자체 호스팅 환경에서 3.1.0.beta2로 업그레이드할 때 일반 멀티컨테이너 설치 방식은 추가 중단 시간이 필요합니다

Are you doing a two-stage migration with Introducing Post Deployment Migration ?

This pattern is critical if you’re doing e.g. a blue/green deployment and need the previous version to continue to function.