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Course Outline
Declarative System Sovereignty
- Why imperative configuration management leads to drift and audit failure.
- The Nix store, derivations, and pure functions for system building.
- NixOS compared to traditional distros: immutability and atomic upgrades.
Installation and Basics
- Installing NixOS from an ISO file with manual and automated partitioning.
- The Nix language: sets, functions, and imports.
- The structure of configuration.nix and its module system.
- Searching for packages and options using nix search and manual pages.
Package and Service Management
- Installing packages system-wide versus per-user with nix-env.
- Enabling systemd services declaratively.
- Creating custom package overrides and overlays.
- Garbage collection and store optimization techniques.
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
- Managing fleets with NixOps and Colmena.
- Configuring remote building and binary caches.
- Managing secrets using agenix and sops-nix.
- Testing deployments using NixOS VMs and containers.
System Updates and Rollbacks
- Utilizing nixos-rebuild in switch, test, and boot modes.
- Performing atomic rollbacks to previous system generations.
- Managing channels and pinning 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 ISO and netboot images.
- Implementing Hydra continuous integration for Nix packages.
Requirements
- Advanced Linux system administration skills and experience with shell scripting.
- A fundamental understanding of functional programming principles.
- Familiarity with Git and version-controlled configuration workflows.
Audience
- Infrastructure engineers aiming for reproducible, declarative systems.
- DevOps teams seeking to replace tools like 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.
