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LI420: Terraform / OpenTofu ‑ Administration NEW

Training: DevOps

Participants learn Terraform and OpenTofu to plan, create, manage, and automate Infrastructure as Code (IaC) in cloud and on-prem environments – team-safe and reproducible. They understand architecture, providers, and state management, use modules, workspaces, and CI/CD workflows, and compare alternatives such as Pulumi, Ansible, and CloudFormation. Hands-on labs with providers; best practices for modular reusability and OpenTofu as an open-source alternative.

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Possible course languages: German

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Agenda:

Fundamentals & Getting Started with Infrastructure as Code
- What is Terraform?
- OpenTofu (important addition!)
- Infrastructure as Code (IaC)
  - Declarative approach
  - Versioning
  - Reproducibility
  - Automation
  - Idempotency
- Traceability
- CI/CD integration - scalability
- Self-service infrastructure
Terraform Architecture & Core Concepts
- Provider concept
- Interface to APIs
- Responsible for:
  - Authentication
  - Resource management
- State reconciliation
- Areas of use
- Public cloud
- Private cloud
- Hybrid cloud
- On-prem
- Kubernetes
- SaaS resources
- No alternatives?
  - Pulumi
  - AWS™ CloudFormation
  - Azure Resource Manager
  - OpenStack Heat
Terraform & Vagrant
- Difference between provisioning vs. infrastructure
- Vagrant
- Local development environments
Terraform Enterprise & Cloud
- Terraform Enterprise
- Terraform Cloud
- Remote state
- RBAC
- Policy as Code (Sentinel)
- Team workflows
Practical Work with Terraform
- Installation
- Binary download
- Package manager
- Docker
- Kubernetes
- Important CLI commands
  - init
  - plan
  - apply
  - destroy
  - validate
  - fmt
  - show
  - state
  - workspace
Project Structure & Settings
- Create a workspace
- Separation of environments (dev/stage/prod)
- Terraform settings block
Providers in Detail
- Provider functions
- API mapping
- Resource lifecycle
- Data sources
Practical Examples - Cloud Providers
- libvirtd
- OpenStack
- Amazon Web Services (AWS™)
- Google™ Cloud Platform (GCP)
- Microsoft™ Azure
- STACKIT™
- Hetzner
- Kubernetes
- VMware™
- GitHub
- Datadog
Creating Resources
- Compute resource
- Multiple resources (count / for_each)
- Modifying resources
- Network resource
- Floating IP
- Block devices
- Null resources
- Variables & outputs
- Datatypes
  - string
  - number
  - bool
  - list
  - map
  - object
- Declare variables
- tfvars
- Define outputs
- Migration to variables
- Data sources (querying existing resources)
State, Modules, Teamwork & Best Practices
- Terraform state
  - Single source of truth
  - Sensitive data
  - Drift detection
- State backends
- Local
- S3
- Azure Blob
- GCS
Modules
- Module structure
  - main.tf
  - variables.tf
  - outputs.tf
- Module best practices
  - Reusability
  - Versioning
  - Private module registry
  - OpenTofu registry usage
Working in a Team
- Git, SVN & co.
- Pull requests
- Branching strategies
- Code reviews
- Remote state locking
- Wrapper scripts
- Admin workstation concept
- CI/CD pipelines
Alternative Technologies
- Ansible
- Chef
- Puppet
- Pulumi
- AWS™ CloudFormation
- Google™ Cloud Deployment Manager
- OpenStack Heat

Objectives:

The LI420 Terraform / OpenTofu Administration course provides in-depth knowledge of Terraform, OpenTofu, and modern infrastructure workflows.

Target audience:

The LI420 Terraform / OpenTofu Administration course is aimed at:

DevOps Engineers,
cloud and system administrators
IT architects who want to automate their infrastructure efficiently.

The course is particularly suitable for participants who are responsible for cloud resources or on-prem environments and want to implement Infrastructure as Code (IaC) in a hands-on way.

Prerequisites:

To attend the LI420 Terraform / OpenTofu Administration course, you should meet the following prerequisites:

Basic knowledge of cloud technologies and Linux systems.

Description:

In this hands-on 3-day LI420 Terraform / OpenTofu Administration course, you will learn the fundamentals and advanced concepts of Terraform as well as its open-source fork, OpenTofu. The LI420 Terraform / OpenTofu Administration course teaches how to efficiently plan, create, manage, and automate Infrastructure as Code (IaC) – in both cloud and on-prem environments. You will gain a solid understanding of the Terraform architecture, provider structures, state management, and the use of modules, workspaces, and CI/CD workflows. In addition, we compare Terraform with alternative technologies such as Pulumi, Ansible, Chef, Puppet, CloudFormation, and other tools.
Through hands-on exercises, you will create your own resources, work with multiple providers, and learn how to manage infrastructure in a team-safe and reproducible way. A special focus is placed on best practices for modular structures, reusability, and using OpenTofu as a fully open-source alternative to Terraform.