Terraform

Oracle Cloud Free Tier OCI offers free ARM instances with up to 4 OCPUs and 24GB of RAM. Combined with Terraform, we get free and reproducible cloud infrastructure. Terraform Module resource "oci_core_instance" "arm_vm" { availability_domain = data.oci_identity_availability_domain.ad.name compartment_id = var.compartment_id display_name = "arm-instance" shape = "VM.Standard.A1.Flex" shape_config { ocpus = 2 memory_in_gbs = 12 } source_details { source_type = "image" source_id = var.image_id } } Automation The provisioning script configures the node automatically: Installs base dependencies Configures networking Joins the node to the Consul/Nomad cluster Result Cloud infrastructure deployed in minutes, versioned in git, and easily reproducible.

Motivation I always wanted an environment to experiment with the same tools I use professionally. A homelab with HashiCorp Stack lets me iterate fast, break things without fear, and learn in depth. Architecture ┌─────────────────────────────────────────────────┐ │ Traefik (Ingress) │ ├─────────────────────────────────────────────────┤ │ Consul Cluster │ │ (Service Discovery + Mesh) │ ├─────────────────────────────────────────────────┤ │ Nomad Cluster │ │ (Workload Orchestration) │ ├─────────────────────────────────────────────────┤ │ Vault Cluster │ │ (Secrets + PKI) │ ├─────────────────────────────────────────────────┤ │ Prometheus + Grafana + Loki (Observability) │ ├─────────────────────────────────────────────────┤ │ NixOS Nodes (x4) - Bare Metal │ └─────────────────────────────────────────────────┘ Nodes The cluster consists of 4 NixOS nodes, each with its declarative configuration: ...