# 분산 옵저버빌리티 (DevOps) > Distributed tracing, OpenTelemetry, Jaeger, logs-metrics-traces 상관관계, 마이크로서비스 트러블슈팅 - 22 면접 질문 - Senior - [면접 질문: DevOps](https://sharpskill.dev/ko/technologies/devops/interview-questions.md) ## 1. distributed tracing 맥락에서 span이란 무엇입니까? **답변** span은 분산 트레이스 내의 개별 작업 단위를 나타내며, 이름, 시작 및 종료 타임스탬프, 메타데이터를 가집니다. 각 span은 HTTP 호출, 데이터베이스 쿼리, 함수 실행과 같은 특정 작업을 캡처합니다. span은 계층적으로 구성되어 서비스 간 요청 흐름을 보여주는 완전한 트레이스를 형성합니다. ## 2. trace와 span의 차이점은 무엇입니까? **답변** trace는 분산 아키텍처의 모든 서비스를 가로지르는 요청의 전체 여정을 나타내고, span은 그 trace 내의 단일 작업을 나타냅니다. trace는 부모-자식 관계로 계층적으로 구성된 여러 span으로 이루어집니다. 예를 들어 HTTP 요청은 라우팅, 검증, 데이터베이스 호출, 다른 서비스 호출을 위한 span을 포함하는 trace를 생성할 수 있습니다. ## 3. OpenTelemetry(OTEL)란 무엇입니까? **답변** OpenTelemetry는 텔레메트리 데이터(traces, metrics, logs)를 계측, 생성, 수집, 내보내기 위한 API, SDK, 도구를 제공하는 오픈소스이자 벤더 중립적인 옵저버빌리티 프레임워크입니다. OpenTracing과 OpenCensus의 병합으로 탄생했으며 cloud-native 옵저버빌리티의 CNCF 표준이 되어가고 있습니다. OpenTelemetry는 텔레메트리 수집을 표준화하여 벤더 락인을 방지합니다. ## 19개 추가 질문 이용 가능 - distributed tracing에서 context propagation이란 무엇입니까? - 옵저버빌리티의 세 가지 기둥은 무엇입니까? 무료로 가입하기: https://sharpskill.dev/ko/login ## 기타 DevOps 면접 주제 - [버전 관리 & Git](https://sharpskill.dev/ko/technologies/devops/interview-questions/version-control-git.md): 20개 질문, Junior - [Linux 기초](https://sharpskill.dev/ko/technologies/devops/interview-questions/linux-fundamentals.md): 22개 질문, Junior - [Shell Scripting & Bash](https://sharpskill.dev/ko/technologies/devops/interview-questions/shell-scripting-bash.md): 20개 질문, Mid-Level - [네트워킹 기초](https://sharpskill.dev/ko/technologies/devops/interview-questions/networking-basics.md): 22개 질문, Junior - [Docker 기초](https://sharpskill.dev/ko/technologies/devops/interview-questions/docker-fundamentals.md): 24개 질문, Junior - [CI/CD 기초](https://sharpskill.dev/ko/technologies/devops/interview-questions/ci-cd-fundamentals.md): 18개 질문, Junior - [GitHub Actions](https://sharpskill.dev/ko/technologies/devops/interview-questions/github-actions.md): 22개 질문, Mid-Level - [GitLab CI/CD](https://sharpskill.dev/ko/technologies/devops/interview-questions/gitlab-ci.md): 22개 질문, Mid-Level - [Jenkins](https://sharpskill.dev/ko/technologies/devops/interview-questions/jenkins.md): 22개 질문, Mid-Level - [Kubernetes 기초](https://sharpskill.dev/ko/technologies/devops/interview-questions/kubernetes-basics.md): 26개 질문, Mid-Level - [Kubernetes 네트워킹](https://sharpskill.dev/ko/technologies/devops/interview-questions/kubernetes-networking.md): 24개 질문, Mid-Level - [Kubernetes 고급](https://sharpskill.dev/ko/technologies/devops/interview-questions/kubernetes-advanced.md): 24개 질문, Mid-Level - [Ingress & API Gateway](https://sharpskill.dev/ko/technologies/devops/interview-questions/ingress-api-gateway.md): 20개 질문, Mid-Level - [Terraform 기초](https://sharpskill.dev/ko/technologies/devops/interview-questions/terraform-basics.md): 22개 질문, Mid-Level - [Terraform 고급](https://sharpskill.dev/ko/technologies/devops/interview-questions/terraform-advanced.md): 