KubeCon + CloudNativeCon Japan 2025: Full Schedule

16-17 June
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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.

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11:30 JST

Multi Cluster Magics With Argo CD and Cluster Inventory or Don't Get Lost in the Clusterverse: Navig - Kaslin Fields, Google

Tuesday June 17, 2025 11:30 - 12:00 JST

Level 1 | Orion

You probably have more than one cluster and there is a decent chance you are using Argo CD. Additionally, it is quite likely that you have a few other variations of Kubernetes cluster lists. We posit that writing glue code to stitch together these clusters lists is not an awesome use of your time. Thankfully the good folks in SIG-Multicluster built this super cool api for cluster lists, cluster profile/cluster inventory! We are going to show you how to use said fancy new list with Argo CD along with other multi-cluster tools across Kubernetes clusters hosted by different providers. There will be demos. Possibly Mustaches. And a decent amount of awful puns. So come on down to bear witness to some sweet multi-cluster abstractions that will surely get your heart rate up.

Speakers

Kaslin Fields

Developer Advocate, Google

Kaslin Fields is a Developer Advocate at Google Cloud, a Container enthusiast and creator of tech comics. She uses her knowledge of DevOps technologies and methodologies to help others as they enter the Cloud Native world. By creating comics about DevOps tech, she hopes to make learning... Read More →

Tuesday June 17, 2025 11:30 - 12:00 JST
Level 1 | Orion

Platform Engineering

Content Experience Level Intermediate
Presentation Language English

12:10 JST

Cloud Native Scalability for Internal Developer Platforms - Hiroshi Hayakawa, LY Corporation

Tuesday June 17, 2025 12:10 - 12:40 JST

Level 1 | Orion

Platform Engineering enables developers to focus on business value-aligned tasks by providing internal developer platforms (IDPs) that automate non-essential tasks. Kubernetes is widely used as a foundation for IDPs thanks to its scalability and flexibility.

However, Kubernetes was designed as a general workload orchestrator, not a platform component. As a result, IDP builders must integrate additional Cloud Native technologies and customizations, which can create scalability bottlenecks. At LY Corporation, his team has developed a Kubernetes-based, multi-tenant IDP running over 140K pods, and they faced such scalability challenges.

In this session, he will discuss scalability bottlenecks faced in the IDP, including observability pipelines, access control, etc. He will also explore scaling strategies for IDPs and how they address real-world scalability issues. By the end of this session, you will gain deeper insights into scalability challenges from a platform builder’s perspective.

Speakers

Hiroshi Hayakawa

Senior Platform Engineer, LY Corporation

Hiroshi is a lead engineer for Kubernetes-based application platforms in LY Corporation's Private Cloud Division. The company operates numerous large-scale applications on its Kubernetes-based platform, and he excels in ensuring stable operations at scale on Kubernetes and driving... Read More →

Tuesday June 17, 2025 12:10 - 12:40 JST
Level 1 | Orion

Platform Engineering

Content Experience Level Intermediate
Presentation Language English

14:10 JST

Navigating Millions of Kafka Events in Real Time With OTel - Siddharth Vijay, Baazi Games

Tuesday June 17, 2025 14:10 - 14:40 JST

Level 1 | Orion

How can real-time event streaming platforms, handling millions of events and complex data processing, maintain peak performance and reliability? Managing the same has previously been complex. The latest agent changes and addition of semantic convention in OpenTelemetry make it ideal to monitor highly distributed event streaming architectures (EDA) like Kafka. In this session we will discuss how these changes help standardize telemetry, explain the usage of span links for capturing several traces for a transaction in EDA.

The talk will also cover how Otel enables automatic anomaly detection particularly useful for identifying issues like Consumer Lag, Increased Latency in Event Processing, and Partition Failures. By leveraging context propagation, Otel tracks end-to-end latency across the entire Kafka ecosystem, including producers, brokers, and consumers.

The talk covers real-world examples from gaming platforms and data systems which have enabled Otel for Kafka monitoring.

Speakers

Siddharth Vijay

AVP Engineering & Head of DevOps, Baazi Games

Siddharth Vijay, AVP at Pokerbaazi and KubeCon India speaker, brings over 12 years of experience driving impactful projects in AI, Security, and Cloud. A firm advocate of open-source technologies, he has a proven track record of delivering practical solutions with real-world value... Read More →

Tuesday June 17, 2025 14:10 - 14:40 JST
Level 1 | Orion

Observability

Content Experience Level Intermediate
Presentation Language English

14:50 JST

Debugging OpenTelemetry: Ensuring Your Observability Signals Are Spot On - Kasper Borg Nissen, Dash0

Tuesday June 17, 2025 14:50 - 15:20 JST

Level 1 | Orion

OpenTelemetry has become the go-to framework for unifying observability signals across metrics, logs, and traces. However, implementing OpenTelemetry often comes with its own set of challenges: broken instrumentation, missing signals, and misaligned semantic conventions that undermine its effectiveness. Debugging these issues can be daunting, leaving teams stuck with incomplete or unreliable observability data.

