Q: How do you debug network connectivity between two containers?
docker network inspect <network> — see which containers are on the network. From one container: ping <other-container-name> (if on same u...
#Docker #Docker #L2 #Containers #Linux
🎙️ Candidate Opening & Architectural Context
""During an image optimization initiative across our services, we solved this exact problem. 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
docker network inspect — see which containers are on the network. From one container: ping (if on same user-defined network). nslookup to verify DNS. curl http:// to test HTTP.
💡 The Senior SRE Gold Nugget (Key Architectural Takeaway)
"Pro-Tip: docker network inspect — see which containers are on the network. From one container: ping (if on same user-defined network). ns."
⚡ 60-Second Elevator Pitch Talking Points
- Immediate Triage: docker network inspect — see which containers are on the network. From one container: ping (i
- Run targeted verification commands before modifying configuration.
- Automate permanent guardrails (CI check, alerts, IaC policy) to prevent recurrence.
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