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| Section | Weight | Objectives |
|---|---|---|
| Storage | 10% | - PersistentVolumes and PersistentVolumeClaims - Storage classes |
| Troubleshooting | 30% | - Cluster component troubleshooting - Application and networking debugging |
| Cluster Architecture, Installation & Configuration | 25% | - High availability setup - Kubernetes architecture components - Cluster installation and configuration |
| Services & Networking | 20% | - Network policies - Ingress configuration - Services (ClusterIP, NodePort, LoadBalancer) |
| Workloads & Scheduling | 15% | - Scheduling constraints - ConfigMaps and Secrets - Deployments and rolling updates |
>> Reliable CKA Exam Topics <<
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NEW QUESTION # 61
You have a Deployment named 'my-app-deployment' running a web application. The Deployment's Service is exposed using a NodePort service. You need to configure a new Ingress resource that allows traffic to reach the web application through a specific domain name. How would you set up the Ingress configuration?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Install the Ingress Controller:
- If you haven't already, install an Ingress controller. Common options include:
- NGINX Ingress Controller: [https://kubernetes.github.io/ingress-nginx/](https://kubernetes.github.io/ingress- nginx/)
- Traefik Ingress Controller: [https://traefik.io[](https://traefik.io/)
2. Create an Ingress Resource:
- Create a new Ingress resource using the following YAML structure, replacing the placeholders with your actual values:
3. Configure DNS: - Create a DNS record for your domain 'my-app.example.com' pointing to the IP address of your Ingress controller. This can be either a LoadBalancer service IP or the Ingress controller's pod IP if you're using NodePort. 4. Verify Ingress Setup: - Once the DNS records are propagated, you should be able to access your web application through the configured domain name 'my-app.example.com'.
NEW QUESTION # 62
Score: 4%
Task
Create a persistent volume with name app-data , of capacity 1Gi and access mode ReadOnlyMany. The type of volume is hostPath and its location is /srv/app-data .
Answer:
Explanation:
Solution:
#vi pv.yaml
apiVersion: v1
kind: PersistentVolume
metadata:
name: app-config
spec:
capacity:
storage: 1Gi
accessModes:
- ReadOnlyMany
hostPath:
path: /srv/app-config
#
kubectl create -f pv.yaml
NEW QUESTION # 63
Create a busybox pod that runs the command "env" and save the output to "envpod" file
Answer:
Explanation:
kubectl run busybox --image=busybox --restart=Never --rm -it -- env > envpod.yaml
NEW QUESTION # 64
Score:7%
Context
An existing Pod needs to be integrated into the Kubernetes built-in logging architecture (e. g. kubectl logs). Adding a streaming sidecar container is a good and common way to accomplish this requirement.
Task
Add a sidecar container named sidecar, using the busybox Image, to the existing Pod big-corp-app. The new sidecar container has to run the following command:
/bin/sh -c tail -n+1 -f /va r/log/big-corp-app.log
Use a Volume, mounted at /var/log, to make the log file big-corp-app.log available to the sidecar container.
Answer:
Explanation:
Solution:
#
kubectl get pod big-corp-app -o yaml
#
apiVersion: v1
kind: Pod
metadata:
name: big-corp-app
spec:
containers:
- name: big-corp-app
image: busybox
args:
- /bin/sh
- -c
- >
i=0;
while true;
do
echo "$(date) INFO $i" >> /var/log/big-corp-app.log;
i=$((i+1));
sleep 1;
done
volumeMounts:
- name: logs
mountPath: /var/log
- name: count-log-1
image: busybox
args: [/bin/sh, -c, 'tail -n+1 -f /var/log/big-corp-app.log']
volumeMounts:
- name: logs
mountPath: /var/log
volumes:
- name: logs
emptyDir: {
}
#
kubectl logs big-corp-app -c count-log-1
NEW QUESTION # 65
List the nginx pod with custom columns POD_NAME and POD_STATUS
Answer:
Explanation:
kubectl get po -o=custom-columns="POD_NAME:.metadata.name, POD_STATUS:.status.containerStatuses[].state"
NEW QUESTION # 66
......
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