Tasks

1. Create a namespace called exercise-01

   Solution

   kubectl create namespace exercise-01

   Creates the namespace. All subsequent commands target this namespace with -n exercise-01. Reference lesson.

2. Create pod web in namespace exercise-01 with image nginx:1.28, labels app=web,tier=frontend, requests cpu=100m,memory=64Mi, limits cpu=250m,memory=128Mi

   ○
   Solution

   Generate a base manifest quickly:

   kubectl run web -n exercise-01 --image=nginx:1.28 --labels=app=web,tier=frontend --dry-run=client -o yaml > pod.yaml

   Then edit pod.yaml so it matches this final manifest:

   apiVersion: v1
   kind: Pod
   metadata:
     labels:
       app: web
       tier: frontend
     name: web
     namespace: exercise-01
   spec:
     containers:
       - image: nginx:1.28
         name: web
         resources:
           limits:
             cpu: 250m
             memory: 128Mi
           requests:
             cpu: 100m
             memory: 64Mi

   kubectl apply -f pod.yaml

   This step creates the pod with the expected metadata and resource constraints. Reference lesson.

3. Add label version=v1 and remove label tier from pod web

   ○
   Solution

   kubectl label pod web -n exercise-01 version=v1
   kubectl label pod web -n exercise-01 tier-

   Labels are mutable metadata, no pod restart is required. Reference lesson.

4. Optional clean up, delete the namespace

   Solution

   kubectl delete namespace exercise-01

   Deletes the namespace and everything inside it in one command.