Q: How do you implement a global rate limiter for all requests to your services in Kubernetes?
With Istio: EnvoyFilter or RateLimitPolicy using a Redis-backed rate limit service. With nginx-ingress: nginx.ingress.kubernetes.io/limit...
#Kubernetes #Additional Kubernetes Scenarios (Q101-Q200) #L3 #Container Orchestration #K8s #Ingress
🎙️ Candidate Opening & Architectural Context
""When troubleshooting Kubernetes, I always follow a structured layered model: Pod status -> Events -> Logs -> Network. 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
With Istio: EnvoyFilter or RateLimitPolicy using a Redis-backed rate limit service. With nginx-ingress: nginx.ingress.kubernetes.io/limit-rps annotation. With Envoy-based Ingress: global rate limiting service (Envoy Rate Limit) shared across all ingress instances for true global limits.
💡 The Senior SRE Gold Nugget (Key Architectural Takeaway)
"Pro-Tip: With Istio: EnvoyFilter or RateLimitPolicy using a Redis-backed rate limit service. With nginx-ingress: nginx.ingress.kubernetes.i."
⚡ 60-Second Elevator Pitch Talking Points
- Immediate Triage: With Istio: EnvoyFilter or RateLimitPolicy using a Redis-backed rate limit service. With nginx-
- Run targeted verification commands before modifying configuration.
- Automate permanent guardrails (CI check, alerts, IaC policy) to prevent recurrence.
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