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| Section | Objectives |
|---|---|
| Application Environment, Configuration and Security | - ConfigMaps and Secrets usage - Security contexts and service accounts |
| State Persistence | - PersistentVolumes and PersistentVolumeClaims - Storage classes and volume mounting |
| Application Design and Build | - Understand Jobs and CronJobs - Define, build and modify container images - Understand multi-container Pod design patterns |
| Services and Networking | - Pod networking concepts - Ingress basics - Services (ClusterIP, NodePort) |
| Application Deployment | - Use Kubernetes primitives to implement deployments - Understand rolling updates and rollbacks |
| Application Observability and Maintenance | - Understand probes and health checks - Monitor and troubleshoot applications |
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NEW QUESTION # 80
You need to configure a Kubemetes Deployment to use a service account to access resources in a specific namespace. How can you create and assign a service account to your deployment, and how can you configure the service account to access resources in a different namespace?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create a Service Account:
- Create a service account in the namespace where your deployment will run:
- Apply this YAML file using: bash kubectl apply -f service-account-yaml 2 Create a Role and Role8inding: - Define a role in the target namespace that the service account should have access to:
- Create a RoleBinding to bind the role to the service account:
- Apply the Role and Role8inding YAML files using: bash kubectl apply -f role-yaml kubectl apply -f rolebinding.yaml 3. Modify your Deployment: - Update your Deployment YAML file to use the service account:
- Apply the updated deployment 4. Verify Access: - You can now use the service account to access resources in the target namespace. For example, you can create a pod that uses the service account and run a command to access resources.
NEW QUESTION # 81
You have a Helm cnan named 'my-app' that deploys a web application. The chan uses a 'service' and 'deployment' to expose the application. However, the chart currently deploys the application using a static 'image: my-app:v1.0.0' in the 'deployment section. How can you modify the Helm chan to dynamically pull the latest image tag from a Git tag tor the 'my-app' repository?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
I). Configure Git Tag as Image Tag:
- In your 'my-app/values.yamr, add a new variable to hold the desired Git tag:
2. Modify the Deployment Template:
3. Fetch Git Tag using 'helm template's - Before deploying the chart, use 'helm template to generate the template with the Git tag injected. Assuming your Git repository is named 'my-repo' and the tag iS 'vl.1.0', run: bash helm template my-app -set image-tag=$(git Is-remote --tags my-repo I grep vl .1.0 | awk '{print $2}' | cut -f3) 4. Deploy the Chart: - Now you can deploy the Helm chart using the generated template or by setting the 'image-tag' value directly in the 'helm install' command. For example: bash helm install my-app my-appl --set image.tag=S(git Is-remote -tags my-repo I grep v1.1.0 | awk '{print $2)' | cut -d'/' -f3) - When deploying, the chart will automatically use the specified Git tag as the image tag for the deployment.
NEW QUESTION # 82
You have a ConfigMap named 'database-config' tnat stores sensitive information for connecting to a database. You want to ensure that this ConfigMap is only accessible by a specific namespace and not by other namespaces in the cluster.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create a Namespace:
bash
kubectl create namespace my-database-namespace
2. Move the ConfigMap to the Namespace:
bash
kubectl move configmap database-config -n my-database-namespace
3. Configure Role-Based Access Control (RBAC):
- Create a Role:
- Create a RoleBinding:
- Replace 'my-service-account with the actual name of the service account that needs access to the ConfigMap. 4. Apply the Role and Role3inding: bash kubectl apply -f database-config-reader.yaml kubectl apply -f database-config-reader-binding.yaml 5. Verify Access: - From the 'my-database-namespace': bash kubectl get configmap database-config -n my-database-namespace The command should succeed as the service account in this namespace has the necessary permissions. - From a different namespace: bash kubectl get configmap database-config -n another-namespace This command should fail as the service account in this namespace does not have access to the ConfigMap. This solution uses RBAC to restrict access to the ConfigMap to only the service account in the 'my-database-namespace'. This ensures that sensitive information is only accessible by authorized entities within the cluster,
NEW QUESTION # 83
Context
Context
You have been tasked with scaling an existing deployment for availability, and creating a service to expose the deployment within your infrastructure.
Task
Start with the deployment named kdsn00101-deployment which has already been deployed to the namespace kdsn00101 . Edit it to:
* Add the func=webFrontEnd key/value label to the pod template metadata to identify the pod for the service definition
* Have 4 replicas
Next, create ana deploy in namespace kdsn00l01 a service that accomplishes the following:
* Exposes the service on TCP port 8080
* is mapped to me pods defined by the specification of kdsn00l01-deployment
* Is of type NodePort
* Has a name of cherry
Answer:
Explanation:
Solution:
NEW QUESTION # 84
Context
Task:
1) Fix any API depreciation issues in the manifest file -/credible-mite/www.yaml so that this application can be deployed on cluster K8s.
2) Deploy the application specified in the updated manifest file -/credible-mite/www.yaml in namespace cobra
Answer:
Explanation:
Solution:
NEW QUESTION # 85
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