In this session, Kasper will demystify the debugging process for OpenTelemetry. Attendees will learn how to identify and troubleshoot common issues, ensure signals are transferred correctly, and align instrumentation with semantic conventions for consistent insights. Through live demos, Kasper will showcase techniques for validating resource configurations, debugging signal pipelines, and building confidence in your observability setup. This session is designed for anyone looking to unlock the full potential of OpenTelemetry and create robust observability practices.

Speakers

Kasper Borg Nissen

Developer Relations, Dash0

Kasper is a Co-Chair for KubeCon+CloudNativeCon EU/NA, Kubestronaut, CNCF Ambassador, and co-founder of the Nordic meetup alliances, Cloud Native Nordics, where he also serves as Community Lead. He works in Developer Relations at Dash0, previously Lunar where he and his team built... Read More →

Tuesday June 17, 2025 14:50 - 15:20 JST
Level 1 | Orion

Observability

Content Experience Level Beginner
Presentation Language English

15:50 JST

Reimagining Cloud Native Networks: The Critical Role of DRA - Lionel Jouin, Ericsson Software Technology & Sunyanan Choochotkaew, IBM Research

Tuesday June 17, 2025 15:50 - 16:20 JST

Level 1 | Orion

As AI/ML, high-performance and telecom workloads are progressing in their cloud-native journey, the unique platform requirements inherent to the nature of their functionality are exposing the limitations of existing solutions such as Multus and device plugins. Device Resource Allocation (DRA) offers a fresh approach overcoming these challenges with better resource management for non-homogeneous platforms, topology-aware use cases and beyond! By leveraging the latest Kubernetes features, DRA Drivers are redefining the network interface configuration and enhancing capabilities for multi-network deployments. This talk explores the evolving cloud-native networking landscape and the trade-offs between extending Kubernetes and leveraging add-on components. We will delve into recent advancements including the network device status with KEP-4817, the virtual device allocation with KEP-5075 and the role of the CNI-DRA-Driver in shaping the future of cloud-native networking infrastructure.

Speakers

Lionel Jouin

Software Engineer, Ericsson Software Technology

Lionel Jouin is a Software Engineer at Ericsson Software Technology, based in Stockholm, Sweden. He actively contributes to Kubernetes with a focus on bringing native support for secondary networks and its ecosystem including services and policies…. His contributions span SIG Network... Read More →

Sunyanan Choochotkaew

Staff Research Scientist, IBM Research

Sunyanan Choochotkaew is a staff research scientist at IBM Research, specializing in distributed computing and performance acceleration on cloud platforms. She holds the role of maintainer of Kepler. She has made contributions to Environmental Sustainability TAG, operator framework... Read More →

Tuesday June 17, 2025 15:50 - 16:20 JST
Level 1 | Orion

Connectivity

Content Experience Level Intermediate
Presentation Language English

16:30 JST

Dynamic Provisioning and Capacity-Aware Scheduling for Local Storage - Yuma Ogami, Cybozu, Inc.

Tuesday June 17, 2025 16:30 - 17:00 JST

Level 1 | Orion

In this session, the speaker presents TopoLVM, a CSI plugin for local storage, and introduces an upcoming Kubernetes feature for local storage that he and his team are working on.

Local storage is promising for applications that require high I/O performance, like Elasticsearch and MySQL. TopoLVM provides many features like raw block volumes, resizing, and dynamic provisioning to manage local storage in Kubernetes easily. It also includes a capacity-aware pod scheduling feature that considers each node's local storage capacity.

Currently, this capacity-aware feature is achieved by a scheduler extender, which has two main issues:

1. Many admins don't have the right to install scheduler extenders.
2. The scheduler extender is TopoLVM specific.

To address these issues, he will introduce a KEP titled "KEP-4049: Storage Capacity Scoring of Nodes for Dynamic Provisioning." to be able to TopoLVM's scheduling logic for all CSI drivers without using scheduler extenders.

Speakers

Yuma Ogami

Software Engineer, Cybozu, Inc.

He works at Cybozu, Inc. and spent four years involved in the operation and development of a server infrastructure using a custom system with VMs. For the past three years, he has focused on the operation and development of the storage area for a new infrastructure using Kubernetes... Read More →

Tuesday June 17, 2025 16:30 - 17:00 JST
Level 1 | Orion

Data Processing + Storage

Content Experience Level Intermediate
Presentation Language English