DevOps

How to securely store passwords in Kubernetes? What is the External Secrets Operator?

How to protect an API from brute force attacks through Nginx rate limiting?

How to debug TLS issues between Nginx and upstream service using tcpdump or curl?

Describe the request path from Ingress to pod. What components are involved?

Why is a startup probe needed when starting a heavy Java application? What timeouts should be set?

How do you diagnose high latency in a Java service using standard Linux tools? Which commands do you use first?

How can you reduce the size of a Docker image?

How to configure Nginx as a reverse proxy? Which headers are critical?

How to determine if Java memory is leaking? What tools are available for this?

When to use StatefulSet instead of Deployment? Provide examples.