Understand infrastructure automation
Learn how repeatable configuration tasks can be organized instead of performed manually.
DevOps · Infrastructure automation
Ansible
Automate server configuration, application setup, and repeatable infrastructure tasks using inventories, playbooks, modules, variables, templates, handlers, roles, and Ansible Vault.
Move from manually repeating server tasks to describing the desired configuration in a reviewable and reusable automation project.
Course overview
Ansible is an automation tool used to describe and apply repeatable tasks across managed systems. This course introduces the concepts needed to organize server configuration and application deployment work.
You will explore how inventories identify managed hosts, how playbooks describe automation steps, how modules perform actions, and how variables allow one automation project to support multiple systems and environments.
Later modules introduce handlers, templates, roles, Vault, validation, troubleshooting, testing, and project documentation.
The goal is not just to write a playbook that works once. The goal is to create automation that is understandable, repeatable, reviewable, and safer to run again.
Prerequisites
This course is designed for learners with basic computer knowledge who want to explore infrastructure automation and DevOps workflows.
- Basic command-line and terminal familiarity.
- Basic understanding of files and directories.
- Basic networking concepts such as hosts and ports.
- Awareness of Linux or another server operating system.
- Basic YAML reading ability is useful.
- Basic Git knowledge is recommended but not required.
Readiness activity
Create a small local project directory, write a simple YAML file, use Git to record a change, and explain the difference between a local machine and a managed host. This helps prepare you for the inventory and playbook modules.
Who can explore this course?
Reduce repetitive work
Turn common installation, configuration, and service-management tasks into reusable automation.
Support application delivery
Explore how infrastructure tasks connect with application deployment and environment setup.
Prepare for environment automation
Build concepts that can support repeatable workflows across development and staging systems.
What you will learn
- Understand Ansible terminology and workflow.
- Create inventories with hosts, groups, and variables.
- Write playbooks using tasks and modules.
- Use variables to support different environments.
- Apply conditions, loops, and registered results.
- Use handlers for conditional service actions.
- Create configuration files with Jinja2 templates.
- Organize reusable automation with roles.
- Protect sensitive values with Ansible Vault.
- Validate, test, troubleshoot, and document automation.
- Build a server-provisioning portfolio project.
Curriculum outline
The ten-module outline moves from fundamentals to a complete provisioning project. Exercises should be performed in a safe lab environment rather than directly on production systems.
01
Ansible fundamentals
Build a foundation in automation vocabulary, managed nodes, control nodes, modules, tasks, plays, playbooks, and idempotent intent.
- What configuration automation is designed to solve.
- Control node and managed-node responsibilities.
- Ad-hoc commands compared with playbooks.
- YAML structure and readable task naming.
- Basic command execution and result interpretation.
Practice: Run safe discovery tasks against a lab host and record the result in a project README.
02
Environment and tools
Prepare a repeatable local automation workspace and understand the files used in daily workflows.
- Install Ansible in an isolated environment.
- Configure an inventory and ansible.cfg.
- Organize playbooks, variables, and documentation.
- Use terminal output and version checks.
- Track automation changes with Git.
Practice: Create a starter repository with an inventory, configuration file, README, and a first connectivity check.
03
Inventory and managed hosts
Define the systems that automation should manage and group them according to roles or environments.
- Static inventory formats and inventory sources.
- Host groups and nested groups.
- Host variables and group variables.
- Connection details and remote users.
- Inventory inspection and validation.
- Development, staging, and production separation.
Practice: Create web-server and database groups, assign environment variables, and inspect the resulting inventory structure.
04
Playbooks, tasks, and modules
Write readable playbooks that perform system operations through appropriate Ansible modules.
- Plays, hosts, become, tasks, and names.
- Package, file, service, user, and copy modules.
- Task order and predictable execution.
- Module arguments and return information.
- Check mode and controlled changes.
- Why declarative modules are preferred where possible.
Practice: Install a web server, create a document root, deploy a sample file, and ensure the service is enabled and running.
05
Variables, facts, conditions, and loops
Make automation adaptable by separating changing values from reusable task logic.
- Variable definitions and variable precedence.
- Host and group-specific configuration.
- Facts and system information.
- When conditions and task guards.
- Loops over packages, users, and files.
- Registered results and conditional follow-up tasks.
- Variable naming and secure value handling.
Practice: Configure different web-server ports for development and staging while keeping the main playbook reusable.
06
Handlers, templates, and services
Build configuration workflows where service actions occur only when a relevant configuration has changed.
- Handlers and notification behavior.
- Restart and reload decisions.
- Jinja2 expressions and template variables.
- Configuration files generated from templates.
- Default values and validation of required values.
- Separating configuration content from task logic.
Practice: Generate a web-server configuration from a template and notify a handler only when the rendered file changes.
07
Roles and reusable project structure
Organize automation into reusable units with predictable directories for tasks, handlers, defaults, variables, files, and templates.
- Role directory conventions.
