See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Define Liveness Probe:
- Create a 'livenessProbe' within the 'containers' section of your 'web-app' Deployment YAML-
- Choose a probe type appropriate tor your application. In this case, since the startup is complex, use an 'exec' probe.
- Specify the command to execute. This should be a simple command that checks if the application is up and ready to handle requests.
- Set 'initialDelaySecondS and 'periodSeconds' to provide sufficient time for the application to start.
- Configure 'failureThreshold' and 'successThreshold' to define how many tailed or successful probes trigger a pod restart.

2. Define Readiness Probe: - Create a 'readinessProbe' Within the 'containers' section of your 'web-apps Deployment YAML. - Use the same 'exec' probe type as for the liveness probe. - Specify a command that checks it the application is ready to serve traffic. - Set 'initialDelaySeconds' and 'periodSeconds' to control the frequency and delay of the probe. - Configure 'failureThreshold' and 'successThreshold' to handle failed or successful probe results.

3. Deploy the Deployment: - Apply the updated YAML file using 'kubectl apply -f web-app.yamr 4. Verify the Probes: - Observe the pod logs using 'kubectl logs to see when liveness and readiness probes are executed. - Use 'kubectl get pods -I app=web-app' to check the status of pods and see how liveness and readiness probes affect the pod's health and availability. 5. Test the Application: - Send requests to the application to verify that it is healthy and responsive, even during startup. - Liveness Probe: The ' livenessProbe' checks if the application is still healthy and running. If the probe fails repeatedly, the Kubernetes will restart the pod to fix the issue. This ensures that unhealthy pods are removed and replaced with healthy ones. - Readiness Probe: The 'readinessproa' cnecks it the application iS ready to receive traffic. This allows Kubernetes to delay sending traffic to a pod until it is fully initialized and prepared to serve requests. It helps prevent users from encountering errors during startup. By using both liveness and readiness probes, you can ensure your application is healthy and available to users, even during complex startup sequences.,