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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Cluster Architecture, Installation & Configuration | 25% | - Install components via Helm / Kustomize - Implement high availability control plane - Manage cluster lifecycle and upgrades - Create and manage clusters with kubeadm - Manage RBAC - Understand CNI, CSI, CRI interfaces - Prepare infrastructure for cluster installation - Work with CRDs and Operators |
| Topic 2: Services & Networking | 20% | - Service types: ClusterIP, NodePort, LoadBalancer, ExternalName - CoreDNS and service discovery - Ingress resources and controllers - CNI configuration and troubleshooting - Network policies |
| Topic 3: Troubleshooting | 30% | - Pod and application failures - Control plane component failures - Log collection and analysis - Network connectivity and DNS resolution problems - Worker node issues and recovery - Cluster component health checks |
| Topic 4: Storage | 10% | - StatefulSet storage configuration - Persistent Volumes (PV) and Persistent Volume Claims (PVC) - Volume types and access modes - StorageClasses and dynamic provisioning |
| Topic 5: Workloads & Scheduling | 15% | - Pod lifecycle, init containers, probes - Deployments, rolling updates and rollbacks - Configure applications with ConfigMaps and Secrets - Resource requests, limits and autoscaling - Pod scheduling: node selector, affinity, taints/tolerations |
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NEW QUESTION # 44
Given a partially-functioning Kubernetes cluster, identify symptoms of failure on the cluster.
Determine the node, the failing service, and take actions to bring up the failed service and restore the health of the cluster. Ensure that any changes are made permanently.
You can ssh to the relevant I nodes (
[student@node-1] $ ssh <nodename
You can assume elevated privileges on any node in the cluster with the following command:
[student@nodename] $ | sudo -i
Answer:
Explanation:
See the solution below.
Explanation
solution
F:\Work\Data Entry Work\Data Entry\20200827\CKA\23 C.JPG
F:\Work\Data Entry Work\Data Entry\20200827\CKA\23 D.JPG
F:\Work\Data Entry Work\Data Entry\20200827\CKA\23 E.JPG
NEW QUESTION # 45
Label a node as app=test and verify
Answer:
Explanation:
kubectl label node node-name app=test // Verify kubectl get no -show-labels kubectl get no -l app=test
NEW QUESTION # 46
Scale down the deployment to 1 replica
Answer:
Explanation:
kubectl scale deployment webapp -replicas=1 //Verify kubectl get deploy kubectl get po,rs
NEW QUESTION # 47
You must connect to the correct host.
Failure to do so may result in a zero score.
[candidate@base] $ ssh Cka000060
Task
Install Argo CD in the cluster by performing the following tasks:
Add the official Argo CD Helm repository with the name argo
The Argo CD CRDs have already been pre-installed in the cluster
Generate a template of the Argo CD Helm chart version 7.7.3 for the argocd namespace and save it to ~/argo- helm.yaml . Configure the chart to not install CRDs.
Answer:
Explanation:
Task Summary
* SSH into cka000060
* Add the Argo CD Helm repo named argo
* Generate a manifest (~/argo-helm.yaml) for Argo CD version 7.7.3
* Target namespace: argocd
* Do not install CRDs
* Just generate, don't install
# Step-by-Step Solution
1## SSH into the correct host
ssh cka000060
## Required - skipping this = zero score
2## Add the Argo CD Helm repository
helm repo add argo https://argoproj.github.io/argo-helm
helm repo update
# This adds the official Argo Helm chart source.
3## Generate Argo CD Helm chart template (version 7.7.3)
Use the helm template command to generate a manifest and write it to ~/argo-helm.yaml.
helm template argocd argo/argo-cd \
--version 7.7.3 \
--namespace argocd \
--set crds.install=false \
> ~/argo-helm.yaml
* argocd # Release name (can be anything; here it's same as the namespace)
* --set crds.install=false # Disables CRD installation
* > ~/argo-helm.yaml # Save to required file
# 4## Verify the generated file (optional but smart)
head ~/argo-helm.yaml
Check that it contains valid Kubernetes YAML and does not include CRDs.
# Final Command Summary
ssh cka000060
helm repo add argo https://argoproj.github.io/argo-helm
helm repo update
helm template argocd argo/argo-cd \
--version 7.7.3 \
--namespace argocd \
--set crds.install=false \
> ~/argo-helm.yaml
head ~/argo-helm.yaml # Optional verification
NEW QUESTION # 48
Create a snapshot of the etcd instance running at https://127.0.0.1:2379, saving the snapshot to the file path
/srv/data/etcd-snapshot.db.
The following TLS certificates/key are supplied for connecting to the server with etcdctl:
CA certificate: /opt/KUCM00302/ca.crt
Client certificate: /opt/KUCM00302/etcd-client.crt
Client key: Topt/KUCM00302/etcd-client.key
Answer:
Explanation:
See the solution below.
Explanation
solution
F:\Work\Data Entry Work\Data Entry\20200827\CKA\18 C.JPG
NEW QUESTION # 49
......
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