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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Services & Networking | 20% | - Network policies - Ingress configuration - Services (ClusterIP, NodePort, LoadBalancer) |
| Topic 2: Troubleshooting | 30% | - Cluster component troubleshooting - Application and networking debugging |
| Topic 3: Storage | 10% | - PersistentVolumes and PersistentVolumeClaims - Storage classes |
| Topic 4: Workloads & Scheduling | 15% | - ConfigMaps and Secrets - Scheduling constraints - Deployments and rolling updates |
| Topic 5: Cluster Architecture, Installation & Configuration | 25% | - Kubernetes architecture components - Cluster installation and configuration - High availability setup |
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NEW QUESTION # 59
Schedule a pod as follows:
* Name: nginx-kusc00101
* Image: nginx
* Node selector: disk=ssd
Answer:
Explanation:
See the solution below.
Explanation
solution
NEW QUESTION # 60
You are working with a Kubernetes cluster that has been configured with RBAC. You need to create a deployment for a new application, but you are encountering permission issues. You have verified that your user account belongs to the "developers" group, which should have sufficient permissions to create deployments. However, you are receiving an error message indicating insufficient privileges.
Investigate the potential causes for the permission issue and provide solutions to resolve the problem.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
NEW QUESTION # 61
Create a deployment as follows:
* Name:nginx-random
* Exposed via a servicenginx-random
* Ensure that the service & podare accessible via theirrespective DNS records
* The container(s) within anypod(s) running as a part of thisdeployment should use thenginxImage Next, use the utilitynslookupto lookup the DNS records of the service &pod and write the output to
/opt/KUNW00601/service.dnsand/opt/KUNW00601/pod.dnsrespectively.
Answer:
Explanation:
See the solution below.
Explanation
Solution:
NEW QUESTION # 62
You are tasked with configuring RBAC for a Kubernetes cluster hosting a microservices application.
The application consists of three services:
- 'frontend' which only needs to access the 'nginx-ingress-controller' deployment to configure Ingress resources.
- 'backend' which needs read-only access to the 'postgres' service for database queries.
- 'worker' which needs to create, update, and delete pods in the 'worker-namespace' namespace and access the 'redis' service.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Create the necessary RBAC roles, role bindings, and service accounts to enable these permissions.
Solution (Step by Step) :
1 . Create Service Accounts:
kubectl create serviceaccount frontend-sa -n default
kubectl create serviceaccount backend-sa -n default
kubectl create serviceaccount worker-sa -n worker-namespace
2. Create Roles:
3. Create Role Bindings: kubectl create rolebinding frontend-binding -n default -role=frontend-role serviceaccount=default:frontend-sa kubectl create rolebinding backend-binding -n default --role=backend-role - serviceaccount=default:backend-sa kubectl create rolebinding worker-binding -n worker-namespace -role=worker-role - serviceaccount=worker- namespace:worker-sa 4. Grant Access to Services: Frontend: The 'frontend' service account should have access to the 'nginx-ingress-controller' deployment. This can be done through a Role or ClusterRole and RoleBinding or ClusterRoleBinding, depending on if the controller is in the same namespace or across namespaces. Backend: The 'backend' service account should have read-only access to the postgres' service. This can be achieved by creating a 'ServiceAccount' for the 'backend' service and binding it to a 'Role' that grants the necessary permissions on the 'postgres' service. Worker: The 'worker' service account should have full access (create, update, delete) to pods in the 'worker- namespace' and read access to the 'redis' service. Important Notes: - The provided 'kubectl' commands are illustrative. You may need to adjust them based on your specific cluster configuration. - The above RBAC configuration is a basic example. Depending on the specific needs of your application, you may need to configure more granular roles and bindings.
NEW QUESTION # 63
You are tasked with setting up a Kubernetes cluster for a company with a strict security policy. They have two different teams: Development and Operations, with distinct access requirements.
The Development team needs read-only access to all resources and the ability to create and manage deployments, pods, and services. The Operations team needs full access to all resources, including cluster management, and the ability to perform actions like scaling, rolling updates, and troubleshooting.
Design a role-based access control (RBAC) configuration using Kubernetes resources (Role, RoleBinding, ClusterRole, ClusterRoleBinding) to grant appropriate access to each team.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
Step 1: Create a Role for the Development team:
Step 2: Create a RoleBinding for the Development team:
Step 3: Create a ClusterRole for the Operations team:
Step 4: Create a ClusterRoleBinding for the Operations team:
The Role for the Development team grants specific permissions to create, manage, and view deployments, pods, and services. It also grants read-only access to all other resources. The RoleBinding links the "dev-role" to the "dev-user" account, allowing them to perform actions as defined by the Role. The ClusterRole for the Operations team provides full access to all cluster resources and allows them to perform any action, including cluster management tasks. The ClusterRoleBinding links the "ops-clusterrole" to the "ops-user" account, granting them complete control over the cluster. Note: You can replace "dev-user" and "ops-user" with actual user names or service accounts.
NEW QUESTION # 64
......
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