22개 질문, Mid-Level - [Ansible & Configuration Management](https://sharpskill.dev/ko/technologies/devops/interview-questions/ansible-configuration.md): 20개 질문, Mid-Level - [AWS 핵심](https://sharpskill.dev/ko/technologies/devops/interview-questions/aws-essentials.md): 26개 질문, Mid-Level - [Azure 기초](https://sharpskill.dev/ko/technologies/devops/interview-questions/azure-fundamentals.md): 22개 질문, Mid-Level - [GCP 기초](https://sharpskill.dev/ko/technologies/devops/interview-questions/gcp-fundamentals.md): 22개 질문, Mid-Level - [모니터링과 Prometheus](https://sharpskill.dev/ko/technologies/devops/interview-questions/monitoring-prometheus.md): 22개 질문, Mid-Level - [Logging & ELK Stack](https://sharpskill.dev/ko/technologies/devops/interview-questions/logging-elk.md): 20개 질문, Mid-Level - [알림 및 인시던트 대응](https://sharpskill.dev/ko/technologies/devops/interview-questions/alerting-incident-response.md): 20개 질문, Mid-Level - [Cloud Identity & Secrets](https://sharpskill.dev/ko/technologies/devops/interview-questions/cloud-identity-secrets.md): 22개 질문, Mid-Level - [CI/CD 파이프라인 보안](https://sharpskill.dev/ko/technologies/devops/interview-questions/cicd-pipeline-security.md): 20개 질문, Mid-Level - [Helm & Kubernetes](https://sharpskill.dev/ko/technologies/devops/interview-questions/helm-kubernetes.md): 20개 질문, Mid-Level - [런타임 및 클러스터 보안](https://sharpskill.dev/ko/technologies/devops/interview-questions/runtime-cluster-security.md): 24개 질문, Senior - [Container Supply Chain Security](https://sharpskill.dev/ko/technologies/devops/interview-questions/container-supply-chain.md): 22개 질문, Senior - [Service Mesh & Istio](https://sharpskill.dev/ko/technologies/devops/interview-questions/service-mesh-istio.md): 24개 질문, Senior - [GitOps & ArgoCD](https://sharpskill.dev/ko/technologies/devops/interview-questions/gitops-argocd.md): 22개 질문, Senior - [Progressive Delivery](https://sharpskill.dev/ko/technologies/devops/interview-questions/progressive-delivery.md): 20개 질문, Senior - [Disaster Recovery & Backup](https://sharpskill.dev/ko/technologies/devops/interview-questions/disaster-recovery.md): 20개 질문, Senior - [성능 최적화](https://sharpskill.dev/ko/technologies/devops/interview-questions/performance-optimization.md): 22개 질문, Senior - [클라우드 비용 최적화](https://sharpskill.dev/ko/technologies/devops/interview-questions/infrastructure-cost.md): 20개 질문, Senior - [SRE 원칙](https://sharpskill.dev/ko/technologies/devops/interview-questions/sre-principles.md): 24개 질문, Senior - [Chaos Engineering](https://sharpskill.dev/ko/technologies/devops/interview-questions/chaos-engineering.md): 20개 질문, Senior - [Platform Engineering](https://sharpskill.dev/ko/technologies/devops/interview-questions/platform-engineering.md): 22개 질문, Senior --- Source: SharpSkill (https://sharpskill.dev), tech interview preparation for your real stack. 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