Multipass is a production-grade virtual machine orchestration tool that provides a daemon (multipassd) with a gRPC API and multiple clients (CLI, Flutter GUI). The daemon manages the full VM lifecycle—launch, start, stop, suspend, snapshot, clone, delete—across several hypervisor backends: QEMU/KVM (Linux/macOS), Apple VZ (macOS), Hyper‑V/HCS (Windows), and VirtualBox (legacy). The codebase demonstrates a client–server architecture where the CLI binary dispatches commands to the daemon via gRPC using protobuf messages, and output is formatted in table/JSON/CSV/YAML. All VMs are provisioned with cloud‑init, and images are fetched from Ubuntu's SimpleStreams or custom HTTP sources with caching and hash verification. Network bridges, DNSMasq on Linux, and HCN/HCS on Windows provide connectivity; mounts are handled via SSHFS (or SMB on Windows). The design includes a plugin‑style backtracking for hypervisors, a persistent settings system backed by QSettings and JSON files, an extensible logging framework (journald, syslog, Windows Event Log), and a new‑release monitor that polls GitHub releases. The repository also contains a Rust component for petname generation and logging, a Python distro‑scraper that periodically refreshes cloud image metadata, and a comprehensive test suite with C++ unit tests (Google Test/Mock) and Python integration tests (pytest, pexpect). Overall, it is a mature, cross‑platform application with strong engineering practices but carries some technical debt from legacy backends and ongoing migrations.
This repository provides documentation and automation scripts for setting up a Kubernetes cluster from scratch using VirtualBox. It includes shell scripts for creating and configuring VM images with cloud-init, configuration files for various Kubernetes components (etcd, control plane, worker nodes, HAProxy load balancers), and detailed documentation explaining the setup process. The repository serves as an educational guide for understanding Kubernetes infrastructure components and how they interact, rather than a deployable application itself. The main value lies in the well-structured automation scripts and comprehensive documentation that walk users through building a complete Kubernetes cluster with high availability features.
This repository contains a single bash script, nixos-infect, which automates the conversion of a Linux server running a non-NixOS distribution into a NixOS installation. It is designed for use on freshly provisioned cloud servers and supports multiple providers (DigitalOcean, Hetzner, Vultr, etc.) through environment variables and auto-detection. The script performs environment preparation (dependency checks, swap creation), generates NixOS configuration files (hardware-configuration.nix, configuration.nix, and optionally networking.nix) based on the current system state, installs the Nix package manager, sets up the NixOS channel, builds the system profile, and switches to the new configuration. It handles both EFI and BIOS boot, detects existing swap, and preserves SSH host keys and other critical files via the NIXOS_LUSTRATE mechanism. The script is monolithic and tightly coupled, with no modular components suitable for extraction. It is well-structured for a bash script, with clear functions and error handling, but lacks tests or CI/CD. Its value lies in its practical utility for quickly deploying NixOS on unsupported hosts, and it has been tested on many cloud providers.