k3s

K3s is a production-ready Kubernetes distribution that reduces memory footprint and binary size by running multiple components in a single process and removing in-tree storage drivers and cloud providers. It is designed for resource-constrained environments such as ARM devices, IoT, and edge computing. Key features include: - Single binary packaging for easy installation. - Support for multiple storage backends, including sqlite3 (default), etcd3, MariaDB, MySQL, and Postgres. - Bundled technologies: Containerd, Flannel (CNI), CoreDNS, Metrics Server, Traefik (ingress), Klipper-lb, Kube-router, Helm-controller, Kine, and Local-path-provisioner. - Simplified operations: Automated TLS certificate management, worker-to-server connection handling, and real-time auto-deployment of resources from local manifests. - Minimal OS dependencies, requiring only a sane kernel and cgroup mounts. - WebSocket tunnel for kubelet API communication to avoid exposing ports on worker nodes.