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Testing an nginx Update with LXD

When it comes to containers, one of the benefits is the speed at which they deploy, making them ideal for testing changes. In this hands-on lab, we take an existing web container, copy it, then make some updates to `nginx`, ensuring we didn't break anything with our changes while still maintaining an isolated existing web environment.

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Labs

Path Info

Level
Clock icon Beginner
Duration
Clock icon 30m
Published
Clock icon Apr 03, 2020

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Table of Contents

  1. Challenge

    Deploy a Container Based on the web01 Container

    Take a snapshot of the existing container:

    lxc snapshot web01 1.0
    

    Create web-test based on this snapshot:

    lxc copy web01/1.0 web-test
    lxc start web-test
    
  2. Challenge

    Install nginx mainline from Source

    Copy the provided installation script to the new web-test container:

    lxc file push /tmp/files/labfiles/nginx-script.sh web-test/tmp/
    

    Access the container:

    lxc exec web-test -- ash
    

    Remove the current version of nginx:

    rc-service nginx stop
    apk del nginx
    mv /etc/nginx /etc/nginx-old
    

    Run the script to install nginx 1.17.1:

    chmod +x /tmp/nginx-script.sh
    sh /tmp/nginx-script.sh
    
  3. Challenge

    Check the Website

    Confirm the website is working on the container itself:

    curl localhost
    

    Now check on the LXD server:

    lxc list
    curl <ip_of_web-test>
    

    To finish, take a snapshot of the completed build:

    lxc snapshot web-test nginx-build
    

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!

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