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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Services & Networking | 20% | - Use the Gateway API to manage Ingress traffic - Define and enforce Network Policies - Understand and use CoreDNS - Use ClusterIP, NodePort, LoadBalancer service types and endpoints - Know how to use Ingress controllers and Ingress resources - Understand connectivity between Pods |
| Topic 2: Workloads & Scheduling | 15% | - Understand how scheduler works - Understand resource limits and requests - Understand how to run multiple schedulers and configure scheduler policies - Understand Deployments and rolling update/rollback - Use label selectors to schedule Pods - Understand DaemonSets - Understand Static Pods - Use ConfigMaps and Secrets to configure applications |
| Topic 3: Troubleshooting | 30% | - Troubleshoot cluster component failure - Understand how to monitor applications - Troubleshoot networking - Evaluate cluster and node logging - Manage container stdout & stderr logs - Troubleshoot application failure |
| Topic 4: Storage | 10% | - Understand how to configure applications with persistent storage - Understand persistent volume claims primitive - Understand Storage Classes and Persistent Volumes - Understand volume mode, access modes and reclaim policies |
| Topic 5: Cluster Architecture, Installation & Configuration | 25% | - Understand CRDs, install and configure operators - Manage role based access control (RBAC) - Use Helm and Kustomize to install cluster components - Prepare underlying infrastructure for installing a Kubernetes cluster - Understand extension interfaces (CNI, CSI, CRI, etc.) - Manage the lifecycle of Kubernetes clusters - Implement and configure a highly-available control plane - Create and manage Kubernetes clusters using kubeadm |
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NEW QUESTION # 65
Create a pod as follows:
* Name: mongo
* Using Image: mongo
* In a new Kubernetes namespace named
Answer:
Explanation:
See the solution below.
Explanation
solution
NEW QUESTION # 66
You need to schedule a pod to run only on nodes that have specific hardware resources, such as a certain amount of memory or a particular GPU type. Explain how you can use node affinity to achieve this.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Define the Node Affinity: Add an 'affinity' section to the 'spec.template.spec' section of your pod definition YAML file.
2. Set 'nodeSelectorTerms': In the 'nodeAffinity' section, specify requiredDuringSchedulinglgnoredDuringExecutioru to indicate that the node affinity rule must be met during pod scheduling. Within 'nodeSelectorTerms' , use 'matchExpressions' to match the node label 'kubernetes.io/hostname' to the value 'my-gpu-node'. Replace "my-gpu-node" with the actual hostname of the node that has the required resources. 3. Apply the Pod: Apply the YAML file to your cluster using 'kubectl apply -f my-resource-intensive-pod.yaml' Kubernetes will attempt to schedule the pod only on the node labeled 'my-gpu-node'. If the node is unavailable or if no nodes have the required labels, the pod will remain in a pending state until a suitable node becomes available.
NEW QUESTION # 67 
Task
Create a new Ingress resource as follows:
. Name: echo
. Namespace : sound-repeater
. Exposing Service echoserver-service on
http://example.org/echo
using Service port 8080
The availability of Service
echoserver-service can be checked
i
using the following command, which should return 200 :
[candidate@cka000024] $ curl -o /de v/null -s -w "%{http_code}\n"
http://example.org/echo
Answer:
Explanation:
Task Summary
Create an Ingress named echo in the sound-repeater namespace that:
* Routes requests to /echo on host example.org
* Forwards traffic to service echoserver-service
* Uses service port 8080
* Verification should return HTTP 200 using curl
# Step-by-Step Answer
1## SSH into the correct node
As shown in the image:
bash
CopyEdit
ssh cka000024
## Skipping this will result in a ZERO score!
2## Verify the namespace and service
Ensure the sound-repeater namespace and echoserver-service exist:
kubectl get svc -n sound-repeater
Look for:
echoserver-service ClusterIP ... 8080/TCP
3## Create the Ingress manifest
Create a YAML file: echo-ingress.yaml
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: echo
namespace: sound-repeater
annotations:
nginx.ingress.kubernetes.io/rewrite-target: /$1
spec:
rules:
- host: example.org
http:
paths:
- path: /echo
pathType: Prefix
backend:
service:
name: echoserver-service
port:
number: 8080
4## Apply the Ingress resource
kubectl apply -f echo-ingress.yaml
5## Test with curl as instructed
Use the exact verification command:
curl -o /dev/null -s -w "%{http_code}\n"
http://example.org/echo
# You should see:
200
# Final Answer Summary
ssh cka000024
kubectl get svc -n sound-repeater
# Create the Ingress YAML
cat <<EOF > echo-ingress.yaml
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: echo
namespace: sound-repeater
annotations:
nginx.ingress.kubernetes.io/rewrite-target: /$1
spec:
rules:
- host: example.org
http:
paths:
- path: /echo
pathType: Prefix
backend:
service:
name: echoserver-service
port:
number: 8080
EOF
kubectl apply -f echo-ingress.yaml
curl -o /dev/null -s -w "%{http_code}\n"
http://example.org/echo
NEW QUESTION # 68
Get IP address of the pod - "nginx-dev"
Answer: A
NEW QUESTION # 69
Score: 5%
Task
Monitor the logs of pod bar and:
* Extract log lines corresponding to error file-not-found
* Write them to /opt/KUTR00101/bar
Answer:
Explanation:
Solution:
kubectl logs bar | grep 'unable-to-access-website' > /opt/KUTR00101/bar cat /opt/KUTR00101/bar
NEW QUESTION # 70
......
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