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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Services & Networking | 20% | - Understand connectivity between Pods - Define and enforce Network Policies - Know how to use Ingress controllers and Ingress resources - Understand and use CoreDNS - Use ClusterIP, NodePort, LoadBalancer service types and endpoints - Use the Gateway API to manage Ingress traffic |
| Topic 2: Workloads & Scheduling | 15% | - Use label selectors to schedule Pods - Understand DaemonSets - Understand how scheduler works - Understand how to run multiple schedulers and configure scheduler policies - Understand resource limits and requests - Understand Deployments and rolling update/rollback - Use ConfigMaps and Secrets to configure applications - Understand Static Pods |
| Topic 3: Troubleshooting | 30% | - Troubleshoot application failure - Troubleshoot networking - Troubleshoot cluster component failure - Manage container stdout & stderr logs - Understand how to monitor applications - Evaluate cluster and node logging |
| Topic 4: Cluster Architecture, Installation & Configuration | 25% | - Use Helm and Kustomize to install cluster components - Prepare underlying infrastructure for installing a Kubernetes cluster - Manage role based access control (RBAC) - Implement and configure a highly-available control plane - Understand extension interfaces (CNI, CSI, CRI, etc.) - Manage the lifecycle of Kubernetes clusters - Create and manage Kubernetes clusters using kubeadm - Understand CRDs, install and configure operators |
| Topic 5: Storage | 10% | - Understand volume mode, access modes and reclaim policies - Understand Storage Classes and Persistent Volumes - Understand how to configure applications with persistent storage - Understand persistent volume claims primitive |
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NEW QUESTION # 68
Create a deployment spec file that will:
* Launch 7 replicas of the nginx Image with the labelapp_runtime_stage=dev
* deployment name: kual00201
Save a copy of this spec file to /opt/KUAL00201/spec_deployment.yaml
(or /opt/KUAL00201/spec_deployment.json).
When you are done, clean up (delete) any new Kubernetes API object that you produced during this task.
Answer:
Explanation:
NEW QUESTION # 69
Set the node named ek8s-node-1 as unavailable and reschedule all the pods running on it.
Answer:
Explanation:
See the solution below.
Explanation
solution
NEW QUESTION # 70
Score: 4%
Context
You have been asked to create a new ClusterRole for a deployment pipeline and bind it to a specific ServiceAccount scoped to a specific namespace.
Task
Create a new ClusterRole named deployment-clusterrole, which only allows to create the following resource types:
* Deployment
* StatefulSet
* DaemonSet
Create a new ServiceAccount named cicd-token in the existing namespace app-team1.
Bind the new ClusterRole deployment-clusterrole lo the new ServiceAccount cicd-token , limited to the namespace app-team1.
Answer:
Explanation:
See the solution below.
Explanation
Solution:
Task should be complete on node -1 master, 2 worker for this connect use command
[student@node-1] > ssh k8s
kubectl create clusterrole deployment-clusterrole --verb=create
--resource=deployments,statefulsets,daemonsets
kubectl create serviceaccount cicd-token --namespace=app-team1
kubectl create rolebinding deployment-clusterrole --clusterrole=deployment-clusterrole
--serviceaccount=default:cicd-token --namespace=app-team1
NEW QUESTION # 71
You need to create a new role that allows users to create and delete pods, but only in the
'production' namespace. How would you define this role using the 'kubectl' command?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create a Role YAML file:
2. Apply the Role to the cluster: kubectl apply -f pod-admin . yaml 3. Create a RoleBinding to associate the Role with a user or group:
The 'Role' resource defines a set of permissions for a specific namespace. The 'rules' field defines the actions allowed for the role, specifying the API groups, resources, and verbs. The 'apiGroups' field lists the Kubernetes API groups relevant to the permissions. The 'resources' field specifies the Kubernetes resources that the user can access. The 'verbs' field lists the allowed actions for the specified resources. The 'RoleBinding' associates the created 'Role' with a specific user or group, granting them the specified permissions. In this case, the role is named "pod-admin" and is scoped to the 'production' namespace. The role allows users to create and delete pods, as well as perform other actions on related resources. This example demonstrates how to manage Role-Based Access Control (RBAC) in Kubernetes. You can adjust the permissions and bindings to fit your specific security requirements.,
NEW QUESTION # 72
You have a two-tier application with a frontend service 'frontend-svc' exposing a Node.js application running in pods labeled 'app: frontend', and a backend service 'backend-svc' exposing a Python application running in pods labeled 'app: backend'. The frontend pods need to communicate with the backend pods through a service. Design a Kubernetes network setup that allows the frontend pods to access the backend service, ensuring that the backend service is reachable only by the frontend service and not directly from outside the cluster.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create a Service for the Backend:
- Define a Service for the backend pods:
- This Service creates a ClusterlP service, accessible only within the cluster. The 'targetPort' specifies the port exposed by the backend pods. 2. Create a Service for the Frontend: - Define a Service for the frontend pods:
- This Service creates a LoadBalancer service, accessible from outside the cluster. 3. Configure NetworkPolicy for the Frontend Service: - Define a NetworkPolicy that allows traffic from the 'frontend-svc' to the 'backend-svc':
- This NetworkPolicy allows ingress traffic from the 'frontend-svc' and egress traffic to the 'backend-svc'. 4. Apply the Configurations: - Apply the YAML files using 'kubectl apply -f backend-svc.yaml' , 'kubectl apply -f frontend-svc.yamr , and kubectl apply -f frontend-to-backend.yamr. 5. Verification: - Check the status of the services: 'kubectl get services' - Check the network policy status: 'kubectl get networkpolicies' Now, the frontend pods can communicate with the backend service through the 'backend-svc' service. External clients can access the frontend application through the 'frontend-svc' service. The backend service is not accessible directly from outside the cluster due to the NetworkPolicy restricting traffic from external sources. ]
NEW QUESTION # 73
......
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