See the Explanation below for complete solution.
Explanation:
Do this on ckad00027 and edit the given manifest file (that's what the task expects).
0) Connect to correct host
ssh ckad00027
1) Open the manifest and identify the container + port
cd /home/candidate/spicy-pikachu
ls -l
sed -n '1,200p' app-deployment.yaml
Confirm the container port is 8081 in the YAML (usually under ports:).
2) Edit the YAML to add a readinessProbe
Edit the file:
vi app-deployment.yaml
Inside the Deployment, locate:
spec:
template:
spec:
containers:
- name: ...
image: ...
Add this under the container (same indentation level as image, ports, etc.):
readinessProbe:
httpGet:
path: /healthz
port: 8081
initialDelaySeconds: 6
periodSeconds: 3
Notes:
* Use port: 8081 (because the app runs on 8081).
* Ensure indentation is correct (2 spaces per level commonly).
Save and exit.
3) Apply the updated manifest
kubectl apply -f /home/candidate/spicy-pikachu/app-deployment.yaml
4) Ensure the Deployment rolls out successfully
kubectl -n prod rollout status deploy app-deployment
5) Verify the readiness probe is set
Check the probe from the live object:
kubectl -n prod get deploy app-deployment -o jsonpath='{.spec.template.spec.containers[0].readinessProbe}
{"\n"}'
And confirm pods are becoming Ready:
kubectl -n prod get pods -l app=app-deployment
If the label selector differs, just:
kubectl -n prod get pods
kubectl -n prod describe pod <pod-name> | sed -n '/Readiness:/,/Conditions:/p' That completes the task: readiness probe on /healthz, initialDelaySeconds: 6, periodSeconds: 3.

See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Specify Node.js Base Image:
- In your Dockerfile, start by selecting a Node.js base image from Docker Hub that matches the required version (v16.x).
- Example:
dockerfile
FROM node:16.x
2. Copy Application Code:
- Copy your Node.js application code into the Docker image.
- Example:
dockerfile
COPY
3. Install Dependencies:
- Use the 'RIJN' instruction to install any necessary Node.js dependencies using 'npm install'.
- Example:
dockerfile
RUN npm install
4. Define Startup Command:
- Specify the command to start your Node.js application within the Dockerfile_
- Example:
dockeffile
CMD ["npm", "start"]
5. Build and Deploy:
- Build your Docker image using the 'docker build' command.
- Deploy the image to your Kubernetes cluster using a Deployment or Pod.
- Ensure the container utilizes the specified Node.js version (v16.x).

See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create a Dockerfile:
- Create a new 'Dockerfile' with the following content

- Replace 'existing-image:latest' with the name of your current container image. - Replace 'requirements-txt' with the name of your file containing the list of Python libraries. 2. Build the Image: - Build the new image using the Dockerfile: docker build -t updated-image:latest 3. Update the Deployment - Modify your Deployment YAML file to use the newly built image:

4. Apply the Changes: - Apply the updated Deployment using Skubectl apply -f deployment.yamr. This will trigger a rolling update to the pods using the new image. 5. Verify the Update: - Check the logs of the pods using 'kubectl logs -f . You should see the application running with the installed libraries. 6. Test the Application: - Access your application and ensure it functions correctly with the new libraries.

See the solution below.
Explanation
Solution:

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