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| Section | Weight | Objectives |
|---|---|---|
| Services & Networking | 20% | - Know how to use Ingress controllers and Ingress resources - Define and enforce Network Policies - Understand connectivity between Pods - Understand and use CoreDNS - Use the Gateway API to manage Ingress traffic - Use ClusterIP, NodePort, LoadBalancer service types and endpoints |
| Troubleshooting | 30% | - Evaluate cluster and node logging - Troubleshoot application failure - Troubleshoot networking - Understand how to monitor applications - Troubleshoot cluster component failure - Manage container stdout & stderr logs |
| Storage | 10% | - Understand how to configure applications with persistent storage - Understand Storage Classes and Persistent Volumes - Understand volume mode, access modes and reclaim policies - Understand persistent volume claims primitive |
| Cluster Architecture, Installation & Configuration | 25% | - Manage role based access control (RBAC) - Create and manage Kubernetes clusters using kubeadm - Use Helm and Kustomize to install cluster components - Implement and configure a highly-available control plane - Prepare underlying infrastructure for installing a Kubernetes cluster - Understand extension interfaces (CNI, CSI, CRI, etc.) - Understand CRDs, install and configure operators - Manage the lifecycle of Kubernetes clusters |
| Workloads & Scheduling | 15% | - Understand Deployments and rolling update/rollback - Understand how to run multiple schedulers and configure scheduler policies - Use label selectors to schedule Pods - Use ConfigMaps and Secrets to configure applications - Understand how scheduler works - Understand Static Pods - Understand DaemonSets - Understand resource limits and requests |
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NEW QUESTION # 21
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 # 22
Create a pod that echo "hello world" and then exists. Have the pod deleted automatically when it's completed
Answer:
Explanation:
kubectl run busybox --image=busybox -it --rm --restart=Never --
/bin/sh -c 'echo hello world'
kubectl get po # You shouldn't see pod with the name "busybox"
NEW QUESTION # 23
Create a Pod nginx and specify a CPU request and a CPU limit of 0.5 and 1 respectively.
Answer: B
NEW QUESTION # 24
You are running a MySQL database on a Kubernetes cluster. You want to ensure that your database data is persistent even if a pod is deleted or restarted. You need to create a PersistentVolumeClaim (PVC) to request a specific storage class with a 1 OGB capacity, access mode of 'ReadWriteOnce', and storage class of 'fast-storage'. Explain the configuration and how to create the PVC and then use the PVC to create a StatefulSet for your MySQL deployment.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create a PersistentVolumeClaim:
- Create a YAML file named 'mysql-pvc.yaml' with the following content:
- Apply the YAML file using 'kubectl apply -f mysql-pvc.yamP. 2. Create a StatefulSet for MySQL Deployment: - Create a YAML file named 'mysql-statefulset.yaml' with the following content:
- Apply the YAML file using 'kubectl apply -f mysql-statefulset.yaml'. 3. Verify Deployment: - Check the status of the StatefulSet using 'kubectl get statefulsets mysql'. - Ensure that the pod is running and the PVC is mounted correctly. You can use 'kubectl describe pod mysql-0' to see the details of the pod and the mounted PVC.
NEW QUESTION # 25
Create a file:
/opt/KUCC00302/kucc00302.txt that lists all pods that implement service baz in namespace development.
The format of the file should be one pod name per line.
Answer:
Explanation:
See the solution below.
Explanation
solution
F:\Work\Data Entry Work\Data Entry\20200827\CKA\11 B.JPG
F:\Work\Data Entry Work\Data Entry\20200827\CKA\11 C.JPG
F:\Work\Data Entry Work\Data Entry\20200827\CKA\11 D.JPG
NEW QUESTION # 26
......
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