args "up{job='Web Server'}") }}
{{template "prom_content_tail" .}}
{{template "tail"}}

    3. View the console in a browser to verify it is working:

      http://<PROMETHEUS_SERVER_PUBLIC_IP>:9090/consoles/limedrop-web.html

  2. Challenge

    Add the CPU Usage Metric to the Console Template

    1. Edit the console template file:

      sudo vi /etc/prometheus/consoles/limedrop-web.html

    2. Implement a display for the web server's CPU usage:

      {{template "head" .}}
{{template "prom_content_head" .}}
<h1>LimeDrop Web Server Metrics</h1>

<strong>Server Status:</strong> {{ template "prom_query_drilldown" (args "up{job='Web Server'}") }}
<br />
<br />
<strong>Current CPU Usage:</strong> {{ template "prom_query_drilldown" (args "sum(rate(node_cpu_seconds_total{instance='limedrop-web:9100',mode!='idle'}[5m])) * 100 / 2" "%") }}
{{template "prom_content_tail" .}}
{{template "tail"}}

    3. View the console in a browser to verify it is working:

      http://<PROMETHEUS_SERVER_PUBLIC_IP>:9090/consoles/limedrop-web.html

  3. Challenge

    Add the Memory Usage Metric to the Console Template

    1. Edit the console template file:

      sudo vi /etc/prometheus/consoles/limedrop-web.html

    2. Implement a display for the web server's memory usage:

      {{template "head" .}}
{{template "prom_content_head" .}}
<h1>LimeDrop Web Server Metrics</h1>

<strong>Server Status:</strong> {{ template "prom_query_drilldown" (args "up{job='Web Server'}") }}
<br />
<br />
<strong>Current CPU Usage:</strong> {{ template "prom_query_drilldown" (args "sum(rate(node_cpu_seconds_total{instance='limedrop-web:9100',mode!='idle'}[5m])) * 100 / 2" "%") }}
<br />
<br />
<strong>Current Memory Usage:</strong> {{ template "prom_query_drilldown" (args "100 - (node_memory_MemAvailable_bytes / node_memory_MemTotal_bytes) * 100" "%") }}
{{template "prom_content_tail" .}}
{{template "tail"}}

    3. View the console in a browser to verify it is working:

      http://<PROMETHEUS_SERVER_PUBLIC_IP>:9090/consoles/limedrop-web.html
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Pluralsight Skills

Pluralsight Skills gives leaders confidence they have the skills needed to execute technology strategy. Technology teams can benchmark expertise across roles, speed up release cycles and build reliable, secure products. By leveraging our expert content, skill assessments and one-of-a-kind analytics, keep up with the pace of change, put the right people on the right projects and boost productivity. It's the most effective path to developing tech skills at scale.

What's a lab?

Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.

Provided environment for hands-on practice

We will provide the credentials and environment necessary for you to practice right within your browser.

Guided walkthrough

Follow along with the author’s guided walkthrough and build something new in your provided environment!

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