This article provides a detailed overview of CNStack 2.0, explaining its cloud‑service and cloud‑component model, the cn‑app‑operator lifecycle controller, Sealer‑based build/share/run workflow, and the ability‑center white‑screen management that together simplify multi‑cluster cloud‑native application delivery.
Sealer 0.9 introduces a cluster‑centric model for building, sharing and running distributed applications, adds Sealer Image types, enriches Kubefile with LABEL, KUBEVERSION, APP, CNI, CSI, APPCMDS and LAUNCH directives, and outlines future roadmap and community resources.
This article recounts a graduate student's step‑by‑step experience joining the CNCF Sealer project, detailing why the sandbox project attracted them, the challenges of early contributions, practical tips for navigating documentation, issues, pull requests, and community meetings, and how they eventually helped refactor the runtime module.
This guide explains how to create a CNStack Community Edition cluster image using ACK Distro as the base, package it with Sealer, configure it via Kubefile and Clusterfile, and enable advanced features such as open‑local storage and flexible component deployment.
This article explains how to scale, back up, and upgrade Kubernetes clusters with Sealer by modifying the Clusterfile, using join/delete commands for both ALI_CLOUD and BAREMETAL providers, and configuring backup plugins and upgrade workflows.
This article explains the design principles of Sealer's Clusterfile, details its configuration parameters, demonstrates how to inject additional settings and environment variables, and describes the supported plugins for customizing Kubernetes clusters, providing practical examples and code snippets.
This article introduces Sealer’s overall architecture, explains its core concepts such as CloudImage, Kubefile, and Clusterfile, details the purpose of each module within the project, and compares its workflow to Docker for building and running Kubernetes cluster images.
Sealer is an open-source Alibaba tool for packaging, delivering, and running distributed applications as cluster images, simplifying Kubernetes cluster deployment and management on Linux systems.
This article explains what a cluster image is, compares it with single‑machine setups, introduces Alibaba's open‑source Sealer tool, and provides step‑by‑step commands and examples for building, running, and managing Kubernetes cluster images across various environments.
