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GitOps Fundamentals

GitOps uses a Git repository as the single source of truth for declarative infrastructure and application configuration. An automated agent continuously reconciles the live system with the desired state defined in version-controlled files, making every change auditable and reversible.

itDevOps and software delivery

Don't Panic - GitOps Fundamentals

GitOps Fundamentals is the subject of this course. GitOps is a way of operating infrastructure and applications where the entire desired state of a system is described declaratively, stored in version control, and kept in sync by software agents that continuously compare what's actually running against what Git says should be running. The name is a compression of the idea: Git becomes the single source of truth for "what should exist," and an automated process - not a person running commands by hand - makes reality match it.

The useful unit of work is a closed loop: clarify the goal and boundaries, gather the inputs the practice requires, make the decision or change, record evidence, and return with owners for the next cycle. Skipping any link leaves teams busy without durable results.

Tooling supports the loop; it does not replace it. Choose tools after the boundary and evidence model are clear. Comparing products without that model produces feature matrices that do not change how the work runs.

Common failure modes include undefined ownership, metrics that count activity instead of outcomes, and irreversible steps taken without a review path. Treat those as design defects in the practice, not as individual heroics to compensate later.

Operators should be able to explain which signals would change a decision this week. If no signal can change the plan, the practice has become ritual. Keep the feedback path short enough that evidence still influences the next cycle.

Name the owners for each stage of the loop before the work scales. Unowned stages become permanent exceptions. Record decisions with enough context that a future operator can tell why a tradeoff was accepted. Prefer fewer, sharper metrics that change behavior over broad dashboards that only describe activity after the fact.

Read the Intro for the core model. Use the Cheatsheet when you need the operating map. Updates tracks official guidance when this course configures an update source; otherwise the practice is settled without a live feed.

Where this skill leads

Relevant careers

See how this topic contributes to broader role-level skill maps.

Sources

  • https://opengitops.dev/
  • https://argo-cd.readthedocs.io/en/stable/
  • https://argo-cd.readthedocs.io/en/stable/core_concepts/
  • https://fluxcd.io/flux/concepts/
  • https://fluxcd.io/flux/