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| Section | Weight | Objectives |
|---|---|---|
| Workloads & Scheduling | 15% | - Understand how to run multiple schedulers and configure scheduler policies - Understand DaemonSets - Use ConfigMaps and Secrets to configure applications - Understand resource limits and requests - Understand Deployments and rolling update/rollback - Use label selectors to schedule Pods - Understand Static Pods - Understand how scheduler works |
| Cluster Architecture, Installation & Configuration | 25% | - Create and manage Kubernetes clusters using kubeadm - Manage role based access control (RBAC) - Use Helm and Kustomize to install cluster components - Prepare underlying infrastructure for installing a Kubernetes cluster - Implement and configure a highly-available control plane - Understand CRDs, install and configure operators - Manage the lifecycle of Kubernetes clusters - Understand extension interfaces (CNI, CSI, CRI, etc.) |
| Storage | 10% | - Understand volume mode, access modes and reclaim policies - Understand persistent volume claims primitive - Understand Storage Classes and Persistent Volumes - Understand how to configure applications with persistent storage |
| Services & Networking | 20% | - Understand and use CoreDNS - Use ClusterIP, NodePort, LoadBalancer service types and endpoints - Define and enforce Network Policies - Use the Gateway API to manage Ingress traffic - Understand connectivity between Pods - Know how to use Ingress controllers and Ingress resources |
| Troubleshooting | 30% | - Troubleshoot networking - Evaluate cluster and node logging - Troubleshoot cluster component failure - Troubleshoot application failure - Manage container stdout & stderr logs - Understand how to monitor applications |
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NEW QUESTION # 13
Check to see how many worker nodes are ready (not including nodes tainted NoSchedule) and write the number to /opt/KUCC00104/kucc00104.txt.
Answer:
Explanation:
See the solution below.
Explanation
solution
NEW QUESTION # 14
Get the pods with labels env=dev and env=prod and output the labels as well
Answer:
Explanation:
kubectl get pods -l 'env in (dev,prod)' --show-labels
NEW QUESTION # 15
You must connect to the correct host.
Failure to do so may result in a zero score.
[candidate@base] $ ssh Cka000055
Task
Verify the cert-manager application which has been deployed to your cluster .
Using kubectl, create a list of all cert-manager Custom Resource Definitions (CRDs ) and save it to ~/resources.yaml .
You must use kubectl 's default output format.
Do not set an output format.
Failure to do so will result in a reduced score.
Using kubectl, extract the documentation for the subject specification field of the Certificate Custom Resource and save it to ~/subject.yaml.
Answer:
Explanation:
Task Summary
You need to:
* SSH into the correct node: cka000055
* Use kubectl to list all cert-manager CRDs, and save that list to ~/resources.yaml
* Do not use any output format flags like -o yaml
* Extract the documentation for the spec.subject field of the Certificate custom resource and save it to ~
/subject.yaml
Step-by-Step Instructions
Step 1: SSH into the node
ssh cka000055
Step 2: List cert-manager CRDs and save to a file
First, identify all cert-manager CRDs:
kubectl get crds | grep cert-manager
Then extract them without specifying an output format:
kubectl get crds | grep cert-manager | awk '{print $1}' | xargs kubectl get crd > ~/resources.yaml This saves the default kubectl get output to the required file without formatting flags.
Step 3: Get documentation for spec.subject in the Certificate CRD
Run the following command:
kubectl explain certificate.spec.subject > ~/subject.yaml
This extracts the field documentation and saves it to the specified file.
If you're not sure of the resource, verify it exists:
kubectl get crd certificates.cert-manager.io
Final Command Summary
ssh cka000055
kubectl get crds | grep cert-manager | awk '{print $1}' | xargs kubectl get crd > ~/resources.yaml kubectl explain certificate.spec.subject > ~/subject.yaml
NEW QUESTION # 16
List "nginx-dev" and "nginx-prod" pod and delete those pods
Answer:
Explanation:
kubect1 get pods -o wide
kubectl delete po "nginx-dev" kubectl delete po "nginx-prod"
NEW QUESTION # 17
Ensure a single instance of pod nginx is running on each node of the Kubernetes cluster where nginx also represents the Image name which has to be used. Do not override any taints currently in place.
Use DaemonSet to complete this task and use ds-kusc00201 as DaemonSet name.
Answer:
Explanation:
See the solution below.
Explanation
solution
F:\Work\Data Entry Work\Data Entry\20200827\CKA\3 B.JPG
F:\Work\Data Entry Work\Data Entry\20200827\CKA\3 C.JPG
F:\Work\Data Entry Work\Data Entry\20200827\CKA\3 D.JPG
F:\Work\Data Entry Work\Data Entry\20200827\CKA\3 E.JPG
NEW QUESTION # 18
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