Kwanghun Choi
Kakao creates a better world
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Kwanghun is a member of the cloud platform team at Kakao Corp. focusing on Kubernetes. He develops and maintains a private Kubernetes as a Service running on OpenStack-based IaaS for the team. He is also the developer of an automatic version upgrade API for the private Kubernetes as a Service cluster.
He is passionate about automation and problem solving, always looking for ways to streamline tedious tasks and working with his team to solve complex challenges in managing Kubernetes clusters.
Architecting Resilience: Lessons from Managing 7K+ Kubernetes Clusters at Scale
As a Kakao’s private Kubernetes as a Service team member, we manage over 7K+ clusters, 100K+ nodes. Due to a data center fire that occurred last year, we experienced significant economic and social impacts.
Many developers within the company utilize Kubernetes clusters, and the various services which run on Kakao's services each use multiple clusters. In this situation, failure in a data center would affect multiple services.
Therefore, cluster high-availability has become an important consideration, and we have been thinking about how to provide highly available Kubernetes clusters more efficiently for developers. In this talk, we will describe the design ideas we had for providing highly available Kubernetes clusters and the various problems and concerns we encountered while implementing them.
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