KubeCon + CloudNativeCon Japan 2025: Full Schedule

16-17 June
Learn More and Register to Attend

The Sched app allows you to build your schedule but is not a substitute for your event registration. You must be registered for KubeCon + CloudNativeCon Japan 2025 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.

Please note: This schedule is automatically displayed in Japan Standard Time (UTC+9:00). To see the schedule in your preferred timezone, please select from the drop-down menu to the right, above "Filter by Date." The schedule is subject to change and session seating is available on a first-come, first-served basis.

12:10 JST

Safeguarding Your Applications - Achieving Zero Downtime During Kubernetes Upgrades - Kazuki Uchima & Kakeru Ishii, Google Cloud

Monday June 16, 2025 12:10 - 12:40 JST

Level 1 | Orion

Kubernetes cluster upgrades are frequent and can lead to unforeseen problems, including application downtime. Therefore, it is essential to understand the roles of each component that makes up a Kubernetes cluster and how they behave during an upgrade in order to safely upgrade the Kubernetes cluster and achieve zero downtime for your applications.

This session will explain the basics and practical practices to improve safety, and ensure zero downtime for your applications. In 30 minutes, we will provide an easy-to-understand explanation of everything from the roles of the main Kubernetes components to points to note during upgrades and recommended configurations to minimize or eliminate application downtime during the upgrade process. This session is recommended for those who are going to operate Kubernetes in earnest and those who are troubled by upgrades and want to learn how to prevent application downtime during Kubernetes cluster upgrades.

Speakers

Kazuki Uchima

Technical Solutions Engineer, Google Cloud

Kazuki Uchima is a Technical Solutions Engineer at Google Cloud, specializing in Cloud Native technologies with a focus on Kubernetes. He provides consulting, architecture design, and technical support for Cloud Native solutions.

Kakeru Ishii

Google

Kakeru Ishii is a Technical Solutions Engineer in Japan who helps Google Cloud customers especially when they have troubles with Kubernetes cluster, or applications on it. Background of his technical skills are around computer graphics, but now his enthusiasm is towards infrastructure... Read More →

Monday June 16, 2025 12:10 - 12:40 JST
Level 1 | Orion

Cloud Native Novice

Content Experience Level Beginner
Presentation Language Japanese

14:10 JST

⚡ Lightning Talk: Embracing Culture and Breaking Language Barriers: A Story of Fostering Global Opensource Communities - Sreeram Venkitesh, DigitalOcean

Monday June 16, 2025 14:10 - 14:15 JST

Level 1 | Pegasus A-B1

Open source communities are a celebration of our different cultures. The single reason open source communities are able to build and ship software like Kubernetes, which is used so widely, is because of the collaboration of people from all around the globe.

This also means a lot of challenges when people are working together, like language barriers, cultural differences and timezones. In this talk I'll be sharing some lessons I've learnt about fostering open source communities amidst the differences. In the last two years, serving in the K8s release team and as the SIG Docs New Contributor Ambassador, I've experienced first hand how challenges like language barriers can hinder enthusiastic contributors. This talk is about these different challenges and how we can overcome them.

In an effort to inspire everyone in the open source community to embrace our differences and welcome everyone as we work together, I'm learning Nihongo to attempt giving this talk in the Japanese language.

Speakers

Sreeram Venkitesh

Senior Software Engineer, DigitalOcean

Sreeram is a contributor to the Kubernetes project who is primarily active in SIG Release, SIG Contribex Comms and SIG Node. He was part of the Kubernetes release team from v1.29 to v1.32 and was the Enhancements sub-team lead for Kubernetes v1.31. He is also the subproject lead for... Read More →

Monday June 16, 2025 14:10 - 14:15 JST
Level 1 | Pegasus A-B1

⚡ Lightning Talks, Cloud Native Experience

Content Experience Level Any
Presentation Language Japanese

14:31 JST

⚡ Lightning Talk: Optimizing Web Applications by Offloading Heavy Processing To Kubernetes Jobs - Asami Okina, Craftsman Software, Inc.

Monday June 16, 2025 14:31 - 14:36 JST

Level 1 | Pegasus A-B1

While typical web applications do not require large amounts of resources constantly, there are cases where specific processes consume significant CPU and memory.
In this session, we will introduce an architecture that offloads such resource-intensive processes to Kubernetes Jobs.
We will explain specific methods for Job management, how to integrate web applications (Next.js, @kubernetes/client-node) with the Kubernetes API, methods for data integration between Jobs and web applications, and real-time tracking of Job progress in the UI, all while sharing practical examples. Furthermore, we will provide a detailed introduction to a pattern where Kubernetes Job definitions generated from applications are managed using ConfigMaps, enabling quick configuration switching between environments, and offer hints to optimize your applications in terms of cost, performance, and management.

Speakers

Asami Okina

Software Engineer, Craftsman Software, Inc.

Focuses on cloud-native application development and operations centered on Kubernetes, holding CKAD and CKA certifications. Specializes in automation using GitHub Actions and loves reducing tedious work. Has expertise in designing and operating systems combining Web Application... Read More →

Monday June 16, 2025 14:31 - 14:36 JST
Level 1 | Pegasus A-B1

⚡ Lightning Talks, Application Development

Content Experience Level Beginner
Presentation Language Japanese