Bring Terraform into pull requests — autoplan, review, approve, and apply via comments — with Atlantis.

Welcome to Atlantis: Terraform Pull Request Automation.

A practical, in-depth guide to Atlantis, the self-hosted application for Terraform pull request automation. Learn how Atlantis turns risky local applies into a collaborative, reviewed, and governed workflow: the Terraform collaboration problem, the server and VCS webhook architecture, the autoplan and apply-via-comment workflow, locking and concurrency, server-side and repo-level configuration, projects and custom workflows, policy checking with OPA/Conftest, security and the trust model, and operating Atlantis in production.

This title is part of the ShriIra library and is free to read in full, right here — our small contribution to making world-class knowledge easy to reach.

A note on reading it: open the Contents menu at the top of the reader to jump between chapters, use the Aa menu to set a comfortable text size, theme (light, sepia, or night), and single- or two-page layout. Your place is saved automatically, so you can always pick up where you left off.

We hope it serves you well.

— Shriira Press

Contents

1. Chapter 1 — What Atlantis Is
2. Chapter 2 — The Terraform Collaboration Problem
3. Chapter 3 — Architecture
4. Chapter 4 — The Pull Request Workflow
5. Chapter 5 — Locking and Concurrency
6. Chapter 6 — Configuration
7. Chapter 7 — Workflows and Projects
8. Chapter 8 — Policy Checking and Security
9. Chapter 9 — Operations and Observability
10. Chapter 10 — Atlantis in Practice