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Kubernetes Cluster Setup with Vagrant and Ansible

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A developer shares their three-week journey building a production-like Kubernetes cluster using Vagrant and Ansible for an e-commerce project. The solution replaces chaotic bash scripts with automated infrastructure, featuring three virtual machines (1 master + 2 workers), GitOps deployment via ArgoCD, centralized logging with Loki/Grafana, and automated scaling. The architecture runs on a Debian host with each VM allocated 4GB RAM and 4 CPUs.

Key improvements include migrating from error-prone shell scripts to idempotent Ansible roles, implementing proper node initialization sequencing, and overcoming common challenges like NFS connectivity issues, insufficient memory allocation, and worker node synchronization. The final deployment enables complete cluster recreation in approximately 10 minutes through a single command. This approach demonstrates practical implementation of infrastructure as code principles for development environments, offering reproducible Kubernetes deployments without relying on simplified solutions like Minikube.

The project emphasizes the importance of proper resource allocation, role-based automation, and systematic troubleshooting in Kubernetes infrastructure provisioning.