Learn how the Korea Meteorological Administration transformed their infrastructure in this 31-minute conference talk that details the implementation of a nationwide weather information system. Discover how they leveraged community OpenStack, Kubernetes, and Ceph storage to process real-time meteorological data across an Active-Active structure spanning two sites. Explore the technical aspects of their cloud infrastructure expansion, which now encompasses 30,000 vCPUs and 7PB of Ceph storage, including a dedicated GPU farm configured in OpenStack's Ironic format for big data processing. Gain insights into the architectural decisions and technical challenges overcome during their journey to build a flexible, scalable private cloud solution that powers critical weather-related services, from radar maps to earthquake notifications.