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| Section | Weight | Objectives |
|---|---|---|
| Workloads & Scheduling | 15% | - ConfigMaps and Secrets - Scheduling constraints - Deployments and rolling updates |
| Services & Networking | 20% | - Ingress configuration - Services (ClusterIP, NodePort, LoadBalancer) - Network policies |
| Storage | 10% | - PersistentVolumes and PersistentVolumeClaims - Storage classes |
| Cluster Architecture, Installation & Configuration | 25% | - High availability setup - Cluster installation and configuration - Kubernetes architecture components |
| Troubleshooting | 30% | - Cluster component troubleshooting - Application and networking debugging |
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NEW QUESTION # 34
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:
solution
NEW QUESTION # 35
You have a multi-cluster Kubernetes environment, and you need to implement cross-cluster communication between two clusters named 'cluster 1 and 'cluster?. You need to use CoreDNS to resolve service names across clusters. For example, a pod in cluster 1' should be able to access a service named 'my- service' running in 'cluster2'.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Install CoreDNS in Both Clusters:
- Follow the steps in the previous solution to install and configure CoreDNS in both 'cluster 1 ' and 'cluster?.
2. Configure Cross-Cluster DNS in CoreDNS:
- In 'cluster 1 ' , modify the CoreDNS configuration file to forward requests for services in 'cluster? to the CoreDNS service in 'cluster?.
- Repeat the same configuration for 'cluster2' , forwarding requests for services in 'cluster 1 ' to the CoreDNS service in 'clusterl'. 3. Configure Services with External Names: - In 'cluster? , configure the 'my-service' service to have an 'externalName' field set to 'my- service.clusterl .locar. This will tell CoreDNS to forward requests for 'my-service' to the CoreDNS service in 'cluster 1'.
4. Test Cross-Cluster Communication: - Deploy a pod in 'cluster 1 ' that tries to access 'my-service' in 'cluster?. - Verify that the pod can successfully communicate with the service in 'cluster? using its service name.
NEW QUESTION # 36
You are managing a Kubernetes cluster with a very specific RBAC setup.
- Users in the "engineering" group can create Pods in the "dev" namespace, but only if the Pod's name starts with "frontend".
- Users in the "security" group can view events in the "prod" namespace, but only if the event's reason is "Failed".
Create a YAML file to define a custom resource and define its permissions for the "engineering" and "security" groups.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1 Create the "dev" and "prod" namespaces:
kubectl create namespace dev
kubectl create namespace prod
2. Define a Custom Resource Definition (CRD) for "pod-events":
3. Define the "engineering-pod-creation" role:
4. Create the "engineering-pod-creation" role binding:
5. Define the "security-event-view" role:
6. Create the "security-event-view" role binding:
7. Apply the YAML file to the cluster: kubectl apply -f rbac-config.yaml
NEW QUESTION # 37
You have two Kubernetes clusters, 'cluster 1' and 'cluster2, and you need to establish a connection between the two clusters using a NetworkPolicy. You want to allow all traffic from pods in 'cluster 1' to pods in 'cluster? , and you need to implement this using an Ingress rule. What steps are required to configure this connection?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1 . Create a NetworkPolicy in 'cluster?
- Create a NetworkPolicy in 'cluster? that allows all traffic from pods in 'cluster 1'
- Code:
2. Create an Ingress in 'cluster2: - Create an Ingress in 'cluster? that routes traffic from 'clusterl' to the appropriate services or pods in cluster?. - Code:
3. Apply the Configurations: - Apply the NetworkPolicy and Ingress resources to the respective clusters using 'kubectl apply -f networkpolicy.yaml' and 'kubectl apply -f ingress.yaml'.
NEW QUESTION # 38
List all the pods sorted by name
Answer:
Explanation:
kubect1 get pods --sort-by=.metadata.name
NEW QUESTION # 39
......
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