Kintone Engineering Blog

Learn about Kintone's engineering efforts. Kintone is provided by Cybozu Inc., a Tokyo-based public company founded in 1997.

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Introducing MOCO, a modern MySQL operator on Kubernetes

By Hirotaka Yamamoto (@ymmt2005) We are proud to announce a new MySQL operator named MOCO. MOCO manages MySQL clusters on Kubernetes that replicate data using GTID-based semi-synchronous replication. We will be migrating hundreds of MySQL …

Placemat: Powerful Data Center Virtualization Tool

By Yusuke Suzuki Placemat is our open-source software built to provide data center virtualization for CI automated testing along with technologies like QEMU/KVM virtual machines and Linux networking stacks. Setting up a CI environment for …

Multi-tenancy monitoring system for Kubernetes cluster using VictoriaMetrics and operators

By UMEZAWA Takeshi We are building a large data center system using Kubernetes for various development teams in the same company. To monitor the system activities, we used to rely on Prometheus and Grafana. Recently, we revamped our monito…

Tolerating failures in container image registries

By Akihiro Ikezoe, Hirotaka Yamamoto Have you ever experienced that your Kubernetes cluster cannot create new Pods because Docker Hub or other container registries are down? This article will show you several ways to ensure your Kubernetes…

Rebooting a LOT of Kubernetes nodes in a declarative way

By Daichi Sakaue (@yokaze) Hi, I'm Daichi, and I'm working on developing our on-premise data centers using Kubernetes (k8s). Have you ever spent a whole day rebooting all the machines in a Kubernetes cluster? Just checking the steps and ch…

Introducing pvc-autoresizer

By Akihiro Ikezoe. Today, we are excited to announce pvc-autoresizer, which is new, Kubernetes-native, open-source software to provide the ability to expand the size of Persistent Volume Claims (PVCs) on Kubernetes cluster automatically. p…

Announcing TopoLVM 0.3 & 0.4

By Banji Inoue (@binoue) We are happy to announce that TopoLVM 0.4.0 is released. TopoLVM is a storage plugin for Kubernetes using LVM. It features dynamic provisioning and capacity-aware scheduling among others. Here is news about the rec…

Production-grade delivery workflow using Argo CD

By Banji Inoue (@binoue), Akihiro Ikezoe(@zoetro) Nowadays, GitOps is widely considered the best methodology for continuous delivery. However, the right way of implementing GitOps for production environments is not widely understood. We br…

Automating Lifecycle Management of Kubernetes Clusters

By Hiroshi Muraoka (@tapih) This article introduces Cybozu Kubernetes Engine(CKE), a certificated Kubernetes Conformance Software by CNCF. CKE is designed to reduce the operations burden for large Kubernetes(k8s) clusters as little as poss…

Introducing a New Local Storage for Kubernetes: TopoLVM

By Kazuhito Matsuda (@kazmaz11) Local storage in Kubernetes means storage devices or filesystems available locally on each node server. This article briefly reviews existing local storage solutions in Kubernetes, then introduces a new stor…

Modular, Pure Layer 3 Network for Kubernetes: The Implementation

By Hirotaka Yamamoto (@ymmt2005) As part of Project Neco, we are building a highly scalable data center network for large Kubernetes clusters. In Modular, Pure Layer 3 Network for Kubernetes: The Design, we described the challenges of buil…

Modular, Pure Layer 3 Network for Kubernetes: The Design

By Shin'ya Ueoka (@ueokande), Hirotaka Yamamoto (@ymmt2005) As part of Project Neco, we are building a highly scalable data center network for large Kubernetes clusters. This is the first of the series of articles to describe the network i…

Project Neco: Building Cloud Native On-Premise Data Centers

By Hirotaka Yamamoto (@ymmt2005) kintone.com, a low-code application platform service, is branded as cybozu.com in Japan. Today, cybozu.com is used by more than 30,000 customer companies. To provide a reliable and cost-effective service, w…