Terraform: Self-Hosted Infrastructure as Code Without Cloud Lock-in Training Course

**Infrastructure-as-Code Sovereignty** * Assessment of risks associated with cloud-based consoles and SaaS IaC platforms, including vendor lock-in concerns and gaps in auditability. * Detailed examination of Terraform architecture, encompassing core components, provider ecosystems, state handling, and the plan/apply operational workflow. * Comparative evaluation of Terraform against alternative tools such as Pulumi, Ansible, and CloudFormation for government applications. **Configuration Language and Providers** * Proficiency in HashiCorp Configuration Language (HCL) syntax for defining resources, data sources, variables, and outputs. * Configuration of on-premise providers, including Proxmox, libvirt, vSphere, and PowerDNS. * Exploration of community-supported providers and foundational principles for custom provider development. * Analysis of resource dependencies and the underlying graph theory governing state resolution. **State Management** * Evaluation of security implications regarding local versus remote state storage mechanisms. * Implementation of self-hosted backends utilizing PostgreSQL, S3-compatible object storage (e.g., MinIO), Gitea, and etcd for government infrastructure. * Enforcement of state locking, encryption at rest, and comprehensive backup strategies to ensure data integrity. * Procedures for state migration and detection of configuration drift. **Modules and Workspaces** * Structuring reusable modules with defined inputs and outputs, adhering to versioning best practices for government systems. * Establishment of private module registries using Git tags to control internal distribution. * Maintenance of environmental isolation across development, staging, and production tiers via workspaces. * Utilization of self-hosted alternatives to commercial Terraform Cloud services, such as Atlantis or Spacelift. **Provisioning and Lifecycle** * Integration of cloud-init and PXE for bare-metal infrastructure provisioning. * deployment using provisioners, including local-exec, remote-exec, and file transfer capabilities. * application of null resources and triggers to facilitate custom automation workflows. * Management of resource destruction, planning verification, and tainting procedures to support safe rollback operations. **Security and Compliance** * Enforcement of variable validation rules and proper marking of sensitive data fields. * Implementation of policy-as-code frameworks for on-premise environments using Sentinel or Open Policy Agent (OPA) alternatives. * Establishment of rigorous audit logging protocols and plan file review processes to ensure accountability. **CI/CD Integration** * Automation of plan and apply workflows within GitHub Actions or Woodpecker CI environments. * Integration of `terraform fmt`, `validate`, and linting tools into pre-commit hooks to maintain code quality for government standards. * Configuration of cost estimation models and budget guardrails. * Development of comprehensive rollback strategies and state recovery procedures to ensure operational continuity.