Q: Walk me through building a CI/CD pipeline for a containerized app using AWS-native services.
1. CodeCommit or GitHub — source code repository. Push triggers the pipeline.
#AWS #CI/CD on AWS #L2 #Cloud #Infrastructure #Git
🎙️ Candidate Opening & Architectural Context
""In our AWS cloud environment, we managed high-traffic microservices where this exact scenario occurred. 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
Initial Diagnostics & Root Cause Analysis
For ECS Blue/Green with CodeDeploy:
- CodeCommit or GitHub — source code repository. Push triggers the pipeline.
- CodeBuild — builds the Docker image, runs tests, pushes image to ECR (Elastic Container Registry).
- ECR — stores the Docker image.
- CodeDeploy or ECS Blue/Green — deploys the new image to ECS/EKS.
- CodePipeline — orchestrates the full pipeline: Source → Build → Test → Deploy.
- CodeDeploy creates a new task set with the new image.
2️⃣
Remediation & Permanent Safeguards
- Routes test traffic to it.
- After validation, shifts production traffic over.
- Terminates old task set.
- Supports instant rollback.
💡 The Senior SRE Gold Nugget (Key Architectural Takeaway)
"Pro-Tip: CodeCommit or GitHub — source code repository. Push triggers the pipeline.."
⚡ 60-Second Elevator Pitch Talking Points
- CodeCommit or GitHub — source code repository. Push triggers the pipeline.
- CodeBuild — builds the Docker image, runs tests, pushes image to ECR (Elastic Container Registry).
- ECR — stores the Docker image.
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