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…

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…

By Hirotaka Yamamoto (@ymmt2005) Coil v2 is a Kubernetes network plugin that implements Container Networking Interface (CNI) 0.4.0. CNI defines plugins as executables. In Kubernetes, kubelet or container runtimes such as containerd directl…

By Hirotaka Yamamoto (@ymmt2005) In the previous article, we introduced Coil v2 and its opt-in egress NAT feature. The feature allows any Kubernetes Pods to initiate outgoing TCP/UDP communication with external networks. This article dives…

By Hirotaka Yamamoto (@ymmt2005) We are pleased to announce that Coil v2, the second major version of our CNI plugin for Kubernetes, is now generally available. Coil offers bare-metal network performance plus the following features: Multip…

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…

By Satoru Takeuchi (@satoru-takeuchi) Introduction Rook/Ceph support two types of clusters, "host-based cluster" and "PVC-based cluster". The former specifies host paths and raw devices to create OSD, and the latter specifies the storage c…