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Actual exam question for Linux Foundation's CKA exam Question #: 51 Topic #: 3
You are running a service that handles requests from multiple pods. How can you scale the service to handle increased traffic without impacting the service availability during the scaling process?
Suggested Answer:
See the solution below with Step by Step Explanation. Explanation: Solution (Step by Step) : 1. Use a Deployment: - Deploy the service using a Deployment with the desired number of replicas. 2. Define a Service: - Create a Service that exposes the application to the outside world. - Use a 'type: LoadBalancer' to distribute traffic across the pods. 3. Implement Horizontal Pod Autoscaler (HPA): - Create an HPA that monitors the service's CPU usage. - Configure the HPA to scale the Deployment based on the CPU utilization. 4. Test the Autoscaling: - Simulate increased traffic to the service. - Observe the HPA scaling the Deployment to meet the demand. 5. Monitor the Service: - Monitor the service's performance and ensure that it remains available and stable during scaling. 6. Adjust HPA Configuration: - Fine-tune the HPA configuration to optimize scaling based on specific performance needs.
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