How I went from single-environment Terraform setups to a production-grade multi-environment infrastructure with Terragrunt and Ansible — built from scratch to actually understand it.
Deep dive into Ansible automation covering playbooks, roles, inventory management, Ansible Vault, idempotency patterns, and a comparison with Terraform.
Nginx 1.24→1.26 across 50 production servers in 90 seconds. SSL handshakes failed. Payments dropped. One innocent Ansible task did all of it. Here's the full breakdown.