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Course Outline
Declarative System Sovereignty
- The drawbacks of imperative configuration management, including drift and audit failure.
- Nix store, derivations, and the use of pure functions for system construction.
- NixOS compared to traditional distributions: immutability and atomic upgrades.
Installation and Basics
- Installing NixOS from an ISO file using manual and automated partitioning methods.
- The Nix language: sets, functions, and imports.
- Structure of configuration.nix and the module system.
- Searching for packages and options using nix search and man pages.
Package and Service Management
- Differentiating between system-wide package installation and per-user installation via nix-env.
- Enabling systemd services declaratively.
- Implementing custom package overrides and overlays.
- Garbage collection and store optimization techniques.
Reproducible Environments
- Utilizing nix-shell and shell.nix for ad-hoc development.
- Employing Nix Flakes to ensure lockfile-based reproducibility.
- Leveraging 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.
- Conducting deployment testing with NixOS VMs and containers.
System Updates and Rollbacks
- Navigating nixos-rebuild switch, test, and boot modes.
- Executing atomic rollbacks to previous system generations.
- Managing channels and pinning versions for reproducible updates.
- Emergency recovery procedures and bootloader configuration.
Advanced Topics
- NixOS containers and lightweight virtualization strategies.
- Cross-compilation and ARM builds.
- Generating custom ISO and netboot images.
- Implementing Hydra for continuous integration of Nix packages.
Requirements
- Advanced Linux system administration and shell scripting experience.
- Fundamental understanding of functional programming concepts.
- Familiarity with Git and version-controlled configuration workflows.
Audience
- Infrastructure engineers seeking reproducible, declarative systems.
- DevOps teams looking to replace Ansible, Puppet, or Chef with Nix.
- Organizations requiring bit-for-bit reproducible deployments.
21 Hours
Custom Corporate Training
Training solutions designed exclusively for businesses.
- Customized Content: We adapt the syllabus and practical exercises to the real goals and needs of your project.
- Flexible Schedule: Dates and times adapted to your team's agenda.
- Format: Online (live), In-company (at your offices), or Hybrid.
Price per private group, online live training, starting from 3900 € + VAT*
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