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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
A Cloud Guru - Labs - Building a Prometheus Console Template
Author
A Cloud Guru

The Cloud Content team comprises subject matter experts hyper focused on services offered by the leading cloud vendors (AWS, GCP, and Azure), as well as cloud-related technologies such as Linux and DevOps. The team is thrilled to share their knowledge to help you build modern tech solutions from the ground up, secure and optimize your environments, and so much more!

What's a lab?

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

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

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