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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Services & Networking | 20% | - Network policies - Service types: ClusterIP, NodePort, LoadBalancer, ExternalName - Ingress resources and controllers - CNI configuration and troubleshooting - CoreDNS and service discovery |
| Topic 2: Troubleshooting | 30% | - Network connectivity and DNS resolution problems - Pod and application failures - Log collection and analysis - Worker node issues and recovery - Control plane component failures - Cluster component health checks |
| Topic 3: Storage | 10% | - Volume types and access modes - StorageClasses and dynamic provisioning - Persistent Volumes (PV) and Persistent Volume Claims (PVC) - StatefulSet storage configuration |
| Topic 4: Cluster Architecture, Installation & Configuration | 25% | - Implement high availability control plane - Prepare infrastructure for cluster installation - Manage RBAC - Manage cluster lifecycle and upgrades - Understand CNI, CSI, CRI interfaces - Install components via Helm / Kustomize - Create and manage clusters with kubeadm - Work with CRDs and Operators |
| Topic 5: Workloads & Scheduling | 15% | - Deployments, rolling updates and rollbacks - Resource requests, limits and autoscaling - Configure applications with ConfigMaps and Secrets - Pod lifecycle, init containers, probes - Pod scheduling: node selector, affinity, taints/tolerations |
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NEW QUESTION # 72
Update the deployment with the image version 1.16.1 and verify the image and check the rollout history
Answer:
Explanation:
kubectl set image deploy/webapp nginx=nginx:1.16.1 kubectl describe deploy webapp | grep Image kubectl rollout history deploy webapp
NEW QUESTION # 73
You need to expose a service with multiple endpoints, each serving a specific path, using a single Ingress resource. Each endpoint is running on a different port, and you want to configure SSL termination for the entire Ingress. How would you achieve this?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Define the Ingress Resource:
- Create an Ingress resource with the desired host and paths for each endpoint.
- Example:
- This configuration defines the host "example.com" and two paths: "/api" routed to "api-service" on port 8080 and "[blog" routed to "blog-service" on port 8081. 2. Create the TLS Secret: - Create a Secret containing your SSL certificate and private key for the domain "example.com". - Example:
- Replace " and with the actual content of your SSL certificate and private key. 3. Deploy the Services: - Ensure that the services "api-service" and "blog-service" are deployed and accessible on their respective ports (8080 and 8081 4. Apply the Ingress Configuration: - Apply the Ingress configuration using 'kubectl apply -f multiple-endpoints-ingress.yamP. 5. Verify the Ingress: - Access the Ingress using the defined host "example.com". - Check that requests to "/api" are routed to the "api-service" and requests to "[blog" are routed to the "blog- service", with SSL termination working as expected.
NEW QUESTION # 74
Create a persistent volume with name app-data, of capacity 2Gi and access mode ReadWriteMany. The type of volume is hostPath and its location is /srv/app-data.
Answer:
Explanation:
See the solution below.
Explanation
solution
Persistent Volume
A persistent volume is a piece of storage in a Kubernetes cluster. PersistentVolumes are a cluster-level resource like nodes, which don't belong to any namespace. It is provisioned by the administrator and has a particular file size. This way, a developer deploying their app on Kubernetes need not know the underlying infrastructure. When the developer needs a certain amount of persistent storage for their application, the system administrator configures the cluster so that they consume the PersistentVolume provisioned in an easy way.
Creating Persistent Volume
kind: PersistentVolumeapiVersion: v1metadata: name:app-dataspec: capacity: # defines the capacity of PV we are creating storage: 2Gi #the amount of storage we are tying to claim accessModes: # defines the rights of the volume we are creating - ReadWriteMany hostPath: path: "/srv/app-data" # path to which we are creating the volume Challenge
* Create a Persistent Volume named ReadWriteMany, storage classname
shared, 2Gi of storage capacity and the host path
2. Save the file and create the persistent volume.
Image for post
3. View the persistent volume.
* Our persistent volume status is available meaning it is available and it has not been mounted yet. This status will change when we mount the persistentVolume to a persistentVolumeClaim.
PersistentVolumeClaim
In a real ecosystem, a system admin will create the PersistentVolume then a developer will create a PersistentVolumeClaim which will be referenced in a pod. A PersistentVolumeClaim is created by specifying the minimum size and the access mode they require from the persistentVolume.
Challenge
* Create a Persistent Volume Claim that requests the Persistent Volume we had created above. The claim should request 2Gi. Ensure that the Persistent Volume Claim has the same storageClassName as the persistentVolume you had previously created.
kind: PersistentVolumeapiVersion: v1metadata: name:
spec:
accessModes: - ReadWriteMany
requests: storage: 2Gi
storageClassName: shared
2. Save and create the pvc
njerry191@cloudshell:~ (extreme-clone-2654111)$ kubect1 create -f app-data.yaml persistentvolumeclaim/app-data created
3. View the pvc
Image for post
4. Let's see what has changed in the pv we had initially created.
Image for post
Our status has now changed from available to bound.
5. Create a new pod named myapp with image nginx that will be used to Mount the Persistent Volume Claim with the path /var/app/config.
Mounting a Claim
apiVersion: v1kind: Podmetadata: creationTimestamp: null name: app-dataspec: volumes: - name:congigpvc persistenVolumeClaim: claimName: app-data containers: - image: nginx name: app volumeMounts: - mountPath: "/srv/app-data " name: configpvc
NEW QUESTION # 75
What are the differences between using a service versus using an application for Security Policy match?
Answer: A
NEW QUESTION # 76
Score: 4%
Task
Schedule a pod as follows:
* Name: nginx-kusc00401
* Image: nginx
* Node selector: disk=ssd
Answer:
Explanation:
Solution:
#yaml
apiVersion: v1
kind: Pod
metadata:
name: nginx-kusc00401
spec:
containers:
- name: nginx
image: nginx
imagePullPolicy: IfNotPresent
nodeSelector:
disk: spinning
#
kubectl create -f node-select.yaml
NEW QUESTION # 77
......
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