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Course Outline
Achieving Declarative System Sovereignty
- Why imperative configuration management leads to drift and audit failures.
- Using the Nix store, derivations, and pure functions to build systems.
- NixOS compared to traditional distributions: immutability and atomic upgrades.
Installation and Core Concepts
- Installing NixOS from ISO images with manual and automated partitioning.
- The Nix language: sets, functions, and imports.
- Understanding the structure of configuration.nix and the module system.
- Searching for packages and options using nix search and man pages.
Managing Packages and Services
- Installing packages system-wide versus per-user using nix-env.
- Declaratively enabling systemd services.
- Creating custom package overrides and overlays.
- Performing garbage collection and optimizing the Nix store.
Building Reproducible Environments
- Using nix-shell and shell.nix for ad-hoc development.
- Leveraging Nix Flakes for lockfile-based reproducibility.
- Utilizing devenv and devshell for streamlined team onboarding.
- Integrating Direnv for automatic environment switching.
Remote Deployment Strategies
- Managing fleets using NixOps and Colmena.
- Configuring remote building and binary caches.
- Managing secrets with agenix and sops-nix.
- Testing deployments using NixOS virtual machines 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.
- Performing cross-compilation and ARM builds.
- Generating custom ISOs and netboot images.
- Implementing Hydra for continuous integration of Nix packages.
Requirements
- Advanced experience in Linux system administration and shell scripting.
- Foundational understanding of functional programming principles.
- Familiarity with Git and version-controlled configuration workflows.
Target Audience
- Infrastructure engineers seeking reproducible, declarative systems.
- DevOps teams aiming to replace Ansible, Puppet, or Chef with Nix.
- Organizations requiring bit-for-bit reproducible deployment processes.
21 Hours
Testimonials (4)
experienced trainer
Monika Biskupska - Osrodek Przetwarzania Informacji - Panstwowy Instytut Badawczy
Course - Kubernetes Security Fundamentals (LFS460)
trainer has hands-on knowledge
- Osrodek Przetwarzania Informacji - Panstwowy Instytut Badawczy
Course - Kubernetes for App Developers (LFD459)
A very good and easy-to-use virtual solution (DA DESKTOP).
HEITOR GAVA - Motorola Solutions Ltda
Course - Quick Introduction to Hypervisor and KVM
Tyler is very knowledgable and shared his valuable experience in Lustre administration with us.
