Activity: Running a Web Server after Content Preparation

Scenario

You are assigned the task of making a Kubernetes installation for a web server. However, there are some manual tasks to be carried out to change the files before serving them. You need to ensure that changes are always applied before the content is served. Besides this, show the status of the initialization and check the final output of the web server.

Aim

With the successful deployment, there should be a pod running in Kubernetes with one main container and one initialization container. In the initialization container, write Welcome from Packt to the main index file. This file should be served by the main container when started.

Prerequisites

• Use a basic Docker image for the initialization container, such as busybox.
• For the main container, a web server capable image should be used, such as nginx.

Steps for Completion

1. Create a pod definition.
2. Include one initialization container:
   • Change the content of the files.
3. Include one main container:
   • Create a web server.
4. Deploy the pod.
5. Check the status of the initialization container.
6. Check the output of the web server.

You should see the following output: