Q: How do you create a self-signed TLS certificate for an Ingress?
Use cert-manager with ClusterIssuer: selfsigned. Or: openssl req -x509 -nodes -newkey rsa:2048 -out tls.crt -keyout tls.key, then kubectl...
#Kubernetes #Additional Kubernetes Scenarios (Q101-Q200) #L2 #Container Orchestration #K8s #Ingress
🎙️ Candidate Opening & Architectural Context
""Kubernetes is a declarative desired state system; understanding the reconciliation loop is how you diagnose this quickly. When addressing this question, I walk the interviewer through our production incident runbook: isolating the blast radius, checking diagnostic logs and metrics, and applying a safe fix.""
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🛠️ Production Runbook & Step-by-Step Resolution
1️⃣
Production Solution & Architecture
Use cert-manager with ClusterIssuer: selfsigned. Or: openssl req -x509 -nodes -newkey rsa:2048 -out tls.crt -keyout tls.key, then kubectl create secret tls my-tls --cert=tls.crt --key=tls.key. Reference in Ingress tls section.
💡 The Senior SRE Gold Nugget (Key Architectural Takeaway)
"Pro-Tip: Use cert-manager with ClusterIssuer: selfsigned. Or: openssl req -x509 -nodes -newkey rsa:2048 -out tls.crt -keyout tls.key, then ."
⚡ 60-Second Elevator Pitch Talking Points
- Immediate Triage: Use cert-manager with ClusterIssuer: selfsigned. Or: openssl req -x509 -nodes -newkey rsa:2048
- Run targeted verification commands before modifying configuration.
- Automate permanent guardrails (CI check, alerts, IaC policy) to prevent recurrence.
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