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Course Outline
Declarative System Sovereignty
- Understanding how imperative configuration management leads to drift and audit failures.
- The Nix store, derivations, and the use of pure functions for system construction.
- NixOS compared to traditional distributions: focusing on immutability and atomic upgrades.
Installation and Basics
- Installing NixOS from ISO with both manual and automated partitioning methods.
- The Nix language: sets, functions, and imports.
- The structure of configuration.nix and its module system.
- Using nix search and man pages to find packages and options.
Package and Service Management
- Installing packages system-wide versus per-user using nix-env.
- Enabling systemd services in a declarative manner.
- Creating custom package overrides and overlays.
- Performing garbage collection and optimizing the store.
Reproducible Environments
- Utilizing nix-shell and shell.nix for ad-hoc development.
- Achieving lockfile-based reproducibility with Nix Flakes.
- Using devenv and devshell to streamline team onboarding.
- Integrating Direnv for automatic environment switching.
Remote Deployment
- Managing fleets with NixOps and Colmena.
- Configuring remote building and binary caches.
- Managing secrets with agenix and sops-nix.
- Testing deployments using NixOS VMs and containers.
System Updates and Rollbacks
- Using nixos-rebuild in switch, test, and boot modes.
- Executing atomic rollbacks to previous system generations.
- Managing and pinning channels for reproducible updates.
- Handling emergency recovery and bootloader configuration.
Advanced Topics
- Using NixOS containers and lightweight virtualization.
- Cross-compilation and ARM builds.
- Generating custom ISO and netboot images.
- Implementing Hydra continuous integration for Nix packages.
Requirements
- Proficiency in advanced Linux system administration and shell scripting.
- A solid grasp of functional programming concepts.
- Familiarity with Git and version-controlled configuration workflows.
Audience
- Infrastructure engineers aiming for reproducible, declarative systems.
- DevOps teams looking to transition from Ansible, Puppet, or Chef to Nix.
- Organizations that mandate bit-for-bit reproducible deployments.
21 Hours
Testimonials (2)
experienced trainer
Monika Biskupska - Osrodek Przetwarzania Informacji - Panstwowy Instytut Badawczy
Course - Kubernetes Security Fundamentals (LFS460)
trainer has hands-on knowledge
