Interview Q&A / Docker & Kubernetes
Docker & Kubernetes interview questions
Images, containers, Dockerfiles, pods and deployments, from first principles.
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- What is an Ingress in Kubernetes and how does it differ from a LoadBalancer Service?
An Ingress defines HTTP and HTTPS routing rules by host and path, handled by an Ingress controller. One load balancer can serve many services, while a LoadBalancer Service creates one external load balancer per Service.
BeginnerQuick answer1 min read - How do you enable HTTPS for an Ingress in Kubernetes?
Store the certificate and key in a TLS Secret, and reference it under spec.tls in the Ingress for your host. With cert-manager, certificates from Let's Encrypt can be issued and renewed automatically.
IntermediateQuick answer1 min read - You created an Ingress but nothing works. What could be missing?
Usually no Ingress controller is installed, so no one reads the rules. Also check ingressClassName, that the backend Service and port exist, DNS pointing to the controller's address, and that Pods are ready.
IntermediateQuick answer1 min read