Ansible for DevOps

It is built for students and freshers heading towards DevOps, cloud or system administration work, support engineers who repeat the same server tasks by hand, and developers who deploy their own applications. You should be comfortable with the Linux command line, editing files, installing packages and connecting to a server over SSH. The course does not teach Linux basics; Linux Fundamentals & Command Line covers them if you need a refresher. No previous configuration-management experience is needed.

Examples use current ansible-core 2.x with the Ansible community package, YAML playbooks and fully qualified collection names such as ansible.builtin.copy, ansible.builtin.apt and community.general modules. Short module names are pointed out as legacy, so you learn the form current documentation uses. The course stays on the command line; the AWX and Ansible Tower web interfaces are outside it.

Every lesson is a few short reading cards built around a playbook snippet, an inventory file or a piece of command output, with a diagram where one helps and audio narration you can listen to instead of reading. A short multiple-choice quiz follows, with an explanation for every answer. The questions ask what you would see when you run the code: whether a task reports ok, changed or failed, which value wins when the same variable is set in three places, which hosts a pattern matches, or when a handler actually runs. That is the reasoning you need when a playbook misbehaves on a real server. The final section compares look-alike options, such as copy and template, import and include, or a role and a task include, and then works through scenarios such as a rolling web deployment, a Linux baseline and a secrets-aware release.

Broken playbooks often fail in a few familiar ways, and each of these has its own lesson:

• Using command or shell where a state-aware module exists, so every run reports changed
• Passing untrusted variables to the shell module and running into shell expansion
• Expecting a handler to run the moment it is notified rather than at the end of the play
• Misreading variable precedence, such as role defaults losing to inventory variables
• YAML indentation errors that break a playbook before it starts
• Trusting check mode for tasks that cannot predict their own changes
• Keeping passwords in plain text instead of Ansible Vault
• Rolling out to every host at once instead of in serial batches with a failure limit

Udemy and Coursera mostly teach Ansible through video lectures, where an instructor writes playbooks on screen. KodeKloud is known for hands-on labs that run in the browser. This course does a different job: short narrated lessons followed by questions that make you predict what a playbook will do, find the task that breaks idempotence or pick the right module. Video suits watching a full automation project, and labs suit typing commands against a ready-made environment. This format builds the judgement to read and review playbooks quickly. It has no built-in lab, so run the examples on your own virtual machines or containers.

Set up two or three small virtual machines or containers and an inventory that points at them, then run every lesson's example yourself. Run each playbook twice; if the second run reports changes, you have found an idempotence problem worth fixing. Use --check and --diff before any change you are unsure about, and add ansible-lint early so it catches style problems while playbooks are still small. Answer each quiz question before reading its explanation, because recalling the answer yourself is what makes it stick. Once you reach roles, turn one of your playbooks into a role with defaults, templates and handlers; that single exercise ties most of the course together. For a wider view of the toolchain around Ansible, Cloud & DevOps Engineering covers Docker, Kubernetes, CI/CD and observability.