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| Section | Weight | Objectives |
|---|---|---|
| Application Observability and Maintenance | 15% | - Implement probes and health checks - Understand API deprecation policies - Utilize container logs - Debugging in Kubernetes - Use built-in CLI tools to monitor Kubernetes applications |
| Services and Networking | 20% | - Provide and troubleshoot access to applications via services - Demonstrate basic understanding of NetworkPolicies - Use Ingress rules to expose applications |
| Application Deployment | 20% | - Understand Deployments and how to perform rolling updates - Use the Helm package manager to deploy existing packages - Use Kubernetes primitives to implement common deployment strategies (e.g., blue/green or canary) - Kustomize |
| Application Design and Build | 20% | - Utilize persistent and ephemeral volumes - Understand multi-container Pod design patterns (e.g., sidecar, init and others) - Define, build and modify container images - Choose and use the right workload resource (Deployment, DaemonSet, CronJob, etc.) |
| Application Environment, Configuration and Security | 25% | - Discover and use resources that extend Kubernetes (CRD, Operators) - Understand authentication, authorization and admission control - Understanding and defining resource requirements, limits and quotas - ServiceAccounts - ConfigMaps and Secrets - SecurityContexts |
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NEW QUESTION # 176
Context
Given a container that writes a log file in format A and a container that converts log files from format A to format B, create a deployment that runs both containers such that the log files from the first container are converted by the second container, emitting logs in format B.
Task:
* Create a deployment named deployment-xyz in the default namespace, that:
* Includes a primary
lfccncf/busybox:1 container, named logger-dev
* includes a sidecar Ifccncf/fluentd:v0.12 container, named adapter-zen
* Mounts a shared volume /tmp/log on both containers, which does not persist when the pod is deleted
* Instructs the logger-dev
container to run the command
which should output logs to /tmp/log/input.log in plain text format, with example values:
* The adapter-zen sidecar container should read /tmp/log/input.log and output the data to /tmp/log/output.* in Fluentd JSON format. Note that no knowledge of Fluentd is required to complete this task: all you will need to achieve this is to create the ConfigMap from the spec file provided at /opt/KDMC00102/fluentd-configma p.yaml , and mount that ConfigMap to /fluentd/etc in the adapter-zen sidecar container
Answer:
Explanation:
Solution:
NEW QUESTION # 177
You are running a web application in a Kubernetes cluster. You have a deployment named 'web- app' with two replicas. You need to implement a Network Policy that allows only traffic from pods with the label app: database' to access the 'web-app' deployment on port 8080. You also need to block all other traffic to the 'web-app' deployment.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create the Network Policy:
- Create a YAML file named 'web-app-network-policy.yamr with the following content:
2. Apply the Network Policy: - Apply the Network Policy to your cluster: bash kubectl apply -f web-app-network-policy.yaml 3. Verify the Network Policy: - Verify that the Network Policy has been applied correctly by listing the Network Policies in your namespace: bash kubectl get networkpolicies -n default # Replace with your namespace You should see the 'web-app-network-policy' listed. 4. Test the Network Policy: - From a pod with the label 'app: database' , try to access the 'web-app' deployment on port 8080. This should be successful. - From any other pod, try to access the 'web-app' deployment on port 8080. This should be blocked. - The 'podSelector' in the Network Policy specifies that it applies to pods with the label 'app: web-app'. - The 'ingress' section defines the allowed incoming traffic. In this case, it allows traffic from pods with the label 'app: database' on port 8080. - The 'egress' section defines the allowed outgoing traffic. In this case, it allows all outgoing traffic except on port 8080. This ensures that only pods with the 'app: database' label can access the 'web-ap$ deployment on port 8080. Note: - You may need to update the 'namespace' in the Network Policy YAML file to match the namespace where your 'web-app' deployment is running. - Make sure that pods with the label 'app: database' are allowed to access the 'web-app' deployment by other means, such as Service or Ingress, if needed.,
NEW QUESTION # 178
You have a Deployment running a microservice that is responsible for processing user data To ensure the security of this data, you need to implement a NetworkPolicy that restricts network traffic to and from the microservice's pods.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create a NetworkP01icy:
- Create a NetworkPolicy YAML file to define the traffic rules:
2. Apply the NetworkPolicy: - Apply tne NetworkPoliCY configuration to your Kubernetes cluster: basn kubectl apply -f restrict-microservice-traffic_yaml 3. Test the NetworkPoIicy: - Create a pod in a different namespace or on a different node. - Attempt to connect to the microservice pod from the new pod. - Verity that the connection is blocked as per the defined NetworkPolicy rules.
NEW QUESTION # 179
Refer to Exhibit.
Context
A project that you are working on has a requirement for persistent data to be available.
Task
To facilitate this, perform the following tasks:
* Create a file on node sk8s-node-0 at /opt/KDSP00101/data/index.html with the content Acct=Finance
* Create a PersistentVolume named task-pv-volume using hostPath and allocate 1Gi to it, specifying that the volume is at /opt/KDSP00101/data on the cluster's node. The configuration should specify the access mode of ReadWriteOnce . It should define the StorageClass name exam for the PersistentVolume , which will be used to bind PersistentVolumeClaim requests to this PersistenetVolume.
* Create a PefsissentVolumeClaim named task-pv-claim that requests a volume of at least 100Mi and specifies an access mode of ReadWriteOnce
* Create a pod that uses the PersistentVolmeClaim as a volume with a label app: my-storage-app mounting the resulting volume to a mountPath /usr/share/nginx/html inside the pod
Answer:
Explanation:
Solution:
NEW QUESTION # 180
You are developing a new feature for your application that requires a new microservice to be deployed. This microservice interacts With a database, and you want to ensure the database connection is handled securely and efficiently. Design a deployment strategy for the new microservice that integrates with the database and implements security best practices.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Use a Deployment:
- Deploy your new microservice using a Deployment Deployments provide a robust mechanism for managing and scaling your microservices, making it easy to update and manage your application.
2. Secure Database Credentials: - Store database credentials in a Kubernetes Secret, which is encrypted at rest. This ensures that the credentials are not exposed in plain text in your deployments.
3. Configure Database Connection Details: - Define environment variables Within your Deployment to pass database connection details (like host, port, username, and password) to the container- 4. Use ConfigMaps for Configuration: - Utilize ConfigMaps to manage database connection settings (like connection strings or configuration files) that are common across multiple pods. This makes it easier to update configuration details without modifying your deployments directly.
5. Implement Database Connection Pooling. - Use a database connection pool to manage connections efficiently, reducing the overhead of establishing and closing connections frequently. 6. Consider Using Database-as-a-Service (DBaaS): - If your application is running in a cloud environment, consider leveraging a DBaaS service like Amazon RDS, Google Cloud SQL, or Azure SQL Database. DBaaS services provide managed database infrastructure, simplifying database management, scaling, and security. T Implement Database Security Practices: - Configure database security measures like access control lists (ACLs), encryption at rest, and audit logging to ensure data security
NEW QUESTION # 181
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