11-12, August 2026 Seoul, South Korea View More Details & Registration Note: The schedule is subject to change.
The Sched app allows you to build your schedule but is not a substitute for your event registration. You must be registered for Open Source Summit Korea 2026 to participate in the sessions. If you have not registered but would like to join us, please go to the event registration page to purchase a registration.
This schedule is automatically displayed in Korea Standard Time (KST), UTC +9. To see the schedule in your preferred timezone, please select from the drop-down menu to the right.
Sign up or log in to add sessions to your schedule and sync them to your phone or calendar.
As cloud service providers evolve their infrastructure, Multi-AZ architecture becomes essential for service continuity, failure isolation, and operational resilience. However, building a Multi-AZ cloud with open source technologies is not simply about spreading components across data centers. It requires design decisions across compute, networking, storage, observability, automation, and failure validation.
This session shares a CSP’s journey from a region-centric architecture toward a Multi-AZ cloud model using open source technologies such as OpenStack, Kubernetes, OVN, Kube-OVN, OpenStack-Helm, Cluster API, Ceph, and cloud native observability tools.
The talk will cover regional versus AZ-local service design, OpenStack control plane deployment on Kubernetes, zone-aware networking, storage replication, image availability, observability, and DR validation. It will also discuss trade-offs in traffic locality, failover behavior, data consistency, and complexity.
Rather than presenting a vendor-specific platform, this session focuses on reusable architecture patterns and lessons for cloud operators who want to build resilient open cloud infrastructure with open source software.
John Haan is a cloud platform engineering leader at kt cloud, focusing on open source-based cloud infrastructure, OpenStack, Kubernetes, and cloud native operations. His work includes OpenStack-on-Kubernetes architecture, Multi-AZ cloud design, automation, observability, and resilient... Read More →
