Ansible basics: configure servers with playbooks

Configuring several servers by hand makes it easy to miss a step or leave machines different from one another. Ansible runs automation described in text files so you can repeat the same configuration work across selected machines.

An inventory lists the machines to manage. A playbook describes tasks, such as placing a configuration file or setting permissions. Use Ansible when you need repeatable configuration across hosts; start with one lab machine so you can see exactly what a task changes. A task is idempotent when running it again leaves an already-correct result unchanged.

Try it in a lab

Create a lab inventory for a disposable VM. Use a playbook to manage a harmless configuration file and its permissions. Run the playbook twice, then deliberately change the file and run it again.

Check your understanding

Record what changed on each run. Explain which tasks are idempotent and why check mode is useful but does not prove every task will behave safely.

Before you start

Limit the inventory and use explicit target selection. Never begin an exercise against a shared production inventory or place passwords in committed variable files.

Read the official guide

Use the project documentation for version-specific commands and prerequisites. Record the versions and results of your own exercise. This page proposes a learning activity; it does not report a Kubedex test.

This is a newly written study reference at an address from the original Kubedex course outline. The original lesson was not recovered. It does not include course enrolment, progress tracking or a certificate.