The DevOps Odyssey, Part 3: GitOps on K3s with Argo CD — Self-Managing Infrastructure from a Single Commit
originally posted at LinkedIn at July 31, 2025
In Part 1, we bootstrapped a zero-click deployment pipeline on OCI using Terraform, Ansible, and Docker Compose — complete with HTTPS, DNS, and CI/CD.
Part 2 evolved that foundation into a Kubernetes-native architecture, replacing Docker with K3s. That gave us a declarative control plane and a better foundation for future growth — without sacrificing simplicity or resource constraints.
Now, in Part 3, we finally bring in GitOps: managing the entire cluster from a Git repository using Argo CD. This marks the transition from automation to self-reconciliation — and sets the stage for horizontal scaling and federated identity in the next phase.
