TO THE NEW Senior Devops Engineer Interview Questions and Answers

Kubernetes components are essential parts of the Kubernetes architecture that work together to manage containerized applications.

• Kubelet: Agent that runs on each node in the cluster and ensures containers are running.

• Kube-Proxy: Network proxy that maintains network rules on nodes.

• Kubernetes API Server: Component that exposes the Kubernetes API.

• Controller Manager: Component that manages different types of controlle...read more

I am currently working on automating CI/CD pipelines and enhancing cloud infrastructure for scalability and reliability.

• Implemented Jenkins for continuous integration, reducing deployment time by 30%.

• Utilized Terraform for infrastructure as code, enabling version control of cloud resources.

• Set up monitoring and alerting using Prometheus and Grafana to ensure system health.

• Migrated legacy applications to Docker con...read more

Persistent volume is storage that exists beyond the lifecycle of a pod and can be attached to different pods.

• Persistent volume is a storage resource in Kubernetes that exists beyond the lifecycle of a pod.

• It allows data to persist even after the pod is deleted or restarted.

• Persistent volumes can be dynamically provisioned or statically defined.

• Yes, the same persistent volume can be attached to different pods as lo...read more

TCP probing is a low-level network protocol used to check if a port is open, while HTTP probing is a higher-level protocol used to check if a web server is responding.

• TCP probing involves sending a TCP packet to a specific port on a target host and waiting for a response.

• HTTP probing involves sending an HTTP request to a web server and checking for a valid response code (e.g. 200 OK).

• TCP probing is more generic an...read more

Readiness probe checks if a container is ready to serve traffic, while liveness probe checks if a container is alive and healthy.

• Readiness probe is used to determine when a container is ready to start accepting traffic.

• Liveness probe is used to determine if a container is still running and healthy.

• Readiness probe is often used to delay traffic until the container is fully ready.

• Liveness probe is used to restart co...read more