- Tasks and handlers entry points.
- Role defaults and role variables.
- Files and templates inside roles.
- Role dependencies and composition.
- Calling roles from a site playbook.
- Keeping roles focused on one responsibility.
Practice: Convert a web-server playbook into a reusable role that can be applied to multiple host groups.
08
Secrets, Vault, and secure automation
Learn how to separate sensitive values from ordinary configuration and avoid exposing them in source code or terminal output.
- Why plaintext secrets are risky.
- Encrypted variables and Vault files.
- Using Vault passwords safely.
- Protecting database and service credentials.
- Limiting sensitive output with no_log where appropriate.
- Reviewing repository content before committing.
- Separating secrets between environments.
Practice: Store a lab credential in an encrypted Vault file and use it in a controlled task without printing the value in output.
09
Quality, testing, and troubleshooting
Improve confidence in automation through validation, safe execution, repeatable checks, and structured diagnosis of failures.
- Syntax checks and inventory inspection.
- Check mode and diff-oriented review.
- Verbose output and task-level diagnosis.
- Common connection and privilege problems.
- Variable resolution and template errors.
- Idempotence checks across repeated runs.
- Role testing concepts and project review.
Practice: Intentionally introduce a variable or connection error, diagnose it, correct it, and document the troubleshooting steps.
10
Real-world implementation and portfolio preparation
Plan a complete provisioning solution and prepare the project so another person can understand, test, and demonstrate it.
- Translate a business requirement into automation tasks.
- Plan inventory groups and environment variables.
- Choose roles and reusable components.
- Define validation and rollback considerations.
- Document assumptions and limitations.
- Prepare a demonstration workflow and README.
- Present a before-and-after infrastructure result.
Practice: Complete the server-provisioning capstone, run it repeatedly in a lab environment, and prepare a short technical walkthrough.
Practical exercise ideas
These focused projects help you practice individual concepts before completing the final provisioning project.
Multi-environment inventory
Create development and staging groups with different host and group variables.
Review focus: grouping, variable organization, inventory inspection, and environment separation.
Web-server setup
Install a web server, create directories, copy a page, and manage the service state.
Review focus: modules, task names, privilege escalation, and repeatable execution.
Dynamic configuration
Render a configuration file with environment values and notify a service handler after changes.
Review focus: Jinja2 variables, handlers, validation, and controlled reloads.
Reusable application role
Package application installation and configuration tasks into a role with defaults and templates.
Review focus: role structure, reuse, naming, and documentation.
Protected configuration
Move lab credentials into an encrypted Vault file and verify that they are not exposed in logs.
Review focus: secret separation, output control, and repository hygiene.
Failure diagnosis lab
Investigate a failed connection, missing variable, invalid template, or unavailable package.
Review focus: evidence collection, correction, and clear incident notes.
Suggested five-week learning plan
This is an illustrative sequence for organizing study and practice. Confirm the institute's actual schedule before publishing it as a timetable.
| Week | Focus | Suggested milestone |
|---|---|---|
| 01 | Fundamentals and tools | Prepare a lab repository and run a connectivity check. |
| 02 | Inventories and playbooks | Automate basic packages, files, users, and services. |
| 03 | Variables and templates | Generate environment-specific configuration files. |
| 04 | Roles, Vault, and quality | Convert tasks into a role and protect lab secrets. |
| 05 | Capstone and presentation | Complete provisioning, validate repeatability, and present the project. |
Bring the course together
Capstone project
Automated web-server provisioning
Build a complete Ansible project that prepares one or more lab servers for a simple web application. The project should demonstrate inventory design, reusable automation, configuration management, service handling, validation, and documentation.
Core project requirements
- Define development and staging inventory groups.
- Configure connection and privilege settings safely.
- Install required operating-system packages.
- Create an application user and required directories.
- Deploy a sample application or static web page.
- Generate configuration files from templates.
- Use handlers for service reload or restart actions.
- Organize repeated tasks into one or more roles.
- Store at least one sensitive lab value with Vault.
- Document how to check, run, and verify the project.
Validation requirements
- Run a syntax check before applying changes.
- Inspect the intended hosts and variables.
- Use check mode where supported before a change.
- Verify the service is enabled and available.
- Run the automation more than once and review changes.
- Confirm configuration changes trigger only required handlers.
- Record known limitations and environment assumptions.
Optional extensions
Extend the project with a reverse proxy, firewall configuration, TLS preparation, database installation, application deployment, scheduled backup, or separate roles for web and database systems. Only add extensions after the core provisioning workflow is stable.
Use an isolated lab environment. Do not apply an unfamiliar playbook to production infrastructure without review, testing, access controls, backups, and an approved change process.
