I Inherited 47,000 Lines of Terraform Spaghetti — Here's How I Untangled It Without Burning Production
The article discusses the challenges faced by a Senior DevOps Engineer who inherited a complex Terraform codebase with 47,000 lines and no modular structure. It outlines the operational risks associated with a monolithic state file and the inefficiencies that arise from it. The author shares a step-by-step approach to untangling the infrastructure without causing downtime, significantly improving team efficiency.
- ▪The inherited Terraform codebase contained 47,000 lines and a single state file, leading to operational challenges.
- ▪The author implemented a strategy to split the monolithic state file into five separate files based on change frequency and blast radius.
- ▪After restructuring, the time for terraform plan execution decreased from 14 minutes to 45 seconds, tripling team velocity.
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try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 3807945) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } S, Sanjay Posted on May 22 I Inherited 47,000 Lines of Terraform Spaghetti — Here's How I Untangled It Without Burning Production #terraform #iac #devops #cloud The Slack Message That Ruined My Monday "Hey, the previous platform team left. Here's the repo. Good luck 🫡" I stared at the Git repository. 47,000 lines of Terraform. One state file. Zero modules. Variables named x, temp2, and my personal favorite — DO_NOT_TOUCH_ask_raj. Raj had left the company two years ago.
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