GitOps Fundamentals

By the end

What you'll build

• State the GitOps principles and explain what each one rules out in practice
• Design a repository layout for multiple environments and teams with clear review boundaries
• Promote configuration between environments without duplicating or diverging definitions
• Diagnose a reconciliation loop that will not converge, including drift, pruning and health assessment
• Keep secrets out of version control while preserving a pull-based reconciliation model
• Roll back a change and reconstruct an audit trail from version history

Curriculum

What's inside

7 modules · 35 lessons

1. 01

   Principles

   5 lessons
   • The GitOps principles and what each one rules out
   • Declarative desired state
   • Version control as the single source of truth
   • Pull-based reconciliation compared with pushed deployment
   • What each commitment rules outmatch pairs
2. 02

   Repository design

   5 lessons
   • Structuring repositories for many environments and many teams
   • Single-repository and multi-repository trade-offs
   • Separating application code from delivery configuration
   • Ownership and code review boundaries
   • Complete the layout rulesfill blank
3. 03

   Configuration management

   5 lessons
   • Templating and overlays without losing readability
   • Environment promotion by configuration change
   • Managing shared defaults across teams
   • Rendering and validating manifests before merge
   • Promote a release without rebuilding itsequence order
4. 04

   Reconciliation in practice

   5 lessons
   • Reading a reconciliation loop when it will not converge
   • Drift, self-healing and pruning
   • Health assessment and ordered synchronisation
   • Resources the loop must be told not to touch
   • The loop that will not convergescenario
5. 05

   Secrets and sensitive configuration

   5 lessons
   • Keeping secrets out of the repository while keeping GitOps
   • Encrypted-at-rest patterns
   • External secret references
   • Rotation and revocation without breaking reconciliation
   • What each secret decision costs youmatch pairs
6. 06

   Operating at scale

   5 lessons
   • Progressive delivery and rollback with a pull-based model
   • Multi-cluster and multi-tenant repository layouts
   • Change auditing and the evidence trail
   • Incident response when the repository is the control surface
   • Releasing, reverting and proving itfill blank
7. 07

   Practice and check

   5 lessons
   • What the loop is telling youmatch pairs
   • Undoing a bad release in a pull-based systemsequence order
   • Saying it preciselyfill blank
   • A crash loop at the weekendscenario
   • Course quizquiz

The shape of it

How this course works