Suggested project structure
A predictable structure helps learners understand where automation content belongs and makes the project easier to review.
ansible-project/
├── ansible.cfg
├── inventory/
│ ├── development.ini
│ └── staging.ini
├── playbooks/
│ ├── site.yml
│ └── webservers.yml
├── group_vars/
│ ├── all.yml
│ └── vault.yml
├── roles/
│ └── webserver/
│ ├── defaults/
│ ├── handlers/
│ ├── tasks/
│ ├── templates/
│ └── vars/
├── README.md
└── .gitignore
The exact structure can vary by project. The important goal is to keep inventories, playbooks, roles, variables, secrets, and documentation easy to locate and review.
Quality and security practices
Reliable automation requires more than successful execution. Review what the playbook changes, which systems it can reach, and how sensitive information is handled.
Prefer idempotent tasks
Design tasks so repeated runs converge on the intended state instead of creating unwanted changes each time.
Use safe execution checks
Inspect inventory, validate syntax, and review intended changes before applying them to a target.
Protect sensitive values
Keep credentials out of ordinary source files and avoid exposing them in terminal output or logs.
Use focused roles
Keep reusable roles organized around clear responsibilities and document their inputs.
Test in a lab
Validate changes against controlled systems before considering broader environments.
Plan failure handling
Record assumptions, backup requirements, rollback options, and known limitations.
Ansible's official guidance includes protecting sensitive values, validating input, and avoiding unsafe handling of command execution. Use these practices as a starting point for secure automation. [18]
Tools and technologies
The course focuses on Ansible automation while using supporting tools for editing, version control, testing, and documentation.
- Ansible
- YAML
- Jinja2 templates
- Ansible Vault
- Git
- GitHub
- Linux terminal
- Visual Studio Code
Supporting concepts
- Linux users, groups, permissions, and services.
- SSH connections and host verification.
- Environment-specific configuration.
- Application deployment and service management.
- Change review and technical documentation.
Learning outcomes
By completing the proposed lessons and exercises, aim to demonstrate the following abilities:
- Explain the relationship between inventories, plays, and tasks.
- Create grouped inventories for a lab environment.
- Write readable playbooks using suitable modules.
- Separate changing values into variables.
- Use conditions and loops for adaptable automation.
- Generate configuration files from templates.
- Trigger service actions with handlers.
- Organize reusable work into roles.
- Protect sensitive values with Vault.
- Validate and troubleshoot common automation failures.
- Explain how repeated execution affects system state.
- Document and present a provisioning project.
These are learning objectives, not guarantees of employment, certification, or placement. Results depend on practice, project quality, prior experience, and role-specific requirements.
Related career interests
The course can support exploration of infrastructure automation and DevOps-related work.
- Junior DevOps Engineer
- Automation Engineer
- Cloud Operations Trainee
- System Administration Trainee
- Associate Engineer
- Support Engineer
- Implementation Engineer
Portfolio presentation ideas
- Explain the infrastructure problem your project solves.
- Show your inventory groups and environment strategy.
- Walk through one playbook from start to finish.
- Demonstrate a template and its rendered result.
- Explain how handlers prevent unnecessary service actions.
- Show how roles improve reuse and organization.
- Describe how you protected sensitive lab values.
- Run the project twice and discuss the output.
- Explain one failure you diagnosed and corrected.
Frequently asked questions
Who is this course for?
It is suitable for beginners to infrastructure automation who have basic computer knowledge and want to explore DevOps and server-configuration tasks.
Do I need Linux experience?
Basic Linux or server knowledge is recommended. The course introduces the related workflow, but learners will benefit from understanding files, users, permissions, services, and the terminal.
What is an Ansible inventory?
An inventory identifies managed hosts and can organize them into groups with related variables. It provides the target context for playbooks. [21]
What is a playbook?
A playbook is a YAML-based automation document that describes plays, target hosts, tasks, variables, handlers, and related configuration.
What are roles?
Roles organize related tasks, handlers, variables, files, and templates into a predictable reusable structure. They help separate responsibilities and share automation content. [20]
What is Ansible Vault used for?
Vault is used to protect sensitive variables or files so credentials and other secrets are not stored as ordinary plaintext in the project.
What is the capstone project?
The proposed capstone is an automated web-server provisioning project with inventory groups, roles, templates, handlers, validation, documentation, and repeatability checks.
How long is the course?
The supplied course information proposes a duration of 5 weeks. Confirm the actual schedule with the academy before publishing or enrolling.
Which tools are included?
The main tools are Ansible, YAML, Jinja2 templates, Ansible Vault, Git, GitHub, a Linux terminal, and a suitable code editor.
Can I use Ansible directly in production?
Do not apply unfamiliar automation directly to production systems. Use a controlled lab, review the changes, protect access, plan backups, and follow an approved change process first.
How do I enroll?
This page is a frontend course-information demonstration. Enrollment, payment, scheduling, and admission workflows are not implemented here.
Does this course guarantee a job?
No. The course can support practical learning and portfolio development, but it does not guarantee employment, certification, placement, or a particular salary.
Start automating with purpose
Build a repeatable infrastructure workflow
Explore inventories, playbooks, roles, templates, Vault, testing, and server provisioning through a structured Ansible learning path.