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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Cluster Architecture, Installation & Configuration | 25% | - Implement and configure a highly-available control plane - Create and manage Kubernetes clusters using kubeadm - Use Helm and Kustomize to install cluster components - Understand CRDs, install and configure operators - Understand extension interfaces (CNI, CSI, CRI, etc.) - Manage role based access control (RBAC) - Manage the lifecycle of Kubernetes clusters - Prepare underlying infrastructure for installing a Kubernetes cluster |
| Topic 2: Services & Networking | 20% | - Use ClusterIP, NodePort, LoadBalancer service types and endpoints - Define and enforce Network Policies - Use the Gateway API to manage Ingress traffic - Know how to use Ingress controllers and Ingress resources - Understand connectivity between Pods - Understand and use CoreDNS |
| Topic 3: Workloads & Scheduling | 15% | - Use ConfigMaps and Secrets to configure applications - Understand how scheduler works - Understand Static Pods - Understand resource limits and requests - Understand how to run multiple schedulers and configure scheduler policies - Understand Deployments and rolling update/rollback - Use label selectors to schedule Pods - Understand DaemonSets |
| Topic 4: Storage | 10% | - Understand how to configure applications with persistent storage - Understand Storage Classes and Persistent Volumes - Understand persistent volume claims primitive - Understand volume mode, access modes and reclaim policies |
| Topic 5: Troubleshooting | 30% | - Evaluate cluster and node logging - Troubleshoot networking - Troubleshoot application failure - Troubleshoot cluster component failure - Manage container stdout & stderr logs - Understand how to monitor applications |
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NEW QUESTION # 31
Check nodes which are ready and print it to a file /opt/nodestatus
Answer: B
NEW QUESTION # 32
Score: 7%
Task
Create a new NetworkPolicy named allow-port-from-namespace in the existing namespace echo. Ensure that the new NetworkPolicy allows Pods in namespace my-app to connect to port 9000 of Pods in namespace echo.
Further ensure that the new NetworkPolicy:
* does not allow access to Pods, which don't listen on port 9000
* does not allow access from Pods, which are not in namespace my-app
Answer:
Explanation:
Solution:
#network.yaml
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: allow-port-from-namespace
namespace: internal
spec:
podSelector:
matchLabels: {
}
policyTypes:
- Ingress
ingress:
- from:
- podSelector: {
}
ports:
- protocol: TCP
port: 8080
#spec.podSelector namespace pod
kubectl create -f network.yaml
NEW QUESTION # 33
Monitor the logs of pod foo and:
* Extract log lines corresponding unable-to-access-website
* Write them to/opt/KULM00201/foo
Answer:
Explanation:
See the solution below.
Explanation
solution
NEW QUESTION # 34
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 # 35
Explain the concept of "volume mode" for PersistentVolumes and how it differs between "Block" and "Filesystem" mode. Provide examples of when each mode would be most suitable.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
Volume Mode:
The volume mode defines how a PersistentVolume is presented to the pods. It specifies whether the volume is exposed as a block device or a file system.
Block Mode:
- Description: Presents the volume as a block device directly to the pod. This allows for low-level access and control over the storage.
- Suitable for:
- Databases requiring direct block access (e.g., MySQL, PostgreSQL)
- Applications that need to directly manage the storage layout
- High-performance storage scenarios where low-level access is beneficial Filesystem Mode:
- Description: Presents the volume as a file system to the pod. This allows for accessing the storage through standard file system operations.
- Suitable for:
- General-purpose applications requiring file system-based storage
- Applications that store data in files and directories (e.g., web servers, application code)
- Scenarios where simplicity and ease of use are prioritized
Example:
- Block Mode: A MySQL database pod would utilize a block volume to ensure low-level control over the storage, optimize performance, and manage data files efficiently.
- Filesystem Mode: A web server pod storing website files and logs would typically use a file system volume for ease of access and management.
NEW QUESTION # 36
......
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