Pod definition in YAML in Kubernetes - Mini Project: Build & Apply

Pod definition in YAML

📖 Scenario: You are working as a DevOps engineer. Your team needs a simple Kubernetes Pod to run a web server container. You will create a YAML file that defines this Pod.

🎯 Goal: Create a Kubernetes Pod definition in YAML with a single container running the nginx image on port 80.

📋 What You'll Learn

Create a YAML file with a Pod definition

Set the Pod name to web-server

Use the nginx image for the container

Expose container port 80

💡 Why This Matters

🌍 Real World

Kubernetes Pods are the smallest deployable units in Kubernetes. Defining Pods in YAML is essential for deploying applications in cloud environments.

💼 Career

DevOps engineers and cloud engineers often write and maintain Pod YAML files to manage application deployments and scaling.

1

Create the basic Pod structure

Create a YAML file with the root keys apiVersion, kind, and metadata. Set apiVersion to v1, kind to Pod, and metadata.name to web-server.

Kubernetes

# Your code here

Need a hint?

Use indentation for metadata and name keys.

2

Add the container specification

Add a spec section with a containers list. Inside the list, add a container with name set to nginx-container and image set to nginx.

Kubernetes

apiVersion: v1
kind: Pod
metadata:
  name: web-server
# Your code here

Need a hint?

Remember to use a dash - for list items under containers.

3

Expose the container port

Inside the container definition, add a ports list with one item that sets containerPort to 80.

Kubernetes

apiVersion: v1
kind: Pod
metadata:
  name: web-server
spec:
  containers:
  - name: nginx-container
    image: nginx
    # Your code here

Need a hint?

Use a dash - for the port item and indent properly.

4

Display the complete Pod YAML

Print the complete YAML content you created to verify the Pod definition.

Kubernetes

# Your code here

Need a hint?

Use a print statement with the full YAML content as a string.