SSH에서 REST로: 보안 중심의 Slack EMR 데이터 파이프라인 현대화

Slack eliminated a critical security vulnerability by migrating 700+ SSH-based pipeline jobs to REST API using YARN Distributed Shell, directly enabling Kubernetes adoption and infrastructure modernization. This zero-downtime approach demonstrates how replacing stateful SSH connections with stateless APIs improves reliability and operational transparency. The solution leverages native Hadoop capabilities, offering a practical pattern for organizations modernizing legacy data platforms while strengthening security.