feat: 워크로드 securityContext 추가 (컨테이너 하드닝) (#61)#62
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- 전 워크로드 pod-level seccompProfile: RuntimeDefault - backend/ai/frontend/redis 컨테이너: allowPrivilegeEscalation: false + capabilities.drop [ALL] - postgres: allowPrivilegeEscalation: false만 (root→postgres 권한 드롭에 캡 필요해 drop ALL 제외) runAsNonRoot/readOnlyRootFilesystem은 이미지 검증 후 별도 적용(깨짐 방지). base에 적용 → kind/eks overlay 공통 상속. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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closes #61
개요
모든 워크로드에 securityContext가 없던 문제(코드리뷰 #7)를 이미지 깨짐 위험이 없는 안전 부분집합으로 하드닝.
적용
seccompProfile: RuntimeDefaultallowPrivilegeEscalation: false+capabilities.drop: [ALL]seccompProfile: RuntimeDefaultallowPrivilegeEscalation: false(drop ALL 제외)NET_BIND_SERVICE등 캡 불필요 →drop [ALL]안전.postgres유저로 권한 드롭(CHOWN/SETUID 등 캡 필요) →drop ALL/runAsNonRoot적용 시 initdb 실패하므로 제외,no_new_privs만 설정.의도적으로 제외 (후속, 이미지 검증 필요)
runAsNonRoot: true/runAsUser— 각 ECR 이미지가 non-root 사용자를 지원하는지 Dockerfile 확인 후readOnlyRootFilesystem: true— 앱이 쓰는 임시경로에 emptyDir 마운트 필요base 적용 → kind/eks overlay 공통 상속. YAML 검증 완료.
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